A flood control box for water conservancy projects

Abstract

The present invention relates to the technical field of flood control devices, and discloses a flood control box for water conservancy projects, including a box body, one side of the box body is fixedly connected with a convex plate, the other side of the box body is provided with an extension plate for sealing with the convex plate, and the front and rear end surfaces of the convex plate are fixedly provided with a No. 1 sealing airbag. The present invention drives the sliding plug in the cylinder to move back and forth under the gravity of the counterweight through the support plate, and cooperates with the ventilation pipe to lower the support plate in two times, so that the No. 1 sealing airbag is expanded to seal and fix the convex plate and the extension plate, and then the length of the water retaining structure is adjusted, and after the adjustment is completed, the No. 1 air valve is opened to allow gas to enter the No. 1 sealing airbag, and the sealing of the connection between the convex plate and the extension plate and the sealing between the extended extension plate and the corresponding box body are successively completed without causing wear of the airbag, which is conducive to extending the service life of the sealing mechanism and improving the convenience of operation.

Description

Technical Field

[0001] The invention relates to the technical field of flood prevention devices, in particular to a flood prevention box used in water conservancy projects. Background Art

[0002] The flood prevention box is a flood prevention device that replaces traditional sandbags and is used to splice to form a water retaining structure. The existing flood prevention box includes a box body. When flood prevention work is carried out, the flood prevention box is manually transported to the flood prevention site. The bottom of the flood prevention box is provided with soil nails for fixing the position. The soil nails are inserted into the soil to fix the box body, and the box body of the flood prevention box is filled with bulk materials such as sand, gravel, soil, or sandbags for counterweight. T-shaped grooves and T-shaped plates are respectively provided on both sides of the flood prevention box. During the splicing process, the T-shaped plate of the flood prevention box is inserted into the T-shaped groove of the adjacent flood prevention box, so that the two adjacent flood prevention boxes are connected by snapping. Several flood prevention boxes are snapped in turn to form a water retaining structure to complete flood prevention.

[0003] However, during the use of traditional flood prevention boxes, there are assembly gaps at the direct joints of adjacent flood prevention boxes. Some water will leak out through the gaps in the retaining structure formed, reducing the water-retaining performance of the water-retaining structure. Reducing the assembly gap and adding sealing gaskets will easily lead to difficulties in embedding the T-plate and T-slot and cause additional wear of the sealing gaskets, delaying the progress of flood prevention work, and it is difficult to ensure the sealing performance of the flood prevention boxes when they are reused. Summary of the invention

[0004] In view of the shortcomings of the existing flood prevention boxes mentioned in the background technology during use, the present invention provides a flood prevention box for water conservancy projects, which has the advantages of easy splicing between flood prevention boxes, ensuring sealing performance without wearing the sealing airbags, and facilitating the reuse of the flood prevention boxes, thereby solving the technical problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a flood prevention box for water conservancy projects, comprising a box body, one side of the box body is fixedly connected to a convex plate, the other side of the box body is provided with an extension plate for sealing in conjunction with the convex plate, the front and rear end surfaces of the convex plate are fixedly provided with a No. 1 sealing air bag, and the inner side of the box body is provided with an inflation mechanism.

[0006] A support plate is slidably sleeved on the inner side of the box body. The movement of the support plate can activate the inflation mechanism to send gas into the No. 1 sealing airbag, so that the No. 1 sealing airbag can be inflated to expand the gap between the sealing convex plate and the extension plate, and fix the extension plate in cooperation with the convex plate.

[0007] Preferably, the inflation mechanism comprises a compression mechanism and a connecting rod, one end of the connecting rod is fixedly connected to the support plate, the support plate cooperates with the connecting rod to drive the compression mechanism to compress gas, and the compression mechanism is fixedly connected with an intake pipe for intake;

[0008] One end of the air intake pipe is fixedly connected with a No. 2 one-way valve for gas to enter the compression mechanism through the air intake pipe in one direction. The compression mechanism is fixedly connected with a distribution pipe. The interior of the convex plate is fixedly provided with No. 1 air pipes corresponding to two No. 1 sealing air bags respectively. The compression mechanism is connected with the cavities of the two No. 1 sealing air bags through the distribution pipe and the No. 1 air pipe.

