CN216305795U - Folding type underground passage entrance water-blocking baffle - Google Patents

Abstract

The utility model discloses a folding type water blocking baffle for an underground passage inlet, relates to drainage engineering and underground space engineering, and particularly relates to a device for preventing rainwater from entering the underground passage inlet. Mainly comprises a gate slot, a gate plate, an upright post and an inclined strut. The flashboard is foldable, the upright post and the flashboard are connected into a whole, the upright post is a hinged shaft for folding the flashboard and is a part for fixing the flashboard and the ground, an inclined strut is used for supporting the part to form a stable water-blocking baffle, the flashboard is connected into a whole after being folded, all fastening parts are provided with a wrench, parts and a main body are of inseparable structures, and the flashboard and a sluice trough are provided with sealing water stops. The flashboard has light dead weight, high strength, simple installation, firmness and stability, convenient operation with a wrench, inseparable accessories and the main body, no accessory loss and no gap water seepage due to sealing and water stopping.

Description

Folding type underground passage entrance water-blocking baffle

Technical Field

The utility model relates to a folding type water blocking baffle for an underground passage inlet, relates to drainage engineering and underground space engineering, and particularly relates to a device for preventing rainwater from entering the underground passage inlet.

Background

The urban drainage system collects water through the ground, converges into a rainwater inlet and discharges into a rainwater pipeline to be discharged to a water body or a pump station, when the drainage pipeline is designed, the rainstorm intensity is calculated according to a certain design reproduction period, then the rainwater flow discharged into the pipeline is calculated according to the catchment area, the pipe diameter is determined according to the flow, the rainwater drainage system can meet the drainage requirement in normal rainfall, when rainstorm exceeding the design reproduction period occurs, surface water accumulation can be caused, and urban waterlogging can occur in the case of extra-large rainstorm. In the city, the entrance of underground spaces such as street crossing channel, underground market, subway of underpass road in order to prevent that ground rainwater from pouring into underground space, generally all can exceed several steps on ground during the entry design, generally exceeds ground 30~100cm, but when meetting heavy rainstorm, also probably ponding overflows the step and flows into underground space.

In order to prevent rainwater from pouring into an underground space through a channel inlet, channel steel is generally installed on the side walls of the two sides of the channel inlet to serve as gate slots in the prior art, a wood board is embedded in the gate slots to serve as a water blocking baffle, sand bags are stacked on the rear side of the baffle, the strength of the baffle is improved, and water inflow from gaps is reduced. But this method also has some defects, general passageway entry width 4~6m, and wooden baffle needs the concatenation and reinforces with the angle steel, and the baffle thickness is general 5~8cm, and the baffle weight of preparation is great, and the installation is very inconvenient, and the baffle is accomodate at ordinary times and is stored also inconveniently, and some are exactly leaning on the side wall limit of entry. In addition, the baffle plate, the gate slot and the ground have gaps, so that a small amount of rainwater flows into the gate slot and is drained manually even if the sand bag is adopted for blocking.

In order to overcome the defects, the water blocking baffle is divided into two sections, an upright post is additionally arranged between two side wall gate slots, the gate slots are arranged on two sides of the upright post in the direction corresponding to the side wall gate slots, one end of the baffle is embedded into the gate slots of the side walls, the other end of the baffle is embedded into the gate slots of the upright post, the gate slots are provided with rubber sealing strips, the baffle is pressed by screws for sealing, and the bottom of the baffle is also provided with the rubber sealing strips for water blocking. The baffle falls into two sections and can alleviate the weight of baffle, sets up the infiltration of effective less water of sealing strip, and the stand can be demolishd, and the underground of passageway sets up one and buries the ground flange, and the chassis of stand has the hole that corresponds with it, adopts the screw to fix the stand on burying the ground flange, demolishs the stand at ordinary times after, the screw adoption is interior hexagonal countersunk head screw, twists and sink to underground on burying the ground flange and do not influence pedestrian's current. The water blocking baffle has the defects that the upright post needs to be installed after an inner hexagonal screw is detached, an inner hexagonal wrench is needed for installation, a spanner is needed for fastening the screw of the baffle, tools such as a wrench are placed in a management room at ordinary times, and the possibility that the screw on the gate slot is unscrewed and lost by people even if the screw is not returned by borrowing is inevitable. When a flood danger occurs, the problems that tools cannot be found, screws are lost, time is consumed for mounting the stand column and the like exist, the two baffle plates are split, if the baffle plates with a plurality of inlets are stored together, the baffle plates are possibly mixed, and the two baffle plates are not combined to form a complete set when in use.

