Self-closing electric municipal pipeline flap

Abstract

The application discloses a self-closing electric municipal pipeline flap, and relates to the technical field of municipal sewage pipe networks, which comprises a fixed side frame, a pipeline and a flap head. A power frame is rotationally arranged at the middle part of the fixed side frame. The bottom side of the power frame is connected with the flap head through a connecting device. The top of the power frame is provided with a positioning plate through a fixing device. The positioning plate is slidably provided with a sleeve on one side through sliding limiting devices. The top of the fixed side frame is rotationally provided with a double-groove winch through a driving element. A steel wire rope is wound on the double-groove winch. One end of the steel wire rope is connected to the top of the power frame, and the other end is connected to the front end of the sleeve through a guide device. A positioning emergency stop device is further arranged between the sleeve and the positioning plate. The application discloses a method for estimating the closing and opening of the existing steel cable stroke, and the flap head can be automatically tightly closed at the pipe opening of the pipeline. Meanwhile, the stroke change of the sleeve after the flap is closed is used to automatically control the motor to stop, so that the flap can be tightly closed every time.

Description

Technical Field

[0001] This application relates to the technical field of municipal sewage pipe networks, and in particular to a self-closing electric municipal pipe flap gate. Background Technology

[0002] Currently, municipal sewage pipe networks are a massive and systematic project. These networks connect to urban waterways via overflow pipes, resulting in a considerable number of overflow pipes. Due to societal progress and the optimization of urban landscapes, there is a requirement that all municipal sewage must be treated within the sewage pipe network, preventing external discharge. Therefore, overflow pipes are required to prevent sewage from flowing into waterways under normal circumstances. However, in special or extreme situations, such as during heavy rain, overflow pipes may release water into waterways to alleviate pressure on the pipe network. Therefore, flap gates need to be opened and closed according to the actual situation.

[0003] In related technologies, there are existing methods that use motors to hoist steel cables to complete the remote automatic opening and closing of flap gates. However, existing technologies estimate the tightness of the flap gate by measuring the length of the hoisting steel cable: that is, empirically testing the length of the hoisting steel cable required for the flap gate to go from maximum opening to tight closing, and then setting the hoisting stroke of the motor to the steel cable for blind operation. However, since there are uncontrollable differences in the stacking of the steel cable coils each time the hoisting cable is wound and unwound, the motor's hoisting stroke will also have significant deviations with multiple hoists. Therefore, it is easy to produce technical problems such as the flap gate being closed according to the remote command but not actually being completely closed. Utility Model Content

[0004] The purpose of this application is to provide a self-closing electric municipal pipeline flap gate to solve the technical problem that the flap gate is prone to not being fully closed when a remote command is sent to close, because the stacking of the steel cable coils is uncontrollable each time the winch winds up and down, and the motor's winch stroke will also deviate significantly with multiple winches.

[0005] The technical solution for a self-closing electric municipal pipeline flap gate provided in this application is as follows: A self-closing electric municipal pipeline flap gate includes a fixed side frame. A pipeline is arranged at the bottom of the fixed side frame, and a flap head is hinged to the front end of the pipeline. A power frame is rotatably arranged at the middle of the fixed side frame. The bottom side of the power frame is connected to one side of the flap head through a connecting device. A positioning plate is arranged at the top of the power frame through a fixing device. A sleeve is slidably arranged on one side of the positioning plate through a sliding limit device. A double-groove winch is rotatably arranged at the top of the fixed side frame through a driving component. A steel wire rope is wound on the double-groove winch. One end of the steel wire rope is connected to one side of the top of the power frame, and the other end is connected to the front end of the sleeve through a guide device. A positioning emergency stop device that cooperates with the driving component is also arranged between the sleeve and the positioning plate.

[0006] Furthermore, the positioning emergency stop device includes a positioning rod disposed on one side of the positioning plate, a positioning block disposed at one end of the positioning rod, a positioning spring sleeved on the positioning rod, a sleeve simultaneously sleeved on the outside of the positioning rod, the positioning block and the positioning spring, a pressing block disposed at the rear end of the sleeve, the pressing block having a pressing hole that cooperates with the positioning rod, the two ends of the positioning spring respectively abutting against the pressing block and the positioning block, and a contact emergency stop mechanism that cooperates with the driving component is also disposed between the sleeve and the positioning plate.

