A water stop curtain

Abstract

The application discloses a water-stop curtain, which comprises a plurality of steel pipe concretes and a supporting mechanism, the supporting mechanism comprises a supporting plate and a plurality of connecting assemblies, the plurality of steel pipe concretes are detachably and sealingly connected with each other along the length direction of the steel pipe concretes, each connecting assembly comprises a horizontal connecting part and a vertical connecting part, the horizontal connecting part is detachably and sealingly connected with two adjacent steel pipe concretes along the length direction of the steel pipe concretes, the supporting plate is L-shaped and arranged on one side of the plurality of steel pipe concretes, and the horizontal connecting part is connected with the horizontal connecting part and detachably connected with the supporting plate. The application helps to solve the problem that when a curtain is formed by mutually engaging concrete piles, the outside of a foundation pit is affected by rainfall, the underground water level changes, the engaged piles are unevenly stressed, and the stability of the water-stop curtain is difficult to guarantee.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water-stop curtain, in particular to a water-stop curtain. BACKGROUND

[0002] Water-stop curtain (foreign name Check the water curtain) refers to a concept, which is the general term of water-stop series outside the engineering main body. It is used to prevent or reduce the groundwater flowing into the foundation pit from the side wall and the bottom of the foundation pit.

[0003] At present, in the use process of the water-stop curtain, the curtain is formed by the mutual engagement of the concrete piles, but when it rains, the outside of the foundation pit will be affected, the groundwater level will change, and the engaged piles will be unevenly stressed, so that the stability of the water-stop curtain is difficult to guarantee. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a water-stop curtain with good stability.

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: a water-stop curtain, comprising a plurality of steel pipe concretes and a supporting mechanism, the supporting mechanism comprising a supporting plate and a plurality of connecting components, a plurality of the steel pipe concretes are detachably and sealingly connected with each other along the length direction of the steel pipe concretes, each of the connecting components comprises a horizontal connecting part and a vertical connecting part, the horizontal connecting part is detachably and sealingly connected with two adjacent steel pipe concretes along the length direction of the steel pipe concretes, the supporting plate is L-shaped and arranged on one side of the plurality of steel pipe concretes, the horizontal connecting part is connected with the horizontal connecting part and detachably connected with the supporting plate.

[0006] Further, a plurality of grooves are formed in the supporting plate and in one-to-one correspondence with the plurality of horizontal connecting parts, the supporting plate is provided with a fixing mechanism at the position corresponding to the groove, the fixing mechanism comprises a fixing component, the fixing component comprises a first gear, two second gears, two first threaded rods and two first clamping blocks;

[0007] The first gear is rotationally arranged in the supporting plate, one end of each of the two first threaded rods is rotationally connected to the two sides of the supporting plate and is centrally symmetric about the center of the groove, the two second gears are respectively engaged on the two sides of the first gear and are respectively connected with the two first threaded rods, and the two first clamping blocks are respectively threadedly connected to the positions of the two first threaded rods outside the supporting plate and are respectively slidingly connected with the supporting plate.

[0008] Further, the fixing assembly further comprises a third gear, a fourth gear, a second threaded rod and two second clamping blocks, the third gear is coaxially connected with the first gear, the second threaded rod is rotatably arranged on the support plate, the second threaded rod is symmetrically arranged with the first threaded rods with respect to the center of the groove, the fourth gear is arranged on the second threaded rod and is engaged with the third gear, the two second clamping blocks are respectively threadedly connected with the second threaded rod at positions outside the support plate, are respectively slidably connected with the support plate, and the two second clamping blocks are also symmetrically arranged with the first clamping blocks with respect to the center of the groove.

[0009] Further, the first threaded rod and the second threaded rod are arranged at an angle with the support plate.

[0010] Further, the fixing mechanism further comprises a driving assembly, the driving assembly comprises a plurality of fifth gears engaged with the first gears one by one and a control member for controlling synchronous rotation of the fifth gears.

[0011] Further, the control member comprises two transmission rods rotatably arranged in the support plate, a plurality of sixth gears arranged on one of the transmission rods and a plurality of seventh gears arranged on the other transmission rod, the sixth gears and the seventh gears are engaged with the fifth gears one by one.