Disclosure of Invention

The purpose of the utility model is: the folding water-blocking baffle for the underground passage entrance is mainly composed of a gate slot, a gate plate, an upright post and an inclined strut. The flashboard is foldable, the upright post and the flashboard are connected into a whole, the upright post is a hinged shaft for folding the flashboard and is a part for fixing the flashboard and the ground, an inclined strut is used for supporting the part to form a stable water-blocking baffle, the flashboard is connected into a whole after being folded, all fastening parts are provided with a wrench, parts and a main body are of inseparable structures, and the flashboard and a sluice trough are provided with sealing water stops. The flashboard, the sluice tank and the fittings are made of aluminum alloy and stainless steel.

The utility model is realized by the following technologies: a folding type water blocking baffle for an underground passage inlet mainly comprises a gate slot 1, gate plates 2, an upright post 3 and inclined struts 4, wherein the gate slot 1 is arranged on the left side and the right side of the passage inlet, the gate plates 2 are arranged on the left side and the right side, a left hinge 5 and a right hinge 6 are arranged at the joint of the two gate plates 2, the left hinge 5 and the right hinge 6 are mutually occluded, the upright post 3 penetrates through hinge holes of the left hinge 5 and the right hinge 6 to be used as hinge shafts, the two gate plates 2 can rotate around the upright post 3 to form the folding type water blocking baffle, two ends of the gate plates 2 are embedded into the gate slot 1 in an unfolding state, the lower end of the upright post 3 is provided with a thread, an upright post ground nut 7 is arranged on the ground corresponding to the passage inlet of the upright post 3, the upright post ground nut 7 is embedded below the ground, the thread of the upright post 3 is screwed into the upright post ground nut 7, the top of the upper end 2 of the gate plates 3 is provided with the inclined strut connector 8, and the vertical hole of the inclined strut connector 8 is sleeved on the upright post 3, the back bracing connector 8 that the stand 3 was screwed is pressed on the upper portion of flashboard 2, and bracing 4 is installed to the horizontal hole of the other end of bracing connector 8, and bracing 4 adopts bracing fixing bolt 10 to fix on bracing ground nut 11 through articulated base 9, and bracing ground nut 11 buries at the below ground, and flashboard 2 constitutes a firm baffle that blocks water under the support of sluice gate 1, stand 3, bracing 4.

The flashboard 2 inlay and adopt locking mechanism fixed in sluice gate 1, locking mechanism is including setting up flashboard locking bolt 12 on sluice gate 1 and setting up the flashboard keyhole 13 at flashboard 2 tip, the front end of flashboard locking bolt 12 is provided with rotatory slider 14, flashboard locking bolt 12 front end has a round of recess, install at rotatory slider 14 spacing pin 15 and inlay in the recess, make rotatory slider 14 can not separate with flashboard locking bolt 12, rotatory slider 14 does not rotate along with it during rotatory flashboard locking bolt 12, receive rotatory slider 14's restriction can not separate with sluice gate 1 when loosening flashboard locking bolt 12, the rear end of flashboard locking bolt 12 is provided with flashboard locking spanner 16, when installing flashboard 2, the flashboard locking bolt 12 of screwing imbeds in the flashboard keyhole 13 with rotatory slider 14, flashboard 2 is fastened in sluice gate 1.

The screw thread of stand 3 lower extreme be trapezoidal screw thread, and stand ground nut 7 that matches with it is trapezoidal nut, the upper end of stand 3 is provided with stand spanner 17, bracing fixing bolt 10 be trapezoidal screw, the bracing ground nut 11 that matches with it is trapezoidal nut, the upper end of bracing fixing bolt 10 is provided with bracing fixing bolt spanner 18.

The gate slot 1 is arranged on the side wall of the channel inlet by adopting a gate slot fixing bolt 19, and the inner side of the gate slot 1 is provided with a gate slot water stop 20.

The gate plate 2 is a frame consisting of a left hinge 5 or a right hinge 6, an end vertical support 21, an upper support 22, a lower cross support 23 and a middle support 24, panels 25 are arranged on two sides of the frame, a gate plate water stop rubber ring 26 is arranged at the bottom of the lower cross support 23, a middle seam water stop belt 27 is arranged at the hinged position of the two gate plates 2, and the lower end of the middle seam water stop belt 27 is connected with the gate plate water stop rubber ring 26.