[0007] Furthermore, the emergency stop mechanism includes a positioning rod frame disposed on the outside of the positioning plate, a switch contact plate disposed on one side of the positioning rod frame, and a stop / start switch connected to the driving component disposed on the outside of the sleeve, the contact of the stop / start switch contacting the switch contact plate.

[0008] Furthermore, the sliding limiting device includes limiting rods symmetrically arranged on one side of the positioning plate, sliding sleeves symmetrically arranged on the outer side of the sleeve, two sliding sleeves respectively slidingly sleeved on the outer side of the two limiting rods, limiting blocks symmetrically arranged on the outer side of the two limiting rods, and sliding grooves that cooperate with the limiting blocks symmetrically opened on the inner side of the two sliding sleeves.

[0009] Furthermore, the guiding device includes a guide rod disposed on one side of the fixed side frame. A front wheel frame is symmetrically disposed at the front end of the guide rod, and a front guide wheel is rotatably disposed on both front wheel frames. A rear wheel frame is disposed at the bottom rear end of the guide rod, and a rear guide wheel is rotatably disposed on the rear wheel frame. The front guide wheel and the rear guide wheel respectively abut against the wire rope. An anti-deviation frame is disposed on both the front wheel frame and the rear wheel frame.

[0010] Furthermore, the power frame includes fixed strips symmetrically arranged on one side of the middle of the fixed side frame. A hinge rod is provided between the ends of the two fixed strips. The two ends of the hinge rod pass through the ends of the two fixed strips respectively, and a swing arm is hinged to both ends of the hinge rod. A connecting cross arm is provided between the top ends of the two swing arms. The fixing device is provided on the top of the connecting cross arm, and the connecting device is provided between the bottom ends of the two swing arms and one side of the racket head.

[0011] Furthermore, the fixing device includes a fixing block disposed on the top of the connecting cross arm, the fixing block having a threaded hole, a fixing screw being threadedly connected in the threaded hole, one end of the fixing screw being connected to one side of the positioning plate, and a fixing nut being threadedly connected to the fixing screw, the fixing nut being abutted against one side of the fixing block.

[0012] Furthermore, the connecting device includes connecting lugs symmetrically arranged on one side of the racket head, a connecting rod between the two connecting lugs, both ends of the connecting rod passing through the outer sides of the two connecting lugs respectively, and connecting stops provided at both ends of the connecting rod. A connecting screw is provided on one side of each of the two connecting stops. A connecting plate is provided at the bottom end of each of the two swing arms. A connecting hole that mates with the two connecting screws is provided on each of the two connecting plates. A connecting nut that abuts against the connecting plate is also threaded onto each of the two connecting screws.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: By employing a flap gate structure that integrates a fixed side frame, pipe, flapper head, power frame, connecting device, fixing device, positioning plate, sleeve, sliding limit device, double-groove winch, driving component, steel wire rope, guiding device, and positioning emergency stop device, the existing method of predicting opening and closing based on the steel cable travel is abandoned. This allows for the automatic and tight closure of the flapper head at the pipe opening. Furthermore, through the design of the double-groove winch, steel wire rope, sleeve, sliding limit device, and positioning emergency stop device, the motor is automatically stopped by utilizing the change in sleeve travel after the flap gate closes. This ensures that the flap gate closes tightly each time, thus solving the technical problem of incomplete flap gate closure due to deviations in the motor's winch travel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a self-closing electric municipal pipeline flap gate according to an embodiment of this application.

[0015] Figure 2 This is a schematic diagram of the structure of the beater head, power frame, and connecting device in an embodiment of this application.

[0016] Figure 3 This is a schematic diagram of the structure of the fixing device and the sliding limiting device in the embodiments of this application.

[0017] Figure 4 This is a schematic diagram of the structure of the double-groove winch, drive motor, and protective cover in an embodiment of this application.