[0012] The fixing assembly further comprises a limiting rod and a third threaded rod arranged perpendicularly on the groove bottom wall of the groove, a pressing block threadedly connected with the third threaded rod and slidably connected with the limiting rod, the third threaded rod is rotatably arranged on the groove bottom wall of the groove, the third threaded rod is connected with the shaft of the corresponding first gear, and one side of the transverse connecting portion is provided with a clearance slot for the limiting rod and the third threaded rod.

[0013] Further, the driving assembly further comprises a first helical gear, a receiving rod, two second helical gears and two connecting rods, the receiving rod is rotatably arranged in the middle of the support plate, the first helical gear is arranged in the support plate and connected with the receiving rod, the two connecting rods are rotatably arranged in the support plate and symmetrically arranged with respect to the first helical gear, the two second helical gears are respectively connected with one end of the two connecting rods and are engaged with the first helical gear, and the other ends of the two connecting rods are respectively connected with the shafts of the two fourth gears.

[0014] Further, the support plate is further provided with a guide strip with a concave arc-shaped contact surface along the length direction of the steel pipe concrete, and the guide strip is further rotatably provided with a plurality of rolling balls.

[0015] Further, the steel pipe concrete is provided with an O-shaped strip and a C-shaped strip on both sides along the length direction of the steel pipe concrete, and the O-shaped strip is in sliding fit with the C-shaped strip.

[0016] Further, the steel pipe concrete is provided with at least two convex strips on the outer side along the length direction of the steel pipe concrete, and the vertical connecting part is provided with at least two sliding grooves matched with the at least two convex strips, and the convex strips are in sliding fit with the sliding grooves.

[0017] The beneficial effects of the present application are embodied in that:

[0018] The water stop curtain is provided with steel pipe concrete and a supporting mechanism, the supporting mechanism comprises a supporting plate and a plurality of connecting assemblies, the connecting assembly comprises a horizontal connecting part and a vertical connecting part, in specific construction, a plurality of steel pipe concretes are spliced in the soil, i.e. in a curtain shape, the L-shaped supporting plate is located on one side of the plurality of steel pipe concretes and connected by the connecting assembly, thereby playing a supporting and stabilizing role on the steel pipe concrete, wherein the vertical connecting part is detachably and sealingly connected with the steel pipe concrete along the length direction of the steel pipe concrete, thereby not only maintaining the stability of the connection between the two adjacent steel pipe concretes, but also cooperating with the horizontal connecting part to maintain the stability of the connection between the plurality of steel pipe concretes and the supporting plate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a top view of the water stop curtain structure of the embodiment of the present application;

[0020] Figure 2 is an enlarged view of A of Figure 1

[0021] Figure 3 is an enlarged view of B of Figure 2

[0022] Figure 4 is a top view of the fixing mechanism structure of the embodiment of the present application;

[0023] Figure 5 is a side view of the fixing mechanism structure of the embodiment of the present application.

[0024] ​​The labels of the components in the drawings are as follows: 1, steel pipe concrete; 2, supporting mechanism; 201, supporting plate; 2011, groove; 2013, guide bar; 2014, ball; 202, connecting assembly; 2021, horizontal connecting part; 2022, vertical connecting part; 2023, accommodation groove; 2024, sliding groove; 3, fixing mechanism; 301, fixing assembly; 3011, first gear; 3012, second gear; 3013, first threaded rod; 3014, first clamping block; 3015, third gear; 3016, fourth gear; 3017, second threaded rod; 3018, second clamping block; 3019, limiting rod; 3010, third threaded rod; 30101, pressing block; 302, driving assembly; 3021, fifth gear; 3022, transmission rod; 3023, sixth gear; 3024, seventh gear; 3025, first helical gear; 3026, bearing rod; 3027, second helical gear; 3028, connecting rod; 4, O-shaped bar; 5, C-shaped bar; 6, convex bar. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application. In addition, if the present application has the description of “first”, “second” and the like, the description of “first”, “second” and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with “first”, “second” can explicitly or implicitly include at least one of the features. In addition, “multiple” means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0026] Reference Figure 1The water stop curtain of the present application comprises a plurality of steel pipe concretes 1 and a supporting mechanism 2, the supporting mechanism 2 comprises a supporting plate 201 and a plurality of connecting assemblies 202, the plurality of steel pipe concretes 1 are detachably and sealingly connected with each other along the length direction of the steel pipe concretes 1, each connecting assembly 202 comprises a horizontal connecting part 2021 and a vertical connecting part 2022, the horizontal connecting part 2021 is detachably and sealingly connected with two adjacent steel pipe concretes 1 along the length direction of the steel pipe concretes 1, the supporting plate 201 is L-shaped and arranged on one side of the plurality of steel pipe concretes 1, and the horizontal connecting part 2021 is connected with the horizontal connecting part 2021 and detachably connected with the supporting plate 201.