[0009] Preferably, the compression mechanism comprises a cylinder, the cylinder is fixedly connected to the box, a sliding plug for compressing the gas in the cylinder is slidably sleeved on the inner side of the cylinder, and a connecting pipe for connecting the top and bottom cavities of the sliding plug is fixedly provided on one side of the sliding plug;

[0010] A one-way valve for gas to pass from the top of the connecting pipe to the bottom of the connecting pipe is fixedly arranged at one end of the connecting pipe, and a moving rod is fixedly connected at the midpoint of the top surface of the sliding plug. The cylinder is connected to the distribution pipe and the air intake pipe.

[0011] Preferably, a support shaft is rotatably connected to one side of the inner wall of the box body, one end of the support shaft body is fixedly sleeved with a transmission gear, the other end of the support shaft body is fixedly sleeved with a transmission rod, one end of the transmission rod is hinged with a connecting rod, one end of the connecting rod is hinged to the moving rod, and the bottom of the connecting rod is fixedly connected with a rack, and the rack and the transmission gear are meshed with each other.

[0012] Preferably, a fixing rod is fixedly connected to one side of the box body, and a baffle for limiting the sliding range of the extension plate is fixedly connected to one side of the fixing rod.

[0013] Preferably, a No. 2 air pipe is fixedly provided inside the box body, the distribution pipe is connected to the No. 2 air pipe, a No. 2 sealing air bag for sealing the sliding surface between the extension plate and the corresponding box body is fixedly provided on one side of the box body, the No. 2 air pipe is connected to the cavity of two No. 2 sealing air bags through a pipeline, and a No. 1 air valve is fixedly provided on the No. 2 air pipe body.

[0014] Preferably, the bottom of the box body is provided with soil nails for fixing the box body, and the bottom outside the soil nails is fixedly provided with anti-retraction nails, the anti-retraction nails are arranged obliquely and the number is set to at least one, the bottom of the box body is fixedly connected to a baffle, the baffle is slidably sleeved with the soil nails, the top of the soil nails is fixedly connected to a spring seat, the bottom of the spring seat is fixedly connected to a No. 1 spring, and the bottom of the box body is provided with a positioning hole for the soil nails to extend.

[0015] Preferably, a connecting groove is provided on the water-blocking side of the convex plate, and the inner sliding sleeve of the convex plate is provided with two movable plates for respectively compressing two No. 1 sealing airbags, and one side of the movable plate is connected to the connecting groove cavity.

[0016] Preferably, a ventilation pipe is fixedly provided at the front end of the box body, the No. 2 air pipe is connected to the ventilation pipe, and a No. 2 air valve is fixedly provided at one end of the ventilation pipe.

[0017] Preferably, a No. 2 spring is fixedly connected to the bottom of the support plate, and a box cover is provided on the top of the box body.

[0018] The present invention has the following beneficial effects:

[0019] 1. The present invention connects two flood control boxes by mutually nesting the convex plate and the extension plate, and fills the box body corresponding to the convex plate with counterweight materials, so that the support plate cooperates with the connecting rod to drive the rack to move, and the rack cooperates with the transmission gear to drive the transmission rod to rotate, and then drives the sliding plug to reciprocate to compress the gas in the cylinder, and the force of the support plate is alternately changed through the reciprocating movement of the sliding plug, which drives the shaking of the support plate itself during the movement process, improves the density of the bulk material when filling the bulk material, and facilitates the counterweight work. At the same time, the compressed gas enters the No. 1 sealing airbag to expand the No. 1 sealing airbag, seals the assembly gap between the convex plate and the extension plate, completes the sealing of the convex plate and the extension plate without causing additional wear to the No. 1 sealing airbag, and locks the extension plate through the No. 1 sealing airbag, which is convenient for the subsequent extension of the extension plate, thereby improving the convenience of operation.