[0018] Figure 5 This is a schematic diagram of the structure of the switch contact plate and the on / off switch in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Fixed side frame; 11. Pipe; 12. Double groove winch; 13. Drive motor; 14. Protective cover; 141. Slot hole; 2. Paddle head; 21. Connecting lug; 22. Connecting rod; 23. Connecting stop; 24. Connecting screw; 25. Connecting nut; 3. Power frame; 31. Fixed strip; 32. Hinge rod; 33. Swinging arm; 34. Connecting cross arm; 35. Connecting plate; 351. Connecting hole; 36. Fixed block; 361. Threaded hole; 37. Fixed screw; 38. Fixed nut; 4. Positioning plate; 41. Limiting rod; 42. Limiting block; 43. Positioning rod; 44. Positioning block; 45. Positioning spring; 46. Positioning rod bracket; 47. Switch contact plate; 5. Sleeve; 51. Sliding sleeve; 52. Sliding groove; 53. Connecting end rod; 54. Extrusion block; 55. Extrusion hole; 56. On / off switch; 6. Wire rope; 61. Unwinding end rope; 62. Rewinding end rope; 7. Guide rod; 71. Front wheel bracket; 72. Front guide wheel; 73. Rear wheel bracket; 74. Rear guide wheel. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0021] This application discloses a self-closing electric municipal pipeline flap gate, referring to... Figure 1 and Figure 2 In this embodiment, the self-closing electric municipal pipeline flap gate includes a fixed side frame 1, a pipe 11, a flap head 2, a power frame 3, a connecting device, a fixing device, a positioning plate 4, a sleeve 5, a sliding limit device, a double-groove winch 12, a driving component, a steel wire rope 6, a guiding device, and a positioning emergency stop device. The pipe 11 is installed at the bottom of the fixed side frame 1, and its rear end is connected to the overflow pipe of the municipal sewage network. The flap head 2 is hinged to the front end of the pipe 11 to seal and cover the port of the pipe 11. The power frame 3 is rotatably installed in the middle of the fixed side frame 1, and the connecting device is located between the bottom side of the power frame 3 and the outer side of the flap head 2, so as to connect the bottom side of the power frame 3 and the outer side of the flap head 2, thereby facilitating the opening or closing of the flap head 2 using the power frame 3.

[0022] Specifically, refer to Figure 1 and Figure 2In this embodiment, the power frame 3 includes a fixed plate 31, a hinge rod 32, a swing arm 33, and a connecting cross arm 34. Two fixed plates 31 are symmetrically mounted on one side of the middle of the fixed side frame 1. The hinge rod 32 is mounted between the ends of the two fixed plates 31, with both ends of the hinge rod 32 extending through the outer sides of the ends of the two fixed plates 31. Two swing arms 33 are symmetrically hinged to the two ends of the hinge rod 32. The connecting cross arm 34 is mounted between the top ends of the two swing arms 33. The ends of the two swing arms 33 furthest from the connecting cross arm 34 are simultaneously fixedly connected to the outer side of the racket head 2 via a connecting device.

[0023] When a force is applied to the left and back of the connecting cross arm 34, the two swing arms 33 are respectively connected by hinges at both ends of the hinge rod 32, so that the connecting cross arm 34 simultaneously drives the two swing arms 33 to swing back and forth. Under the action of the connecting device, the bottom ends of the two swing arms 33 can close the flap head 2 at the front end of the pipe 11 or open it from the front end of the pipe 11.

[0024] Specifically, refer to Figure 1 In this embodiment, the connecting device includes connecting lugs 21, connecting rods 22, connecting blocks 23, connecting screws 24, connecting plates 35, and connecting nuts 25. Two connecting lugs 21 are provided, symmetrically mounted on the outer sides of the racket head 2. The connecting rod 22 is installed between the two connecting lugs 21, with both ends of the connecting rod 22 passing through the outer sides of the two connecting lugs 21. Two connecting blocks 23 are provided, symmetrically mounted on both ends of the connecting rod 22. Two connecting screws 24 are provided, with one end of each connecting screw 24 mounted on the side of the two connecting blocks 23 facing away from the connecting rod 22, and both connecting screws 24 are simultaneously collinear with the connecting rod 22.

