Spraying treatment device for fireproof coating on surface of electric wire cable bridge
Technical Field
The invention relates to the technical field of electric wire cable bridges, in particular to a spraying treatment device for a fireproof coating on the surface of an electric wire cable bridge
Background
With the rapid placement of economic science and technology in China developed, the construction of infrastructure in China is more and more perfect, a bridge is often needed in the indoor wiring process, and a cable bridge is divided into structures such as a groove type structure, a tray type structure, a ladder type structure and a grid type structure and consists of a support, a supporting arm, an installation accessory and the like. Can independently erect, also can lay on various building (structure) and piping lane support, embody simple structure, handsome in appearance, dispose characteristics such as nimble and easy maintenance, extensive application is in present building, need carry out surperficial fire prevention coating preparation spraying to the crane span structure in the installation of crane span structure or after the installation, traditional mode adopts the manual work to spray paint, and the distance that sprays paint has the distance restriction, and often lead to the paint film on crane span structure surface inhomogeneous when reaching the crane span structure turning, and do not carry out a protection to the hole when reaching the hole of crane span structure junction, and need quantitative when the fire prevention coating spraying to add the coating and stir, need the manual work to operate, lead to work efficiency lower.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a spraying treatment device for a fireproof coating on the surface of a cable bridge, which can limit the spraying distance and adjust the spraying distance in real time, make a paint film at the corner of the bridge more uniform through real-time adjustment, protect holes in holes at the joint of the bridge, and stir the quantitative coating during spraying of the fireproof coating, thereby greatly saving labor and improving working efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the spraying treatment device for the fireproof coating on the surface of the electric wire cable bridge comprises a moving mechanism, wherein a lifting mechanism is arranged on the upper side of the moving mechanism, one side of the lifting mechanism is fixedly connected with a climbing stair, a spray gun mechanism is arranged on one side, far away from the moving mechanism, of the lifting mechanism, and a feeding mechanism is arranged on one side, facing the lifting mechanism, of the moving mechanism and beside the lifting mechanism.
Preferably, moving mechanism is including removing the casing, remove the casing and arrange lifting mechanism in and keep away from one side of spray gun mechanism, one side that lifting mechanism was kept away from to remove the casing is equipped with the crawler wheel of symmetry, every the both sides of crawler wheel and be equipped with the race track in removing the casing, race track internal rotation connects track axle and crawler wheel fixed connection, one side that the track axle kept away from the crawler wheel is equipped with output shaft fixed connection of track motor and track motor on the track axle. The back of one side of the track shaft is in transmission connection with the rest of the track motor and is linked through the track.
Preferably, lift mechanism is including lifting the fixed block, lift fixed block fixed connection and remove one side of casing towards spray gun mechanism, lift the fixed block and keep away from one side fixed connection lifting rod of reinforced mechanism, one side fixed connection rail of removing the casing is kept away from to the lifting rod, the rail is kept away from one side of lifting rod and is put the rifle fixed block in one side fixed connection of rail, put one side center fixed connection weight hydraulic stem that the fence was kept away from to the rifle fixed block, the weight hydraulic stem is kept away from and is equipped with on the both sides fixed block of rail and presss from both sides tight movable groove, every it presss from both sides tight hydraulic stem, every to press from both sides tight movable groove towards the one deck fixed connection of weight hydraulic stem press from both sides tight connecting pipe of fixed connection between tight hydraulic stem and the weight hydraulic stem.
