CN115613482A - Protection net device - Google Patents

Protection net device Download PDF

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Publication number
CN115613482A
CN115613482A CN202211300754.XA CN202211300754A CN115613482A CN 115613482 A CN115613482 A CN 115613482A CN 202211300754 A CN202211300754 A CN 202211300754A CN 115613482 A CN115613482 A CN 115613482A
Authority
CN
China
Prior art keywords
rod
clamping
damper
clamping structure
bracing piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211300754.XA
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Chinese (zh)
Inventor
彭晶
于虹
李�昊
张志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Power Research Institute of Yunnan Power Grid Co Ltd
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Electric Power Research Institute of Yunnan Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Electric Power Research Institute of Yunnan Power Grid Co Ltd filed Critical Electric Power Research Institute of Yunnan Power Grid Co Ltd
Priority to CN202211300754.XA priority Critical patent/CN115613482A/en
Publication of CN115613482A publication Critical patent/CN115613482A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
    • E01F7/045Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

The embodiment of the invention discloses a protection net device. This protection net device includes: the dictyosome, first bracing piece, second bracing piece and connecting rod, first bracing piece and the relative interval setting of second bracing piece, connecting rod one end and dictyosome connection, the other end is equipped with the bulb, all be provided with the ball socket recess on first bracing piece and the second bracing piece, the bulb is installed in the ball socket recess, and with the inner wall sliding connection of ball socket recess, the dictyosome is including relative first side and the second side that sets up, the connecting rod is equipped with a plurality ofly, and respectively along the extending direction of first side and the extending direction interval distribution of second side, the ball socket recess is provided with a plurality ofly at the extending direction of first bracing piece and the extending direction interval of second bracing piece respectively, and set up with the bulb one-to-one of each connecting rod respectively, in order to install the dictyosome between first bracing piece and second bracing piece, the dictyosome is when receiving the impact, the bulb can slide in the ball socket recess and clear up the impact force, better guard action has been played to electric wire netting engineering.

Description

Protection net device
Technical Field
The invention relates to the technical field of protection devices, in particular to a protection net device.
Background
The whole of the substation and the transmission and distribution line of various voltages in the power system is called as a power grid. Part of power grid projects built in areas with abundant rainfall and dense mountain groups are often threatened by geological disasters such as mountain landslides, debris flows and the like under the conditions of complex landforms, rainfall, structures, stratums, altitudes and the like. As a typical linear project, once suffering from geological disasters, the power grid project causes serious losses, and a large amount of manpower, material resources and financial resources are required to be invested every year to perform disaster prevention, reduction and relief work on the geological disasters.
At present, the main measures corresponding to geological disasters are prediction and prevention before the disaster and emergency repair after the disaster. The existing counter measures cannot play a good protection role in power grid engineering in geological disasters.
Disclosure of Invention
The invention aims to provide a protection net device, and aims to solve the problem that the existing countermeasure can not play a good protection role in the power grid engineering in the geological disaster.
In order to solve the above technical problem, the present invention provides a protection net device, including: the net body, the first supporting rod, the second supporting rod and the connecting rod are arranged at intervals, one end of the connecting rod is connected with the net body, the other end of the connecting rod is provided with a ball head, ball socket grooves are formed in the first supporting rod and the second supporting rod, and the ball heads are installed in the ball socket grooves and are in sliding connection with the inner walls of the ball socket grooves;
the dictyosome is including relative first side and the second side that sets up, the connecting rod is equipped with a plurality ofly, and follows respectively the extending direction of first side with the extending direction interval distribution of second side, ball socket recess is in respectively the extending direction of first bracing piece with the extending direction interval of second bracing piece is provided with a plurality ofly, and respectively with each the bulb one-to-one setting of connecting rod, in order to incite somebody to action the dictyosome install in first bracing piece with between the second bracing piece.
In one embodiment, the connecting rod includes a first rod, a second rod, and an elastic member elastically connecting the first rod and the second rod, the ball is disposed on the first rod, and the second rod is connected to the net body.
In one embodiment, the first rod body is provided with a piston cavity, the second rod body is provided with a piston head, the piston head is arranged in the piston cavity and is in sliding connection with the inner wall of the piston cavity, and the elastic piece is arranged in the piston cavity and is elastically connected with the inner wall of the piston cavity and the piston head so as to drive the first rod body and the second rod body to approach each other.
