CN113026585A

CN113026585A - Safety protective net

Info

Publication number: CN113026585A
Application number: CN202110365255.8A
Authority: CN
Inventors: 李树一; 杨彪; 肖生明; 陈勇; 徐林; 高远; 赵国平; 曹佳荣; 李娜; 宋颖; 黄佳祺
Original assignee: PowerChina Huadong Engineering Corp Ltd; Zhejiang Huadong Engineering Construction Management Co Ltd
Current assignee: PowerChina Huadong Engineering Corp Ltd; Zhejiang Huadong Engineering Construction Management Co Ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-06-25
Anticipated expiration: 2041-04-06
Also published as: CN113026585B; CN115162295B; CN115162295A

Abstract

The invention belongs to the field of dredging of hidden culverts, and particularly relates to a safety protection net which comprises support columns, support arms A, support arms B, a breathing mechanism, a cross rod, a safety net, an opening, a floating ball, weft ropes, warp ropes and connecting blocks, wherein the two support columns are vertically fixed in the hidden culverts from the outside of the entrance and the exit of the hidden culverts; when the surface of water in the hidden culvert rises fast, the pin joint of two support arm A and safe online connecting block breaks off first under the pulling of all floater, and the pin joint of two support arm B and safe online connecting block breaks off along with the disconnection of the pin joint of support arm A and connecting block tightly for the safety net floats on the surface of water that rises around the horizontal pole, and the flowing water that can not the high-speed flow forms and stops. When the desilting person is flushed to the safety net by the rapidly rising flowing water in the hidden culvert, the drowning person can grasp the safety net to fix the body, and can escape from the entrance and the exit of the hidden culvert rapidly in time.

Description

Safety protective net

Technical Field

The invention belongs to the field of hidden culvert dredging, and particularly relates to a safety protection net.

Background

The hidden culvert is a drainage channel or a water channel which is arranged below a roadbed and built below a road surface in order to ensure that a road smoothly passes through a water channel without obstructing traffic in the construction of road engineering.

In 11 th 4 th 2019, Shenzhen city suddenly falls into storm, a large amount of rainwater gushes into the hidden culvert, and 11 persons who are in construction operation in the hidden culvert are phagocytosed, so that a painful hidden culvert drowning accident is caused.

A lot of garbage flushed by rainwater can often float in the hidden culvert serving as a water passage, and the garbage can not be cleaned in time, so that flowing water in the hidden culvert is smelly. If the smelly water is discharged into the municipal water way, water pollution is caused. Therefore, in order to ensure that the water quality in the hidden culvert is not polluted, the garbage in the hidden culvert must be cleaned frequently, and certain safety guarantee is necessary to the construction operation in the hidden culvert.

In addition, the collection of garbage in the hidden culvert is also a problem to be solved.

The invention designs a safety protection net to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a safety protection net which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A safety protection net comprises support columns, support arms A, support arms B, a breathing mechanism, a cross bar, a safety net, an opening, floating balls, weft ropes, warp ropes and connecting blocks, wherein the two support columns are vertically fixed in a hidden culvert from the outside of an entrance and an exit of the hidden culvert; one end of a safety net which is as wide as the hidden culvert entrance and exit is arranged on the cross rods at the top ends of the two supporting columns, and the other end of the safety net is provided with a plurality of floating balls which are uniformly distributed along the width direction of the hidden culvert entrance and exit.

A pair of detachable support arms B and a pair of detachable support arms A are arranged on the two support columns from top to bottom; the tail ends of the two support arms A and the two support arms B are respectively hinged with four connecting blocks which are symmetrically arranged at two sides of the safety net. The length is greater than the safety net of the height of dark culvert and support arm A's pin joint lies in the surface of water in the dark culvert below, and two support arm A and two support arm B prop the portion that is equivalent with dark culvert cross sectional area on the complete net and open, guarantee that the safety net effectively intercepts the rubbish of floating the surface of water in the dark culvert. The hinged point of the support arm A and the connecting block and the hinged point of the support arm B and the connecting block are sequentially disconnected under the pulling of the floating ball with gradually increased buoyancy along with the rising of the liquid level of running water in the hidden culvert, so that the safety net can float on the water surface when the water surface in the hidden culvert rises, and a drowner can grasp the safety net to escape from the entrance and the exit of the hidden culvert.

The middle part of the safety net is provided with an opening which is convenient for people to pass through the hidden culvert and corresponds to the entrance and the exit of the hidden culvert; two weft ropes transversely pulled are symmetrically arranged at the upper end and the lower end in the opening, and two warp ropes which are used for reducing the opening area and are convenient to grasp along with a drowning person moving in running water are arranged between the two weft ropes in a left-right sliding fit mode when a hinged point of the support arm B and the connecting block is disconnected.

Two breathing mechanisms for the drowned person to breathe in the hidden culvert are symmetrically arranged on the two support columns.

As the further improvement of the technology, the lower ends of the support columns are in threaded fit with the internal thread sleeves fixed at the bottom of the hidden culvert through bolts, and the lower ends of the two support columns are effectively fixed. The fixed plate that both ends were nested respectively on two support columns passes through the bolt fastening and secretly contains the entrance to be gone out, effectively fixes the upper end of two support columns. The cross bar is arranged at the top ends of the two support columns through bolts; a plurality of hanging rings nested on the cross rod are uniformly installed at the upper end of the safety net along the width direction of the safety net, and the support arm A and the support arm B are detachably installed on the two support columns through bolts.

