A kind of anti-leakage drainage mechanism for building expansion joint

Abstract

The present invention discloses a leakage prevention and drainage mechanism for building expansion joints, which relates to the technical field of expansion joint waterproofing, and comprises two floor slabs and a water stop, wherein an expansion joint is arranged between the two floor slabs, a water stop is arranged between the two floor slabs on the expansion joint, a waterproof cover plate is arranged above the water stop, a flow guide fixing device is arranged below the floor slab, a suspension moving device is arranged below the floor slab, an alarm waterproof device is arranged below the suspension moving device, a plurality of collecting buckets are arranged below the alarm waterproof device, a drainage branch pipe is fixedly arranged at the discharge port of the collecting bucket, a collecting pipe is fixedly arranged at the discharge port of the drainage branch pipe, and a drainage main pipe is fixedly arranged on the collecting pipe. The present invention performs the first waterproofing of the expansion joint through the water stop, the flow guide fixing device performs the diversion and guiding function on the leaking rainwater, and the alarm waterproof device performs the functions of collecting and alarming.

Description

Technical Field

[0001] The invention relates to the technical field of expansion joint waterproofing, in particular to an anti-leakage and drainage mechanism for a building expansion joint. Background Art

[0002] Expansion joints are a common design in building structures, used to cope with the expansion and contraction of buildings caused by temperature changes, earthquakes and other factors. In order to ensure that the building is not damaged by water during the expansion and contraction process, the expansion joints need to be waterproofed. Common waterproof materials include elastic materials such as rubber, polyurethane, and silicone. These materials have good weather resistance and corrosion resistance and can effectively resist water erosion.

[0003] There are two main ways to waterproof vertical expansion joints: waterproof glue and waterproof tape. However, relying on only one of the two cannot fully achieve the waterproof effect. After a certain period of time, the rubber or waterproof glue will age and leakage will inevitably occur. The initial leakage is small and difficult to find. When leakage is found, the waterproofing has been damaged for a long time and needs to be replaced as a whole. It is also necessary to repair adverse factors such as damage caused by leakage, which leads to higher maintenance costs.

[0004] In order to extend the service life of waterproof facilities, existing waterproof measures include the use of metal plates for waterproofing. The utility model with authorization announcement number CN212001652U discloses a building expansion joint anti-leakage drainage device, which waterproofs the expansion joint through aluminum strips, and collects the leaking water in a collection box to facilitate the discharge of water to the outside. The structure is simple, but the aluminum strips are rigidly connected to the structural beams or floor slabs through steel nails and other components. When the expansion joint is deformed due to factors such as temperature changes, the metal plate will be stretched or compressed, causing the metal plate to deform and causing the waterproof structure to be damaged. When the waterproofing is damaged, there is no alarm device and it is impossible to remind maintenance. When leakage is often found, the expansion joint waterproofing measures are already seriously damaged. Therefore, a multiple waterproof and alarm function expansion joint anti-leakage drainage device is needed. Summary of the invention

[0005] The object of the present invention is to provide a building expansion joint anti-leakage drainage mechanism to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A building expansion joint anti-leakage drainage mechanism comprises two floor slabs and a water stop, an expansion joint is arranged between the two floor slabs, a water stop is arranged between the two floor slabs and on the expansion joint, a waterproof cover plate is arranged above the water stop, a flow guide fixing device is arranged below the floor slab, a suspension moving device is arranged below the floor slab, an alarm waterproof device is arranged below the suspension moving device, a plurality of collecting buckets are arranged below the alarm waterproof device, a drainage branch pipe is fixedly arranged at the discharge port of the collecting bucket, a collecting pipe is fixedly arranged at the discharge port of the drainage branch pipe, and a drainage main pipe is fixedly arranged on the collecting pipe;

