A building eaves drainage structure

Abstract

The present invention relates to the technical field of drainage devices, and specifically to a drainage structure for a building eaves, the present invention comprises an eaves gutter, which is provided with a drainage hole; an overflow hole is provided on the end surface of the eaves gutter close to the drainage hole, a driving component is fixedly connected between the water outlet end of the overflow hole and a connecting pipe, the driving component comprises a hollow column, and the bottom of the hollow column and the connecting pipe are connected; a blocking mechanism is fixedly installed on the inner wall of the drainage hole, the blocking mechanism comprises a plurality of knife holder components fixedly installed on the inner wall of the drainage hole; a lifting mechanism is installed in the connecting pipe, the lifting mechanism comprises a lifting component, the lower part of the lifting component is transmission-connected with a transmission component, and the transmission component is also transmission-connected with the driving component; the present invention can automatically lift and clear the drainage hole by using rainwater when blockage occurs through the coordinated arrangement of the blocking mechanism, the lifting mechanism and the driving component, so as to effectively prevent the blockage of the drainage hole.

Description

Technical Field

[0001] The invention relates to the technical field of drainage devices, in particular to a building eaves drainage structure. Background Art

[0002] The eaves of a building refer to the protruding part of the edge of the roof of a building. It is usually located at the junction of the roof and the wall. It is used to guide rainwater to drain outwards, prevent rainwater from dripping directly onto the wall, prevent rainwater from leaking along the wall, and reduce damage to the building structure. Reasonable design of building eaves and drainage systems is crucial to protecting the building structure and controlling long-term maintenance costs.

[0003] Existing eaves drainage structures usually include gutters installed on the eaves, with a through drain pipe connected to the bottom of the gutter; in rainy weather, rainwater from the roof flows into the gutter and then enters the drain pipe through the drain port, thereby realizing the eaves drainage function; in order to prevent the drain port from being blocked by garbage such as fallen leaves during long-term use, a filter cover is often installed on the drain port.

[0004] Setting up a filter cover at the drain outlet of the gutter to prevent blockage is certainly an effective measure, but in actual use there are the following shortcomings:

[0005] The filter cover only has a filtering function, and impurities will still accumulate in the gutter, especially in the autumn leaf-falling season. The fallen leaves in the gutter are easily accumulated on the outside of the filter cover with the water flow, which will cause blockage of the filter cover, thereby affecting the smoothness of water flow into the drain pipe. When the rainfall is heavy, there is a risk of gutter overflow. Summary of the invention

[0006] The object of the present invention is to provide a building eaves drainage structure to solve the problems raised in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A building eaves drainage structure, comprising an eaves gutter, wherein a drainage hole is provided on the bottom surface of the eaves gutter at a position close to one end, a connecting pipe is fixedly connected to the bottom end of the drainage hole, and a drainage pipe is fixedly connected to the bottom end of the connecting pipe through a pipe connector; three overflow holes are provided on the end surface of the eaves gutter close to the drainage hole at a position close to the top, and the heights of the three overflow holes are distributed in a gradient manner, an L-shaped filter plate for covering the three overflow holes is fixedly installed at one end of the eaves gutter close to the overflow hole, a driving assembly is fixedly connected between the water outlet ends of the three overflow holes and the connecting pipe, and the driving assembly comprises a hollow column, a conduit for connecting the hollow column and the connecting pipe is fixedly connected between the bottom position of the hollow column and the bottom position of the connecting pipe, and the inner diameter of the conduit is equal to the inner diameter of the overflow hole;

[0009] A blocking mechanism is fixedly installed on the inner wall of the drainage hole, and the blocking mechanism includes a plurality of knife seat assemblies fixedly installed on the inner wall of the drainage hole, and the plurality of knife seat assemblies are distributed in a circumferential array about the axis of the drainage hole;

[0010] A lifting mechanism is installed in the connecting pipe, and the lifting mechanism includes a lifting assembly fixedly connected to the inner wall of the connecting pipe. The lower part of the lifting assembly is connected to a transmission assembly. The end of the transmission assembly away from the lifting assembly passes through the conduit from the connecting pipe to the hollow column and is then connected to the driving assembly.