As a further improvement of the technology, two connecting blocks hinged with the pair of support arms A are respectively installed in two notches A at two sides of the safety net, and two connecting blocks hinged with the pair of support arms B are respectively installed in two notches B at two sides of the safety net. A ring sleeve is rotationally matched in the ring groove C on the outer side of the connecting block, the ring sleeve is connected with the upper half section of the fracture part of the edge rope on the side of the safety net at the notch A or the notch B, and the fixed block B arranged on the connecting block is connected with the lower half section of the fracture part of the edge rope on the side of the safety net at the notch A or the notch B; the tail ends of the support arm A and the support arm B are both provided with a U seat; two round pins are symmetrically arranged on the inner sides of the two branches of the U-shaped base, and a clamping block is arranged at the tail end of each round pin; two clamping blocks arranged on the same U seat rotate in two circular grooves A in corresponding connecting blocks around the central axis of the circular pin, and the circular pin is matched with a sliding groove A which is arranged on the side wall of each connecting block and communicated with the circular groove A on the corresponding side; and a separation opening for facilitating the separation of the fixture block from the connecting block is formed in the inner wall of the circular groove A.

As a further improvement of the technology, a swing groove B is formed in the position of the separation port of the connecting block arranged in the notch A, and a baffle B for opening and closing the separation port is hinged in the swing groove B, so that the support arm A is prevented from being disconnected from the connecting block due to careless swing of the floating ball end of the safety net in the installation process. A sliding groove B is formed in the inner wall of the swinging groove B, a sliding block B and a sliding block C are arranged in the sliding groove B in a sliding mode along the central axis direction of the ring sleeve, and the sliding block C is connected with the sliding block B through a spring B; a tip cone arranged on the end face of the sliding block B is matched with a cone groove on the side wall of the corresponding baffle B; a screw rod which is rotationally matched with the circular groove B on the sliding block C is in threaded fit with the threaded hole on the connecting block; the tail end of the screw rod is provided with a torsion wheel.

As a further improvement of the technology, the sliding block B is symmetrically provided with two guide blocks B which respectively slide in two guide grooves B on the inner wall of the sliding groove B. The cooperation of the guide block B and the guide groove B plays a role in positioning and guiding the sliding block B in the sliding groove B. Two guide blocks C are symmetrically arranged on the sliding block C and respectively slide in the two guide grooves B. The cooperation of the guide block C and the guide groove B plays a role in positioning and guiding the sliding of the sliding block C in the sliding groove B. The circular ring arranged on the screw rotates in the circular groove D on the inner wall of the circular groove D, so that the screw and the sliding block C only rotate relatively and do not move axially relatively.

As a further improvement of the technology, an arc block which is the same as the circular groove A in the central axis is arranged on the connecting block arranged in the gap B, a swing groove A on the inner wall of the arc block is matched with a hanging rod arranged on one corresponding U-shaped seat, and two clamping rings are nested on the hanging rod. The two ends of the clamping block are provided with rotating arc surfaces matched with the corresponding circular grooves A, so that the contact area between the clamping block and the inner cylindrical surface of the circular groove A is increased, the rotating abrasion of the clamping block in the circular groove A is reduced, and the rotation of the clamping block in the circular groove A is more stable. Two ends of the warp ropes are respectively connected with the slip rings nested on the two weft ropes; each warp rope is connected with a fixed block A arranged on the other warp rope side of the safety net through two elastic ropes which are symmetrically distributed; two pull ropes are symmetrically arranged on each warp rope, and the two pull ropes are respectively connected with two clamping rings on the same side by bypassing a traction sleeve fixed on a safety net.

As a further improvement of the technology, the breathing mechanism comprises a support rod, an accommodating sleeve, a breathing hose, a filter screen, a sealing cover, a baffle A, a bolt, a clamping plate, a sliding block A and a spring A, wherein the support rod with the upper end positioned above the entrance and the exit of the hidden culvert is arranged on a corresponding support column through a bolt; the lower end of the supporting rod is provided with an accommodating sleeve communicated with the breathing groove on the supporting rod; a sliding block A slides in the accommodating sleeve, and a spring A for resetting the sliding block A is arranged in the accommodating sleeve; a baffle A for opening and closing the accommodating sleeve is hinged to the opening of the accommodating sleeve, and the baffle A closes the accommodating sleeve through a bolt; a plurality of elastic clamping plates which are uniformly distributed on the plug pins in the circumferential direction are matched with the ring grooves B on the inner walls of the slots on the end surfaces of the accommodating sleeves; the bolt is connected with the two sides of the middle part of the safety net through a rope; a breathing hose is arranged in a breathing groove on the supporting rod, and the wound part of the lower end of the breathing hose is positioned in a space between the sliding block A and the baffle A in the accommodating sleeve; a circular groove A is formed in the notch at the upper end of the breathing groove, and a filter screen connected with the upper end of the breathing hose is installed in the circular groove A; the notch of the ring groove A is provided with a sealing cover for preventing dust from entering.

As a further improvement of the present technology, the spring a is a compression spring; one end of the spring A is connected with the inner wall of the accommodating sleeve, and the other end of the spring A is connected with the end face of the sliding block A; two guide blocks A are symmetrically arranged on the sliding block A, and the two guide blocks A respectively slide in two guide grooves A on the inner wall of the accommodating sleeve. The matching of the guide block A and the guide groove A plays a role in positioning and guiding the sliding of the sliding block A in the accommodating sleeve.