[0025] Meanwhile, two connecting plates 35 are provided, which are respectively installed at the bottom ends of the two swing arms 33. Each connecting plate 35 has a connecting hole 351, which cooperates with the connecting screw 24, so that the connecting screw 24 passes through the connecting hole 351 and extends to the outside of the connecting plate 35, thereby causing the connecting stop 23 to abut against the inner side of the bottom end of the swing arm 33. Two connecting nuts 25 are provided, which are respectively threaded onto the two connecting screws 24. By screwing the two connecting nuts 25 into the two connecting screws 24, the two connecting nuts 25 are pressed against the outer side of the bottom end of the two swing arms 33, thereby making the connecting nuts 25 and the connecting stop 23 firmly clamp the connecting plate 35, thus realizing a stable connection between the bottom end of the two swing arms 33 and the outer side of the racket head 2.

[0026] Additionally, refer to Figure 1 and Figure 3 In this embodiment, the fixing device is set on the top of the connecting cross arm 34; the positioning plate 4 is installed on one side of the fixing device, and the fixing device can achieve the effect of positioning and installing the positioning plate 4.

[0027] Specifically, the fixing device includes a fixing block 36, a fixing screw 37, and a fixing nut 38. The fixing block 36 is installed at the top center of the connecting cross arm 34, and a threaded hole 361 is formed on the fixing block 36. The fixing screw 37 is threaded into the threaded hole 361, and the front end of the fixing screw 37 is fixedly connected to the rear side of the positioning plate 4. The fixing nut 38 is threaded onto the fixing screw 37.

[0028] By screwing the fixing nut 38 onto the fixing screw 37, the fixing nut 38 is pressed against the front side of the fixing block 36, thereby further securing the fixing screw 37 to the fixing block 36, thus achieving a stable and positioning effect on the positioning plate 4.

[0029] In addition, refer to Figure 1 and Figure 3 In this embodiment, the sleeve 5 has a cylindrical structure, and the outer side of the sleeve 5 is slidably mounted on the side of the positioning plate 4 away from the fixing screw 37 by means of a sliding limiting device. By setting the sliding limiting device, the sleeve 5 can achieve short-distance movement.

[0030] Specifically, the sliding limiting device includes limiting rods 41, sliding sleeves 51, and limiting blocks 42. Two limiting rods 41 are provided, with one end of each rod symmetrically mounted on the side of the positioning plate 4 opposite to the fixing screw 37. Two sliding sleeves 51 are provided, with their outer sides symmetrically mounted on the outer side of the sleeve 5. The two sliding sleeves 51 are slidably fitted onto the outer sides of the two limiting rods 41, allowing the sleeve 5 to slide on the limiting rods 41 via the sliding sleeves 51.

[0031] Meanwhile, four limiting blocks 42 are provided, evenly divided into two groups. Each group of limiting blocks 42 is symmetrically installed on the outer side of the limiting rod 41, and symmetrical sliding grooves 52 are provided on the inner side of each of the two sliding sleeves 51. These sliding grooves 52 cooperate with the limiting blocks 42. By setting the structure of the sliding grooves 52 and the limiting blocks 42, the movement of the sleeve 5 can be limited to a certain extent, thereby preventing the sleeve 5 and the two sliding sleeves 51 from simultaneously detaching from the outside of the limiting rod 41. Specifically, under the limiting action of the sliding grooves 52 and the limiting blocks 42, the sleeve 5 can only move a short distance.

[0032] Secondly, refer to Figure 1 , Figure 4 and Figure 5 In this embodiment, the double-groove winch 12 is rotatably mounted on the top of the fixed side frame 1; the driving component is a drive motor 13, which is mounted on the top of the fixed side frame 1, and the output end of the drive motor 13 is fixedly connected to one end of the double-groove winch 12 so as to drive the double-groove winch 12 to rotate forward or backward; the wire rope 6 is wound on the double-groove winch 12, one end of the wire rope 6 is connected to one side of the connecting cross arm 34, and a connecting end rod 53 is installed at the front end of the sleeve 5, and the other end of the wire rope 6 is connected to the connecting end rod 53 of the sleeve 5 through a guide device.