[0011] Furthermore, the knife seat assembly includes a U-shaped seat, the closed end of the U-shaped seat is fixedly connected to the inner wall of the drainage hole, and elastic telescopic support rods are fixedly connected to the two inner side surfaces of the U-shaped seat at positions close to both ends, and the telescopic ends of the two elastic telescopic support rods on the same side are fixedly connected to the knife sharpening strips;

[0012] Under the elastic force of the elastic telescopic support rods on both sides, the two sharpening strips are squeezed and contacted with each other;

[0013] The opposite sides of the two sharpening strips are provided with inclined surfaces at the top and bottom ends.

[0014] Further, the lifting assembly includes a sliding rod coaxially arranged in the connecting tube, a limiting ring is provided on the outer sliding sleeve of the sliding rod, a connecting rod is fixedly connected between the outer periphery of the limiting ring and the inner wall of the connecting tube, two limiting sliding grooves are provided on the outer periphery of the sliding rod, two protrusions are fixedly connected on the inner wall of the limiting ring, and the ends of the two protrusions away from the inner wall of the limiting ring are respectively slidably clamped in the two limiting sliding grooves;

[0015] A lifting piece used in conjunction with a plurality of groups of sharpening strips is fixedly mounted on the top of the slide bar;

[0016] The periphery of the slide rod is rotatably connected with a clamping column at a position close to the bottom end.

[0017] Further, the lifting member includes a mounting plate fixedly mounted on the top end of the slide rod, the periphery of the mounting plate is fixedly connected with a number of cutting tools equal to the number of the plurality of tool holder assemblies, the plurality of cutting tools are arranged in a circumferential array about the axis of the mounting plate, and the plurality of cutting tools are respectively aligned with the plurality of tool holder assemblies;

[0018] The cross section of the tool is rhombus-shaped, forming a double-edged structure used in conjunction with the bevel.

[0019] Furthermore, the transmission assembly includes a lifting assembly fixedly installed at the lower position of the inner wall of the connecting pipe, and the lifting assembly is transmission-connected to a rotating assembly located between the bottom of the sliding rod and the conduit.

[0020] Furthermore, the lifting assembly includes a mounting plate fixedly mounted on the inner wall of the connecting pipe, a driving column is rotatably mounted on the top surface of the mounting plate, a driving groove is provided on the periphery of the driving column, the driving groove is elliptical, and one end of the clamping column away from the slide rod is slidably clamped in the driving groove;

[0021] The bottom end of the driving column is fixedly connected with a connecting shaft, and the bottom end of the connecting shaft rotates through the mounting plate to the bottom of the mounting plate and then is fixedly installed with a bevel gear 1.

[0022] Further, the rotating assembly includes a mounting tube and a rotating shaft, the mounting tube is fixedly mounted on the periphery of the connecting tube, the rotating shaft is rotatably mounted between the inner walls of the connecting tube, the rotating shaft is coaxial with the mounting tube, and the rotating shaft is parallel to the conduit, one end of the rotating shaft away from the hollow column rotates through the connecting tube to the mounting tube, and a torsion spring is installed between one end of the rotating shaft located in the mounting tube and the inner wall of the mounting tube;

[0023] A bevel gear 2 meshing with the bevel gear 1 is fixedly installed on the periphery of the rotating shaft, and a winding wheel is fixedly installed on the periphery of the rotating shaft near the catheter. A transmission line is wound around the winding wheel, and the free end of the transmission line passes through the catheter to the hollow column.

[0024] Furthermore, three overflow pipes are fixedly connected to the top of the hollow column, and one end of the three overflow pipes away from the hollow column is fixedly connected to the water outlet ends of the three overflow holes respectively;

[0025] Two limiting columns are fixedly connected between the top and bottom ends of the hollow column, a floating body is slidably installed on the two limiting columns, and a retaining ring located below the floating body is fixedly installed on the periphery of the limiting column near the bottom;

[0026] One end of the transmission line located in the hollow column is fixedly connected to the bottom surface of the floating body.

[0027] Furthermore, a guide wheel 1 for guiding the transmission line is fixedly installed on the inner wall of the connecting pipe, and a guide wheel 2 for guiding the transmission line is fixedly installed on the inner bottom surface of the hollow column.

[0028] Furthermore, an inclined baffle is fixedly installed in the connecting pipe, the baffle is an arc-shaped structure, the baffle is located above the driving column, and the sliding rod and the baffle are connected in a through-type sliding manner;

[0029] A bypass port is provided on the inner wall of the connecting pipe at the lower end close to the baffle, and the bypass port is coaxial with the baffle and has the same diameter;

[0030] The bypass port is fixedly connected with a bypass pipe, and one end of the bypass pipe away from the connecting pipe is fixedly connected with the drain pipe in a through-type manner.