As a further improvement of the technology, the support column is provided with the hidden culvert water level monitoring acousto-optic early warning device, the rising of the water level in the hidden culvert caused by the conditions of raining, upstream reservoir water discharging, municipal pipeline cleaning or other upstream unidentified water and the like is monitored, a more sensitive early warning signal is provided for the rapid evacuation of hidden culvert construction operators and mechanical equipment, and the purpose of guaranteeing the safety of the personnel and the mechanical equipment is achieved.

Compared with the traditional hidden culvert dredging operation protective net, the hidden culvert dredging operation protective net can effectively intercept garbage carried by flowing water in the hidden culvert when the water rises in the hidden culvert, and is convenient for a dredging worker in the hidden culvert to effectively clean the garbage in the hidden culvert. Meanwhile, the safety net in the state of intercepting the water surface floating garbage in the hidden culvert does not form a barrier to the passage of the desilting workers in the hidden culvert.

When the surface of water in the hidden culvert rises fast, the pin joint of two support arm A and safe online connecting block breaks off first under the pulling of all floater, and the pin joint of two support arm B and safe online connecting block breaks off along with the disconnection of the pin joint of support arm A and connecting block tightly for the safety net floats on the surface of water that rises around the horizontal pole, and the flowing water that can not the high-speed flow forms and stops. When the desilting person is flushed to the safety net by the rapidly rising flowing water in the hidden culvert, the drowning person can grasp the safety net to fix the body, and can escape from the entrance and the exit of the hidden culvert rapidly in time.

When the pin joint disconnection of support arm B and safety net on the connecting block, two in the opening on the safety net slide to the opening middle part relatively in the twinkling of an eye through the rope to improve the probability of snatching on the safety net of drowning person through the safety net, improve drowning person's oneself and salvage efficiency.

In addition, install two respiratory mechanism on two support columns and can provide oxygen for the drowning person that can not in time come out from the surface of water below, guarantee that the drowning person can not be because of failing in time to flee from the dark intension and the dead. The invention has simple structure and better use effect.

Drawings

FIG. 1 is a schematic sectional view of the installation of the present invention in a dark culvert.

Fig. 2 is a schematic cross-sectional view of three partial installations of the present invention.

Fig. 3 is an overall schematic view of the present invention from two perspectives.

FIG. 4 is a schematic cross-sectional view of the connection between the side rope, the ring, the connecting block and the fixing block B.

FIG. 5 is a cross-sectional view of the U-shaped seat, round pin, clamping block, connecting block, ring sleeve, fixing block B and side rope.

Fig. 6 is a schematic cross-sectional view of the connection block, the latch, and the baffle B.

FIG. 7 is a schematic cross-sectional view of the baffle B, the tip cone, the slider B, the spring B, the slider C, the screw and the torsion wheel.

FIG. 8 is a schematic cross-sectional view of the connection block, the arc block, the hanging rod and the U-shaped seat.

Fig. 9 is a cross-sectional view of the seat, connection block and latch of arm B, U.

FIG. 10 is a schematic view of the safety net, weft and warp cords in combination with a pull cord.

FIG. 11 is a cross-sectional view of a safety net, weft cords, warp cords, and pull cords partially engaged.

FIG. 12 is a schematic view of the arm A and the U-shaped seat being engaged and the arm B and the U-shaped seat being engaged.

FIG. 13 is a schematic cross-sectional view of a connector block and its two views.

Fig. 14 is a schematic partial cross-sectional view of a respiratory mechanism and its three views.

Fig. 15 is a cross-sectional view of the latch, the baffle a and the accommodating sleeve.

FIG. 16 is a cross-sectional view of the post and receiving sleeve.

Figure 17 is a cross-sectional view of the arc block and slider C.

FIG. 18 is a schematic view of a security net.

Number designation in the figures: 1. hidden culvert construction; 2. an entrance and an exit; 3. a support pillar; 4. an internal thread sleeve; 5. a bolt; 6. a support arm A; 7. a U seat; 9. a round pin; 10. a clamping block; 11. rotating the arc surface; 12. a support arm B; 13. a hanging rod; 14. a fixing plate; 15. a respiratory mechanism; 16. a strut; 17. a breathing groove; 18. a receiving sleeve; 19. a guide groove A; 20. a slot; 21. a ring groove B; 22. a breathing hose; 23. a filter screen; 24. sealing the cover; 25. a baffle A; 26. a bolt; 27. clamping a plate; 28. a slide block A; 29. a guide block A; 30. a spring A; 31. a cross bar; 32. hanging a ring; 33. a safety net; 34. a side rope; 35. a notch A; 36. a notch B; 37. an opening; 38. a floating ball; 39. weft ropes; 40. a slip ring; 41. a warp rope; 43. an elastic cord; 44. a fixed block A; 45. pulling a rope; 46. a traction sleeve; 47. a snap ring; 48. an arc block; 49. a swinging groove A; 50. connecting blocks; 51. a ring groove C; 52. a circular groove A; 53. a chute A; 54. a swing groove B; 55. a chute B; 56. a guide groove B; 57. a threaded hole; 58. a baffle B; 59. a conical groove; 60. a tip cone; 61. a slide block B; 62. a guide block B; 63. a spring B; 64. a slider C; 65. a ring groove D; 66. a guide block C; 67. a circular ring; 68. a screw; 69. a torsion wheel; 70. sleeving a ring; 71. a fixed block B; 72. a detachment port; 73. a ring groove A; 74. and a circular groove B.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 3, it comprises a support column 3, a support arm a6, a support arm B12, a breathing mechanism 15, a cross bar 31, a safety net 33, an opening 37, a floating ball 38, a weft rope 39, a warp rope 41 and a connecting block 50, wherein as shown in fig. 1 and 2, two support columns 3 are vertically fixed in a hidden culvert 1 from the outside of an entrance 2 of the hidden culvert 1; as shown in fig. 1, 2 and 3, one end of a safety net 33 having the same width as the entrance 2 of the culvert 1 is mounted on the cross bar 31 at the top end of the two support columns 3, and the other end of the safety net 33 is mounted with a plurality of floating balls 38 uniformly distributed along the width direction of the entrance 2 of the culvert 1.