[0033] Preferably, a protective cover 14 is also installed on the top of the fixed side frame 1. The protective cover 14 covers the outside of the drive motor 13 and the double groove winch 12 to protect the drive motor 13 and the double groove winch 12. A slot 141 is provided on the front side of the protective cover 14. The slot 141 cooperates with the wire rope 6 so that the wire rope 6 extends out of the protective cover 14 along the slot 141.

[0034] Specifically, the double-groove winch 12 includes a winch body rotatably mounted on the top of the fixed side frame 1. One end of the winch body is connected to the output end of the drive motor 13, and two rope grooves are provided on the winch body. One outer side of the wire rope 6 is fixedly connected to the outer side of the middle part of the winch body. One end of the wire rope 6 is wound clockwise around one of the rope grooves and connected to one side of the connecting cross arm 34. The other end of the wire rope 6 is wound counterclockwise around the other rope groove and connected to the connecting end rod 53 on the sleeve 5 along the guide device.

[0035] When the drive motor 13 is started, the output end of the drive motor 13 drives the winch body to rotate, so that the wire rope 6 can move in a state of unwinding at one end and winding at the other end in the two rope grooves, thereby causing the wire rope 6 to simultaneously drive the sleeve 5 and the power frame 3 to move forward.

[0036] Specifically, in this embodiment, the guiding device includes a guide rod 7, a front wheel frame 71, a front guide wheel 72, a rear wheel frame 73, a rear guide wheel 74, and an anti-deviation frame. One end of the guide rod 7 is mounted on one side of the fixed side frame 1; two front wheel frames 71 are provided, symmetrically mounted on the end of the guide rod 7 away from the fixed side frame 1; two front guide wheels 72 are provided, rotatably mounted on the two front wheel frames 71 respectively; the rear wheel frame 73 is mounted on the bottom rear end of the guide rod 7; the rear guide wheel 74 is rotatably mounted on the rear wheel frame 73, and the front guide wheel 72 and the rear guide wheel 74 respectively abut against the wire rope 6.

[0037] By configuring the front guide wheel 72 and the rear guide wheel 74, the wire rope 6 can be effectively guided. Preferably, in this embodiment, anti-deviation frames are installed on both the front wheel frame 71 and the rear wheel frame 73. The anti-deviation frames prevent the wire rope 6 from falling off the front guide wheel 72 and the rear guide wheel 74.

[0038] At the same time, refer to Figure 4 and Figure 5 In this embodiment, the positioning emergency stop device is located between the sleeve 5 and the positioning plate 4, and the positioning emergency stop device is electrically connected to the drive motor 13; by setting the positioning emergency stop device, it is convenient to control the timely stop of the drive motor 13.

[0039] Specifically, in this embodiment, the positioning emergency stop device includes a positioning rod 43, a positioning block 44, a positioning spring 45, a pressing block 54, and a contact emergency stop mechanism. The positioning rod 43 is installed at the center of the side of the positioning plate 4 away from the fixing screw 37; the positioning block 44 is installed at the end of the positioning rod 43 away from the positioning plate 4; the positioning spring 45 is sleeved on the positioning rod 43, and the rear side of the positioning block 44 abuts against the front end of the positioning spring 45, thus blocking the front end of the positioning spring 45 to prevent it from dislodging from the outside of the positioning rod 43; simultaneously, the sleeve 5 is sleeved on the outside of the positioning rod 43, the positioning block 44, and the positioning spring 45.

[0040] In addition, the extrusion block 54 is installed at the rear end of the sleeve 5 facing the positioning plate 4, and an extrusion hole 55 is provided in the middle of the extrusion block 54. The extrusion hole 55 cooperates with the positioning rod 43. When the sleeve 5 moves, it drives the extrusion block 54 and moves along the positioning rod 43 through the extrusion hole 55. The inner side of the extrusion block 54 abuts against the rear end of the positioning spring 45. When the sleeve 5 moves forward, the extrusion block 54 on the sleeve 5 extrudes the positioning spring 45, and under the blocking action of the positioning block 44, the positioning spring 45 is compressed.