[0031] Beneficial effects of the present invention:

[0032] 1. The present invention can automatically lift and dredge the drainage hole by using rainwater when blockage occurs through the coordinated arrangement of the gutter, drainage hole, connecting pipe, overflow hole, blocking mechanism, lifting mechanism and driving assembly, thereby effectively preventing blockage of the drainage hole and reducing the frequency of manual regular maintenance and cleaning. The workload of maintenance personnel will be greatly reduced, thereby saving manpower and time costs.

[0033] 2. During the lifting and lowering of the slide bar, the mounting plate drives multiple cutters to lift the fallen leaves. While realizing the dredging function, the larger fallen leaves can be cut off in the process of the cutter descending through the two sharpening strips in the cutter holder assembly. The reciprocating lifting and lowering of the cutter can perform a reciprocating cutting action, thereby cutting the larger fallen leaves into smaller ones, until they reach a reasonable size and are smoothly discharged from the gutter through the connecting pipe. This arrangement can lift and dredge the drainage hole while cutting off the fallen leaves, effectively reducing the risk of blockage in the connecting pipe and further improving the anti-blocking performance of the present invention.

[0034] 3. When the tool passes between the two sharpening strips, under the elastic support of the elastic telescopic support rod, the two sharpening strips and the tool are in an extruded sliding contact state, which can cut the tool and sharpen the tool at the same time, thereby maintaining the sharpness of the tool and ensuring the cutting effect.

[0035] 4. The present invention, through the provision of a baffle and a bypass port, can guide rainwater entering the connecting pipe through the drainage hole into the drainage pipe through the bypass port, thereby preventing rainwater from contacting the components of the transmission assembly in the connecting pipe, preventing rainwater from corroding the components, and also preventing blockage in the pipe caused by the components, thereby extending the service life of the present invention and reducing the risk of blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the connecting pipe and the mounting cylinder in the present invention;

[0039] Figure 3 It is a structural schematic diagram of the connection relationship between the limit ring and the slide rod in the present invention;

[0040] Figure 4 yes Figure 2 A magnified view of part A;

[0041] Figure 5 yes Figure 2 A magnified view of part B;

[0042] Figure 6 yes Figure 2 A three-dimensional schematic diagram from another angle;

[0043] Figure 7 yes Figure 6 Enlarged view of part C;

[0044] Figure 8 It is a three-dimensional schematic diagram of the connection relationship between the knife seat assembly and the drainage hole in the present invention;

[0045] Fig. 9 yes Figure 8 A magnified view of part D in the middle;

[0046] Fig.10 It is a structural schematic diagram of the knife holder assembly in the present invention;

[0047] Fig.11 It is a three-dimensional schematic diagram of the connection relationship between the driving column and the clamping column in the present invention;

[0048] Fig.12 It is a structural schematic diagram of the installation relationship between the L-shaped filter plate and the gutter in the present invention;

[0049] Fig.13 It is a structural schematic diagram of the connection relationship between the bypass pipe, the connecting pipe and the drain pipe in the present invention;

[0050] The reference numerals in the figures are as follows:

[0051] 1-gutter, 2-connecting pipe, 3-drain pipe, 4-pipe connector, 5-installation tube, 6-hollow column, 7-drain hole, 8-overflow hole, 9-overflow pipe, 10-conduit, 11-connecting rod, 12-limiting ring, 13-sliding rod, 14-driving column, 15-installation plate, 16-rotating shaft, 17-limiting column, 18-floating body, 19-blocking ring, 20-card column, 21-connecting shaft, 22-cone Gear 1, 23-bevel gear 2, 24-winding wheel, 25-transmission line, 26-guide wheel 1, 27-guide wheel 2, 28-mounting plate, 29-tool, 30-tool seat assembly, 31-U-shaped seat, 32-elastic telescopic support rod, 33-sharpening strip, 34-inclined surface, 35-limiting slide groove, 36-bump, 37-bypass pipe, 38-baffle, 39-drive groove, 40-L-shaped filter plate. DETAILED DESCRIPTION

[0052] 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.