As shown in fig. 3, a pair of detachable arms B12 and a pair of detachable arms a6 are mounted on the two support columns 3 from top to bottom; as shown in fig. 5 and 6, the distal ends of two arms a6 and two arms B12 are hinged to four connecting blocks 50 symmetrically mounted on both sides of safety net 33. As shown in fig. 1 and 3, the hinged point of the safety net 33 and the support arm a6, which is longer than the height of the culvert 1, is located below the water surface in the culvert 1, and the two support arms a6 and B12 prop the part of the complete net corresponding to the cross-sectional area of the culvert 1, so that the safety net 33 can effectively intercept the garbage floating on the water surface in the culvert 1. The hinged point of the support arm A6 and the connecting block 50 and the hinged point of the support arm B12 and the connecting block 50 are sequentially disconnected along with the rising of the water level in the hidden culvert 1 under the pulling of the floating ball 38 with gradually increased buoyancy, so that the safety net 33 can float on the water surface when the water level in the hidden culvert 1 rises, and drowners can grasp the safety net 33 to escape from the doorway 2 of the hidden culvert 1.

As shown in fig. 1 and 18, the middle part of the safety net 33 is provided with an opening 37 which is convenient for people to pass through the hidden culvert 1 and corresponds to the entrance 2 of the hidden culvert 1; as shown in fig. 10 and 11, two weft cords 39 transversely pulled are symmetrically arranged in the opening 37 at the upper end and the lower end, and two warp cords 41 which reduce the area of the opening 37 when the hinge point of the support arm B12 and the connecting block 50 is disconnected and are convenient for a drowner moving along with flowing water to grasp are slidably fitted between the two weft cords 39 from left to right.

As shown in fig. 3, two breathing mechanisms 15 for the drowner in the hidden culvert 1 to breathe are symmetrically arranged on the two supporting columns 3.

As shown in fig. 1 and 2, the lower ends of the support columns 3 are in threaded fit with the internal thread sleeves 4 fixed to the bottom of the culvert 1 through bolts 5, so that the lower ends of the two support columns 3 are effectively fixed. As shown in fig. 1, 2 and 3, the fixing plates 14 respectively embedded at the two ends of the two supporting columns 3 are fixed at the inlet and outlet 2 of the culvert 1 through bolts 5, so as to effectively fix the upper ends of the two supporting columns 3. As shown in fig. 2, 3 and 18, a cross bar 31 is mounted on the top ends of two support columns 3 through bolts 5; a plurality of hanging rings 32 nested on the cross rod 31 are uniformly arranged at the upper end of the safety net 33 along the width direction of the safety net, and the support arm A6 and the support arm B12 are detachably arranged on the two support columns 3 through bolts 5.

As shown in fig. 3, 4 and 8, two connecting blocks 50 hinged to the pair of arms a6 are respectively installed in two notches a35 on both sides of safety net 33, and two connecting blocks 50 hinged to the pair of arms B12 are respectively installed in two notches B36 on both sides of safety net 33. As shown in fig. 4, 9 and 18, a ring sleeve 70 is rotatably fitted in a ring groove C51 on the outer side of the connecting block 50, the ring sleeve 70 is connected with the upper half section of the edge rope 34 on the side of the safety net 33 at the break of the notch a35 or the notch B36, and a fixing block B71 mounted on the connecting block 50 is connected with the lower half section of the edge rope 34 on the side of the safety net 33 at the break of the notch a35 or the notch B36; as shown in fig. 5, 8 and 12, the ends of the support arm a6 and the support arm B12 are provided with a U-shaped seat 7; two round pins 9 are symmetrically arranged on the inner sides of two branches of the U-shaped seat 7, and a clamping block 10 is arranged at the tail end of each round pin 9; as shown in fig. 6, 9 and 13, two blocks 10 mounted on the same U-shaped seat 7 rotate around the central axis of the round pin 9 in two round grooves a52 in the corresponding connecting block 50, and the round pin 9 is engaged with a sliding groove a53 on the side wall of the connecting block 50, which is communicated with the round groove a52 on the corresponding side; the inner wall of the circular groove A52 is provided with a separation opening 72 for facilitating the separation of the fixture block 10 from the connecting block 50.

As shown in fig. 6, 7 and 13, the disengaging opening 72 of the connecting block 50 installed in the notch a35 is provided with a swing groove B54, and a baffle B58 for opening and closing the disengaging opening 72 is hinged in the swing groove B54, so as to prevent the connecting between the arm a6 and the connecting block 50 from being broken due to careless swinging of the end of the floating ball 38 of the safety net 33 in the installation process. A sliding groove B55 is formed in the inner wall of the swinging groove B54, a sliding block B61 and a sliding block C64 slide in the sliding groove B55 along the central axis direction of the ring sleeve 70, and the sliding block C64 is connected with the sliding block B61 through a spring B63; the top cone 60 arranged on the end face of the sliding block B61 is matched with the cone groove 59 on the side wall of the corresponding baffle B58; the screw 68 which is rotationally matched with the circular groove B74 on the sliding block C64 is in threaded fit with the threaded hole 57 on the connecting block 50; a torsion wheel 69 is mounted at the end of the screw 68.