[0008] The alarm waterproof device comprises two groups of first waterproof plates and second waterproof plates which are arranged opposite to each other up and down, the inner ends of the first waterproof plates and the second waterproof plates are connected by a collecting groove, a guide dome is arranged between the collecting grooves, a water flow space is formed between adjacent guide domes, the discharge port of the water flow space is fixedly connected to the collecting bucket, the outer ends of the first waterproof plates and the second waterproof plates are connected by a shell, a plurality of reed pieces are embedded in the outer wall of the shell, a plurality of groups of first guide plates and second guide plates which cooperate with the water flow space and are arranged in a V shape are fixedly arranged on the upper surface of the first waterproof plate, the lower ends of the first guide plates and the second guide plates are respectively connected to the two ends of the water flow space, a second arc plate is relatively fixedly arranged in the water flow space, and a one-way valve is fixedly installed at the corresponding position of the side wall of the collecting groove and the second arc plate.

[0009] As a further solution of the present invention: a plurality of water holes are provided at the bottom of the first guide plate and the second guide plate.

[0010] As a further solution of the present invention: a limiting groove is provided in the middle of the first guide plate and the second guide plate, and an arc-shaped filter screen is inserted into the limiting groove.

[0011] As a further solution of the present invention: the suspended moving device includes a base plate, which is connected to the floor slab by hanging wires, and a plurality of limiting holes are opened on the base plate. A connecting column is slidably arranged in the limiting hole, a circular plate is fixedly arranged at one end of the connecting column, and the other end of the connecting column is fixedly connected to the alarm waterproof device, and a plurality of balls are embedded in the lower end surface of the circular plate.

[0012] As a further solution of the present invention: the inner diameter of the limiting hole is larger than the outer diameter of the connecting column.

[0013] As a further solution of the present invention: a diversion fixing device is arranged under the floor, and the diversion fixing device includes a first curved plate, the first curved plate is fixedly connected to the side wall of the floor by rivets, the lower end surface of the floor is fixedly connected to the inner wall of the first curved plate by a vertical fixing rod, and the lower end surface of the floor is fixedly connected to the inner wall of the first curved plate by an oblique fixing rod.

[0014] As a further solution of the present invention: the upper end of the first arc plate has a first guide portion, and the lower end of the first arc plate is provided with a first drip groove.

[0015] As a further solution of the present invention: an end beam is provided at the end of the floor slab at the expansion joint, and a flow guide clamping device is provided on the end beam.

[0016] As a further solution of the present invention: the guide clamping device includes a third arc plate and a C-shaped fixed block, the upper end of the third arc plate has a second guide portion, the lower end of the third arc plate is provided with a second drip groove, the inner wall of the C-shaped fixed block is evenly provided with a plurality of telescopic rods, the outer end of the telescopic rod is fixedly provided with a rubber gasket, and the outer side of the telescopic rod is provided with a spring.

[0017] As a further solution of the present invention: a support plate is fixedly provided on the inner side of the shell below the guide clamping device.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The expansion joint is waterproofed by the water stop strip, the diversion fixture guides the leaking rainwater, and the alarm waterproof device collects and alarms the leaking rainwater, which is helpful to remind the maintenance personnel to repair the expansion joint.

[0020] The ball bearing allows the circular plate to move freely on the upper surface of the base plate, so that the alarm waterproof device can move freely within a certain range, preventing the alarm waterproof device from deforming due to thermal expansion and contraction of the expansion joint, thereby reducing the service life of the device. The ball bearing reduces the friction resistance between the base plate and the circular plate, and improves the adjustment ability of the suspension mobile device;