[0053] Embodiment 1:

[0054] See also Figures 1 to 12 In an embodiment of the present invention, a building eaves drainage structure includes an eaves gutter 1, a drainage hole 7 is opened on the bottom surface of the eaves gutter 1 at a position near one end, a connecting pipe 2 is fixedly connected to the bottom end of the drainage hole 7, and a drainage pipe 3 is fixedly connected to the bottom end of the connecting pipe 2 through a pipe connector 4; three overflow holes 8 are opened on the end surface of the eaves gutter 1 near the drainage hole 7 at a position near the top, and the heights of the three overflow holes 8 are distributed in a gradient manner, and an L-shaped filter plate 40 for covering the three overflow holes 8 is fixedly installed at one end of the eaves gutter 1 near the overflow hole 8, and the setting of the L-shaped filter plate 40 can prevent the overflow holes 8 from being blocked, thereby ensuring the sensitivity of the driving component to be triggered by rainwater; a driving component is fixedly connected between the water outlet ends of the three overflow holes 8 and the connecting pipe 2, and the driving component includes a hollow column 6, and a conduit 10 for connecting the hollow column 6 and the connecting pipe 2 is fixedly connected between the bottom position of the hollow column 6 and the bottom position of the connecting pipe 2, and the inner diameter of the conduit 10 is equal to the inner diameter of the overflow hole 8;

[0055] A blocking mechanism is fixedly installed on the inner wall of the drain hole 7, and the blocking mechanism includes a plurality of knife seat assemblies 30 fixedly installed on the inner wall of the drain hole 7, and the plurality of knife seat assemblies 30 are arranged in a circumferential array about the axis of the drain hole 7;

[0056] A jacking mechanism is installed in the connecting pipe 2, and the jacking mechanism includes a jacking assembly fixedly connected to the inner wall of the connecting pipe 2. The lower part of the jacking assembly is connected to a transmission assembly. The end of the transmission assembly away from the jacking assembly passes through the conduit 10 from the connecting pipe 2 to the hollow column 6 and is then connected to the drive assembly.

[0057] When the drainage hole 7 is blocked by fallen leaves, resulting in poor drainage, the liquid level in the gutter 1 gradually rises, and the rainwater will enter the hollow column 6 through the overflow hole 8. When the water inflow speed into the hollow column 6 is lower than the water outflow speed of the conduit 10, the water in the gutter 1 is discharged to the drain pipe 3 through the drainage hole 7 and the hollow column 6, thereby preventing rainwater from overflowing from the gutter 1. When the water inflow speed of the hollow column 6 is higher than the water outflow speed of the conduit 10, rainwater will accumulate in the hollow column 6, triggering the driving component during the process. The driving component then drives the lifting component to lift the drainage hole 7 through the transmission component, thereby automatically achieving the purpose of unblocking the drainage hole 7, and ensuring the stability of the overall drainage process.

[0058] The knife seat assembly 30 includes a U-shaped seat 31, the closed end of the U-shaped seat 31 is fixedly connected to the inner wall of the drain hole 7, and elastic telescopic support rods 32 are fixedly connected to the two inner side surfaces of the U-shaped seat 31 at positions close to both ends, and the telescopic ends of the two elastic telescopic support rods 32 on the same side are fixedly connected to the sharpening strips 33;

[0059] Under the elastic force of the elastic telescopic support rods 32 on both sides, the two sharpening strips 33 are squeezed and contacted with each other;

[0060] The two opposite sides of the sharpening strips 33 are provided with inclined surfaces 34 at the top and bottom ends.

[0061] The lifting assembly includes a slide rod 13 coaxially arranged in the connecting tube 2, a limiting ring 12 is provided on the outer sliding sleeve of the slide rod 13, a connecting rod 11 is fixedly connected between the outer periphery of the limiting ring 12 and the inner wall of the connecting tube 2, two limiting sliding grooves 35 are provided on the outer periphery of the slide rod 13, two protrusions 36 are fixedly connected to the inner wall of the limiting ring 12, and the ends of the two protrusions 36 away from the inner wall of the limiting ring 12 are respectively slidably clamped in the two limiting sliding grooves 35;

[0062] A lifting member for use with multiple groups of sharpening strips 33 is fixedly installed on the top of the slide bar 13;

[0063] The outer periphery of the slide rod 13 is rotatably connected to a clamping column 20 near the bottom end.

[0064] The lifting member includes a mounting plate 28 fixedly mounted on the top of the slide rod 13, and the periphery of the mounting plate 28 is fixedly connected with a number of cutters 29 equal to the number of the multiple sets of cutter holder assemblies 30, and the multiple cutters 29 are arranged in a circumferential array about the axis of the mounting plate 28, and the multiple cutters 29 are respectively aligned with the multiple sets of cutter holder assemblies 30;

[0065] The cross section of the cutter 29 is rhombus-shaped, forming a double-edged structure used in conjunction with the inclined surface 34 .