As shown in fig. 7 and 13, two guide blocks B62 are symmetrically mounted on the slider B61, and the two guide blocks B62 slide in two guide grooves B56 on the inner wall of the sliding groove B55. The cooperation of the guide block B62 and the guide groove B56 plays a role in positioning and guiding the slide block B61 in the slide groove B55. Two guide blocks C66 are symmetrically arranged on the sliding block C64, and the two guide blocks C66 slide in the two guide grooves B56 respectively. The cooperation of the guide block C66 and the guide groove B56 plays a positioning and guiding role in the sliding of the slide block C64 in the slide groove B55. As shown in fig. 7 and 17, the ring 67 mounted on the screw 68 rotates in the ring groove D65 on the inner wall of the ring groove D, ensuring that the screw 68 and the slider C64 only rotate relatively and do not move axially relatively.

As shown in fig. 8 and 17, the connecting block 50 installed in the gap B36 is provided with an arc block 48 having the same central axis as the circular groove a52, the swing groove a49 on the inner wall of the arc block 48 is matched with the hanging rod 13 installed on one corresponding U seat 7, and two snap rings 47 are nested on the hanging rod 13. As shown in fig. 6, 9 and 12, the latch 10 has the rotation arc surfaces 11 at both ends thereof, which are engaged with the corresponding circular grooves a52, to increase the contact area between the latch 10 and the inner cylindrical surface of the ring groove a73, so as to reduce the rotational wear of the latch 10 in the circular groove a52, and to make the rotation of the latch 10 in the circular groove a52 more stable. As shown in fig. 10 and 11, both ends of the warp ropes 41 are respectively connected with the slip rings 40 nested on the two weft ropes 39; each warp rope 41 is connected with another fixed block A44 arranged on the safety net 33 at the side of the warp rope 41 through two elastic ropes 43 which are symmetrically distributed; as shown in fig. 8, 10 and 11, two pull ropes 45 are symmetrically mounted on each warp rope 41, and the two pull ropes 45 are respectively connected with two snap rings 47 on the same side by bypassing a traction sleeve 46 fixed on the safety net 33.

As shown in fig. 14, the breathing mechanism 15 comprises a support rod 16, a containing sleeve 18, a breathing hose 22, a filter screen 23, a cover 24, a baffle a25, a bolt 26, a catch plate 27, a slide block a28 and a spring a30, wherein as shown in fig. 2 and 14, the support rod 16 with the upper end positioned above the inlet and outlet 2 of the culvert 1 is arranged on a corresponding support column 3 through a bolt 5; as shown in fig. 14 and 16, the lower end of the strut 16 is provided with a containing sleeve 18 communicated with a breathing groove 17 on the strut 16; a sliding block A28 is arranged in the containing sleeve 18 in a sliding way, and a spring A30 for resetting the sliding block A28 is arranged in the containing sleeve 18; as shown in fig. 14, 15 and 16, a shutter a25 is hinged at the opening 37 of the accommodating sleeve 18 for opening and closing the accommodating sleeve 18, and the shutter a25 closes the accommodating sleeve 18 through the latch 26; a plurality of elastic clamping plates 27 which are uniformly distributed on the bolt 26 in the circumferential direction are matched with a ring groove B21 on the inner wall of the slot 20 on the end surface of the accommodating sleeve 18; the bolts 26 are connected with the two sides of the middle part of the safety net 33 through ropes; a breathing hose 22 is arranged in the breathing groove 17 on the strut 16, and the coiled part of the lower end of the breathing hose 22 is positioned in the space between the slide block A28 and the baffle plate A25 in the accommodating sleeve 18; a circular groove A73 is formed at the notch at the upper end of the breathing groove 17, and a filter screen 23 connected with the upper end of the breathing hose 22 is installed in the circular groove A73; the notch of the ring groove a73 is fitted with a cover 24 that prevents the ingress of dust.

As shown in fig. 14, the spring a30 is a compression spring; one end of the spring A30 is connected with the inner wall of the containing sleeve 18, and the other end is connected with the end face of the sliding block A28; two guide blocks A29 are symmetrically arranged on the sliding block A28, and the two guide blocks A29 slide in two guide grooves A19 on the inner wall of the accommodating sleeve 18 respectively. The cooperation of the guide block a29 with the guide slot a19 provides a positioning guide for the sliding movement of the slide block a28 within the receiving sleeve 18.

As shown in figure 1, install 1 water level monitoring reputation early warning device of dark culvert on the above-mentioned support column 3, to raining, the condition such as upstream reservoir is drained, municipal pipeline washs or other upper reaches are not clear to come the water level rise in 1 dark culvert that the condition arouses monitor, withdraw rapidly for 1 construction operation personnel of dark culvert and mechanical equipment and provide more sensitive early warning signal, reach the purpose of guarantee personnel and mechanical equipment safety.

The invention is arranged in front of the dredging workers in the hidden culvert 1 along the water flowing direction in the hidden culvert 1, so that the dredging workers can effectively clean the garbage intercepted by the safety net 33.

The opening dimensions in the figures are such that, to illustrate the arrangement of the structures therein, which are larger than the actual openings, the width of the opening 37 of the actual safety net 33 is approximately one third of the width of the safety net 33 or the width does not exceed 0.5 m.

The holes of the safety net 33 of the present invention are smaller than the volume of the garbage floating in the culvert 1.