[0027] The water stop curtain of the present application comprises a plurality of steel pipe concretes 1 and a supporting mechanism 2, the supporting mechanism 2 comprises a supporting plate 201 and a plurality of connecting assemblies 202, the connecting assembly 202 comprises a horizontal connecting part 2021 and a vertical connecting part 2022, in the specific construction, the plurality of steel pipe concretes 1 are spliced in the soil, i.e. in the curtain shape, the L-shaped supporting plate 201 is arranged on one side of the plurality of steel pipe concretes 1 and connected through the connecting assembly 202, thereby playing a supporting and stabilizing role on the steel pipe concretes 1, wherein the vertical connecting part 2022 is detachably and sealingly connected with the steel pipe concretes 1 along the length direction of the steel pipe concretes 1, thereby not only maintaining the stability of the connection between the two adjacent steel pipe concretes 1 but also maintaining the stability of the connection between the plurality of steel pipe concretes 1 and the supporting plate 201 in cooperation with the horizontal connecting part 2021.

[0028] In the present application, the vertical connecting part 2022 is detachably and sealingly connected with the steel pipe concretes 1 along the length direction of the steel pipe concretes 1, thereby achieving a secondary sealing at the connection position of the two steel pipe concretes 1 and reducing the possibility of water leakage to a certain extent.

[0029] In the present application, the steel pipe concrete 1 is composed of a steel pipe and a steel reinforcement cage and concrete arranged in the steel pipe, in the specific construction, the steel pipe is first pressed into the soil for splicing, then the steel reinforcement cage is lowered and the concrete is injected to form the steel pipe concrete 1, since only the outer wall is in contact with the soil during the grouting process, the contact area between the grouting material and the soil is reduced, thereby reducing the pollution of the grouting material to the water quality of the underground water to a certain extent.

[0030] In an embodiment, referring to Figures 3 to 5 The supporting plate 201 is provided with a plurality of grooves 2011 corresponding to the plurality of horizontal connecting parts 2021, the supporting plate 201 is provided with a fixing mechanism 3 at the position of the grooves 2011, and the fixing mechanism 3 comprises a fixing assembly 301, the fixing assembly 301 comprises a first gear 3011, two second gears 3012, two first threaded rods 3013 and two first clamping blocks 3014.

[0031] The first gear 3011 is rotationally arranged in the support plate 201, one end of each of the two first threaded rods 3013 is rotationally connected to the two sides of the support plate 201 and is centrally symmetric about the center of the groove 2011, the two second gears 3012 are engaged on the two sides of the first gear 3011 and are connected with the two first threaded rods 3013 respectively, and the two first clamping blocks 3014 are threadedly connected to the positions of the two first threaded rods 3013 outside the support plate 201 and are slidingly connected with the support plate 201 respectively. In this way, when the support plate 201 is connected with the transverse connecting part 2021, the transverse connecting part 2021 is limited by the groove 2011, then the rotation of the first gear 3011 is used to rotate the two first threaded rods 3013, and the two first clamping blocks 3014 are used to clamp and connect the transverse connecting part 2021 from both sides. When the transverse connecting part 2021 is disassembled, the reverse operation can be performed, and in this embodiment, the support plate 201 is provided with a flat plate slidingly connected with the first clamping block 3014.