[0066] The transmission assembly includes a lifting assembly fixedly installed at the lower position of the inner wall of the connecting pipe 2 , and the lifting assembly is transmission-connected to a rotating assembly located between the bottom of the sliding rod 13 and the conduit 10 .

[0067] The lifting assembly includes a mounting plate 15 fixedly mounted on the inner wall of the connecting pipe 2, a driving column 14 is rotatably mounted on the top surface of the mounting plate 15, a driving groove 39 is provided on the periphery of the driving column 14, the driving groove 39 is elliptical, and the end of the clamping column 20 away from the slide rod 13 is slidably clamped in the driving groove 39;

[0068] The bottom end of the driving column 14 is fixedly connected with a connecting shaft 21 . The bottom end of the connecting shaft 21 rotates through the mounting plate 15 and is fixedly mounted with a bevel gear 22 below the mounting plate 15 .

[0069] The rotating assembly includes a mounting tube 5 and a rotating shaft 16. The mounting tube 5 is fixedly mounted on the periphery of the connecting tube 2. The rotating shaft 16 is rotatably mounted between the inner walls of the connecting tube 2. The rotating shaft 16 is coaxial with the mounting tube 5 and parallel to the conduit 10. One end of the rotating shaft 16 away from the hollow column 6 rotates through the connecting tube 2 to the mounting tube 5. A torsion spring is installed between one end of the rotating shaft 16 located in the mounting tube 5 and the inner wall of the mounting tube 5.

[0070] A bevel gear 23 meshing with a bevel gear 1 22 is fixedly mounted on the periphery of the rotating shaft 16 , and a winding wheel 24 is fixedly mounted on the periphery of the rotating shaft 16 near the catheter 10 , a transmission line 25 is wound around the winding wheel 24 , and a free end of the transmission line 25 passes through the catheter 10 to the hollow column 6 .

[0071] Among them, three overflow pipes 9 are fixedly connected to the top of the hollow column 6, and the ends of the three overflow pipes 9 away from the hollow column 6 are fixedly connected to the water outlet ends of the three overflow holes 8 respectively;

[0072] Two limit columns 17 are fixedly connected between the top and bottom ends of the hollow column 6, a floating body 18 is slidably installed through the two limit columns 17, and a retaining ring 19 located below the floating body 18 is fixedly installed on the periphery of the limit column 17 near the bottom;

[0073] One end of the transmission line 25 located in the hollow column 6 is fixedly connected to the bottom surface of the floating body 18 .

[0074] The present invention is used in a specific manner:

[0075] The height positions of the three overflow holes 8 are distributed in a gradient manner, and the three overflow holes 8 from low to high are respectively a, b and c;

[0076] On the basis that the drainage hole 7 is blocked by fallen leaves and causes poor drainage (the water inflow speed in the gutter 1 is greater than the real-time drainage speed of the drainage hole 7 in the blocked state, and the water inflow speed in the gutter 1 is less than the maximum drainage speed of the drainage hole 7), two cases are discussed;

[0077] 1. When the liquid level in the gutter 1 rises to a and then stops rising, it means that the real-time drainage speed of the drainage hole 7 plus the drainage speed of a is equal to the water inflow speed in the gutter 1, and a stable drainage state can be maintained.

[0078] Second, when the liquid level in the gutter 1 continues to rise after reaching a, it means that the real-time drainage speed of the drainage hole 7 plus the drainage speed of the conduit 10 is less than the water inflow speed in the gutter 1, and water will gradually accumulate in the hollow column 6;

