CN118088262B - A construction drainage device for railway tunnel - Google Patents

Abstract

The present invention discloses a construction drainage device for railway tunnels, which relates to the technical field of tunnel construction, and includes a U-shaped enclosure plate, a water guide mechanism, two filtering and cleaning mechanisms, a collecting mechanism and a water pump, wherein the water guide mechanism and the collecting mechanism are both arranged on the U-shaped enclosure plate; wherein: the water guide mechanism is used to contact the water flow in the tunnel, and includes two symmetrically arranged water absorbing parts and pipe fittings, and the two water absorbing parts are connected to the water suction end of the water pump through the pipe fittings; the water absorbing part includes a water suction pipe, a first electric push rod and an electric control valve, wherein the first electric push rod is used to move the water suction pipe vertically, and the electric control valve is installed in the water suction pipe to control the opening and closing of the water suction pipe. The present invention adopts a cleaning part to effectively clean up the debris on the filter plate, and collects and discharges it through the collecting mechanism, so that the operator does not need to clean up the impurities at the water suction pipe port of the water pump, and does not affect the absorption and discharge of the water flow.

Description

A construction drainage device for railway tunnel

Technical Field

The invention relates to the technical field of tunnel construction, and in particular to a construction drainage device for a railway tunnel.

Background technique

When constructing railways, it is often necessary to build tunnels. Water leakage is inevitable in the constructed railway tunnels. Water leakage to varying degrees may occur in the waterproof layer, detailed structures and other parts, which will affect the progress of railway tunnel construction. When it is necessary to drain the water seepage in the constructed tunnel in time, the construction workers need to push the water pump to the water seepage, then connect the suction pipe to the pipe mouth of the water pump's suction pipe, and install the drainage pipe at the drainage outlet for drainage treatment. Due to the different soil layer structures in the tunnel under construction, corresponding gravel and debris will be generated at the seepage point, such as common mixed soil, sand or gravel, etc., and the pipe mouth of the suction pipe in the existing drainage device is not equipped with any relevant filtering structure, or some are wrapped with a layer of filter net (filter) at the end of the suction pipe, resulting in that when the end of the suction pipe is placed in the seepage puddle, the suction force generated by the water pump will draw the mixed mud or gravel in the puddle into the water pump, which can easily cause damage to the water pump or the wrapped filter net will be blocked when the water pump is sucked for a long time, affecting the drainage equipment to discharge the seepage water in the railway tunnel.

The invention with publication number CN115749940A provides a tunnel construction drainage device, which provides a filtering self-cleaning mechanism at the pipe mouth of a suction pipe. When the water pump is working and the suction force generated acts on the puddle through the suction pipe, the seepage water in the puddle will enter the filter cylinder through the filter screen. At this time, the filter screen will filter the mud or gravel mixed in the seepage water, and the rotation of the cam block will squeeze and vibrate the filter screen made of elastic material, so that the filter screen itself can quickly clean the mud and sand adhered to its outer side in the vibrating state, so that the suction pipe can quickly extract the seepage water generated by the tunnel construction in the puddle, thereby improving the drainage device to quickly extract and discharge the seepage water in the tunnel.

However, the device still has certain shortcomings in use. When the suction pipe is blocked, the water absorption efficiency of the suction pipe will still be affected by the blockage when the designed filter self-cleaning mechanism is used to clean the blockage, which will in turn affect the discharge of water flow. At the same time, for gravel and debris stuck in the filter holes of the filter plate, under the action of water pressure, it is difficult to ensure the cleaning and discharge of the debris only by the vibration of the filter plate.

Summary of the invention

The purpose of the present invention is to provide a construction drainage device for railway tunnels, which solves the problem that the existing construction drainage device for railway tunnels will affect the water discharge efficiency when cleaning debris.