Preferably, the feeding mechanism comprises a feeding shell, the feeding shell is fixedly connected to one side, facing the lifting fixed block, of the movable shell, a feeding box is fixedly connected to one side, away from the movable shell, of the feeding shell, a piston machine is fixedly connected to one side, facing the feeding box, of the feeding shell, and an air inlet is formed in one side, close to the feeding shell, of the piston machine; a stirring tank is arranged in the feeding shell, a spiral feeding shaft is arranged in the stirring tank, rotating tanks are arranged on two sides of the spiral feeding shaft, the spiral feeding shaft is rotationally connected with the spiral shafts in the tank, each spiral shaft is fixedly connected with the spiral feeding shaft, a feeding pipe is arranged between the spiral feeding shaft and the feeding box, a feeding control tank is arranged on one side of the spiral shaft, which is far away from the spiral feeding shaft and close to the feeding box, the feeding control tank is rotationally connected with a single gear and is fixedly connected with the spiral shaft, a feeding hydraulic rod is fixedly connected on one side of the feeding control tank, which is close to the feeding box, and the feeding hydraulic rod faces the single gear, one side of the feeding pipe, which is close to the feeding hydraulic rod, is fixedly connected with a blocking hydraulic rod, when the screw shaft is opened, articles in the feeding box can be conveyed onto the screw feeding shaft through the feeding pipe, an air outlet pipe is arranged on one side of the screw shaft, which is far away from the screw feeding shaft and is close to the piston machine, the air outlet pipe is fixedly connected with the piston machine, an impeller is rotatably connected in the air outlet pipe and is fixedly connected with the screw shaft, one side of the impeller, which is far away from the piston machine, is provided with an air pipe branch; and one side of the fence, which is close to the piston machine, is provided with a paint conveying pipe, and the air pipe branch is connected to one side of the paint conveying pipe, which is close to the spiral feeding shaft.
Preferably, the spray gun mechanism includes the body of a gun, weight hydraulic stem upside and weight hydraulic stem are the monomer design in being arranged in to the body of a gun, the weight hydraulic stem is equipped with switch slot and one side fixed connection spray gun switch of inslot towards the weight hydraulic stem towards one side of weight hydraulic stem, the body of a gun is towards one side fixed connection flexible pipe of the flexible pipe of lacquer and the flexible pipe fixed connection of lacquer of piston machine, the body of a gun is equipped with first lacquer connecting pipe and first lacquer connecting pipe fixed connection on the flexible pipe of lacquer, first lacquer connecting pipe one side is equipped with the air connecting pipe in the body of a gun, one side fixed connection spray gun fixed block that the body of a gun kept away from the rail is equipped with and keeps off the hole part, the spacing fixed block of both sides fixed connection of spray gun fixed block, the body is kept away from to spacing fixed block and is equipped with the compact heap towards spacing fixed block central point symmetry, every the compact heap is equipped with the removal conveyer belt towards spacing central point, every the compact heap is equipped with spout and inslot sliding connection adjustment slider towards the one deck of spacing fixed block, every spacing fixed block fixed connection adjustment spring towards spacing fixed block. The center of one side, facing the pressing block, of the limiting fixing block is fixedly connected with a heating sheet; the improved spray gun comprises a spray gun body, a spray gun fixing block, a spray gun connecting pipe, a first paint connecting pipe, a second paint connecting pipe, a control hydraulic rod, a first paint connecting pipe, a second paint connecting pipe, a spray gun fixing block, a first paint connecting pipe, a second paint connecting pipe, a control hydraulic rod and a control hydraulic rod, wherein the spray gun fixing block is far away from one side of the spray gun fixing block, the first paint connecting pipe is arranged on one side of the spray gun fixing block, the second paint connecting pipe and the second paint connecting pipe penetrate through the spray gun fixing block and the spray gun fixing block to be connected with the first paint connecting pipe, the two sides of the spray gun head casing are fixedly connected with the control hydraulic rod, and the adjustment hydraulic rod is far away from one side of the spray gun fixing block.
Preferably, keep off the hole part including keeping off the hole casing, keep off one side that the rail was kept away from to hole casing fixed connection at the spray gun fixed block, keep off one side that is equipped with sliding tray and sliding tray in the hole casing and keeps away from the body of a gun for the opening design, the sliding tray is close to fixed connection fixed magnet on one side of the opening, keep away from fixed magnet one side sliding connection control magnet in the sliding tray, the sliding tray is close to fixed magnet one side sliding connection first magnetic stripe, first magnetic stripe is towards control magnet one side fixed connection soft baffle and control magnet fixed connection, the sliding tray is equipped with the air inlet spout towards spray gun fixed block one side, sliding connection air inlet slider and control magnet fixed connection in the air inlet spout, the air inlet spout is close to fixed magnet one side fixed connection air inlet and keeps off the hole air inlet and is connected to the gas connecting pipe, one side fixed connection that keeps off the hole air inlet kept away from the air inlet slider promotes the spring, be equipped with the air vent in the air inlet slider and say that fixed connection air inlet telescopic link that admits air, be equipped with rubber trachea and rubber trachea in the air inlet slider passes control magnet and admits air and connects in the soft baffle towards a plurality of air spout one side fixed connection.