The utility model relates to a spare underground passage water blocking device which is used for preventing rainwater from being poured into an underground space during rainstorm. The beneficial effects are that: the flashboard has light dead weight, high strength, simple installation, firmness and stability, convenient operation with a wrench, inseparable accessories and the main body, no accessory loss and no gap water seepage due to sealing and water stopping.

Drawings

FIG. 1 is a front elevation view of the inlet of the passageway of the present invention;

FIG. 2 is a side elevational view of the inlet of the passageway of the present invention;

FIG. 3 is a plan view of the water blocking baffle installation;

FIG. 4 is a side sectional view (section A-A of FIG. 3) of the water blocking baffle installation;

FIG. 5 is a perspective view of the gate slot;

FIG. 6 is a front elevational view of the shutter plate;

FIG. 7 is a side sectional view of the shutter plate (section B-B in FIG. 6);

fig. 8 is a perspective view of the shutter in a folded state.

In the figure: 1-gate groove, 2-gate plate, 3-upright post, 4-diagonal brace, 5-left hinge, 6-right hinge, 7-upright post ground nut, 8-diagonal brace connector, 9-hinged base, 10-diagonal brace fixing bolt, 11-diagonal brace ground nut, 12-gate plate locking bolt, 13-gate plate keyhole, 14-rotary slider, 15-limit pin, 16-gate plate locking wrench, 17-upright post wrench, 18-diagonal brace fixing bolt wrench, 19-gate groove fixing bolt, 20-gate groove waterstop, 21-end vertical brace, 22-upper horizontal brace, 23-lower horizontal brace, 24-middle vertical brace, 25-panel, 26-waterstop gate rubber ring and 27-middle seam waterstop.

Detailed Description

In order that those skilled in the art can better understand the present invention, the present invention will be further described with reference to fig. 1 to 8, and the description of the embodiments is not intended to limit the present invention.

The utility model relates to a folding type water-blocking baffle for an underground passage entrance, which mainly comprises a gate slot 1, a gate plate 2, an upright post 3 and an inclined strut 4, wherein the gate slot 1 is arranged at the left side and the right side of the passage entrance, see a vertical drawing of the passage entrance in figure 1 and a side vertical drawing of the passage entrance in figure 2, and figure 2 shows that the ground water level exceeds the step of the passage entrance, and the water-blocking baffle plays a role in preventing accumulated water from flowing into the passage. The gate plates 2 are arranged on the left and the right, a left hinge 5 and a right hinge 6 are arranged at the joint of the two gate plates 2, the left hinge 5 and the right hinge 6 are mutually occluded, the upright post 3 penetrates through a hinge hole of the left hinge 5 and the right hinge 6 to be used as a hinge shaft, the two gate plates 2 can rotate around the upright post 3 to form a folding water-blocking baffle, two ends of the gate plates 2 are embedded into the gate slots 1 in the unfolding state, the installation plan view of the water-blocking baffle is shown in figure 3, the lower end of the upright post 3 is provided with a thread, an upright post ground nut 7 is arranged on the ground corresponding to a passage inlet of the upright post 3, the upright post ground nut 7 is embedded below the ground, the thread of the upright post 3 is screwed into the upright post ground nut 7 in a rotating mode, the top of the gate plate 2 at the upper end of the upright post 3 is provided with a diagonal brace connector 8, the vertical hole of the diagonal brace connector 8 is sleeved on the upright post 3, the upper part of the gate plate 2 after the upright post 3 is screwed, a diagonal brace 4 is installed in a horizontal hole at the other end of the diagonal brace connector 8, the inclined strut 4 is fixed on an inclined strut ground nut 11 through a hinged base 9 by adopting an inclined strut fixing bolt 10, the inclined strut ground nut 11 is buried below the ground, and the gate plate 2 forms a stable water blocking baffle plate under the support of the gate slot 1, the upright post 3 and the inclined strut 4, as shown in a mounting side sectional view of the water blocking baffle plate in fig. 4, fig. 4 is a section A-A in fig. 3.