The present invention solves the above technical problems through the following technical solutions. The present invention comprises a U-shaped enclosure plate, a water guide mechanism, two filtering and cleaning mechanisms, a collecting mechanism and a water pump. The water guide mechanism and the collecting mechanism are both arranged on the U-shaped enclosure plate; wherein:

The water-guiding mechanism is used to contact the water flow in the tunnel, and includes two symmetrically arranged water-absorbing parts and pipe fittings, and the two water-absorbing parts are connected to the water-absorbing end of the water pump through the pipe fittings; the water-absorbing part includes a water-absorbing pipe, a first electric push rod and an electric control valve, the first electric push rod is used to move the water-absorbing pipe vertically, and the electric control valve is installed in the water-absorbing pipe to control the opening and closing of the water-absorbing pipe;

The two filtering and cleaning mechanisms are mounted on the water suction ends of the two water suction pipes to filter and clean impurities at the water suction ends;

The collecting mechanism is used to collect the debris discharged by the filtering and cleaning mechanism;

The two first electric push rods are used to circulate and move the two water suction pipes to a high position, so as to realize the circulation of the two water suction pipes to perform water suction operation and clean impurities.

Preferably, a transverse plate is fixed inside the U-shaped enclosure plate, the first electric push rod is fixed to the transverse plate, the output end of the first electric push rod is fixed to the water suction pipe through a connecting plate, and the water suction pipe slides through the transverse plate.

Preferably, the U-shaped enclosure plate is provided with a vertically arranged slide groove, and the connecting plate is fixed with a slider slidably arranged in the slide groove.

Preferably, the filtering and cleaning mechanism comprises a frame, a filtering plate and a cleaning member; wherein:

The frame is arranged at the water suction end of the water suction pipe, the filter plate is fixed at the bottom of the frame, and the filter plate has a plurality of rows of evenly distributed filter holes, and the cleaning piece is arranged inside the frame and is used for cleaning the sundries remaining on the filter plate.

Preferably, the cleaning member comprises a plurality of square tubes, a plurality of rotating shafts, a plurality of eccentric tubes, a plurality of rows of ejector rods, a plurality of rows of rebound structures, a motor and a plurality of gears; wherein:

The multiple square tubes are all fixed on the inner wall of the frame, the multiple square tubes correspond one-to-one to the multiple rows of filter holes, the multiple eccentric tubes are respectively rotatably installed on the inner wall of the frame through multiple rotating shafts, and the multiple eccentric tubes are respectively located in the multiple square tubes, the multiple rows of push rods are respectively installed on the lower side of the multiple square tubes through multiple rebound structures, the rebound structures are used to give the push rods an upward force, the multiple gears are respectively fixed on the ends of the multiple rotating shafts, and the multiple gears are meshed and connected one by one, and the motor is fixed on the outer wall of the frame and is used to drive one of the rotating shafts to rotate.

Preferably, the rebound structure comprises a sleeve, a spring and a gasket; wherein:

The sleeve is fixed to the lower side of the square tube, the push rod is slidably installed through the square tube and the sleeve, the gasket is fixed to the outer side of the push rod in the sleeve, the spring is sleeved on the push rod, and the spring is located between the gasket and the sleeve.

Preferably, the collecting mechanism comprises a collecting plate and two material receiving members; wherein:

The transverse portion of the U-shaped baffle plate is provided with a through opening, the collecting plate is tilted and fixed to the inner side of the U-shaped baffle plate, and its lower end passes through the through opening, two through holes are provided on the collecting plate, and the two suction pipes pass through the two through holes respectively, and when the filtering and cleaning mechanism moves to the upper side of the collecting plate, the material receiving piece is used to fill the through holes to prevent the debris cleaned by the filtering and cleaning mechanism from falling into the through holes.

Preferably, the material receiving member comprises a second electric push rod and a receiving plate; wherein:

The second electric push rod is fixed to the outer wall of the U-shaped enclosing plate, and the receiving plate is slidably penetrated and installed on the U-shaped enclosing plate. The output end of the second electric push rod is connected and fixed to one side of the receiving plate, and a convex strip is fixed to the other side of the receiving plate. The receiving plate is arranged parallel to the collecting plate.