[0079] During the rising process of the liquid level in the hollow column 6, the float 18 floats vertically under the guidance of the limit column 17. The floating of the float 18 pulls up the transmission line 25, so that the winding wheel 24 drives the rotating shaft 16 to rotate. The rotation of the rotating shaft 16, on the one hand, makes the torsion spring in the mounting tube 5 store energy, and on the other hand, drives the driving column 14 to rotate through the bevel gear 23, the bevel gear 1 22 and the connecting shaft 21. The rotation of the driving column 14 drives the card column 20 to drive the slide bar 13 to reciprocate up and down through the driving groove 39. The up and down lifting movement of the slide bar 13 can loosen the fallen leaves accumulated at the drainage hole 7, thereby improving the real-time drainage speed of the drainage hole 7. At this time, the drainage hole 7 The drainage speed of the drain plus the drainage speed of the conduit 10 will be greater than the water inlet speed in the gutter 1, and the liquid level in the gutter 1 will drop. When the liquid level is in a state of not overflowing a, the water inlet speed in the hollow column 6 is less than the water outlet speed of the conduit 10, and the liquid level in the hollow column 6 gradually drops, and the float 18 drops accordingly. During the descent of the float 18, the stored energy of the torsion spring is gradually released, driving the rotating shaft 16 to rotate in the opposite direction, which can tighten and reel the transmission line 25, and drive the bevel gear 23 to rotate in the opposite direction, so that the driving column 14 rotates, that is, during the descent of the float 18, it will also drive the slide bar 13 to reciprocate and lift, thereby ensuring the dredging effect;

[0080] When the water surface in the gutter 1 overflows from b to c, it indicates that the water inflow speed in the gutter 1 is relatively high. At this time, the liquid level rising speed in the hollow column 6 will also accelerate, and the rotation speed of the driving column 14 will increase accordingly. Then, the reciprocating lifting action frequency of the slide rod 13 will increase, and the drainage hole 7 can be quickly unblocked, thereby improving the intelligence of the anti-blocking measures and having better anti-blocking performance.

[0081] Generally, the drainage holes 7 in the gutter 1 can smoothly discharge smaller fallen leaves, and as for larger fallen leaves, as long as the amount of fallen leaves is within a reasonable range, they can also be washed down with rainwater; however, in the autumn leaf-falling season, due to the large amount of fallen leaves, larger fallen leaves may accumulate in the connecting pipe 2, increasing the risk of blockage in the pipe;

[0082] In the present invention, the plurality of knife seat assemblies 30 distributed in a circumferential array in the drainage hole 7 form a filtering structure, which can allow leaves of a reasonable size to pass through and block leaves of larger size;

[0083] At the same time, during the lifting and lowering of the slide bar 13, the mounting plate 28 drives the multiple cutters 29 to lift the fallen leaves. While realizing the dredging function, the larger fallen leaves can be cut off during the process of the cutter 29 descending and passing through the two sharpening strips 33 in the cutter seat assembly 30. The reciprocating lifting and lowering of the cutter 29 can perform a reciprocating cutting action, so that the larger fallen leaves can be cut into smaller fallen leaves, until they reach a reasonable size and are smoothly discharged from the gutter 1 through the connecting pipe 2. Through this arrangement, the drainage hole 7 can be lifted and unblocked, and the fallen leaves can also be cut off, which effectively reduces the risk of blockage in the connecting pipe 2 and further improves the anti-blocking performance of the present invention.

[0084] Furthermore, when the cutter 29 passes between the two sharpening strips 33, under the elastic support of the elastic telescopic support rod 32, the two sharpening strips 33 and the cutter 29 are in an extruded sliding contact state, which can cut the cutter 29 while sharpening the cutter 29, thereby maintaining the sharpness of the cutter 29 and ensuring the cutting effect.

[0085] Therefore, in the present invention, through the coordinated arrangement of the gutter 1, the drainage hole 7, the connecting pipe 2, the overflow hole 8, the blocking mechanism, the lifting mechanism and the driving assembly, the drainage hole 7 can be automatically lifted and unblocked by rainwater when blockage occurs, thereby effectively preventing blockage of the drainage hole 7 and reducing the frequency of manual regular maintenance and cleaning. The workload of maintenance personnel will be greatly reduced, thereby saving manpower and time costs; and during the lifting process, the fallen leaves can be automatically cut off, thereby improving the discharge stability of the fallen leaves and reducing the risk of blockage in the pipe.

[0086] Embodiment 2:

[0087] See also Figure 5 On the basis of Example 1, a guide wheel 26 for guiding the transmission line 25 is fixedly installed on the inner wall of the connecting pipe 2, and a guide wheel 27 for guiding the transmission line 25 is fixedly installed on the inner bottom surface of the hollow column 6.

[0088] By setting the guide wheel 1 26 and the guide wheel 2 27, the transmission line 25 can be guided on the path passing through the catheter 10, avoiding the transmission line 25 from contacting the edge of the catheter 10, reducing the resistance of the transmission line 25 during movement, reducing the wear on the transmission line 25, and extending the service life of the transmission component.