Has the advantages that:
the spraying treatment device for the fireproof coating on the surface of the electric wire cable bridge provided by the invention can be used for conveying workers to a specified height through the lifting mechanism, controlling the staged feeding of the paint spraying and feeding mechanism and controlling the conveying of the fireproof paint into the second paint connecting pipe through the spray gun switch, controlling the distance and the detection of a spray gun head on a gun head shell to the surface of the bridge through the contact of the control hydraulic rod, controlling the vertical distance of the spray gun head through moving the conveying belt, and controlling the hole blocking component to block a hole when the hole is met.
The spraying treatment device for the fireproof coating on the surface of the electric wire cable bridge provided by the invention can realize the limitation and real-time adjustment of the spraying distance, the paint film at the corner of the bridge is more uniform through real-time adjustment, the hole is protected when the hole is formed at the joint of the bridge, and the quantitative coating is stirred when the fireproof coating is sprayed, so that the labor is greatly saved, and the working efficiency is improved.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 isbase:Sub>A sectional view taken along line A-A of FIG. 4;
FIG. 6 is a sectional view taken in the direction F-F in FIG. 4;
FIG. 7 is a sectional view taken along line B-B of FIG. 2;
FIG. 8 is an enlarged view of a portion of FIG. 7 at Y;
FIG. 9 is an enlarged view of a portion of FIG. 8 at P;
FIG. 10 is a sectional view taken along line E-E in FIG. 3;
FIG. 11 is a sectional view taken along line C-C of FIG. 3;
FIG. 12 is a sectional view taken along line G-G of FIG. 2;
FIG. 13 is an enlarged view of a portion of FIG. 12 at U;
fig. 14 is a cross-sectional view of the single gear arrangement of fig. 12.
<xnotran> , 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78. </xnotran>
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
In the description of the present invention, it should be noted that the terms "inside", "below", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
With reference to fig. 1-14, a spraying treatment device for a fireproof coating on a surface of an electric wire cable bridge comprises a moving mechanism 13, wherein a lifting mechanism 10 is arranged on the upper side of the moving mechanism 13, a climbing stair 11 is fixedly connected to one side of the lifting mechanism 10, a spray gun mechanism 14 is arranged on one side of the lifting mechanism 10 far away from the moving mechanism 13, and a feeding mechanism 12 is arranged on one side of the moving mechanism 13 facing the lifting mechanism 10 and beside the lifting mechanism 10.
Further, the moving mechanism 13 includes a moving housing 22, the moving housing 22 is disposed on a side of the lifting mechanism 10 away from the spray gun mechanism 14, symmetrical track wheels 23 are disposed on a side of the moving housing 22 away from the lifting mechanism 10, two sides of each track wheel 23 are provided with track grooves 26 in the moving housing 22, the track grooves 26 are rotatably connected with track shafts 24, the track shafts 24 are fixedly connected with the track wheels 23, one side of the track shafts 24 away from the track wheels 23 is provided with track motors 25, and output shafts of the track motors 25 are fixedly connected to the track shafts 24. One side of the track shaft 24 is connected with a track motor 25 in a transmission way, and the other side of the track shaft is linked through a track.