[0020] 2. The present invention extends the extension plate first after the support plate stops descending to the rated height, thereby increasing the length of the water retaining structure, so as to facilitate the adjustment of the length of the water retaining structure according to the needs of flood control. After the No. 1 air valve is opened, the gas compressed by the cylinder enters the No. 2 air bag, so that the No. 2 air bag expands to seal the sliding gap between the extended extension plate and the corresponding box body and locks the extension plate. The expansion of the No. 2 air bag and the descending action of the support plate are controlled by controlling the connection of the No. 2 air pipe, and the sealing between the extension plate and the corresponding box body is completed without wearing the No. 2 air bag. While being able to adjust the length of the water retaining structure, the service life of the sealing structure is further extended. At the same time, the secondary descending process of the support plate drives the soil nails to extend out of the box body to fix the flood control box, thereby further improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection structure of the flood control box of the present invention;

[0022] Figure 2 For the present invention Figure 1 A magnified view of the structure at A;

[0023] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified view of the structure at B in FIG.

[0025] Figure 5 For the present invention Figure 3 A magnified view of the structure at C in FIG.

[0026] Figure 6 This is a schematic diagram of the gas pipeline structure connection of the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified view of the structure at D in FIG.

[0028] Figure 8 For the present invention Figure 6 A magnified view of the structure at E in FIG.

[0029] Fig. 9 It is a schematic cross-sectional view of the structure of the connection groove of the present invention.

[0030] In the figure: 1. box body; 2. convex plate; 3. extension plate; 4. baffle; 5. No. 1 sealing airbag; 6. No. 2 sealing airbag; 7. movable plate; 8. fixing rod; 9. connecting groove; 10. connecting rod; 11. spring seat; 12. soil nail; 13. No. 1 spring; 14. support plate; 15. No. 2 spring; 16. baffle cover; 17. backstop nail; 18. positioning hole; 19. transmission rod; 20. box cover; 21. supporting shaft; 22. connecting rod; 23. moving rod; 24. cylinder; 25. sliding plug; 26. connecting pipe; 27. No. 1 one-way valve; 28. intake pipe; 29. ​​No. 2 one-way valve; 30. distribution pipe; 31. No. 1 air pipe; 32. rack; 33. transmission gear; 34. No. 1 air valve; 35. ventilation pipe; 36. No. 2 air valve; 37. No. 2 air pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0032] See also Figure 1-Figure 4 and Figure 6-Figure 8, A flood control box for water conservancy projects, including a box body 1. A box cover 20 is provided at the top of the box body 1. The box cover 20 can be opened so as to fill the box body 1 with counterweight materials. A convex plate 2 is fixedly connected to one side of the box body 1. The height of the convex plate 2 is the same as that of the box body 1. An extension plate 3 for cooperating with the convex plate 2 for sealing is provided on the other side of the box body 1. The extension plate 3 is in an inverted "C" shape. The extension plate 3 can be sleeved outside the convex plate 2 of another flood control box, and a rated assembly gap is left, which is convenient for splicing between flood control boxes. Refer to Figure 2 , One-way sealing air bags 5 are fixedly provided on the front and rear end faces of the convex plate 2. The one-way sealing air bags 5 are used to seal the assembly gap between the extension plate 3 and the convex plate 2. A cylinder 24 is fixedly provided on one side of the inner wall of the box body 1. A sliding plug 25 for compressing the gas in the cylinder 24 is slidably sleeved inside the cylinder 24. A communication pipe 26 for communicating the top and bottom cavities of the sliding plug 25 is fixedly provided on one side of the sliding plug 25.