[0089] Embodiment 3:

[0090] See also Fig.13 On the basis of Example 2, an inclined baffle 38 is fixedly installed in the connecting pipe 2, the baffle 38 is an arc-shaped structure, the baffle 38 is located above the driving column 14, and the sliding rod 13 and the baffle 38 are connected by a through-type sliding connection;

[0091] A bypass port is provided on the inner wall of the connecting pipe 2 at the lower end close to the baffle 38, and the bypass port is coaxial with the baffle 38 and has the same diameter;

[0092] The bypass port is fixedly connected with a bypass pipe 37 , and one end of the bypass pipe 37 away from the connecting pipe 2 is fixedly connected with the drain pipe 3 in a through-type manner.

[0093] By providing the baffle 38 and the bypass pipe 37, rainwater entering the connecting pipe 2 through the drainage hole 7 can be guided to the drainage pipe 3 through the bypass pipe 37, thereby preventing rainwater from contacting the components of the transmission assembly in the connecting pipe 2, preventing rainwater from corroding the components, and also preventing blockage in the pipe caused by the components, thereby extending the service life of the present invention and reducing the risk of blockage.

[0094] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A building eaves drainage structure, comprising an eaves gutter (1), wherein a drainage hole (7) is provided on the bottom surface of the eaves gutter (1) at a position close to one end, a connecting pipe (2) is fixedly connected to the bottom end of the drainage hole (7), and a drainage pipe (3) is fixedly connected to the bottom end of the connecting pipe (2) via a pipe connector (4); characterized in that: Three overflow holes (8) are provided on the end surface of the gutter (1) near the drainage hole (7) at a position near the top, and the heights of the three overflow holes (8) are distributed in a gradient manner. An L-shaped filter plate (40) is fixedly installed at one end of the gutter (1) near the overflow hole (8) to cover the three overflow holes (8). A driving assembly is fixedly connected between the water outlet ends of the three overflow holes (8) and the connecting pipe (2), and the driving assembly comprises a hollow column (6). A conduit (10) that penetrates the hollow column (6) and the connecting pipe (2) is fixedly connected between the bottom position of the hollow column (6) and the bottom position of the connecting pipe (2), and the inner diameter of the conduit (10) is equal to the inner diameter of the overflow hole (8); A blocking mechanism is fixedly mounted on the inner wall of the drainage hole (7), the blocking mechanism comprising a plurality of knife seat assemblies (30) fixedly mounted on the inner wall of the drainage hole (7), the plurality of knife seat assemblies (30) being arranged in an array circumferentially about the axis of the drainage hole (7); A lifting mechanism is installed in the connecting pipe (2), and the lifting mechanism comprises a lifting assembly fixedly connected to the inner wall of the connecting pipe (2), and the lower part of the lifting assembly is transmission-connected to a transmission assembly, and the end of the transmission assembly away from the lifting assembly passes through the conduit (10) from the connecting pipe (2) to the hollow column (6) and is transmission-connected to the drive assembly.

2. A building eaves drainage structure according to claim 1, characterized in that: The knife seat assembly (30) comprises a U-shaped seat (31), the closed end of the U-shaped seat (31) is fixedly connected to the inner wall of the drainage hole (7), and elastic telescopic support rods (32) are fixedly connected to the two inner side surfaces of the U-shaped seat (31) at positions close to both ends, and the telescopic ends of the two elastic telescopic support rods (32) on the same side are fixedly connected to the knife sharpening strips (33); Under the elastic force of the elastic telescopic support rods (32) on both sides, the two sharpening strips (33) are in squeeze contact with each other; The two opposite sides of the sharpening strips (33) are provided with inclined surfaces (34) at the top and bottom ends.

3. A building eaves drainage structure according to claim 2, characterized in that: The lifting assembly comprises a sliding rod (13) coaxially arranged in the connecting tube (2), a limiting ring (12) is provided on the outer sliding sleeve of the sliding rod (13), a connecting rod (11) is fixedly connected between the outer periphery of the limiting ring (12) and the inner wall of the connecting tube (2), two limiting sliding grooves (35) are provided on the outer periphery of the sliding rod (13), two protrusions (36) are fixedly connected to the inner wall of the limiting ring (12), and the ends of the two protrusions (36) away from the inner wall of the limiting ring (12) are respectively slidably clamped in the two limiting sliding grooves (35); A lifting piece for use with a plurality of groups of sharpening strips (33) is fixedly mounted on the top of the slide rod (13); The periphery of the sliding rod (13) is rotatably connected to a clamping column (20) at a position close to the bottom end.