Further, the lifting mechanism 10 includes a lifting fixing block 16, the lifting fixing block 16 is fixedly connected to one side of the movable housing 22 facing the spray gun mechanism 14, one side of the lifting fixing block 16 far away from the feeding mechanism 12 is fixedly connected to a lifting rod 15, one side of the lifting rod 15 far away from the movable housing 22 is fixedly connected to a rail 17, one side of the rail 17 far away from the lifting rod 15 is fixedly connected to a gun placing fixing block 18 at one side of the rail 17, one side center of the gun placing fixing block 18 far away from the rail 17 is fixedly connected to a weight hydraulic rod 19, clamping movable grooves 27 are formed in two side fixing blocks of the weight hydraulic rod 19 far away from the rail 17, each clamping movable groove 27 faces one layer of the weight hydraulic rod 19 and is fixedly connected to a clamping hydraulic rod 20, and a clamping connecting pipe 21 is fixedly connected between each clamping hydraulic rod 20 and the weight hydraulic rod 19.
Further, the feeding mechanism 12 comprises a feeding shell 28, the feeding shell 28 is fixedly connected to one side of the moving shell 22 facing the lifting fixed block 16, a feeding box 29 is fixedly connected to one side of the feeding shell 28 away from the moving shell 22, a piston machine 30 is fixedly connected to one side of the feeding shell 28 facing the feeding box 29, and an air inlet 31 is formed in one side of the piston machine 30 close to the feeding shell 28; a stirring groove is formed in the feeding shell 28, a spiral feeding shaft 37 is arranged in the groove, two sides of the spiral feeding shaft 37 are provided with rotating grooves, the spiral feeding shafts are rotatably connected with spiral shafts 36 in the groove, each spiral shaft 36 is fixedly connected to the spiral feeding shaft 37, a feeding pipe 35 is arranged between the spiral feeding shaft 37 and the feeding box 29, a feeding control groove 33 is arranged on one side, away from the spiral feeding shaft 37 and close to the feeding box 29, of the spiral shaft 36, a single gear 34 is rotatably connected in the feeding control groove 33, the single gear 34 is fixedly connected with the spiral shaft 36, one side, close to the feeding box 29, of the feeding control groove 33 is fixedly connected with a feeding hydraulic rod 32, the hydraulic rod of the feeding hydraulic rod 32 faces the single gear 34, one side, close to the feeding hydraulic rod 32, of the feeding pipe 35 is fixedly connected with a blocking hydraulic rod 46, when the feeding box 29 is opened, articles in the feeding box 29 can pass through the feeding pipe 35 to the spiral feeding shaft 37, one side, away from the spiral feeding shaft 37 and one side, close to the piston machine 30, of the spiral shaft 36 is provided with an air outlet pipe 40, the air outlet pipe 40 is fixedly connected with the piston machine 30, the impeller 40 is rotatably connected with the impeller 40, the impeller 40 is fixedly connected with the impeller 38 and fixedly connected with the screw shaft 38 and the air pipe 39 is arranged on one side, the spiral shaft; the side of the enclosure 17 adjacent the piston machine 30 is provided with a paint delivery tube 41 and the air tube branch 39 is connected to the side of the paint delivery tube 41 adjacent the screw feed shaft 37.