The working process of the invention is as follows: in the initial state, the latches 10 on the two arms a6 rotate in the circular grooves a52 of the corresponding connecting block 50, and the circular pins 9 on the arms a6 are located in the sliding grooves a53 of the corresponding connecting block 50. The baffle B58 is in a closed state for the disengaging port 72 on the corresponding circular groove A52, the tip cone 60 is in the cone groove 59 on the corresponding baffle B58, and all the springs B63 are in a compressed energy storage state. All the floating balls 38 float on the water surface in the dark culvert 1.

In the initial state, the latches 10 on the arms B12 rotate in the circular grooves a52 of the corresponding link blocks 50, and the circular pins 9 on the arms B12 are in the sliding grooves a53 of the corresponding link blocks 50. The snap ring 47 is nested on the corresponding hanging rod 13, and one end of the hanging rod 13 is positioned in the swinging groove A49 on the corresponding arc block 48. Two warp cords 41 are located at two side limit positions in the opening 37 of the safety net 33, and two elastic cords 43 on each warp cord 41 are in a stretching energy storage state. The annular groove a73 on the strut 16 is closed off by the corresponding closure 24. The spring a30 within each containment case 18 is in a compressed energy storage state and the flapper a25 is in a closed state for the respective containment case 18.

After the present invention is installed, the cover 24 of the breathing mechanism 15 is firstly pulled out, so that the breathing grooves 17 on the supporting rods 16 in the breathing mechanism 15 are unblocked.

When the water surface in the hidden culvert 1 is normal, the safety net 33 effectively intercepts the garbage floating along with flowing water in the hidden culvert 1, so that the desilting workers in the hidden culvert 1 can effectively clean the garbage in the hidden culvert 1. At the same time, the opening 37 in the middle of the safety net 33 facilitates the passage of the staff in the culvert 1.

When the water surface in the hidden culvert 1 rapidly rises due to rainstorm, one end of the safety net 33, which is provided with the floating ball 38, swings around the central axis of the ring sleeve 70 on the connecting block 50 connected with the support arm A6 on the safety net 33 along with the rising of the floating ball 38, the connecting block 50 connected with the support arm A6 swings around the corresponding round pin 9 relative to the U seat 7 on the support arm A6 under the driving of the lower half-section border rope 34 in the notch A35, the clamping block 10 on the support arm A6 rotates in the round groove A52 on the corresponding connecting block 50, and one end of the clamping block 10 gradually approaches to the corresponding separation opening 72.

As the water level in the culvert 1 continues to rise, the length of the floating ball 38 between the hinge points of the arm A6 on the safety net 33 and the connecting block 50 limits the swing of the floating ball downward to the vertical direction of the portion between the hinge points of the arm A6 on the safety net 33 and the connecting block 50. When the portion of safety net 33 between the hinge points of arm a6 and link block 50 swings to the extreme vertical position, one end of latch 10 on arm a6 is just opposite to disengagement port 72 on the corresponding link block 50, but since disengagement port 72 is closed by corresponding shutter B58, latch 10 does not slide out of round groove a52 on link block 50 through disengagement port 72.

As the water level continues to rise, the floating ball 38 at one end of the safety net 33 is gradually submerged by the water which continues to rise, and the buoyancy of the floating ball 38 is gradually increased. When the floating ball 38 is completely submerged, the buoyancy of the floating ball 38 reaches the maximum, the clamping block 10 on the support arm a6 overcomes the pressing of the tip cone 60 on the corresponding baffle B58, so that the tip cone 60 on the connecting block 50 hinged to the clamping block 10 on the support arm a6 is separated from the cone groove 59 on the corresponding baffle B58 and the closing state of the baffle B58 on the corresponding separation port 72 is released, the clamping block 10 pushes the baffle B58 open under the continuous pulling of the floating ball 38 on the connecting block 50 and is rapidly separated from the connecting block 50, and thus the hinge point of the support arm a6 and the connecting block 50 is disconnected.

When the latch 10 on the arm a6 is disengaged from the corresponding connecting block 50, the connecting block 50 which is originally connected with the U-shaped seat 7 on the arm a6 moves upward under the driving of the floating ball 38, and the floating ball 38 drives the two connecting blocks 50 disconnected from the arm a6 to move forward along with flowing water during the vertical upward movement, so that the part of the safety net 33 between the floating ball 38 and the arm B12 is straightened and spread to the free end of the safety net 33 under the action of the flowing water. At the same time, the free end of safety net 33 drives link block 50 connected with arm B12 to rotate around round pin 9 on arm B12, and one end of latch 10 on arm B12 rotates a small angle in round groove a52 on corresponding link block 50 to facilitate the opposite of disengaging opening 72 on link block 50. When the latch 10 of the arm B12 completely faces the release opening 72 of the corresponding connecting block 50, the flowing water drives the connecting block 50 to rapidly release from the latch 10 through the floating ball 38 and the free end of the safety net 33 and disconnects the arm B12 from the connecting block 50.

With the connection of the arm B12 and the corresponding connecting block 50 disconnected, the hanging rod 13 on the U seat 7 at the tail end of the arm B12 is disengaged from the swinging groove A49 on the corresponding arc block 48. The two snap rings 47 nested on the hanging rod 13 are respectively separated from the hanging rod 13 under the action of the corresponding pull ropes 45, and the two warp ropes 41 respectively slide to the middle position of the opening 37 of the safety net 33 under the pulling of the corresponding two elastic ropes 43 instantly, so that more holding points are provided for a drowner.