4. A building eaves drainage structure according to claim 3, characterized in that: The lifting member comprises a mounting plate (28) fixedly mounted on the top end of the slide rod (13), the periphery of the mounting plate (28) being fixedly connected with a number of cutting tools (29) equal to the number of the plurality of cutting tool holder assemblies (30), the plurality of cutting tools (29) being arranged in a circumferential array about the axis of the mounting plate (28), and the plurality of cutting tools (29) being respectively aligned with the plurality of cutting tool holder assemblies (30); The cross section of the cutter (29) is rhombus-shaped, forming a double-edged structure used in conjunction with the inclined surface (34).

5. The building eaves drainage structure according to claim 3, characterized in that: The transmission assembly comprises a lifting assembly fixedly mounted at a lower position of the inner wall of the connecting pipe (2), and the lifting assembly is transmission-connected to a rotating assembly located between the bottom of the sliding rod (13) and the guide tube (10).

6. A building eaves drainage structure according to claim 5, characterized in that: The lifting assembly comprises a mounting plate (15) fixedly mounted on the inner wall of the connecting pipe (2); a driving column (14) is rotatably mounted on the top surface of the mounting plate (15); a driving groove (39) is provided on the periphery of the driving column (14); the driving groove (39) is elliptical; an end of the clamping column (20) away from the slide rod (13) is slidably clamped in the driving groove (39); The bottom end of the driving column (14) is fixedly connected to a connecting shaft (21), and the bottom end of the connecting shaft (21) rotates through the mounting plate (15) to the bottom of the mounting plate (15) and then fixedly mounted with a bevel gear 1 (22).

7. A building eaves drainage structure according to claim 6, characterized in that: The rotating assembly comprises a mounting cylinder (5) and a rotating shaft (16); the mounting cylinder (5) is fixedly mounted on the periphery of the connecting tube (2); the rotating shaft (16) is rotatably mounted between the inner walls of the connecting tube (2); the rotating shaft (16) is coaxial with the mounting cylinder (5), and the rotating shaft (16) is parallel to the guide tube (10); one end of the rotating shaft (16) away from the hollow column (6) rotates through the connecting tube (2) to the mounting cylinder (5); a torsion spring is mounted between one end of the rotating shaft (16) located in the mounting cylinder (5) and the inner wall of the mounting cylinder (5); A bevel gear 2 (23) meshing with the bevel gear 1 (22) is fixedly mounted on the periphery of the rotating shaft (16), and a winding wheel (24) is fixedly mounted on the periphery of the rotating shaft (16) at a position close to the conduit (10), a transmission line (25) is wound around the winding wheel (24), and a free end of the transmission line (25) passes through the conduit (10) to the hollow column (6).

8. A building eaves drainage structure according to claim 7, characterized in that: Three overflow pipes (9) are fixedly connected through the top of the hollow column (6), and one end of the three overflow pipes (9) away from the hollow column (6) is fixedly connected to the water outlet ends of the three overflow holes (8) respectively; Two limiting columns (17) are fixedly connected between the top and bottom ends of the hollow column (6); a floating body (18) is slidably mounted through the two limiting columns (17); and a retaining ring (19) located below the floating body (18) is fixedly mounted on the periphery of the limiting column (17) at a position close to the bottom. One end of the transmission line (25) located in the hollow column (6) is fixedly connected to the bottom surface of the floating body (18).

9. The building eaves drainage structure according to claim 7, characterized in that: A guide wheel 1 (26) for guiding the transmission line (25) is fixedly mounted on the inner wall of the connecting pipe (2), and a guide wheel 2 (27) for guiding the transmission line (25) is fixedly mounted on the inner bottom surface of the hollow column (6).

10. A building eaves drainage structure according to claim 6, characterized in that: An inclined baffle (38) is fixedly installed in the connecting pipe (2), the baffle (38) is an arc-shaped structure, the baffle (38) is located above the driving column (14), and the sliding rod (13) and the baffle (38) are connected in a through-type sliding manner; A bypass port is provided on the inner wall of the connecting pipe (2) at a lower end close to the baffle (38), and the bypass port is coaxial with the baffle (38) and has the same diameter; The bypass port is fixedly connected to a bypass pipe (37), and one end of the bypass pipe (37) away from the connecting pipe (2) is fixedly connected to the drain pipe (3) in a through-type manner.

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