The flashboard 2 is embedded in the flashboard groove 1 and fixed by a locking mechanism, the locking mechanism comprises a flashboard locking bolt 12 arranged on the flashboard groove 1 and a flashboard keyhole 13 arranged at the end part of the flashboard 2, a rotary slide block 14 is arranged at the front end of the flashboard locking bolt 12, a circle of groove is arranged at the front end of the flashboard locking bolt 12, a limit pin 15 arranged on the rotary slide block 14 is embedded in the groove, the rotary slide block 14 cannot be separated from the flashboard locking bolt 12, the rotary slide block 14 does not rotate along with the rotary slide block when the flashboard locking bolt 12 rotates, and the slide block 14 compresses the flashboard 2 and does not generate rotary friction. When the gate locking bolt 12 is unscrewed, the gate locking bolt is limited by the rotary slide block 14 and cannot be separated from the gate slot 1, so that the loss of the gate locking bolt 12 is avoided. The rear end of the flashboard locking bolt 12 is provided with a flashboard locking wrench 16, so that a handle is not required to be additionally arranged, and the embarrassing situation that the handle cannot be found in an emergency state is avoided. When the shutter 2 is installed, the shutter lock bolt 12 is tightened to fit the rotary slider 14 into the shutter keyhole 13, and the shutter 2 is fastened to the gate groove 1. All parts of sluice gate 1 and above adopt stainless steel processing preparation, and the both sides of sluice gate 1 are equipped with the fixed tenon, and sluice gate 1 adopts sluice gate fixing bolt 19 to install on the side wall of passageway entry, and fixing bolt 19 adopts M8~ 10X 50~100 mm's expansion bolts, and every side fixing bolt 19 sets up twice, paints sealed glue in gap department after sluice gate 1 installs, avoids seeping water between sluice gate 1 and the side wall. The inboard gate slot waterstop 20 that is provided with of gate slot 1, groove waterstop 20 adopt the rubber preparation, and flashboard 2 is sealed down by the extrusion of flashboard locking bolt 12, avoids permeating water between gate slot 1 and the flashboard 2, sees the big appearance of gate slot of figure 5.

The gate plate 2 is a frame composed of a left hinge 5 or a right hinge 6, an end vertical support 21, an upper support 22, a lower support 23 and a middle support 24, and panels 25 are arranged on two sides of the frame. The height of the gate plate 2 is determined according to the height of water blocking required, generally 60-100 cm is preferable, and the width of the length installation channel is determined. The end vertical support 21, the upper horizontal support 22, the lower horizontal support 23 and the middle vertical support 24 are aluminum alloy sections, the left hinge 5 and the right hinge 6 are parts for connecting the two gate plates 2 and are formed by combining the aluminum alloy sections and a hinge body, the hinge body is in a circular shape with holes and is embedded in one corner of the aluminum alloy sections and welded, and the figure 3 shows that the aluminum alloy sections are welded. According to the center in the hole of theory articulated body should be on the edge of the inboard that flashboard 2 is folding, folding back flashboard is together, but has panel 25 fixed screw and waterstop on the flashboard 2, and the hinge hole of left hinge 5 or right hinge 6 will outwards move 3~5mm, has 6~10 mm's clearance after two flashboards are folded, can not appear the flashboard 2 like this and close not tight phenomenon. The number of the hinge bodies of the left hinge 5 is odd, and the number of the right hinge 6 is even, and the two hinges can be interchanged. The mutual connection positions of the left hinge 5 or the right hinge 6, the end vertical support 21, the upper horizontal support 22 and the lower horizontal support 23 are butted by adopting a 45-degree cutting angle, which is shown in a right-side elevation view of the gate plate of FIG. 6. An aluminum alloy right-angle fixing piece penetrates through the section bar at the diagonal joint of the aluminum alloy section bar, so that the two connected section bars are in a right angle of 90 degrees, the section bars are not connected at a 45-degree joint, a butt joint seam with the length of 2-3 mm is reserved, the butt joint section bar and the right-angle fixing piece are welded into a whole by argon arc welding, the weld joint is ground flat, and the outer frame manufacturing is completed. And a middle vertical support 24 is welded between the upper cross support 22 and the lower cross support 23, the number of the middle vertical supports 24 is determined according to the length of the gate plate 2, the vertical support interval is preferably 40-60 cm, and the dotted line in the middle of the figure 6 is shown. The inner edge of the frame is provided with a concave platform, the depth of the concave platform is the same as the thickness of the panel 25, sealant is coated on the concave platform, the panel 25 is embedded in the concave platform, stainless steel screws are adopted to fix the panel 25 on the frame along the edge of the panel 25 and the position of the middle support 24, the bottom of the lower cross support 23 is provided with a flashboard water stop rubber ring 26, the flashboard water stop rubber ring is shown in a side sectional view of a flashboard in figure 7, and figure 7 is a section B-B in figure 6. The hinged part of the two gate plates 2 is provided with a middle seam water stop belt 27, and the middle seam water stop belt 27 is fixed at the hinged part of the two gate plates 2 by stainless steel screws, as shown in figure 3. The lower end of the middle seam water stop belt 27 is connected with the flashboard water stop rubber ring 26, and the flashboard water stop rubber ring 26 and the middle seam water stop belt 27 are made of rubber materials.