When the arms B12 are disconnected from the corresponding connecting blocks 50, the whole safety net 33 floats on the water surface, and the opening 37 on the safety net 33 is opposite to the passageway 2 of the hidden culvert 1, so that a drowner climbing the safety net 33 can quickly escape through the opening 37 on the safety net 33 and the passageway 2.

During the floating of the safety net 33 towards the water surface under the action of the floating ball 38, the safety net 33 pulls out the bolts 26 of the two breathing mechanisms 15 simultaneously through the ropes connected with the bolts 26 of the two breathing mechanisms 15, and the closure of the baffle A25 on the breathing mechanism 15 to the corresponding containing sleeve 18 is quickly released. The breathing hose 22 in a coiled state accommodated in the breathing apparatus 15 is pushed out of the accommodating case 18 by the slider a28 in the accommodating case 18 under the action of the corresponding spring a30 and floats on the water surface.

If the worker who is located in the dark culvert 1 can not escape from the dark culvert 1 in time due to reasons such as physical weakness, the breathing hose 22 floating on the water surface can be contained in the mouth for breathing, and the worker who is trapped in the dark culvert 1 can not be drowned due to physical weakness at any moment.

When the shutter B58 opens the corresponding exit opening 72, the nose cone 60 retracts the corresponding slider B61 into the corresponding slot B55, and the spring B63 is further compressed. When the baffle B58 and the fixture block 10 are separated from the connecting block 50, the pressing of the tip cone 60 is released, and the slide block B61 drives the tip cone 60 to be instantly reset under the reset action of the corresponding spring B63. When the spring B63 has a reduced elasticity in the reciprocating use of the present invention, in order to ensure that the baffle B58 does not open the corresponding release opening 72 under the pulling action of the floating ball 38 not submerged under the water, the compression amount of the spring B63 needs to be further compressed and adjusted, and the further compression adjustment flow of the spring B63 is as follows:

and (3) rotating the torsion wheel 69, driving the slide block C64 to further compress the spring B63 through the screw 68 by the torsion wheel 69, and stopping rotating the torsion wheel 69 when the compression elasticity of the spring B63 meets the requirement, so that the compression amount of the spring B63 is adjusted.

In conclusion, the beneficial effects of the invention are as follows: according to the invention, when water expansion does not occur in the hidden culvert 1, garbage carried by water flowing in the hidden culvert 1 can be effectively intercepted, so that a desilting worker in the hidden culvert 1 can effectively clean the garbage in the hidden culvert 1. Meanwhile, the safety net 33 in the state of intercepting the floating garbage on the water surface in the hidden culvert 1 does not form an obstacle to the passing of the desilting workers in the hidden culvert 1.

When the water surface in the culvert 1 rises rapidly, the hinged points of the two arms A6 and the connecting blocks 50 on the safety net 33 are disconnected first under the pulling of all the floating balls 38, and the hinged points of the two arms B12 and the connecting blocks 50 on the safety net 33 are disconnected immediately along with the disconnection of the hinged points of the arms A6 and the connecting blocks 50, so that the safety net 33 floats on the rising water surface around the cross rods 31, and the flowing water which does not flow rapidly forms a barrier. When the desilting person in the hidden culvert 1 is washed to the safety net 33 by the rapidly rising running water, the drowning person can grasp the safety net 33 to fix the body and timely and rapidly escape from the gateway 2 of the hidden culvert 1.

When the hinge point of the connecting block 50 on the supporting arm B12 and the safety net 33 is disconnected, two wires 41 in the opening 37 on the safety net 33 slide to the middle of the opening 37, so that the grabbing probability of a drowning person passing through the safety net 33 on the safety net 33 is improved, and the self-rescue efficiency of the drowning person is improved.

In addition, install two respiratory mechanism 15 on two support columns 3 and can provide oxygen for the drowned person that can not come out in time from the surface of water below, guarantee that the drowned person can not be because of failing to in time flee from secretly containing 1 and lose life.

Claims

1. A safety protection net is characterized in that: the device comprises support columns, a support arm A, a support arm B, a breathing mechanism, a cross rod, a safety net, an opening, a floating ball, weft ropes, warp ropes and connecting blocks, wherein the two support columns are vertically fixed in a hidden culvert outside an entrance and an exit of the hidden culvert; one end of a safety net which is as wide as the entrance and the exit of the hidden culvert is arranged on a cross rod at the top ends of two supporting columns, and the other end of the safety net is provided with a plurality of floating balls which are uniformly distributed along the width direction of the entrance and the exit of the hidden culvert;

a pair of detachable support arms B and a pair of detachable support arms A are arranged on the two support columns from top to bottom; the tail ends of the two support arms A and the two support arms B are respectively hinged with four connecting blocks symmetrically arranged on two sides of the safety net; the hinged point of the safety net with the length larger than the height of the hidden culvert and the support arm A is positioned below the water surface in the hidden culvert, and the two support arms A and the two support arms B prop and stretch the part of the complete net, which is equivalent to the cross section area of the hidden culvert; the hinged point of the support arm A and the connecting block and the hinged point of the support arm B and the connecting block are sequentially disconnected under the pulling of the floating ball with gradually increased buoyancy along with the rising of the liquid level of running water in the hidden culvert;

the middle part of the safety net is provided with an opening which is convenient for people to pass through the hidden culvert and corresponds to the entrance and the exit of the hidden culvert; two weft ropes transversely pulled are symmetrically arranged at the upper end and the lower end in the opening, and two warp ropes which reduce the opening area when the hinge joint of the support arm B and the connecting block is disconnected and are convenient for a drowner moving along with flowing water to grasp are in sliding fit between the two weft ropes left and right;

2. A safety net according to claim 1, characterised in that: the lower end of the support column is in threaded fit with an internal thread sleeve fixed at the bottom of the hidden culvert through a bolt; the two ends of the fixing plate are respectively embedded on the two supporting columns and are fixed at the inlet and the outlet of the culvert through bolts; the cross bar is arranged at the top ends of the two support columns through bolts; the upper end of the safety net is uniformly provided with a plurality of hanging rings which are embedded on the cross rods along the width direction; support arm A and support arm B all carry out demountable installation through the bolt on two support columns.