Preferably, the pipe fittings include two first hoses, a second hose and a three-way connector; wherein:

One end of the two first hoses is respectively connected to two water suction pipes, and the other end is connected to a three-way joint. The second hose is used to connect the three-way joint and the water pumping end of the water pump.

Preferably, a plurality of plug-in nails are fixedly provided at the bottom of the U-shaped enclosure plate, and the plurality of plug-in nails are arranged at equal distances.

Compared with the prior art, the beneficial effects of the present invention are:

1. The cleaning parts can effectively clean the debris on the filter plate, and collect and discharge it through the collection mechanism, so that the operator does not need to clean the impurities at the suction pipe port of the water pump, and it does not affect the suction and discharge of the water flow;

2. The present invention provides two water absorbing members, which can be used cyclically to absorb water and process debris, thereby ensuring the continuity of drainage and further ensuring the efficiency of drainage.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of the structure of a U-shaped baffle plate from a first perspective in the present invention;

FIG3 is a schematic diagram of the structure of the U-shaped baffle plate in the present invention from a second viewing angle;

FIG4 is a schematic diagram of the structure of each mechanism in the U-shaped baffle plate of the present invention;

FIG5 is a schematic cross-sectional view of the U-shaped enclosure plate of the present invention;

FIG6 is a schematic diagram of the structure of the filter cleaning mechanism of the present invention from a first viewing angle;

FIG7 is a schematic structural diagram of the filtering and cleaning mechanism of the present invention from a second viewing angle;

FIG8 is a schematic diagram of the internal structure of the protective cover of the present invention;

9 is a schematic diagram of the internal structure of the filter cleaning mechanism of the present invention;

FIG10 is a schematic diagram of the internal structure of the square tube of the present invention;

FIG. 11 is a schematic diagram of the structure enlarged at point A in FIG. 10 .

Explanation of the reference numerals in the accompanying drawings: 1. U-shaped baffle plate; 101. Plug-in nail; 2. Water guiding mechanism; 200. Horizontal plate; 201. Water suction pipe; 202. First electric push rod; 203. Three-way joint; 204. Electric control valve; 3. Filtering and cleaning mechanism; 300. Frame; 301. Filter plate; 302. Square tube; 303. Rotating shaft; 304. Motor; 305. Sleeve; 306. Push rod; 307. Spring; 308. Eccentric tube; 309. Protective cover; 310. Gear; 4. Collecting mechanism; 400. Collecting plate; 401. Second electric push rod; 402. Receiving plate; 403. Through hole; 404. Shielding strip; 5. Water pump.

Detailed ways

The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

Embodiment 1

The present embodiment provides a technical solution: a construction drainage device for a railway tunnel, as shown in Figures 1 to 11, comprising a water pump 5, a U-shaped baffle plate 1, a water guiding mechanism 2, a filtering and cleaning mechanism 3 and a collecting mechanism 4; the water guiding mechanism 2 and the collecting mechanism 4 are both assembled on the U-shaped baffle plate 1, and the water pump 5 is connected to the water guiding mechanism 2 through a pipe fitting, that is, when the water pump 5 is operated, the U-shaped baffle plate 1 is placed in the water flow in the tunnel to extract water, the transverse cross-section of the U-shaped baffle plate 1 is a U-shaped structure, the filtering and cleaning mechanism 3 is used to clean up debris at the water suction end of the water guiding mechanism 2, and the collecting mechanism 4 is used to collect debris discharged by the filtering and cleaning mechanism 3.

A plurality of plug-in nails 101 are fixed to the bottom of the U-shaped enclosure plate 1, and the plug-in nails 101 are arranged at equal intervals. By providing the plug-in nails 101, it is convenient for operators to nail the U-shaped enclosure plate 1 to the water seepage area of the tunnel and ensure stability.