The stand 3 adopts stainless steel material car system, and the diameter of stand 3 adopts clearance fit with the hinge hole of left hinge 5 and right hinge 6, and left hinge 5 and right hinge 6 can rotate on stand 3 in a flexible way and not become flexible. The screw thread of 3 lower extremes of stand is trapezoidal thread, and trapezoidal thread pitch is big, and rotatory round displacement is big, and rotatory stand 3 can be screwed fast during installation flashboard 2, and trapezoidal thread still has the high characteristics of fastening strength. The upper end of stand 3 is provided with stand spanner 17 for rotatory stand 3, stand spanner 17 adopts the stainless steel preparation, and stand ground nut 7 supporting with stand 3 is trapezoidal nut. The bracing 4 adopts the preparation of nonrust steel pipe, and 4 upper ends of bracing support on stand 3 through bracing connector 8, and 4 lower extremes of bracing adopt bracing fixing bolt 10 to fix on bracing ground nut 11 through articulated base 9, and bracing fixing bolt 10 is trapezoidal screw, and the bracing ground nut 11 that matches with it is trapezoidal nut, and the upper end of bracing fixing bolt 10 is provided with bracing fixing bolt spanner 18, and bracing fixing bolt spanner 18 adopts the stainless steel preparation.

After the preparation of flashboard 2 is accomplished, assemble two flashboards 2, inlay the hinge body at left hinge 5 with the hinge body of right hinge 6, stand 3 is emboliaed to bracing connector 8, stand 3 penetrates in the hinge hole of left hinge 5 and right hinge 6, the gasket is sheathed in after penetrating in to stand 3, there is a aperture in the position that is close to the gasket on stand 3, downthehole stopping pin that inserts, the bending of stopping pin both ends can't be extracted, because the restriction stand 3 of stopping pin and gasket can't be taken out, reach the mesh that stand 3 and flashboard 2 do not separate.

Both ends of the inclined strut 4 are provided with hinged holes, one end of the inclined strut 4 is hinged with the inclined strut connector 8 through a hinged shaft, so that the inclined strut 4 can rotate up and down, the hinged hole at the other end of the inclined strut 4 is hinged with the hinged base 9, and the hinged base 9 can be in smooth contact with the ground. After the inclined strut fixing bolt 10 penetrates into the hinged base 9, a gasket and a backstop pin are additionally arranged in the same mode as the upright column 3 for limiting, so that the inclined strut fixing bolt 10 is not separated from the hinged base 9. Through the assembly, the flashboard 2, the upright post 3, the inclined strut 4, the inclined strut connector 8, the hinged base 9 and the inclined strut fixing bolt 10 form the non-separable and foldable flashboard 2. Two mutually perpendicular's of bracing connector 8 hole are articulated to form a universal joint, make bracing 4 can adjust to be convenient for accomodate wantonly. After folding, the two gate plates 2 and the inclined strut 4 are fixed by a buckle, as shown in a three-dimensional view of the gate plate folding state of fig. 8.

The connection between the flashboard locking wrench 16 and the flashboard locking bolt 12, the connection between the upright post wrench 17 and the upright post 3, and the connection between the inclined strut fixing bolt wrench 18 and the inclined strut fixing bolt 10 can be turned over by 180 degrees, and when the wrench is rotated to a certain position, the wrench can be turned over by 180 degrees and changed to the other side.

The position between two brake slots 1 sets up stand ground nut 7, and according to the height of flashboard 2 again, the position of bracing ground nut 11 is confirmed to the length of bracing 4, and stand ground nut 7 and bracing ground nut 11 are installed in the box of area lid, and the box is buried underground, covers lid and ground parallel and level, does not influence the pedestrian and passes, and it can to turn over the lid when installing the baffle that blocks water.

When installing flashboard 2, expand flashboard 2, both ends embedding sluice gate 1 is interior, flashboard 2 is pushed down, flashboard stagnant water rubber ring 26 is compressed, when rotatory slider 14 aligns the flashboard keyhole 13, a flashboard lock bolt 12 above screwing earlier, make rotatory slider 14 block in flashboard keyhole 13, this one step back is done all done to both sides, the bottom screw thread of stand 3 aligns stand ground nut 7, screw stand 3, screw bracing fixing bolt 10 at bracing ground nut 11, screw another flashboard lock bolt 12 on sluice gate 1 again, the baffle installation that blocks water that a firm finishes, see fig. 4.