[0021] The water and impurities leaking from the water stop belt are filtered through the arc filter, and the leaking water is guided to the water flow space through the guide dome, the first guide plate and the second guide plate. The second arc plate collects the water leaking from the water flow space to facilitate the collection work of the collection bucket. At the same time, using the Bernoulli principle, the faster the flow rate, the smaller the pressure generated by the fluid, and the slower the flow rate, the greater the pressure generated by the fluid. The liquid flow rate at the outlet of the second arc plate is fast, so that the outside air is collected into the water flow space through the reed and the one-way valve, causing the reed to vibrate, and then a water leakage warning is issued, prompting the maintenance personnel to repair the expansion joint waterproofing, and the first guide plate and the second guide plate play a skeleton support role for the first waterproof plate to prevent the first waterproof plate from deformation;

[0022] The first guide part plays a preliminary role in guiding water, and the first drip groove can guide the leaked water to the alarm waterproof device to ensure that the leaked water can be effectively discharged. The vertical fixing rod plays a vertical supporting role for the first arc plate. The first arc plate, the oblique fixing rod and the vertical fixing rod form a triangular whole, which improves the stability of the guide fixing device and enhances the lateral supporting role of the guide fixing device.

[0023] The second guide part plays a preliminary role in diversion, and the second drip groove can divert the leaked water to the alarm waterproof device to ensure that the leaked water can be effectively discharged. The telescopic rod, spring and rubber gasket cooperate to clamp and fix the end beam, and there is no need to punch and fix the end beam, which reduces damage to the end beam, makes the diversion clamping device reusable, and improves the application scope of the diversion clamping device. The support plate prevents the diversion clamping device from falling, and the support plate assists the diversion clamping device in the vertical direction to improve the stability of the clamping of the diversion clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of Example 1 of the present invention.

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of Example 1 of the present invention.

[0027] Figure 4 It is a schematic diagram of the local three-dimensional structure of the flow guide fixing device in Example 1 of the present invention.

[0028] Figure 5 It is a schematic diagram of the local three-dimensional structure of the suspension moving device in Example 1 of the present invention.

[0029] Figure 6 This is an exploded view of the suspended moving device in Example 1 of the present invention.

[0030] Figure 7 It is a schematic diagram of the local three-dimensional structure of the alarm waterproof device in Example 1 of the present invention.

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the end portion of Example 1 of the present invention.

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0033] Fig.10 This is a schematic diagram of the cross-sectional structure of Example 2 of the present invention.

[0034] Fig.11It is a schematic cross-sectional structure diagram of embodiment 2 of the present invention.

[0035] Fig.12 It is a schematic diagram of the local three-dimensional structure at the end beam in Example 2 of the present invention.

[0036] Fig.13 It is a schematic diagram of the local three-dimensional structure of the guide clamping device in Example 2 of the present invention.

[0037] Fig.14 It is a schematic diagram of the local three-dimensional structure of the alarm waterproof device in Example 2 of the present invention.

[0038] Notes on reference numerals: 1. floor; 2. water stop; 21. waterproof cover; 3. suspension moving device; 31. base plate; 32. limit hole; 33. hanging wire; 34. round plate; 35. connecting column; 36. ball; 4. alarm waterproof device; 401. first waterproof plate; 402. second waterproof plate; 403. collecting groove; 404. guide dome; 405. first guide plate; 406. second guide plate; 407. limit groove; 408. water hole; 409. reed; 410. shell; 411. second arc plate; 412. one-way valve; 413 , water flow space; 414, support plate; 5, diversion fixing device; 51, first arc-shaped plate; 52, oblique fixing rod; 53, vertical fixing rod; 54, first drip trough; 55, first diversion part; 6, collecting bucket; 7, drainage branch pipe; 8, collecting pipe; 9, drainage main pipe; 10, arc-shaped filter screen; 11, end beam; 12, diversion clamping device; 1201, third arc-shaped plate; 1202, C-shaped fixing block; 1203, telescopic rod; 1204, spring; 1205, rubber gasket; 1206, second drip trough; 1207, second diversion part. DETAILED DESCRIPTION

[0039] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component may be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention. Example