The water-guiding mechanism 2 is used to contact the water flow in the tunnel, and specifically includes: a transverse plate 200, two water suction pipes 201, two first electric push rods 202 and two electric control valves 204; the transverse plate 200 is fixed in the U-shaped baffle plate 1, and the two water suction pipes 201 are slidably inserted in the transverse plate 200, the two first electric push rods 202 are fixed to the transverse plate 200, and the output ends of the two first electric push rods 202 are respectively fixedly connected to the two water suction pipes 201 through connecting plates, and when the first electric push rods 202 are operated, the corresponding water suction pipes 201 will be driven to vertically displace; the two electric control valves 204 are respectively installed at the top ends of the two water suction pipes 201, and the two electric control valves 204 are connected to the first hose, and the two first hoses are connected to the three-way joint 203, and the side end of the three-way joint 203 is connected to the water pumping end of the water pump 5 through the second hose.

Furthermore, in order to ensure the stability of the vertical displacement of the water suction pipe 201, a vertically arranged slide groove is opened on the inner side wall of the U-shaped enclosure plate 1, and a slider slidably arranged in the slide groove is fixed to the connecting plate.

There are two filtering and cleaning mechanisms 3 , and the two filtering and cleaning mechanisms 3 are respectively arranged at the water suction ends of the two water suction pipes 201 for filtering and cleaning debris.

The water guiding mechanism 2 has two operation modes. The first operation mode is: the output ends of the two first electric push rods 202 are retracted at the same time, so that the two water suction pipes 201 are moved downward, the lower ends of the two water suction pipes 201 will contact the water flow at the water seepage, the two electric control valves 204 are opened, and then the water pump 5 is started so that the two water suction pipes 201 absorb the water flow into the water suction pipes 201 and discharge it through the pipe fittings; the second operation mode is: one electric control valve 204 is opened, the other electric control valve 204 is closed, and the water pump 5 is started, one water suction pipe 201 works, and the other water suction pipe 201 does not work. When the opened water suction pipe 201 is blocked or absorbs less water (in the water suction pipe 20 1 can be installed with a flow monitor, and the flow rate in the water suction pipe 201 can be determined by the flow monitor), the electric control valve 204 on the water suction pipe 201 is closed, and the electric control valve 204 on the other water suction pipe 201 is opened, so that the other water suction pipe 201 works to absorb water, and at the same time, the non-working water suction pipe 201 will move upward under the action of the corresponding first electric push rod 202, so that the filtering and cleaning mechanism 3 on the water suction pipe 201 is located above the collecting mechanism 4, thereby achieving continuous drainage and avoiding the situation where the drainage volume of the water pump 5 is reduced. After the non-working water suction pipe 201 moves to the top of the collecting mechanism 4, the corresponding filtering and cleaning mechanism 3 works to clean up the blocked debris.

The filter cleaning mechanism 3 includes a frame 300, a filter plate 301 and a cleaning piece; the frame 300 is arranged at the water suction end of the water suction pipe 201, the filter plate 301 is fixed to the bottom of the frame 300, and the filter plate 301 has a plurality of rows of evenly distributed filter holes, the cleaning piece is arranged inside the frame 300 and located on the upper side of the filter plate 301, the filter plate 301 is used to filter the debris in the water and block it on the outside of the filter plate 301 to prevent the debris from entering the frame 300, and the cleaning piece is used to clean the debris remaining on the filter plate 301;