[0041] Furthermore, in this embodiment, the emergency stop mechanism is located between the sleeve 5 and the positioning plate 4, and includes a positioning rod 43, a switch contact plate 47, and a stop / start switch 56. The positioning rod 43 is mounted on the side of the positioning plate 4 opposite to the fixing screw 37; the switch contact plate 47 is mounted on the front side of the positioning rod 43; the stop / start switch 56 is mounted on the outer side of the sleeve 5 and is electrically connected to the drive motor 13. When the sleeve 5 continues to move forward under the continued traction of the wire rope 6, the contact of the stop / start switch 56 on the sleeve 5 contacts the switch contact plate 47, causing the contact of the stop / start switch 56 to retract, thereby controlling the drive motor 13 to stop operating. Specifically, the stop / start switch 56 is an existing device and will not be described in detail here.

[0042] The implementation principle of a self-closing electric municipal pipeline flap gate in this application embodiment is as follows: When the prying head 2 needs to be closed at the pipe opening of the pipe 11, the drive motor 13 is started. The output end of the drive motor 13 drives the double groove winch 12 to rotate. At this time, the wire rope 6 connected between the double groove winch 12 and the connecting cross arm 34 is the unwinding end rope 61, and the wire rope 6 connected between the double groove winch 12 and the sleeve 5 is the winding end rope 62. This makes the unwinding end rope 61 unwind the connecting cross arm 34, and the winding end rope 62 wind up the sleeve 5. At this time, the sleeve 5 and the connecting cross arm 34 are in a relatively stationary state. The sleeve 5, the connecting cross arm 34 and the wire rope 6 move forward together, so that the connecting cross arm 34 drives the swing arm 33 to make a lever movement to close the prying prying head 2 at the pipe opening of the pipe 11.

[0043] When the clapper head 2 closes, the power frame 3 can no longer move, while the steel wire rope 6 continues to pull forward, causing the sleeve 5 to continue moving forward. The pressing block 54 on the sleeve 5 then presses the positioning spring 45, forcing the positioning spring 45 to contract and deform, causing the contact of the stop / stop key 56 on the sleeve 5 to come into contact with the switch contact plate 47, causing the contact of the stop / stop key 56 to contract, thereby controlling the drive motor 13 to stop running.

[0044] To explain in detail, when the sleeve 5, the connecting cross arm 34, and the wire rope 6 move forward together, the sleeve 5 and the connecting cross arm 34 are in a relatively stationary state, and the traction force applied to the sleeve 5 is not very large. Therefore, when the sleeve 5 moves forward, the pressing block 54 on the sleeve 5 will not compress the positioning spring 45. However, when the power frame 3 can no longer move, the traction force applied to the sleeve 5 increases, forcing the pressing block 54 on the sleeve 5 to compress the positioning spring 45.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A self-closing electric municipal pipeline flap gate, characterized in that: The device includes a fixed side frame (1), with a pipe (11) at the bottom and a racket head (2) hinged to the front end of the pipe (11). A power frame (3) is rotatably mounted in the middle of the fixed side frame (1). The bottom side of the power frame (3) is connected to one side of the racket head (2) via a connecting device. A positioning plate (4) is mounted on the top of the power frame (3) via a fixing device. A sleeve (5) is slidably mounted on one side of the positioning plate (4) via a sliding limit device. A double-groove winch (12) is rotatably mounted on the top of the fixed side frame (1) via a driving component. A steel wire rope (6) is wound on the double-groove winch (12). One end of the steel wire rope (6) is connected to one side of the top of the power frame (3), and the other end is connected to the front end of the sleeve (5) via a guide device. A positioning emergency stop device that cooperates with the driving component is also provided between the sleeve (5) and the positioning plate (4).