[0032] In an embodiment, referring to Figures 3 to 5 , the fixing assembly 301 further comprises a third gear 3015, a fourth gear 3016, a second threaded rod 3017 and two second clamping blocks 3018. The third gear 3015 is coaxially connected with the first gear 3011. The second threaded rod 3017 is rotationally arranged on the support plate 201, and the second threaded rod 3017 is symmetric about the center of the groove 2011 with the two first threaded rods 3013. The fourth gear 3016 is arranged on the second threaded rod 3017 and engaged with the third gear 3015. The two second clamping blocks 3018 are threadedly connected with the positions of the second threaded rod 3017 outside the support plate 201, slidingly connected with the support plate 201 respectively, and the two second clamping blocks 3018 are also symmetric about the center of the groove 2011 with the two first clamping blocks 3014. In this way, the rotation of the first gear 3011 can be used to rotate the two first threaded rods 3013 and the second threaded rod 3017 together, the first clamping block 3014 and the two second clamping blocks 3018 can be used to clamp and connect the transverse connecting part 2021, the support plate 201 and the transverse connecting part 2021 can be fixed from both sides of the support plate 201 and both sides of the transverse connecting part 2021, the fixing effect is good, and only the rotation of the first gear 3011 is needed. In this embodiment, the support plate 201 is provided with a flat plate slidingly connected with the second clamping block 3018.

[0033] In an embodiment, referring to Figure 4, the first threaded rod 3013 and the second threaded rod 3017 are both formed with an angle of 45 degrees with the support plate 201. In this way, when the first clamping block 3014 and the two second clamping blocks 3018 are close to the transverse connecting part 2021, the two sides of the first clamping block 3014 are respectively attached to the support plate 201 and the transverse connecting part 2021, so that the clamping effect is good.

[0034] In an embodiment, referring to Figure 4 , the fixing mechanism 3 further comprises a driving assembly 302, the driving assembly 302 comprises a plurality of fifth gears 3021 engaged with the plurality of first gears 3011 one by one and a control member for controlling the synchronous rotation of the plurality of fifth gears 3021. In this way, the simultaneous control of the plurality of fixing assemblies 301 is realized through the driving assembly 302, so that it is more convenient to connect the support plate 201 and the transverse connecting part 2021.

[0035] In an embodiment, referring to Figure 3 and Figure 4 , the control member comprises two transmission rods 3022 rotatably arranged in the support plate 201 at intervals, a plurality of sixth gears 3023 arranged on one of the transmission rods 3022 at intervals and a plurality of seventh gears 3024 arranged on the other transmission rod 3022 at intervals, the plurality of sixth gears 3023 and the plurality of seventh gears 3024 are engaged with the plurality of fifth gears 3021 one by one;

[0036] The fixing assembly 301 further comprises a limiting rod 3019 and a third threaded rod 3010 arranged vertically on the groove bottom wall of the groove 2011, and a pressing block 30101 threadedly connected with the third threaded rod 3010 and slidingly connected with the limiting rod 3019, and the third threaded rod 3010 is rotatably arranged on the groove bottom wall of the groove 2011, and the third threaded rod 3010 is connected with the shaft center of the corresponding first gear 3011, and one side of the transverse connecting part 2021 is provided with a gap slot 2023 through which the limiting rod 3019 and the third threaded rod 3010 pass. In this way, when it is needed to connect the support plate 201 and the transverse connecting part 2021, the transverse connecting part 2021 is first limited in the groove 2011, the third threaded rod 3010 and the limiting rod 3019 are located in the gap slot 2023, then the fifth gear 3021 is rotated to drive the first gear 3011 to rotate, so that the first clamping block 3014 and the two second clamping blocks 3018 are close to the transverse connecting part 2021 to clamp the transverse connecting part 2021, and at the same time, the pressing block 30101 is moved downward to press the transverse connecting part 2021, so that the stability of the connection between the transverse connecting part 2021 and the support plate 201 is ensured.

[0037] In an embodiment, referring toFigure 4 The driving assembly 302 further comprises a first bevel gear 3025, a receiving rod 3026, two second bevel gears 3027 and two connecting rods 3028. The receiving rod 3026 is rotatably arranged in the middle of the support plate 201. The first bevel gear 3025 is arranged in the support plate 201 and connected with the receiving rod 3026. The two connecting rods 3028 are rotatably arranged in the support plate 201 and symmetrically arranged with respect to the first bevel gear 3025. The two second bevel gears 3027 are connected with one ends of the two connecting rods 3028 respectively and engaged with the first bevel gear 3025 respectively. The other ends of the two connecting rods 3028 are connected with the shafts of the two fourth gears 3016 respectively. In this way, when the support plate 201 is connected with the transverse connecting part 2021, the receiving rod 3026 only needs to be rotated, and multiple fixing assemblies 301 can be operated simultaneously, thereby reducing the construction time.