Furthermore, the cleaning member includes a plurality of square tubes 302 fixed to the inner wall of the frame 300, the plurality of square tubes 302 correspond to the plurality of rows of filter holes one by one, the interior of the plurality of square tubes 302 is provided with a rotating shaft 303 rotatably mounted on the inner wall of the frame 300, an eccentric tube 308 is fixed to the middle of the rotating shaft 303, the side ends of the plurality of rotating shafts 303 are all penetrated to the outside of the frame 300, the side ends of the plurality of rotating shafts 303 are all fixed with gears 310, and the plurality of gears 310 are meshed and connected one by one, and a protective cover 309 covering the plurality of gears 310 is fixed to the side of the frame 300, and by providing the protective cover 309, each gear 310 can be wrapped and shielded to prevent the gear 310 from being immersed in water, thereby ensuring the service life of the gear 310; A motor 304 for driving one of the rotating shafts 303 to rotate is installed on one side of the frame 300. A plurality of sleeves 305 are fixed to the bottom of the square tube 302 relative to the filter hole position of the filter plate 301. A push rod 306 is slidably inserted into the interior of each sleeve 305, and the bottom end of the push rod 306 extends to the bottom of the sleeve 305. The top end of the push rod 306 extends into the square tube 302 and abuts against the eccentric tube 308. In order to ensure the stability of the abutment between the two, an arc-shaped groove is opened at the top of the push rod 306, and the arc-shaped groove cooperates with the outer surface of the eccentric tube 308. A gasket is fixed to the middle of the push rod 306, and a spring 307 is inserted between the gasket and the sleeve 305. The spring 307 gives the push rod 306 an upward movement force.

By running the motor 304 through the transmission cooperation of multiple gears 310, the multiple rotating shafts 303 are all rotated, so that the eccentric tubes 308 on the multiple rotating shafts 303 will also rotate synchronously, and when the eccentric tube 308 rotates, it will push the push rod 306 to move downward (when the push rod 306 moves downward, the gasket on the push rod 306 will squeeze the spring 307, so that the spring 307 has elastic potential energy), and the lower end of the push rod 306 passes through the filter hole on the filter plate 301 to push out the debris in the filter hole. When the eccentric tube 308 rotates away from the push rod 306, the spring 307 will stretch to lift the push rod 306 away from the filter plate 301, and the reciprocating cycle is used to complete the effect of cleaning the debris blocked in the filter plate 301.

The collecting mechanism 4 is mounted on the U-shaped baffle plate 1 and is used to collect the debris discharged by the filtering and cleaning mechanism 3 to prevent it from being adsorbed again;

Specifically, the cleaned debris can fall onto the collecting mechanism 4 for collection. After the filter plate 301 completes debris cleaning, the working motor 304 is turned off, and the corresponding first electric push rod 202 drives the suction pipe 201 into the puddle to be exchanged with another suction pipe 201. Through this structural design, there is no need for operators to clean the debris at the suction pipe port of the water pump 5, and it does not affect the suction and discharge of water flow. When one of the suction pipes 201 sucks and cleans the debris, the other suction pipe 201 sucks water. When cleaning the debris, it can not only be cleaned automatically, but also the gravel, debris, etc. stuck on the filter plate 301 can be flushed out, thereby ensuring the thoroughness of cleaning the blocked debris.

Embodiment 2

This embodiment is further optimized on the basis of the above embodiment, and the same parts as the above technical solutions will not be repeated here. As shown in Figures 2 to 5, in order to better realize the present invention, the following setting method is particularly adopted: In this embodiment, the collection mechanism 4 includes a collection plate 400, two second electric push rods 401 and two receiving plates 402. The collection plate 400 is tiltedly arranged in the U-shaped enclosure plate 1, and the side close to the opening of the U-shaped enclosure plate 1 is at a high position. The outer end of the collection plate 400 extends out of the outer side of the U-shaped enclosure plate 1. A through opening is provided on the side of the U-shaped baffle plate 1 relative to the collecting plate 400; two second electric push rods 401 are symmetrically assembled on both sides of the U-shaped baffle plate 1, and two receiving plates 402 are slidably penetrated and arranged on the two side surfaces of the U-shaped baffle plate 1, and the output end of the second electric push rod 401 is fixedly connected to the side end of the receiving plate 402, and two through holes 403 are provided on the top of the collecting plate 400 for the up and down movement of the filtering and cleaning mechanism 3, and the receiving plate 402 is relatively parallel to the collecting plate 400, thereby facilitating the rolling off of debris on the receiving plate 402.