[0040] See also Figures 1 to 8In an embodiment of the present invention, a building expansion joint anti-leakage drainage mechanism includes two floor slabs 1 and a water stop 2, an expansion joint is arranged between the two floor slabs 1, a water stop 2 is arranged on the expansion joint between the two floor slabs 1, a waterproof cover plate 21 is arranged above the water stop 2, and the arrangement of the water stop 2 and the waterproof cover plate 21 adopts the existing design and is not described in detail; a diversion fixing device 5 is arranged below the floor slab 1, a suspension moving device 3 is arranged below the floor slab 1, an alarm waterproof device 4 is arranged below the suspension moving device 3, and a plurality of collecting buckets 6 are arranged below the alarm waterproof device 4, a drainage branch pipe 7 is fixedly arranged at the discharge port of the collecting bucket 6, a collecting pipe 8 is fixedly arranged at the discharge port of the drainage branch pipe 7, and a drainage main pipe 9 is fixedly arranged on the collecting pipe 8, and the direction of the drainage main pipe 9 changes flexibly with the position of the expansion joint, and the expansion joint is waterproofed for the first time through the water stop 2, the diversion fixing device 5 diverts and guides the leaked rainwater, and the alarm waterproof device 4 plays the role of collecting and alarming, which is conducive to prompting maintenance personnel to repair the expansion joint.

[0041] The suspension moving device 3 includes a base plate 31, which is connected to the floor 1 by a hanging wire 33. A plurality of limiting holes 32 are opened on the base plate 31, and a connecting column 35 is slidably arranged in the limiting hole 32. A circular plate 34 is fixedly arranged at one end of the connecting column 35, and the other end of the connecting column 35 is fixedly connected to the alarm waterproof device 4. The inner diameter of the limiting hole 32 is larger than the outer diameter of the connecting column 35. A plurality of balls 36 are embedded on the lower end surface of the circular plate 34. The circular plate 34 can move freely on the upper surface of the base plate 31 through the balls 36, so that the alarm waterproof device 4 can move freely within a certain range, thereby preventing the alarm waterproof device 4 from being deformed due to thermal expansion and contraction of the expansion joint, thereby reducing the service life of the device. The balls 36 reduce the friction resistance between the base plate 31 and the circular plate 34, thereby improving the adjustment ability of the suspension moving device 3.

[0042] The alarm waterproof device 4 includes two groups of first waterproof plates 401 and second waterproof plates 402 arranged opposite to each other in the upper and lower parts. The inner ends of the first waterproof plates 401 and the second waterproof plates 402 are connected through a collecting groove 403. A guide dome 404 is arranged between the collecting grooves 403. A water-passing space 413 is formed between adjacent guide domes 404. The discharge port of the water-passing space 413 is fixedly connected to the collecting bucket 6. The outer ends of the first waterproof plates 401 and the second waterproof plates 402 are connected through a shell 410. The outer wall of the shell 410 is embedded with a plurality of reeds 409. The upper surface of the first waterproof plate 401 is fixedly provided with a plurality of first guide plates 405 and second guide plates 406 which are matched with the water passing space 413 and arranged in a V shape. The lower ends of the first guide plates 405 and the second guide plates 406 are respectively connected to the two ends of the water passing space 413. The middle of the first guide plates 405 and the second guide plates 406 is provided with a limiting groove 407, and the limiting groove 407 is inserted with an arc filter 10. The bottom of the first guide plates 405 and the second guide plates 406 is provided with a plurality of water passing holes 408. 3, a second curved plate 411 is relatively fixedly arranged in the collecting groove 403, and a one-way valve 412 is fixedly installed at the side wall of the collecting groove 403 corresponding to the second curved plate 411. The water and impurities or other foreign impurities leaking from the water stop belt 2 are filtered through the curved filter screen 10, and the leaking water is guided to the water flow space 413 through the guide dome 404, the first guide plate 405 and the second guide plate 406. The second curved plate 411 collects the water leaking from the water flow space 413, which is convenient for the collection work of the collecting bucket 6, and at the same time, it is convenient for the collection bucket 6 to collect the water. According to Bernoulli's principle, the faster the flow rate, the smaller the pressure generated by the fluid, and the slower the flow rate, the greater the pressure generated by the fluid. The liquid flow rate at the outlet of the second arc plate 411 is fast, so that the outside air is gathered into the water flow space 413 through the reed 409 and the one-way valve 412, causing the reed 409 to vibrate, and then issue a water leakage warning, prompting maintenance personnel to repair the expansion joint waterproofing, and the first guide plate 405 and the second guide plate 406 play a skeletal support role for the first waterproof plate 401 to prevent the first waterproof plate 401 from deformation.