The description and drawings of the present application are to be regarded as illustrative in nature, and not restrictive, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit and scope of the utility model.

Claims (5)

1. The utility model provides a foldable underpass entry baffle that blocks water, characterized by: mainly comprises a gate groove (1), gate plates (2), upright posts (3) and inclined struts (4), wherein the gate groove (1) is arranged on the left side and the right side of a channel inlet, the gate plates (2) are arranged on the left side and the right side, a left hinge (5) and a right hinge (6) are arranged at the joint of the two gate plates (2), the left hinge (5) and the right hinge (6) are mutually occluded, the upright posts (3) penetrate through hinge holes of the left hinge (5) and the right hinge (6) to serve as hinge shafts, the two gate plates (2) can rotate around the upright posts (3) to form a folding water-blocking baffle, the two ends of the gate plates (2) in an unfolded state are embedded into the gate groove (1), the lower ends of the upright posts (3) are provided with threads, upright post ground nuts (7) are arranged on the ground corresponding to the channel inlet of the upright posts (3), the upright post ground nuts (7) are buried below the ground, the threads of the upright posts (3) are screwed into the upright post ground nuts (7), and inclined strut connectors (8) are arranged on the tops of the upper ends (2) of the upright posts (3), the vertical hole cover of bracing connector (8) is on stand (3), stand (3) are screwed back bracing connector (8) and are pressed on the upper portion of flashboard (2), horizontal hole installation bracing (4) of the other end of bracing connector (8), bracing (4) adopt bracing fixing bolt (10) to fix on bracing ground nut (11) through articulated base (9), bracing ground nut (11) bury below ground, flashboard (2) are at brake groove (1), stand (3), under the support of bracing (4), constitute a firm baffle that blocks water.

2. The folding underpass entrance water-blocking baffle as recited in claim 1, wherein: the gate plate (2) is embedded in the gate groove (1) and fixed by adopting a locking mechanism, the locking mechanism comprises a gate plate locking bolt (12) arranged on the gate groove (1) and a gate plate keyhole (13) arranged at the end part of the gate plate (2), the front end of the gate plate locking bolt (12) is provided with a rotary slider (14), the front end of the gate plate locking bolt (12) is provided with a circle of groove, a limit pin (15) arranged on the rotary slider (14) is embedded in the groove, so that the rotary slider (14) cannot be separated from the gate plate locking bolt (12), the rotary slider (14) cannot rotate along with the gate plate locking bolt (12) when the gate plate locking bolt (12) is rotated, the gate plate locking bolt (12) is limited by the rotary slider (14) when being unscrewed and cannot be separated from the gate plate groove (1), the rear end of the locking bolt (12) is provided with a gate plate locking spanner (16), when the gate plate (2) is installed, the rotary slider (14) is embedded into the keyhole (13) by the rotary slider (12), the gate plate (2) is fastened in the gate slot (1).

3. The folding underpass entrance water-blocking baffle as recited in claim 1, wherein: the screw thread of stand (3) lower extreme be trapezoidal screw thread, stand ground nut (7) supporting with it is trapezoidal nut, the upper end of stand (3) is provided with stand spanner (17), bracing fixing bolt (10) be trapezoidal screw, bracing ground nut (11) supporting with it is trapezoidal nut, the upper end of bracing fixing bolt (10) is provided with bracing fixing bolt spanner (18).

4. The folding underpass entrance water-blocking baffle as recited in claim 1, wherein: the sluice trough (1) is installed on the side wall of the inlet of the passage by adopting a sluice trough fixing bolt (19), and a sluice trough water stop belt (20) is arranged on the inner side of the sluice trough (1).

5. The folding underpass entrance water-blocking baffle as recited in claim 1, wherein: flashboard (2) by left hinge (5) or right hinge (6), end stand prop (21), go up stull (22), stull (23) down, well stull (24) constitute the frame, both sides installation panel (25) of frame, the bottom of stull (23) down is equipped with flashboard stagnant water rubber ring (26), the articulated department of two flashboards (2) is equipped with centre joint waterstop (27), the lower extreme and the flashboard stagnant water rubber ring (26) of centre joint waterstop (27) are connected.

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