[0033] One end of the communication pipe 26 is fixedly provided with a first one-way valve 27 for gas to pass unidirectionally from the top of the communication pipe 26 to the bottom through the communication pipe 26. The top of the cylinder 24 is fixedly connected with an air inlet pipe 28 for air intake. One end of the air inlet pipe 28 is fixedly connected with a second one-way valve 29 for gas to pass unidirectionally through the air inlet pipe 28 into the cylinder 24. One end of the air inlet pipe 28 is communicated with the air. The midpoint of the top surface of the sliding plug 25 is fixedly connected with a moving rod 23. The moving rod 23 drives the sliding plug 25 to reciprocate up and down. When the sliding plug 25 moves up, the air in the cavity above the sliding plug 25 in the cylinder 24 is compressed and passes unidirectionally through the first one-way valve 27 into the cavity below. When the sliding plug 25 moves down, the air in the cavity below the sliding plug 25 in the cylinder 24 is compressed. At this time, the air enters the top of the cylinder 24 through the air inlet pipe 28 through the second one-way valve 29. The reciprocating movement of the sliding plug 25 forms a cycle of compressed gas.

[0034] The bottom of the cylinder 24 is fixedly connected with a distribution pipe 30. Inside the convex plate 2, first air pipes 31 corresponding to the two one-way sealing air bags 5 are fixedly provided. The two ends of the first air pipe 31 are respectively communicated with the cavities of the two one-way sealing air bags 5. The cylinder 24 is communicated with the first air pipe 31 through the distribution pipe 30. When the cylinder 24 compresses gas, the compressed gas enters the two one-way sealing air bags 5 through the distribution pipe 30 and the first air pipe 31, causing the one-way sealing air bags 5 to expand, sealing the assembly gap between the convex plate 2 and the extension plate 3, and locking the relative position of the extension plate 3 and the convex plate 2 through the friction force between the one-way sealing air bags 5 and the extension plate 3.

[0035] A connecting rod 10 is slidably arranged on one side of the box body 1. A support plate 14 is slidably sleeved inside the box body 1. One end of the connecting rod 10 is fixedly connected to the central position of the support plate 14. A support shaft 21 is rotatably connected to one side of the inner wall of the box body 1. Refer to Figure 7One end of the support shaft 21 is fixedly sleeved with a transmission gear 33, and the other end of the support shaft 21 is fixedly sleeved with a transmission rod 19, one end of the transmission rod 19 is hinged with a connecting rod 22, and one end of the connecting rod 22 is hinged with the moving rod 23. When splicing the flood control boxes, the extension plate 3 is sleeved onto the outer side of the convex plate 2 corresponding to the other flood control box. At this time, the No. 1 sealing airbag 5 is in a contracted state, which will not cause additional wear of the No. 1 sealing airbag 5. The counterweight material is filled into the box body 1 corresponding to the convex plate 2, and the counterweight material drives the support plate 14 to move downward, and the support plate 14 drives the connecting rod 10 to move downward. The bottom of the connecting rod 10 is fixedly connected with a rack 32, and the rack 32 is meshed with the transmission gear 33. The movement of the connecting rod 10 drives the rack 32 to move.

[0036] The transmission gear 33 is driven by the rack 32 to rotate, and the transmission gear 33 drives the transmission rod 19 to rotate coaxially. The transmission rod 19 cooperates with the connecting rod 22 to drive the moving rod 23 to move up and down reciprocatingly, and the gas cycle of the cylinder 24 is compressed to the cavity of the No. 1 sealing airbag 5 to inflate. The No. 1 sealing airbag 5 expands, seals the gap and fixes the extension plate 3, completes the splicing between the flood control boxes, completes the splicing seal without wearing the No. 1 sealing airbag 5, and completes the fixation between the No. 1 sealing airbag 5 and the extension plate 3 through the convex plate 2 to complete the two adjacent flood control boxes. The two parts are mutually locked, and when the material filled in the box body 1 is bulk material, since the resistance when the sliding plug 25 in the cylinder 24 compresses the gas is greater than the resistance received when the sliding plug moves upward, the force acting in the opposite direction on the support plate 14 is large and small alternately, so that when the support plate 14 moves under the gravity of the counterweight material, it will shake due to the alternating changes in the size of the resistance, which is beneficial to the compaction of the bulk material on the top of the support plate 14, and there is no need to manually vibrate and compact the bulk material in the box body 1, ensuring that there is enough counterweight in the flood control box, and ensuring the reliability of the use of the flood control box.