[0043] The diversion fixing device 5 includes a first curved plate 51, the upper end of the first curved plate 51 has a first diversion portion 55, the lower end of the first curved plate 51 is provided with a first drip groove 54, the first curved plate 51 is fixedly connected to the side wall of the floor 1 by rivets, the lower end surface of the floor 1 is fixedly connected to the inner wall of the first curved plate 51 by a vertical fixing rod 53, and the lower end surface of the floor 1 is fixedly connected to the inner wall of the first curved plate 51 by an oblique fixing rod 52. The first diversion portion 55 plays a role of preliminary diversion, and the first drip groove 54 can divert the leaked water to the alarm waterproof device 4 to ensure that the leaked water can be effectively discharged. The vertical fixing rod 53 plays a vertical supporting role for the first curved plate 51. The first curved plate 51, the oblique fixing rod 52 and the vertical fixing rod 53 form a triangular whole, which improves the stability of the diversion fixing device 5 and enhances the lateral supporting effect of the diversion fixing device 5.

[0044] During specific use, the waterstop 2 and the waterproof cover plate 21 cooperate to play the first waterproof role. When the waterstop 2 is slightly damaged, there is less water leakage at the waterstop 2, and the leaking water gathers in the middle of the arc of the waterstop 2, and then drips directly onto the arc filter 10, and then falls into the water flow space 413. Since the leaking water is small and a stable fluid cannot be formed, the outside air flows through the reed 409 and the one-way valve 412 at a slow flow rate, the reed 409 does not make a sound, and the leaking water is directly discharged to the outside through the drainage branch pipe 7, the collecting pipe 8 and the drainage main pipe 9 When the water stop 2 is seriously damaged, the main leakage water drips directly to the arc filter 10 through the lowest point of the water stop 2, and a small amount of local leakage water is guided to the arc filter 10 through the first arc plate 51. The arc filter 10 filters the leakage water, and the filtered leakage water forms a stable fluid in the water flow space 413, so that the flow rate of the outside air through the reed 409 and the one-way valve 412 is faster, causing the reed 409 to sound an alarm, indicating that the water stop 2 is seriously damaged. At this time, the waterproof device still has the first waterproof The two waterproof plates 401 and the second waterproof plate 402 are waterproof, and no leakage water will leak out; when the water stop belt 2 is seriously damaged and the first waterproof plate 401 is slightly damaged, the main leakage water will directly drip to the arc filter screen 10 through the lowest point of the water stop belt 2, and a small amount of local leakage water will be guided to the arc filter screen 10 through the first arc plate 51, and the arc filter screen 10 will filter the leakage water. The filtered leakage water will be retained on the first waterproof plate 401, and a small amount of leakage water will drip directly to the arc filter screen 10 through the first waterproof plate 401. The water flows to the collecting tank 403 from the damaged part. The water retained in the collecting tank 403 will not cover the one-way valve 412 and will not affect the ventilation of the one-way valve 412. At this time, the fluid flow rate of the leaking water in the water flow space 413 is further accelerated, which makes the flow rate of the outside air flowing through the reed 409 and the one-way valve 412 further accelerated, causing the alarm sound of the reed 409 to become louder, allowing maintenance personnel to repair the expansion joint waterproofing in time. The second waterproof plate 402 plays the final protective role. At this time, the maintenance personnel need to replace the device. Example