In one embodiment, the second rod body is provided with a first clamping structure, the net body is provided with a second clamping structure, and the first clamping structure and the second clamping structure are detachably connected.
In one embodiment, the second clamping structures are provided with a plurality of second clamping structures, and the plurality of second clamping structures are respectively distributed at intervals along the extending direction of the first side edge and the extending direction of the second side edge and respectively arranged in one-to-one correspondence with the first clamping structures.
In one embodiment, the first clamping structure is provided with an insertion groove, the inner wall of the insertion groove is provided with a clamping groove, the second clamping structure is provided with a clamping protrusion, the second clamping structure can be inserted into the insertion groove and is matched with the groove wall of the clamping groove through the clamping protrusion, so that the first clamping structure and the second clamping structure can be detachably connected.
In one embodiment, the second clamping structure is provided with a plurality of elastic arms, the elastic arms are circumferentially arranged on the second clamping structure at intervals, and the clamping protrusions are arranged on the elastic arms.
In one embodiment, the protection net device further comprises a rotary damping component, the net body further comprises a third side edge close to the ground, the rotary damping component is arranged on the third side edge, and two ends of the rotary damping component are respectively connected with the first supporting rod and the second supporting rod.
In one embodiment, the rotary damping assembly includes a rotary drum, a first damper and a second damper, a first insertion shaft is disposed on the first support rod, a second insertion shaft is disposed on the second support rod, the first insertion shaft and the second insertion shaft are disposed correspondingly, the first damper and the second damper are disposed on an inner wall of the rotary drum and are respectively disposed at two ends of the rotary drum, and the first damper and the second damper are respectively connected to the first insertion shaft and the second insertion shaft.
In one embodiment, the first damper and the second damper are both bidirectional rotary dampers.
The embodiment of the invention has the following beneficial effects:
according to the protective net device, the first support rod and the second support rod are arranged at intervals, one end of each connecting rod is connected with the net body, the other end of each connecting rod is provided with the ball socket, the ball sockets are arranged on the first support rod and the second support rod and are connected with the inner walls of the ball socket in a sliding mode, the connecting rods are provided with a plurality of ball sockets, the ball socket grooves are respectively arranged in the extending direction of the first support rod and the extending direction of the second support rod at intervals and are respectively arranged corresponding to the ball sockets of the connecting rods one by one, so that the net body is arranged between the first support rod and the second support rod, the support rods are inserted near a power grid project, the net body can block dangerous rock falling rocks generated in geological disasters such as landslide and debris flow, the net body deforms when being impacted by the dangerous rock falling rocks, the ball sockets can slide along with the deformation of the net body in the ball socket grooves, the stress direction of the net body is changed to buffer, and part of impact force is eliminated, and a good protective effect is achieved for the power grid project.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic view of an embodiment protective grid assembly.
Fig. 2 is a schematic view of a connecting rod and a ball and socket groove in the protective net apparatus shown in fig. 1.
Fig. 3 is a schematic view of a first clamping structure and a second clamping structure in the protection net device shown in fig. 1.
Reference numbers:
110. a first support bar; 111. a first plug shaft; 120. a second support bar; 121. a second plug shaft; 130. a ball and socket recess; 200. a net body; 210. a second clamping structure; 211. clamping the bulges; 212. a resilient arm; 300. a connecting rod; 310. a first rod body; 311. a ball head; 312. a piston cavity; 320. a second rod body; 321. a piston head; 322. a first clamping structure; 330. an elastic member; 400. a rotational damping assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature described. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and 2, a protection net device according to an embodiment includes a net body 200, a first support rod 110, a second support rod 120, and a connection rod 300, where the first support rod 110 and the second support rod 120 are disposed at an interval, one end of the connection rod 300 is connected to the net body 200, and the other end is provided with a ball 311, ball-and-socket grooves 130 are disposed on the first support rod 110 and the second support rod 120, the ball 311 is mounted in the ball-and-socket groove 130 and is slidably connected to an inner wall of the ball-and-socket groove 130, the net body 200 includes a first side edge and a second side edge disposed at an interval, the connection rods 300 are disposed at a plurality of intervals and are respectively distributed along an extending direction of the first side edge and an extending direction of the second side edge, the ball-and-socket grooves 130 are respectively disposed at intervals in the extending direction of the first support rod 110 and the extending direction of the second support rod 120 and are respectively disposed in one-to-one correspondence with the ball 311 of each connection rod 300, so that the net body 200 is mounted between the first support rod 110 and the second support rod 120.