Further, the spray gun mechanism 14 includes a gun body 43, the gun body 43 is disposed on the upper side of the weight hydraulic rod 19, the weight hydraulic rod 19 is of a single design, a switch slot is formed in one side of the weight hydraulic rod 19 facing the weight hydraulic rod 19, a spray gun switch 44 is fixedly connected to one side of the weight hydraulic rod 19 facing the weight hydraulic rod 19, one side of the gun body 43 facing the piston machine 30 is fixedly connected to the paint extension tube 42, the paint extension tube 42 is fixedly connected to the paint delivery tube 41, the gun body 43 is provided with a first paint connection tube 45, the first paint connection tube 45 is fixedly connected to the paint extension tube 42, one side of the first paint connection tube 45 in the gun body 43 is provided with an air connection tube 63, one side of the gun body 43 away from the paint extension tube 42 is fixedly connected to the spray gun fixing block 48, one side of the spray gun fixing block 48 away from the fence 17 is provided with a hole blocking member 78, two sides of the spray gun fixing block 48 are fixedly connected to the limit fixing blocks 77, the limit fixing blocks 77 are provided with the limit fixing blocks 77 away from the gun body 43 and symmetrically provided with the limit pressing blocks 72 facing the center of the limit fixing blocks 77, each pressing block 72 is provided with a movable conveyor 75 facing the limit adjusting block 77, and a layer of sliding adjusting block 73 is provided with a slide adjusting block 73, and a limit spring fixing block 73, each spring fixing block 73 is fixedly connected to the center of the limit fixing block 73. The center of one side of the limiting fixing block 77, which faces the pressing block 72, is fixedly connected with a heating sheet 76; the side, far away from the gun body 43, of the spray gun fixing block 48 is fixedly connected with a spray painting fixing block 65, the side, far away from the spray gun fixing block 48, of the spray painting fixing block 65 is fixedly connected with a gun head fixing block 66, a gun head shell 68 is arranged on the side, far away from the spray gun fixing block 48, of the gun head fixing block 66, a gun head shell 68 is connected with the gun head fixing block 66 through a torsion spring 67, a spray gun head 71 is fixedly connected with the side, far away from the torsion spring 67, of the gun head shell 68, a second paint connecting pipe 62 is arranged inside the gun head shell 68, the second paint connecting pipe 62 penetrates through the spray painting fixing block 65 and is connected with the spray gun fixing block 48 and a first paint connecting pipe 45, two sides of the spray painting fixing block 65 are fixedly connected with a control hydraulic rod 64, an included angle between the control hydraulic rod 64 and the gun head fixing block 66 is at least forty-five degrees, one side, close to the spray painting fixing block 65, of the control hydraulic rod 64 is fixedly connected with an adjustment hydraulic rod 70, two sides of the gun head shell 68 are fixedly connected with adjustment hydraulic rods 69, and one side, far away from the gun head shell 68 is fixedly connected with the adjustment hydraulic rod 70.
Further, hole blocking component 78 includes hole blocking shell 49, hole blocking shell 49 is fixedly connected to one side of spray gun fixed block 48 far away from rail 17, one side of hole blocking shell 49, which is provided with sliding groove 50 and far away from gun body 43, is an opening design, sliding groove 50 is close to fixed connection fixed magnet 52 on one side of the opening, sliding groove 50 is internally provided with sliding connection control magnet 56 far away from one side of fixed magnet 52, sliding groove 50 is close to fixed magnet 52 side sliding connection first magnetic strip 51, first magnetic strip 51 is towards control magnet 56 side fixed connection soft baffle 53 and control magnet 56 fixed connection, sliding groove 50 is provided with air inlet chute 59 towards spray gun fixed block 48 side, sliding connection air inlet slider 57 and control magnet 56 fixed connection in air inlet chute 59, air inlet chute 59 is close to fixed connection hole blocking air inlet 61 and is connected to air connecting pipe 63, one side of air inlet slider 57 far away from air inlet hole blocking air inlet 61 is provided with air inlet chute 58, air inlet chute 57 is provided with air inlet duct and is provided with air pipe 60 in fixed connection air pipe 53, and air pipe 55 is provided with air inlet duct 55 and soft air inlet slider 54 connected to one side of air inlet chute 54.
The working principle is as follows: the worker firstly puts required raw materials into a charging box 29, the crawler motor 25 is started to rotate, the crawler motor 25 drives the crawler shaft 24 to rotate, the crawler shaft 24 drives the crawler wheels 23 to rotate, the control machine moves to a specified position, then the worker enters the fence 17 through climbing stairs 11, then the lifting rod 15 is controlled to ascend, the lifting rod 15 drives the fence 17 to ascend, and the fence 17 drives the spray gun mechanism 14 to ascend to reach the height of a bridge.