[0045] See also Figures 9 to 14 , which is different from Example 1, an end beam 11 is provided at the end of the floor 1 at the expansion joint, and a flow guide clamping device 12 is provided on the end beam 11. The flow guide clamping device 12 includes a third arc plate 1201 and a C-shaped fixing block 1202. The upper end of the third arc plate 1201 has a second flow guide portion 1207, and the lower end of the third arc plate 1201 is provided with a second drip groove 1206. A plurality of telescopic rods 1203 are evenly provided on the inner wall of the C-shaped fixing block 1202. A rubber gasket 1205 is fixedly provided at the outer end of the telescopic rod 1203, and a spring 1204 is provided on the outer side of the telescopic rod 1203. A support plate 414 is fixedly provided on the inner side of the shell 410 below the flow guide clamping device 12. The second guide part 1207 plays a preliminary role in guiding the flow, and the second drip groove 1206 can guide the leaked water to the alarm waterproof device 4 to ensure that the leaked water can be effectively discharged. The telescopic rod 1203, the spring 1204 and the rubber gasket 1205 cooperate to clamp and fix the end beam 11. There is no need to punch and fix the end beam 11, which reduces the damage to the end beam 11, so that the guide clamping device 12 can be reused, and the application scope of the guide clamping device 12 is improved. The support plate 414 prevents the guide clamping device 12 from falling, and the support plate 414 assists the guide clamping device 12 in the vertical direction to improve the stability of the clamping of the guide clamping device 12.

[0046] When installing the device, install the water stop 2 between the end beams 11, then install the guide clamping device 12 on one side of the end beam 11, compress the telescopic rod 1203 and the spring 1204, so that the rubber gasket 1205 clamps the side wall of the end beam 11, and then fix the hanging wire 33 on the lower end surface of the floor slab 1, and then install the ball 36 on the lower end surface of the circular plate 34, and then install the circular plate 34, the connecting column 35 and the ball 36 on the upper side of the limit hole 32, and then connect the base plate 31 with the hanging wire 33. Fixedly connect, then fix the lower end of the connecting column 35 to the alarm waterproof device 4, install the first guide plate 405 and the second guide plate 406 on the first waterproof plate 401, install the reed 409 on the shell 410, install the one-way valve 412 on the side wall of the collecting tank 403, then install the collecting bucket 6 under the water flow space 413, install the drainage branch pipe 7 at the discharge port of the collecting bucket 6, then install several drainage branch pipes 7 on the collecting pipe 8, and finally connect to the drainage main pipe 9 to complete the installation.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A building expansion joint anti-leakage drainage mechanism, comprising two floor slabs (1) and a water stop strip (2), wherein an expansion joint is arranged between the two floor slabs (1), a water stop strip (2) is arranged between the two floor slabs (1) and on the expansion joint, and a waterproof cover plate (21) is arranged above the water stop strip (2), characterized in that: A suspension moving device (3) is arranged below the floor slab (1), an alarm waterproof device (4) is arranged below the suspension moving device (3), a plurality of collecting buckets (6) are arranged below the alarm waterproof device (4), a drainage branch pipe (7) is fixedly arranged at the discharge port of the collecting bucket (6), a collecting pipe (8) is fixedly arranged at the discharge port of the drainage branch pipe (7), and a drainage main pipe (9) is fixedly arranged on the collecting pipe (8); The alarm waterproof device (4) comprises two groups of first waterproof plates (401) and second waterproof plates (402) arranged opposite to each other in the upper and lower parts, the inner ends of the first waterproof plates (401) and the second waterproof plates (402) are connected via a collecting groove (403), a guide dome (404) is arranged between the collecting grooves (403), a water flow space (413) is formed between adjacent guide domes (404), the discharge port of the water flow space (413) is fixedly connected to the collecting bucket (6), the outer ends of the first waterproof plates (401) and the second waterproof plates (402) are connected via a shell (410), and the A plurality of reeds (409) are embedded in the outer wall of the housing (410); a plurality of groups of first guide plates (405) and second guide plates (406) that cooperate with the water-passing space (413) and are arranged in a V shape are fixedly arranged on the upper surface of the first waterproof plate (401); the lower ends of the first guide plates (405) and the second guide plates (406) are respectively connected to the two ends of the water-passing space (413); a second arc plate (411) is relatively fixedly arranged in the water-passing space (413); and a one-way valve (412) is fixedly installed at a position corresponding to the side wall of the collecting tank (403) and the second arc plate (411).