In the embodiment, the ball socket 130 is formed by the first support rod 110 and the second support rod 120 with concave surfaces, and the space in the ball socket 130 is a sphere that is intersected by a plane and is between a semi-sphere and a sphere, so as to prevent the ball 311 from separating from the ball socket 130. The ball 311 is in clearance fit with the inner wall of the socket groove, so that the ball 311 can rotate in the ball socket groove 130 to change the connection angle between the connection rod 300 and the first support rod 110, or the connection rod 300 can rotate around the extension direction thereof, thereby basically ensuring six degrees of freedom of the connection rod 300.
The net body 200 is deformed when being impacted by dangerous falling rocks, the ball head 311 can slide along with the deformation of the net body 200 in the ball socket groove 130, so that the connecting rod 300 is driven to rotate in multiple directions, the stress direction of the net body 200 is changed to buffer, partial impact force is eliminated, the degree of freedom is released simultaneously, the damage caused by the blocking of a protection net device is avoided, and a better protection effect is achieved on power grid engineering. In specific work, the moving range of the ball 311 can be changed by changing the area or the shape of the notch of the ball socket groove 130, so that power grid engineering under different environments can be protected in a targeted manner.
Meanwhile, the notches of the plurality of ball-and-socket grooves 130 disposed on the first support bar 110 should face in the same direction, and the intervals between two adjacent ball-and-socket grooves 130 are consistent, so that the stress of the protection net device is uniform. The plurality of ball and socket grooves 130 of the second support bar 120 are arranged in the same manner as the plurality of ball and socket grooves 130 of the first support bar 110. The ball grooves 130 on the first support bar 110 and the ball grooves 130 on the second support bar 120 are the same in number and are arranged in a one-to-one correspondence. The protection net device has better impact resistance and can resist falling rock impact of a certain scale.
Generally, the geological disasters threatening the power grid engineering are landslide, debris flow, dangerous rock falling, strong uneven settlement and the like, and the landslide, the debris flow and the dangerous rock falling can be protected by the protection net device. In specific work, the protection net device is arranged between a power grid project and a hillside to block dangerous rock falling rocks generated by geological disasters. If the power grid project is surrounded by a plurality of mountains, the number of protection net devices is increased, and the protection net devices are installed around the power grid project according to the extending range of the mountains so as to protect the mountains from a plurality of directions. The first support bar 110 and the second support bar 120 should be deeply buried in the installation surface to provide support for the net body 200 and enhance the shock resistance of the protection net device. The installation surface refers to the natural environment surface between the power grid project and a hillside, and also refers to an artificially constructed foundation, a reinforcing layer and the like. The first support bar 110 and the second support bar 120 should be parallel to each other and maintain the same height. The installation angles between the first and second support bars 110 and 120 and the installation surface are adjusted according to the circumstances. The first support bar 110 and the second support bar 120 are installed such that the opening of the ball and socket groove 130 faces the direction of the power grid work. The net body 200 can be a diamond-shaped wire rope net, an annular net, a wire grid net, etc., and is selected according to actual conditions in specific work.
In another embodiment, the protection net device further includes a third support bar, two ends of the third support bar are respectively connected to the top ends of the first support bar 110 and the second support bar 120, and a plurality of ball-and-socket grooves 130 are formed in the third support bar at intervals along the extending direction of the third support bar. The net body 200 includes a fourth side edge disposed between the first side edge and the second side edge, and a plurality of connecting rods 300 are disposed on the fourth side edge at intervals along the extending direction thereof and are disposed in one-to-one correspondence with the ball-and-socket grooves 130 disposed on the third supporting rod. Through setting up the third bracing piece to be connected with dictyosome 200, can strengthen the stability and the shock resistance of protection net device, play better guard action to the electric wire netting engineering.
In an embodiment, referring to fig. 1 and fig. 2, the connecting rod 300 includes a first rod 310, a second rod 320, and an elastic member 330, the elastic member 330 elastically connects the first rod 310 and the second rod 320, the ball 311 is disposed on the first rod 310, and the second rod 320 is connected to the net body 200.