[0037] A No. 2 spring 15 is fixedly connected to the bottom of the support plate 14. The No. 2 spring 15 is used to push the support plate 14 to reset after the counterweight material in the box 1 is unloaded. A No. 2 air pipe 37 is fixedly set inside the box 1, and a ventilation pipe 35 is fixedly set at the front end of the box 1. The distribution pipe 30 is connected with the No. 2 air pipe 37, and the No. 2 air pipe 37 is connected with the ventilation pipe 35. One end of the ventilation pipe 35 is located on the outside of the box 1, and one end of the air inlet pipe 28 is located on the outside of the convex plate 2. A No. 2 air valve 36 is fixedly set at the end of the ventilation pipe 35 located on the outside of the box 1. The No. 2 air valve 36 can be set as a ball valve. When the support plate 14 is reset, the ball valve is manually opened to discharge the gas in the No. 1 sealing airbag 5, so that the support plate 14 can move smoothly. Example 2

[0038] See also Figure 1-Figure 6 and Figure 8On the basis of the first embodiment, a fixing rod 8 is fixedly connected to one side of the box body 1, and a baffle 4 for limiting the sliding range of the extension plate 3 is fixedly connected to one side of the fixing rod 8. The fixing rod 8 is slidably sleeved with the extension plate 3. A No. 2 sealing airbag 6 for sealing the sliding surface between the extension plate 3 and the corresponding box body 1 is fixedly arranged on one side of the box body 1. The No. 2 air pipe 37 is connected to the cavity of the two No. 2 sealing airbags 6 through a pipeline. The No. 1 air valve 34 is fixedly arranged on the body of the No. 2 air pipe 37. The No. 1 air valve 34 can be set as a ball valve. When the No. 1 sealing airbag 5 After the gap between the inflated sealing convex plate 2 and the extended plate 3 is filled, the support plate 14 drops to the rated height. Since the expansion of the No. 1 sealing airbag 5 is limited, the cylinder 24 stops compressing the gas, and the connecting rod 10 drives the support plate 14 to remain in the rated position. At this time, the box body 1 corresponding to the extension plate 3 is moved so that the extension plate 3 extends relative to the corresponding box body 1. When the extension plate 3 has been assembled with the convex plate 2, the length of the water retaining structure is extended, which makes it easier for the flood control box to adapt to the needs of flood control of different lengths, saves the steps of pulling out the extension plate 3 and positioning it, and is easy to operate.

[0039] After the extension plate 3 is extended, the No. 1 air valve 34 is manually opened, the support plate 14 continues to descend, and the compressed gas of the cylinder 24 is sent into the No. 2 sealing airbag 6 and the No. 1 sealing airbag 5 after the gas volume is balanced. The No. 2 sealing airbag 6 seals the sliding sealing surface between the extension plate 3 and the corresponding box body 1 and fixes the extension plate 3. When the extension plate 3 is extended and retracted without wearing the No. 2 sealing airbag 6, the extension plate 3 and the box body 1 after the position is determined are sealed, thereby improving the flexibility of splicing and use of the flood control box, and extending the service life of the sealing structure of the flood control box, which is further conducive to the reuse of the flood control box.

[0040] The bottom of the box body 1 is provided with soil nails 12 for fixing the box body 1, and the bottom of the outer side of the soil nail 12 is fixedly provided with a back-stop nail 17, the back-stop nail 17 is inclined and the number is at least one, the bottom of the box body 1 is fixedly connected with a baffle 16, the baffle 16 is slidably sleeved with the soil nail 12, the baffle 16 can prevent the back-stop nail 17 from rising, the number of the soil nail 12 is at least one, the top of the soil nail 12 is fixedly connected with a spring seat 11, the bottom of the spring seat 11 is fixedly connected with a No. 1 spring 13, the No. 1 spring 13 is used to drive the soil nail 12 to retract into the box body 1, and the bottom of the box body 1 is provided with a spring seat 11, the spring seat 11 is fixedly connected with a spring seat 13, and the spring seat 13 is used to drive the soil nail 12 to retract into the box body 1. The positioning hole 18 through which the nail 12 extends, when the No. 2 sealing airbag 6 is inflated, the support plate 14 continues to move to against the top surface of the spring seat 11, the support plate 14 pushes the spring seat 11 down, and the spring seat 11 drives the soil nail 12 to be inserted into the soil below. After the length of the water retaining structure is determined, the position is automatically fixed, and the convenience of splicing the flood prevention box is further adjusted. The anti-retraction nail 17 increases the resistance of the soil nail 12 to be pulled out of the soil, improves the stability of the fixation of the soil nail 12, and cooperates with the baffle 16 to prevent the soil nail 12 from detaching from the positioning hole 18 after rebounding. When the support plate 14 descends for the second time, the counterweight material can continue to be filled. Example 3