[0038] In an embodiment, referring to Figure 1 The support plate 201 is further provided with a guide strip 2013 with a concave arc-shaped contact surface along the length direction of the steel pipe concrete 1. The guide strip 2013 is further rotatably provided with a plurality of rolling balls 2014. In this way, after the steel pipe concrete 1 is installed, the support plate 201 can be stably placed by being placed on the outer surface of different steel pipe concretes 1, and then connected with the connecting assembly 202 to realize the connection with the steel pipe concrete 1.

[0039] In an embodiment, referring to Figure 1 The two sides of the steel pipe concrete 1 are respectively provided with an O-shaped strip 4 and a C-shaped strip 5 along the length direction of the steel pipe concrete 1, and the O-shaped strip 4 can be slidably connected with the C-shaped strip 5. In this way, the two steel pipe concretes 1 can be detachably connected. In this embodiment, the back surface of the C-shaped strip 5 is parallelly and lengthwise welded with the outer wall of the steel pipe concrete 1, and the outer surface of the O-shaped strip 4 is parallelly and lengthwise welded with the outer wall of the steel pipe concrete 1.

[0040] In an embodiment, referring to Figure 2 The outer side of the steel pipe concrete 1 is further provided with at least two protrusions 6 along the length direction of the steel pipe concrete 1. The vertical connecting part 2022 is provided with at least two sliding grooves 2024 matched with the at least two protrusions 6. The protrusions 6 can be slidably connected with the sliding grooves 2024. In this way, the connection position of the two steel pipe concretes 1 is sealed again, and the water seepage path is lengthened, thereby reducing the possibility of water leakage to a certain extent.

[0041] In summary, the water stop curtain embodiment of the present application is provided with steel pipe concrete 1 and supporting mechanism 2, the supporting mechanism 2 includes supporting plate 201 and multiple connecting assemblies 202, the connecting assembly 202 includes horizontal connecting part 2021 and vertical connecting part 2022, in specific construction, multiple steel pipe concretes 1 are spliced in soil, namely curtain shape, the L-shaped supporting plate 201 is located at one side of multiple steel pipe concretes 1 and is connected by the connecting assembly 202, namely play the role of supporting and keeping stable to the steel pipe concrete 1, wherein the vertical connecting part 2022 is detachably connected with the steel pipe concrete 1 along the length direction, not only keep the stability of the connection between adjacent two steel pipe concretes 1, but also cooperate with the horizontal connecting part 2021, keep the stability of the connection between multiple steel pipe concretes 1 and the supporting plate 201.