In this embodiment, when the net body 200 is impacted by dangerous falling rocks, the elastic member 330 can elastically deform to buffer the impact on the net body 200, so as to prevent the protection net device from being damaged due to an excessive impact force, reduce the abrasion of the net body 200 caused by long-term impact, and protect the power grid project well.
In an embodiment, referring to fig. 2, the first rod 310 has a piston cavity 312, the second rod 320 has a piston head 321, the piston head 321 is disposed in the piston cavity 312 and slidably connected to an inner wall of the piston cavity 312, and the elastic element 330 is disposed in the piston cavity 312 and elastically connected to the inner wall of the piston cavity 312 and the piston head 321, so as to drive the first rod 310 and the second rod 320 to approach each other.
In this embodiment, the first rod body 310 and the second rod body 320 are matched with each other through the piston cavity 312 and the piston head 321, so that the stretching length of the connecting rod 300 when the connecting rod is under tension does not exceed the length of the piston cavity 312, and the connecting rod 300 is prevented from being stretched too long, so that the net body 200 cannot block the dangerous rockfall.
In the embodiment, the elastic element 330 is disposed in the piston cavity 312 and sleeved on the second rod 320, when the connecting rod 300 is pulled, two ends of the elastic element 330 respectively elastically abut against the piston head 321 and the inner wall of the piston cavity 312, and the elastic element 330 is compressed and deformed. In another embodiment, the elastic member 330 is disposed at one end of the second rod 320 along the extending direction of the second rod 320, and elastically connects the inner wall of the piston cavity 312 and the piston head 321, and when the connecting rod 300 is pulled, the elastic member 330 is deformed.
In an embodiment, with continued reference to fig. 1 and fig. 3, the second rod 320 has a first fastening structure 322, the net body 200 has a second fastening structure 210, and the first fastening structure 322 is detachably connected to the second fastening structure 210. In this embodiment, the net body 200 and the connecting rod 300 are detachably connected through the first clamping structure 322 and the second clamping structure 210, so that the net body 200 is convenient to install and simple to maintain.
In an embodiment, referring to fig. 1 and fig. 3, the second clamping structures 210 are provided in plural, and the plural second clamping structures 210 are respectively distributed at intervals along the extending direction of the first side edge and the extending direction of the second side edge, and are respectively arranged corresponding to the first clamping structures 322 one by one.
In this embodiment, the interval between two adjacent second clamping structures 210 is the same and equal to the interval between two adjacent ball sockets 130, so that the stress on the protection net device is uniform. The second clamping structures 210 on the first side and the second side have the same number and are arranged in a one-to-one correspondence.
In an embodiment, referring to fig. 3, an insertion groove is disposed on the first clamping structure 322, a clamping groove is disposed on an inner wall of the insertion groove, a clamping protrusion 211 is disposed on the second clamping structure 210, and the second clamping structure 210 can be inserted into the insertion groove and is matched with a groove wall of the clamping groove through the clamping protrusion 211, so as to detachably connect the first clamping structure 322 and the second clamping structure 210.
In the specific work, when the net body 200 is installed, the second clamping structure 210 is inserted into the insertion groove, and the clamping protrusions 211 slide into the clamping grooves, so that the quick plugging and unplugging installation of the net body 200 is realized. When the connecting rod 300 receives the pulling force, the clamping protrusion 211 can abut against the wall of the clamping groove to prevent the second clamping structure 210 from separating from the insertion groove, and the power grid engineering is well protected.
In an embodiment, referring to fig. 3, the second engaging structure 210 is provided with a plurality of elastic arms 212, the elastic arms 212 are circumferentially spaced from the second engaging structure 210, and the engaging protrusions 211 are disposed on the elastic arms 212.
In this embodiment, the plurality of elastic arms 212 are circumferentially spaced to form a gap between two adjacent elastic arms 212, and when the net body 200 is installed, each elastic arm 212 is pressed to make each clamping protrusion 211 approach each other, so that the second clamping structure 210 can be conveniently inserted into the insertion slot. In the present embodiment, there are two resilient arms 212, however, in other embodiments, the number of resilient arms 212 may be other.
In an embodiment, referring to fig. 1, the protection net device further includes a rotation damping element 400, the net body 200 further includes a third side near the ground, the rotation damping element 400 is disposed on the third side, and two ends of the rotation damping element 400 are respectively connected to the first support rod 110 and the second support rod 120.