[0041] See also Fig. 9 On the basis of the second embodiment, a connecting groove 9 is provided on the water-retaining side of the convex plate 2, and two movable plates 7 for respectively compressing the two No. 1 sealing airbags 5 are slidably sleeved inside the convex plate 2. One side of the movable plate 7 is connected to the cavity of the connecting groove 9. When the impact of the flood is too large, the water pressure in the connecting groove 9 increases, pushing the movable plate 7 to further compress the No. 1 sealing airbag 5, and increasing the sealing strength when deformation may occur between the convex plate 2 and the extension plate 3, thereby ensuring the water-retaining performance of the water-retaining structure.

[0042] The method of use (working principle) of the present invention is as follows:

[0043] Move the flood prevention box to the flood prevention position, and put the extension plate 3 on the outer side of the corresponding convex plate 2 of the adjacent flood prevention box. Fill the box body 1 with materials for counterweight, open the box cover 20 corresponding to the convex plate 2 of the box body 1, and the materials drive the support plate 14 to move. The support plate 14 cooperates with the connecting rod 10 and the rack 32 to drive the transmission gear 33 to rotate. The transmission gear 33 cooperates with the support shaft 21, the transmission rod 19, the connecting rod 22 and the moving rod 23 to drive the sliding plug 25 to move back and forth, and the gas in the circulating compressed cylinder 24 is filled into the No. 1 sealing airbag. 5, so that the No. 1 sealing airbag 5 seals the gap between the convex plate 2 and the extension plate 3, and the convex plate 2 locks the extension plate 3, the support plate 14 drops to the rated height, the box body 1 corresponding to the extension plate 3 is moved, the extension length of the extension plate 3 is increased, the No. 1 air valve 34 is opened, the support plate 14 continues to drop, and the compressed gas of the cylinder 24 is sent into the No. 2 sealing airbag 6 to lock the extended extension plate 3, and at the same time, the spring seat 11 is cooperated to drive the soil nails 12 to be inserted into the soil to complete the fixation of the box body 1, and the flood control boxes are spliced ​​in turn to form a water retaining structure.