2. The anti-leakage and drainage mechanism for building expansion joints according to claim 1 is characterized in that: A plurality of water holes (408) are provided at the bottom of the first guide plate (405) and the second guide plate (406).

3. The anti-leakage and drainage mechanism for building expansion joints according to claim 2 is characterized in that: A limiting groove (407) is provided in the middle of the first guide plate (405) and the second guide plate (406), and an arc-shaped filter screen (10) is inserted into the limiting groove (407).

4. The anti-leakage and drainage mechanism for building expansion joints according to claim 2, characterized in that: The suspended mobile device (3) comprises a base plate (31), the base plate (31) and the floor plate (1) are connected by a hanging wire (33), a plurality of limit holes (32) are provided on the base plate (31), a connecting column (35) is slidably arranged in the limit hole (32), a circular plate (34) is fixedly arranged at one end of the connecting column (35), the other end of the connecting column (35) is fixedly connected to the alarm waterproof device (4), and a plurality of balls (36) are embedded in the lower end surface of the circular plate (34).

5. The anti-leakage and drainage mechanism for building expansion joints according to claim 4 is characterized in that: The inner diameter of the limiting hole (32) is greater than the outer diameter of the connecting column (35).

6. The anti-leakage and drainage mechanism for building expansion joints according to claim 5, characterized in that: A flow guide fixing device (5) is provided below the floor slab (1), and the flow guide fixing device (5) comprises a first curved plate (51), the first curved plate (51) being fixedly connected to the side wall of the floor slab (1) by rivets, the lower end surface of the floor slab (1) being fixedly connected to the inner wall of the first curved plate (51) by vertical fixing rods (53), and the lower end surface of the floor slab (1) being fixedly connected to the inner wall of the first curved plate (51) by oblique fixing rods (52).

7. The anti-leakage and drainage mechanism for building expansion joints according to claim 6, characterized in that: The upper end of the first arc-shaped plate (51) is provided with a first guide portion (55), and the lower end of the first arc-shaped plate (51) is provided with a first drip groove (54).

8. The anti-leakage and drainage mechanism for building expansion joints according to any one of claims 1 to 5, characterized in that: An end beam (11) is provided at the end of the floor slab (1) at the expansion joint, and a flow guide clamping device (12) is provided on the end beam (11).

9. The anti-leakage and drainage mechanism for building expansion joints according to claim 8, characterized in that: The flow guide clamping device (12) comprises a third arc-shaped plate (1201) and a C-shaped fixing block (1202); the upper end of the third arc-shaped plate (1201) has a second flow guide portion (1207); the lower end of the third arc-shaped plate (1201) is provided with a second drip groove (1206); a plurality of telescopic rods (1203) are evenly arranged on the inner wall of the C-shaped fixing block (1202); a rubber gasket (1205) is fixedly arranged on the outer end of the telescopic rod (1203); and a spring (1204) is arranged on the outer side of the telescopic rod (1203).

10. The anti-leakage and drainage mechanism for building expansion joints according to claim 8, characterized in that: A support plate (414) is fixedly arranged on the inner side of the shell (410) below the flow guide clamping device (12).

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