2. The self-closing electric municipal pipeline flap gate according to claim 1, characterized in that: The positioning emergency stop device includes a positioning rod (43) disposed on one side of the positioning plate (4), a positioning block (44) disposed at one end of the positioning rod (43), a positioning spring (45) sleeved on the positioning rod (43), a sleeve (5) sleeved on the outside of the positioning rod (43), the positioning block (44) and the positioning spring (45), a pressing block (54) disposed at the rear end of the sleeve (5), a pressing hole (55) cooperating with the positioning rod (43) is provided on the pressing block (54), the two ends of the positioning spring (45) abut against the pressing block (54) and the positioning block (44) respectively, and a contact emergency stop mechanism cooperating with the driving component is also provided between the sleeve (5) and the positioning plate (4).

3. A self-closing electric municipal pipeline flap gate according to claim 2, characterized in that: The contact emergency stop mechanism includes a positioning rod (43) frame disposed on the outside of the positioning plate (4), a switch contact plate (47) is disposed on one side of the positioning rod (43) frame, and a stop / start switch (56) connected to the drive component is disposed on the outside of the sleeve (5), and the contact of the stop / start switch (56) is in contact with the switch contact plate (47).

4. A self-closing electric municipal pipeline flap gate according to claim 1, characterized in that: The sliding limiting device includes limiting rods (41) symmetrically arranged on one side of the positioning plate (4), and sliding sleeves (51) symmetrically arranged on the outer side of the sleeve (5). The two sliding sleeves (51) are respectively slidably sleeved on the outer side of the two limiting rods (41). Limiting blocks (42) are symmetrically arranged on the outer side of the two limiting rods (41). Sliding grooves (52) that cooperate with the limiting blocks (42) are symmetrically opened on the inner side of the two sliding sleeves (51).

5. A self-closing electric municipal pipeline flap gate according to claim 1, characterized in that: The guiding device includes a guide rod (7) disposed on one side of the fixed side frame (1). A front wheel frame (71) is symmetrically disposed at the front end of the guide rod (7). A front guide wheel (72) is rotatably disposed on both front wheel frames (71). A rear wheel frame (73) is disposed at the bottom rear end of the guide rod (7). A rear guide wheel (74) is rotatably disposed on the rear wheel frame (73). The front guide wheel (72) and the rear guide wheel (74) respectively abut against the wire rope (6). An anti-deviation frame is disposed on both the front wheel frame (71) and the rear wheel frame (73).

6. A self-closing electric municipal pipeline flap gate according to claim 1, characterized in that: The power frame (3) includes fixed strips (31) symmetrically arranged on one side of the middle of the fixed side frame (1). A hinge rod (32) is provided between the ends of the two fixed strips (31). The two ends of the hinge rod (32) pass through the ends of the two fixed strips (31) respectively. Both ends of the hinge rod (32) are hinged to swing arms (33). A connecting cross arm (34) is provided between the top ends of the two swing arms (33). The fixing device is provided on the top of the connecting cross arm (34). The connecting device is provided between the bottom ends of the two swing arms (33) and one side of the racket head (2).

7. A self-closing electric municipal pipeline flap gate according to claim 6, characterized in that: The fixing device includes a fixing block (36) disposed on the top of the connecting cross arm (34). The fixing block (36) has a threaded hole (361). A fixing screw (37) is threadedly connected to the threaded hole (361). One end of the fixing screw (37) is connected to one side of the positioning plate (4). A fixing nut (38) is also threadedly connected to the fixing screw (37). The fixing nut (38) abuts against one side of the fixing block (36).

8. A self-closing electric municipal pipeline flap gate according to claim 6, characterized in that: The connecting device includes connecting lugs (21) symmetrically arranged on one side of the racket head (2), a connecting rod (22) is provided between the two connecting lugs (21), the two ends of the connecting rod (22) respectively pass through the outside of the two connecting lugs (21), and a connecting stop (23) is provided at both ends of the connecting rod (22). A connecting screw (24) is provided on one side of the two connecting stops (23). A connecting plate (35) is provided at the bottom end of the two swing arms (33). A connecting hole (351) is provided on the two connecting plates (35) to cooperate with the two connecting screws (24). A connecting nut (25) that abuts against the connecting plate (35) is also threaded on the two connecting screws (24).

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