Claims

1. A flood prevention box for water conservancy projects, comprising a box body (1), characterized in that: A convex plate (2) is fixedly connected to one side of the box body (1), an extension plate (3) for cooperating with the convex plate (2) for sealing is provided on the other side of the box body (1), a No. 1 sealing airbag (5) is fixedly provided on the front and rear end surfaces of the convex plate (2), and an inflation mechanism is provided on the inner side of the box body (1); A support plate (14) is slidably sleeved on the inner side of the box body (1), and the movement of the support plate (14) enables the inflation mechanism to operate and deliver gas into the No. 1 sealing airbag (5), so that the No. 1 sealing airbag (5) can be inflated to expand the gap between the sealing convex plate (2) and the extension plate (3), and cooperate with the convex plate (2) to fix the extension plate (3); The inflation mechanism comprises a compression mechanism and a connecting rod (10), one end of the connecting rod (10) being fixedly connected to a support plate (14), the support plate (14) cooperating with the connecting rod (10) to drive the compression mechanism to compress gas, and the compression mechanism being fixedly connected to an air intake pipe (28) for air intake; One end of the air inlet pipe (28) is fixedly connected to a No. 2 one-way valve (29) for gas to enter the compression mechanism through the air inlet pipe (28) in one direction, the compression mechanism is fixedly connected to a distribution pipe (30), and No. 1 air pipes (31) corresponding to the two No. 1 sealing air bags (5) are fixedly arranged inside the convex plate (2), and the compression mechanism is connected to the cavities of the two No. 1 sealing air bags (5) through the distribution pipe (30) and the No. 1 air pipe (31); The compression mechanism comprises a cylinder (24), the cylinder (24) being fixedly connected to the housing (1), a sliding plug (25) for compressing the gas in the cylinder (24) being slidably sleeved on the inner side of the cylinder (24), and a connecting pipe (26) for connecting the top and bottom cavities of the sliding plug (25) being fixedly provided on one side of the sliding plug (25); A first one-way valve (27) for gas to pass from the top of the connecting pipe (26) to the bottom of the connecting pipe (26) is fixedly provided at one end of the connecting pipe (26); a moving rod (23) is fixedly connected at the midpoint of the top surface of the sliding plug (25); and the cylinder (24) is in communication with the distribution pipe (30) and the air intake pipe (28); A No. 2 air pipe (37) is fixedly arranged inside the box (1), the distribution pipe (30) is in communication with the No. 2 air pipe (37), a No. 2 sealing air bag (6) for sealing a sliding surface between the extension plate (3) and the corresponding box (1) is fixedly arranged on one side of the box (1), the No. 2 air pipe (37) is in communication with the cavities of the two No. 2 sealing air bags (6) through a pipeline, and a No. 1 air valve (34) is fixedly arranged on the body of the No. 2 air pipe (37).

2. A flood prevention box for water conservancy projects according to claim 1, characterized in that: A support shaft (21) is rotatably connected to one side of the inner wall of the box body (1); a transmission gear (33) is fixedly sleeved on one end of the shaft body of the support shaft (21); a transmission rod (19) is fixedly sleeved on the other end of the shaft body of the support shaft (21); a connecting rod (22) is hingedly connected to one end of the transmission rod (19); one end of the connecting rod (22) is hingedly connected to the moving rod (23); a rack (32) is fixedly connected to the bottom of the connecting rod (10); the rack (32) and the transmission gear (33) are meshed with each other.

3. A flood prevention box for water conservancy projects according to claim 1, characterized in that: A fixing rod (8) is fixedly connected to one side of the box body (1), and a baffle (4) for limiting the sliding range of the extension plate (3) is fixedly connected to one side of the fixing rod (8).

4. A flood prevention box for water conservancy projects according to claim 1, characterized in that: The bottom of the box body (1) is provided with a soil nail (12) for fixing the box body (1), and a stop nail (17) is fixedly provided at the bottom of the outer side of the soil nail (12), and the stop nail (17) is arranged obliquely and the number is set to at least one, and the bottom of the box body (1) is fixedly connected to a blocking cover (16), and the blocking cover (16) is slidably sleeved with the soil nail (12), and the top of the soil nail (12) is fixedly connected to a spring seat (11), and the bottom of the spring seat (11) is fixedly connected to a No. 1 spring (13), and the bottom of the box body (1) is provided with a positioning hole (18) for the soil nail (12) to extend.

5. A flood prevention box for water conservancy projects according to claim 1, characterized in that: A connecting groove (9) is provided on the water-blocking side of the convex plate (2), and two movable plates (7) for respectively compressing two No. 1 sealing airbags (5) are slidably sleeved inside the convex plate (2), and one side of the movable plate (7) is connected to the cavity of the connecting groove (9).

6. A flood prevention box for water conservancy projects according to claim 1, characterized in that: A ventilation pipe (35) is fixedly provided at the front end of the box body (1), the second air pipe (37) is in communication with the ventilation pipe (35), and a second air valve (36) is fixedly provided at one end of the ventilation pipe (35).

7. A flood prevention box for water conservancy projects according to claim 1, characterized in that: A No. 2 spring (15) is fixedly connected to the bottom of the support plate (14), and a box cover (20) is provided on the top of the box body (1).

Images