In this embodiment, the rotary damping component 400 is disposed on the third side near the ground, and two ends of the rotary damping component are respectively connected to the first supporting rod 110 and the second supporting rod 120, so as to limit the deformation degree of the third side when the net body 200 is impacted, and prevent a large neutral position from being generated between the third side and the ground, so as to provide a better protection effect for the power grid project. Further, when the net body 200 is impacted and deformed, the portion of the net body 200 above the third side rotates around the third side due to the restriction of the rotation damping member 400, and generates a pulling force on the third side. The rotary damping assembly 400 can buffer the tension applied to the third side, so that the protection net device is prevented from being damaged due to overlarge impact force applied to the protection net device, and a good protection effect is achieved on a power grid project.
In another embodiment, the protection net device comprises two rotation damping assemblies 400, the two rotation damping assemblies 400 are respectively disposed on a third side of the net body 200 close to the ground and a fourth side of the net body 200 far from the ground, and both ends of the rotation damping assemblies 400 are respectively connected with the first support bar 110 and the second support bar 120.
In an embodiment, referring to fig. 1, the rotation damping assembly 400 includes a rotating drum, a first damper and a second damper, the first support rod 110 is provided with a first plug-in shaft 111, the second support rod 120 is provided with a second plug-in shaft 121, the first plug-in shaft 111 and the second plug-in shaft 121 are correspondingly disposed, the first damper and the second damper are disposed on an inner wall of the rotating drum and are respectively disposed at two ends of the rotating drum, and the first damper and the second damper are respectively connected to the first plug-in shaft 111 and the second plug-in shaft 121.
In this embodiment, the first damper and the second damper are respectively disposed at two ends of the drum to enhance the impact resistance of the protection net device. When the net body 200 is impacted, the third side is stressed by tension to drive the rotary drum to rotate, the first damper and the second damper can limit the rotation speed of the rotary drum so as to buffer the tension stressed by the third side, the impact resistance of the protection net device is enhanced, and a good protection effect is achieved on a power grid project.
The first damper and the second damper are identical in structure and respectively comprise an outer shell and an inner core, the outer shell is rotatably connected with the inner core, a damping part is arranged between the outer shell and the inner core, and the damping part can generate resistance when the outer shell or the inner core rotates so as to increase torque and reduce rotating speed. In this embodiment, the outer shells of the first damper and the second damper are connected to the inner wall of the rotating drum, and the inner cores of the first damper and the second damper are connected to the first plug-in shaft 111 and the second plug-in shaft 121, respectively, so as to limit the rotating speed of the rotating drum, enhance the impact resistance of the protection net device, and provide a good protection effect for the power grid engineering.
In the specific work, the first support rod 110 and the second support rod 120 are embedded, the first damper and the second damper are respectively connected with the first plug-in shaft 111 and the second plug-in shaft 121, and then the second clamping structure 210 is inserted into the first clamping structure 322, so that the installation of the protection net device can be completed.
In one embodiment, the first damper and the second damper are both bi-directional rotary dampers. In this embodiment, the damping portion of first attenuator and second attenuator is the damping chamber that inside packing has damping fat, and no matter rotary drum clockwise rotation or anticlockwise rotation, first attenuator and second attenuator can both restrict rotational speed to the flexibility of reinforcing protection net device plays better guard action to the electric wire netting engineering.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims (10)

1. A protective grid assembly, comprising: the net body, the first supporting rod, the second supporting rod and the connecting rod are arranged at intervals, one end of the connecting rod is connected with the net body, the other end of the connecting rod is provided with a ball head, ball socket grooves are formed in the first supporting rod and the second supporting rod, and the ball heads are installed in the ball socket grooves and are in sliding connection with the inner walls of the ball socket grooves;
the dictyosome is including relative first side and the second side that sets up, the connecting rod is equipped with a plurality ofly, and follows respectively the extending direction of first side with the extending direction interval distribution of second side, ball socket recess is in respectively the extending direction of first bracing piece with the extending direction interval of second bracing piece is provided with a plurality ofly, and respectively with each the bulb one-to-one setting of connecting rod, in order to incite somebody to action the dictyosome install in first bracing piece with between the second bracing piece.