Specifically, the collecting mechanism 4 is used as follows: when the filtering and cleaning mechanism 3 to be cleaned moves to the top of the collecting plate 400, the corresponding second electric push rod 401 pushes the receiving plate 402 to move, so that the receiving plate 402 is located directly below the filtering and cleaning mechanism 3, thereby the filtering and cleaning mechanism 3 discharges debris, and the discharged debris falls on the receiving plate 402. Before the filtering and cleaning mechanism 3 moves downward, the second electric push rod 401 drives the receiving plate 402 to move away from the filtering and cleaning mechanism 3 to avoid interference with the receiving plate 402 when the filtering and cleaning mechanism 3 moves downward. Through this structural design, the debris discharged by the filtering and cleaning mechanism 3 can be collected to avoid the debris falling into the water again and causing secondary adsorption by the suction pipe 201.

Specifically, the debris on the receiving plate 402 can roll under the action of water flow and its own gravity, thereby falling onto the collecting plate 400, and being discharged outside through the opening on the U-shaped baffle plate 1. A box for collecting debris can be placed at the opening in advance. Through this structural design, the collection of debris on the collecting plate 400 can be completed.

The two receiving plates 402 are both fixed with convex strips at one end close to each other. By providing the convex strips, when the receiving plates 402 move, the convex strips can restrict debris, thereby reducing the debris on the receiving plates 402 from falling into the through holes 403 and returning to the water again.

A shielding strip 404 is fixed to one end of the collecting plate 400 away from the U-shaped enclosure plate 1. By setting the shielding strip 404, the top of the collecting plate 400 can be shielded to prevent debris from splashing out of the collecting plate 400 when the filtering and cleaning mechanism 3 discharges debris.

The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims (8)

1. A be used for construction drainage device for railway tunnel, its characterized in that: the device comprises a U-shaped surrounding baffle, a water guide mechanism, two filtering and cleaning mechanisms, a collecting mechanism and a water pump, wherein the water guide mechanism and the collecting mechanism are arranged on the U-shaped surrounding baffle; wherein:

The water guide mechanism is used for contacting water flow in the tunnel and comprises a pipe fitting and two symmetrically arranged water absorbing pieces, and the two water absorbing pieces are communicated with the water absorbing end of the water pump through the pipe fitting; the two water absorbing parts comprise water absorbing pipes, a first electric push rod and an electric control valve, wherein the first electric push rod is used for moving the water absorbing pipes to vertically displace, and the electric control valve is arranged in the water absorbing pipes to control the opening and closing of the water absorbing pipes;

the two filtering and cleaning mechanisms are respectively assembled at the water absorption ends of the two water absorption pipes and are used for filtering and cleaning impurities at the water absorption ends;

the collecting mechanism is used for collecting sundries discharged by the filtering and cleaning mechanism;

The collecting mechanism comprises a collecting plate and two receiving pieces; wherein:

The transverse part of the U-shaped surrounding baffle is provided with a through hole, the collecting plate is obliquely fixed on the inner side of the U-shaped surrounding baffle, the lower end of the collecting plate passes through the through hole, the collecting plate is provided with two through holes, the two water suction pipes respectively pass through the two through holes, the two material receiving pieces respectively correspond to the two through holes, and when the filtering and cleaning mechanism moves to the upper side of the collecting plate through the corresponding through holes, the corresponding material receiving pieces are used for filling the corresponding through holes so as to prevent sundries cleaned by the filtering and cleaning mechanism from falling into the through holes;

the two receiving pieces comprise a second electric push rod and a receiving plate; wherein:

The second electric push rod is fixed on the outer side wall of the U-shaped surrounding baffle, the bearing plate is installed on the U-shaped surrounding baffle in a sliding penetrating mode, the bearing plate is located above the collecting plate, the output end of the second electric push rod is fixedly connected with one side of the bearing plate, a raised line is fixed on the other side of the bearing plate, and when the bearing plate moves, the raised line limits sundries on the bearing plate, so that sundries on the bearing plate are prevented from falling into the through hole and returning to water again;

The bearing plate is arranged in parallel with the collecting plate;