Then, a worker takes up the gun body 43, places the control hydraulic rod 64 on the wall of the bridge, the control hydraulic rod 64 drives the paint spraying fixing block 65 to move, the paint spraying fixing block 65 drives the gun head shell 68 to move, the gun head shell 68 drives the paint spraying gun head 71 to move, the distance between the paint spraying gun head 71 and the bridge is fixed due to the control hydraulic rod 64, the pressing blocks 72 are arranged on the upper side and the lower side of the bridge, the adjusting springs 74 drive the adjusting sliders 73 to slide downwards due to the adjusting springs 74, the adjusting sliders 73 drive the pressing blocks 72 to slide downwards, the pressing blocks 72 drive the movable conveyor belts 75 to slide downwards, the movable conveyor belts 75 are in contact with the upper side and the lower side of the bridge, the upper distance and the lower distance of the spray gun are fixed, and the spray painting of the spray gun on the bridge is more uniform due to the fixed upper distance and the fixed distance between the spray gun head 71 and the bridge.
After the device is placed, a worker presses down a spray gun switch 44, the spray gun switch 44 controls a piston machine 30 to compress up and down, the piston machine 30 sucks air from an air inlet 31 and compresses the air into an air outlet pipe 40, the air is brought to an impeller 38 to rotate, the impeller 38 drives a screw shaft 36 to rotate, the screw shaft 36 drives the screw feeding shaft 37 to rotate, the screw shaft 37 stirs and transports materials on the screw feeding shaft 37, the screw shaft 36 drives a single gear 34 to rotate, the single gear 34 continuously extrudes a feed liquid pressure rod 32 because of being single-tooth, the feed hydraulic rod 32 performs stage switching on a blocking hydraulic rod 46 through a feed connecting pipe 47, so that the materials in a feeding box 29 enter a feed pipe 35 to the screw feeding shaft 37 in stages, the screw feeding shaft 37 feeds the materials at the feed pipe 35 to a paint conveying pipe 41, the screw feeding shaft 37 feeds stirred fireproof paint to the paint conveying pipe 41, the stirred fireproof paint enters a first paint connecting pipe 42 to a first paint connecting pipe 45 in a paint connecting pipe 43 through air supply of an air pipe branch 39, the air is fed to the paint conveying pipe 63, the air is conveyed to a first paint connecting pipe 64 to a spray gun control rod control slide groove 64, the spray gun head 64 is moved forward, the spray gun control block 64 is moved forward, the spray gun control unit 64, and the spray gun control unit 64 is moved forward through a front connecting pipe control slide groove 76, the front control slide control block 64, and a spray gun control unit 64, the spray gun control unit is moved forward, the spray gun control unit 64, the control hydraulic rod 64 controls the corresponding adjustment hydraulic rod 69 through the adjustment hydraulic pipe 70 to extrude the gun head shell 68, the position of the gun head shell 68 is adjusted through the torsion spring 67, so that the painting angle is not changed, when the control hydraulic rod 64 moves on a plane, the control hydraulic rod 64 controls the adjustment hydraulic rod 69 to reset, and the gun head shell 68 resets through the torsion spring 67.
When paint spraying is carried out, when a hole at the joint of the bridge is met, a worker controls the air inlet telescopic rod 60 to be opened, air in the air inlet sliding groove 59 enters the rubber air pipe 55, the air in the air inlet sliding groove 59 is less, the air inlet sliding block 57 is pushed to slide forwards due to the existence of the pushing spring 58, the air inlet sliding block 57 drives the pushing spring 58 to move forwards, after the air inlet sliding block 57 moves forwards for a distance, the air inlet sliding block 57 and the first magnetic strip 51 repel each other to push the first magnetic strip 51 out of the sliding groove 50 and fall into the bridge, the first magnetic strip 51 is sucked to the bottom of the bridge, meanwhile, the first magnetic strip 51 drives the flexible baffle 53 to the inner wall of the bridge, the rubber air pipe 55 supplies air to the air jet port 54, the air jet port 54 jets air inside to prevent the pigment from being sprayed into the hole and the inner wall, after the paint spraying is finished, the worker closes the air inlet telescopic rod 60, the air inlet sliding groove 59 pushes the air inlet sliding block 57 to reset, the air inlet sliding block 57 drives the flexible baffle 53 to retract into the sliding groove 50, the flexible baffle 53 drives the first magnetic strip 51 to be sucked and fixed by the fixed magnet 52, and the first magnetic strip 51 returns to the sliding groove 50.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.