2. The device as claimed in claim 1, wherein the connecting rod comprises a first rod, a second rod and an elastic member, the elastic member elastically connects the first rod and the second rod, the ball is disposed on the first rod, and the second rod is connected to the net body.
3. The protection net device according to claim 2, wherein the first rod is provided with a piston cavity, the second rod is provided with a piston head, the piston head is arranged in the piston cavity and slidably connected with an inner wall of the piston cavity, and the elastic member is arranged in the piston cavity and elastically connects the inner wall of the piston cavity and the piston head so as to drive the first rod and the second rod to approach each other.
4. The protection net device of claim 2, wherein the second rod body is provided with a first clamping structure, the net body is provided with a second clamping structure, and the first clamping structure and the second clamping structure are detachably connected.
5. The protection net device according to claim 4, wherein the second clamping structures are provided in plurality, and the plurality of second clamping structures are respectively distributed at intervals along the extending direction of the first side edge and the extending direction of the second side edge and respectively arranged in one-to-one correspondence with the first clamping structures.
6. The protective screen device according to claim 4, wherein the first clamping structure is provided with an insertion groove, the inner wall of the insertion groove is provided with a clamping groove, the second clamping structure is provided with a clamping protrusion, the second clamping structure can be inserted into the insertion groove and is matched with the groove wall of the clamping groove through the clamping protrusion, so that the first clamping structure and the second clamping structure can be detachably connected.
7. The protective net device according to claim 6, wherein a plurality of elastic arms are arranged on the second clamping structure, the plurality of elastic arms are circumferentially arranged on the second clamping structure at intervals, and the clamping protrusions are arranged on the elastic arms.
8. The protective net device according to claim 1, further comprising a rotary damping assembly, wherein the net body further comprises a third side near the ground, the rotary damping assembly is disposed on the third side, and two ends of the rotary damping assembly are respectively connected to the first support rod and the second support rod.
9. The apparatus according to claim 8, wherein the rotary damping assembly includes a rotary drum, a first damper and a second damper, the first support rod is provided with a first plug shaft, the second support rod is provided with a second plug shaft, the first plug shaft and the second plug shaft are correspondingly disposed, the first damper and the second damper are disposed on an inner wall of the rotary drum and are respectively disposed at two ends of the rotary drum, and the first damper and the second damper are respectively connected to the first plug shaft and the second plug shaft.
10. The protective grid assembly of claim 9 wherein the first damper and the second damper are both bi-directional rotary dampers.
CN202211300754.XA 2022-10-24 2022-10-24 Protection net device Pending CN115613482A (en)

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CN202211300754.XA CN115613482A (en) 2022-10-24 2022-10-24 Protection net device

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KR101866432B1 (en) * 2017-11-03 2018-06-11 임춘례 Wire rope prevention buffering type fixing device for preventing rockfall and method of constructing a fall-prevention prevention network using the same
CN208564272U (en) * 2018-06-11 2019-03-01 中山启家移门五金科技有限公司 Bidirectional rotary dampers
CN209397521U (en) * 2019-01-13 2019-09-17 李淑芳 A kind of Traffic Engineering Construction wind-proof dust-suppression net
CN210888313U (en) * 2019-08-19 2020-06-30 段佳阳 Novel pumped storage is anticollision barrier for power station
CN111172905A (en) * 2020-02-19 2020-05-19 刘山平 Damper of side slope falling rock impact resistance protective net
CN111236276A (en) * 2020-03-09 2020-06-05 中铁二院工程集团有限责任公司 Protective structure for dangerous rock falling of high and steep side slope of tunnel and construction method
CN213625291U (en) * 2020-09-25 2021-07-06 李中原 Rockfall protective net for building
CN213709240U (en) * 2020-11-13 2021-07-16 安平县祥明网业制品有限公司 Ramp mud-rock flow protection network for preventing soil erosion and water loss
US20220178093A1 (en) * 2020-12-09 2022-06-09 Southwest Jiaotong University Throwing Toughness Buffer Mesh Unit for Rockfall Protection and Design Method of Critical Throwing Angle Thereof
CN214613669U (en) * 2021-01-07 2021-11-05 兖州中材建设有限公司 Flexible passive protection device for SNS (social networking service)
CN215443477U (en) * 2021-07-19 2022-01-07 广东康润达建设工程有限公司 House construction is with preventing wind protection network

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