During operation, one water suction pipe works, the other water suction pipe does not work, when the water suction pipe in the work is blocked and needs to be cleaned, the electric control valve on the water suction pipe which needs to be cleaned is closed, the other water suction pipe is opened to work, meanwhile, the first electric push rod moves the water suction pipe which needs to be cleaned to a high position, the filtering and cleaning mechanism on the water suction pipe which needs to be cleaned is located above the collecting mechanism, the corresponding second electric push rod pushes the connected carrying plate to move, the carrying plate is located under the filtering and cleaning mechanism on the water suction pipe which needs to be cleaned, the filtering and cleaning mechanism works to clean blocked sundries, the cleaned sundries fall on the corresponding carrying plate, the sundries on the carrying plate roll and fall on the collecting plate, the impurities are discharged through the through opening on the U-shaped surrounding baffle, and before the filtering and cleaning mechanism moves downwards, the corresponding second electric push rod drives the connected carrying plate to move away from the filtering and cleaning mechanism which needs to move downwards, the filtering and cleaning mechanism is prevented from moving downwards, and the two first electric push rods are circularly adopted to move to two water suction pipes to two high positions to be in order to clean the water circulation.

2. The construction drainage device for railway tunnel according to claim 1, wherein the U-shaped surrounding baffle is internally fixed with a cross plate, the first electric push rod is fixed on the cross plate, the output end of the first electric push rod is fixed with a water suction pipe through a connecting plate, and the water suction pipe penetrates through the cross plate in a sliding manner.

3. The construction drainage device for railway tunnels according to claim 2, wherein the U-shaped surrounding baffle is provided with a vertically arranged chute, and the connecting plate is fixedly provided with a sliding block which is arranged in the chute in a sliding manner.

4. The construction drainage device for a railway tunnel according to claim 1, wherein the filtering and cleaning mechanism comprises a frame, a filter plate and a cleaning member; wherein:

The filter plate is fixed at the bottom of the frame body, the filter plate is provided with a plurality of rows of evenly distributed filter holes, and the cleaning piece is arranged inside the frame body and is used for cleaning sundries reserved on the filter plate.

5. The construction drainage device for railway tunnel according to claim 4, wherein the cleaning member comprises a plurality of square tubes, a plurality of rotating shafts, a plurality of eccentric tubes, a plurality of rows of ejector pins, a plurality of rows of rebound structures, a motor, and a plurality of gears; wherein:

The square tubes are fixed on the inner wall of the frame body, the square tubes are in one-to-one correspondence with the filtering holes in the plurality of rows on the filtering plate, the eccentric tubes are respectively installed on the inner wall of the frame body through a plurality of rotating shafts in a rotating mode, the eccentric tubes are respectively located in the square tubes, the ejector rods are respectively installed on the lower sides of the square tubes through a plurality of rows of rebound structures, the rebound structures are used for giving upward acting force to the ejector rods, the gears are respectively fixed on the end portions of the rotating shafts, the gears are in one-to-one meshed connection, and the motor is fixed on the outer wall of the frame body and used for driving one rotating shaft to rotate.

6. The construction drainage device for railway tunnel of claim 5, wherein the rebound structure comprises a sleeve, a spring and a grommet; wherein:

The sleeve is fixed in the downside of side pipe, the ejector pin slip runs through and installs in side pipe and sleeve, the backing ring is fixed in the ejector pin outside in the sleeve, the ejector pin is located to the spring housing, just the spring is located between backing ring and the sleeve.

7. The construction drainage device for railway tunnel according to claim 1, wherein the pipe member comprises a second hose, a three-way joint, and two first hoses; wherein:

One end of each first hose is respectively communicated with each two water suction pipes, the other ends of the two first hoses are connected with the tee joint, and the second hose is used for connecting the tee joint with the water pumping end of the water pump.

8. The construction drainage device for railway tunnels according to claim 1, wherein a plurality of plug nails are fixedly arranged at the bottom of the U-shaped surrounding baffle plate, and the plug nails are equidistantly arranged.