[0042] It should be understood that the examples and embodiments described herein are for illustration only and are not intended to limit the present application, and those skilled in the art can make various modifications or changes according to it, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A water-stop curtain, characterized in that, The system includes multiple steel-concrete composite pipes (1) and a support mechanism (2). The support mechanism (2) includes a support plate (201) and multiple connecting components (202). The multiple steel-concrete composite pipes (1) are detachably and sealed to each other along their own length direction. Each connecting component (202) includes a transverse connecting part (2021) and a vertical connecting part (2022). The transverse connecting part (2021) is detachably and sealed to two adjacent steel-concrete composite pipes (1) along the length direction of the steel-concrete composite pipes (1). The support plate (201) is L-shaped and is located on one side of the multiple steel-concrete composite pipes (1). The transverse connecting part (2021) is detachably connected to the support plate (201). The support plate (201) has a plurality of grooves (2011) that are inserted into and fitted one by one with the plurality of transverse connecting parts (2021). The support plate (201) is provided with a fixing mechanism (3) at the corresponding position of the groove (2011). Each fixing mechanism (3) includes a fixing component (301). The fixing component (301) includes a first gear (3011), two second gears (3012), two first threaded rods (3013), and two first clamping blocks (3014). The first gear (3011) is rotatably disposed in the support plate (201). One end of each of the two first threaded rods (3013) is rotatably connected to both sides of the support plate (201) and is centrally symmetrical about the center of the groove (2011). Two second gears (3012) are respectively meshed with both sides of the first gear (3011) and are respectively connected to the two first threaded rods (3013). Two first clamping blocks (3014) are respectively threaded to the positions of the two first threaded rods (3013) located outside the support plate (201) and are respectively slidably connected to the support plate (201). The fixing assembly (301) further includes a third gear (3015), a fourth gear (3016), a second threaded rod (3017), and two second clamping blocks (3018). The third gear (3015) is coaxially connected to the first gear (3011). The second threaded rod (3017) is rotatably mounted on the support plate (201), and the second threaded rod (3017) and the two first threaded rods (3013) are symmetrical about the center of the groove (2011). The fourth gear (3016) is mounted on the second threaded rod (3017) and meshes with the third gear (3015). The two second clamping blocks (3018) are threaded to the second threaded rod (3017) at a position outside the support plate (201) and are slidably connected to the support plate (201). The two second clamping blocks (3018) and the two first clamping blocks (3014) are also symmetrical about the center of the groove (2011). The outer side of the steel pipe concrete (1) is provided with at least two protrusions (6) along its own length direction. The vertical connecting part (2022) is provided with at least two sliding grooves (2024) that match the at least two protrusions (6). The protrusions (6) can slide with the sliding grooves (2024).

2. The water-stop curtain according to claim 1, characterized in that, The first threaded rod (3013) and the second threaded rod (3017) both form a 45-degree angle with the support plate (201).

3. The water-stop curtain according to claim 1, characterized in that, The fixing mechanism (3) further includes a drive assembly (302), which includes a plurality of fifth gears (3021) that mesh one-to-one with a plurality of first gears (3011) and a control component for controlling the synchronous rotation of the plurality of fifth gears (3021).

4. The water-stop curtain according to claim 3, characterized in that, The control component includes two spaced transmission rods (3022) rotatably disposed within the support plate (201), a plurality of sixth gears (3023) spaced apart on one of the transmission rods (3022), and a plurality of seventh gears (3024) spaced apart on the other transmission rod (3022). The plurality of sixth gears (3023) and the plurality of seventh gears (3024) are all meshed with the plurality of fifth gears (3021) in a one-to-one correspondence. The fixing component (301) further includes a limiting rod (3019) and a third threaded rod (3010) vertically disposed on the bottom wall of the groove (2011), and a pressure block (30101) threadedly connected to the third threaded rod (3010) and slidably connected to the limiting rod (3019). The third threaded rod (3010) is rotatably disposed on the bottom wall of the groove (2011), and the third threaded rod (3010) is connected to the axis of the corresponding first gear (3011). A clearance groove (2023) is provided on one side of the transverse connecting part (2021) for the limiting rod (3019) and the third threaded rod (3010) to pass through.

5. The water-stop curtain according to claim 4, characterized in that, The drive assembly (302) further includes a first helical gear (3025), a receiving rod (3026), two second helical gears (3027), and two connecting rods (3028). The receiving rod (3026) is rotatably disposed in the middle of the support plate (201). The first helical gear (3025) is disposed in the support plate (201) and connected to the receiving rod (3026). The two connecting rods (3028) are respectively rotatably disposed in the support plate (201) and symmetrical about the first helical gear (3025). The two second helical gears (3027) are respectively connected to one end of the two connecting rods (3028) and respectively mesh with the first helical gear (3025). The other end of the two connecting rods (3028) is respectively connected to the axis of the two fifth gears (3021).

6. The water-stop curtain according to any one of claims 1 to 5, characterized in that, The support plate (201) is also provided with a guide strip (2013) with a concave arc-shaped contact surface along the length direction of the steel pipe concrete (1), and the contact surface of the guide strip (2013) is also provided with a plurality of ball bearings (2014).

7. The water-stop curtain according to any one of claims 1 to 5, characterized in that, The steel pipe concrete (1) on both sides of the water-stop curtain is provided with O-shaped strips (4) and C-shaped strips (5) along its own length direction, and the O-shaped strips (4) can slide with the C-shaped strips (5).

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