3. A safety net according to claim 1, characterised in that: the two connecting blocks hinged with the pair of support arms A are respectively arranged in the two notches A at the two sides of the safety net, and the two connecting blocks hinged with the pair of support arms B are respectively arranged in the two notches B at the two sides of the safety net; a ring sleeve is rotationally matched in the ring groove C on the outer side of the connecting block, the ring sleeve is connected with the upper half section of the fracture part of the edge rope on the side of the safety net at the notch A or the notch B, and the fixed block B arranged on the connecting block is connected with the lower half section of the fracture part of the edge rope on the side of the safety net at the notch A or the notch B; the tail ends of the support arm A and the support arm B are both provided with a U seat; two round pins are symmetrically arranged on the inner sides of the two branches of the U-shaped base, and a clamping block is arranged at the tail end of each round pin; two clamping blocks arranged on the same U seat rotate in two circular grooves A in corresponding connecting blocks around the central axis of the circular pin, and the circular pin is matched with a sliding groove A which is arranged on the side wall of each connecting block and communicated with the circular groove A on the corresponding side; and a separation opening for facilitating the separation of the fixture block from the connecting block is formed in the inner wall of the circular groove A.

4. A safety net according to claim 3, characterised in that: a swing groove B is formed in a separation opening of the connecting block arranged in the notch A, and a baffle B for opening and closing the separation opening is hinged in the swing groove B; a sliding groove B is formed in the inner wall of the swinging groove B, a sliding block B and a sliding block C are arranged in the sliding groove B in a sliding mode along the central axis direction of the ring sleeve, and the sliding block C is connected with the sliding block B through a spring B; a tip cone arranged on the end face of the sliding block B is matched with a cone groove on the side wall of the corresponding baffle B; a screw rod which is rotationally matched with the circular groove B on the sliding block C is in threaded fit with the threaded hole on the connecting block; the tail end of the screw rod is provided with a torsion wheel.

5. A safety net according to claim 4, characterised in that: the sliding block B is symmetrically provided with two guide blocks B which respectively slide in two guide grooves B on the inner wall of the sliding groove B; two guide blocks C are symmetrically arranged on the sliding block C and respectively slide in the two guide grooves B; the circular ring arranged on the screw rod rotates in the circular groove D on the inner wall of the circular groove D.

6. A safety net according to claim 1 or 3, characterised in that: an arc block which has the same central axis with the circular groove A is arranged on the connecting block arranged in the gap B, a swing groove A on the inner wall of the arc block is matched with a hanging rod arranged on one corresponding U seat, and two clamping rings are nested on the hanging rod; the two ends of the clamping block are provided with rotating cambered surfaces matched with the corresponding circular grooves A; two ends of the warp ropes are respectively connected with the slip rings nested on the two weft ropes; each warp rope is connected with a fixed block A arranged on the other warp rope side of the safety net through two elastic ropes which are symmetrically distributed; two pull ropes are symmetrically arranged on each warp rope, and the two pull ropes are respectively connected with two clamping rings on the same side by bypassing a traction sleeve fixed on a safety net.

7. A safety net according to claim 1, characterised in that: the breathing mechanism comprises a supporting rod, a containing sleeve, a breathing hose, a filter screen, a sealing cover, a baffle A, a bolt, a clamping plate, a sliding block A and a spring A, wherein the supporting rod with the upper end positioned above the entrance and the exit of the hidden culvert is arranged on a corresponding supporting column through a bolt; the lower end of the supporting rod is provided with an accommodating sleeve communicated with the breathing groove on the supporting rod; a sliding block A slides in the accommodating sleeve, and a spring A for resetting the sliding block A is arranged in the accommodating sleeve; a baffle A for opening and closing the accommodating sleeve is hinged to the opening of the accommodating sleeve, and the baffle A closes the accommodating sleeve through a bolt; a plurality of elastic clamping plates which are uniformly distributed on the plug pins in the circumferential direction are matched with the ring grooves B on the inner walls of the slots on the end surfaces of the accommodating sleeves; the bolt is connected with the two sides of the middle part of the safety net through a rope; a breathing hose is arranged in a breathing groove on the supporting rod, and the wound part of the lower end of the breathing hose is positioned in a space between the sliding block A and the baffle A in the accommodating sleeve; a circular groove A is formed in the notch at the upper end of the breathing groove, and a filter screen connected with the upper end of the breathing hose is installed in the circular groove A; the notch of the ring groove A is provided with a sealing cover for preventing dust from entering.

8. A safety net according to claim 1, characterised in that: the spring A is a compression spring; one end of the spring A is connected with the inner wall of the accommodating sleeve, and the other end of the spring A is connected with the end face of the sliding block A; two guide blocks A are symmetrically arranged on the sliding block A, and the two guide blocks A respectively slide in two guide grooves A on the inner wall of the accommodating sleeve.

9. A safety net according to claim 1, characterised in that: and a hidden culvert water level monitoring acousto-optic early warning device is installed on the support column.