A wind and sand resistant electric porcelain insulator assembly

Abstract

The application belongs to the technical field of insulators, and discloses an anti-wind-sand electric porcelain insulator assembly, which comprises a supporting frame, a threaded plate, a vertical rod, two rotating plates, a concave block, a rack, a protective box, a gear, an annular plate, a sliding rod, a connecting plate, a special-shaped strip cotton and an insulator.

Description

Technical Field

[0001] This invention belongs to the field of insulator technology, specifically a wind and sand resistant porcelain insulator assembly. Background Technology

[0002] A wind- and sand-resistant porcelain insulator assembly is a specially designed insulating device for power transmission and distribution systems to withstand the effects of windy and sandy environments on electrical equipment. It is primarily used in high-voltage and ultra-high-voltage power lines, especially in areas prone to sandstorms or strong winds. This equipment is a crucial piece of electrical equipment designed for specific environmental conditions, possessing superior insulation performance and wind and sand resistance. It plays a vital role in ensuring the safe and stable operation of power systems and is particularly suitable for applications in harsh climatic conditions.

[0003] In existing technologies, the outer wall of insulators is mostly cleaned manually. However, this method presents challenges in desert regions, including harsh environments, high labor intensity, high safety risks, low cleaning efficiency, and delays. Furthermore, strong winds are frequent in desert areas, causing sand to adhere to the insulator's outer wall, forming a contamination layer. This reduces the insulator's insulation performance, easily leading to flashover and pollution faults, accelerating equipment aging, and seriously threatening the safe and stable operation of transmission lines. Summary of the Invention

[0004] To address the problem mentioned in the background art of strong winds carrying sand and adhering to the outer wall of insulators, the present invention provides a wind- and sand-resistant porcelain insulator assembly.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wind-resistant porcelain insulator assembly, comprising a support frame, an insulator fixedly connected to the top inner wall of the support frame, a protective box fixedly connected to the bottom of the support frame, and a wind-resistant mechanism, the wind-resistant mechanism comprising a baffle fixedly connected to the middle of the inner wall of the protective box, a crossbar rotatably connected to the inner wall of the baffle, both ends of the crossbar penetrating the protective box and extending to the outside of the protective box, wind fans fixedly connected to the outer walls of both ends of the crossbar, and a scraping component provided on the outer wall of the crossbar for scraping and cleaning the insulator.

[0006] Preferably, the scraping assembly includes reciprocating lead screws fixedly connected to the outer walls of both ends of the crossbar. The reciprocating lead screws are disposed inside the protective box, and the threads of the two reciprocating lead screws are arranged in opposite directions. A threaded plate is threadedly connected to the outer wall of one end of the reciprocating lead screw.

[0007] Preferably, vertical rods are fixedly connected to both sides of the top of the threaded plate, and two limiting holes are opened on both sides of the top of the support frame. The outer wall of one end of the vertical rod is slidably connected to the inner wall of the limiting hole. A rotating plate is hinged to one side of the top of the vertical rod, and a concave block is hinged to one end of the rotating plate.

[0008] Preferably, two concave blocks are provided, and a rack is fixedly connected to the bottom of the concave block. The bottom of the rack is slidably connected to the top of the support frame, and a gear is meshed with one side of the rack.

[0009] Preferably, there is one gear, and an annular plate is fixedly connected to the top of the gear. Sliding grooves are provided on both sides of the top of the annular plate, and a sliding rod is slidably connected to one end of the inner wall of the sliding groove.

[0010] Preferably, a connecting plate is fixedly connected to the top of the slide rod, and a shaped strip of cotton is fixedly connected to one side of the connecting plate, with the sidewall of the shaped strip of cotton contacting one side of the outer wall of the insulator.

[0011] Preferably, the inner wall of the gear is provided with an auxiliary component, the auxiliary component including a fixed ring rotatably connected to the inner wall of the gear, the bottom of the fixed ring being fixedly connected to the top of the support frame, and four round rods being fixedly connected to the top of the fixed ring around its perimeter.

[0012] Preferably, a triangular block is fixedly connected to the top of the round rod, a first compression spring is fixedly connected to one side of the slide rod, one end of the first compression spring is fixedly connected to one side of the inner wall of the slide groove, and curved rods are fixedly connected to both sides of the outer wall of the annular plate. A vertical plate is fixedly connected to the top of the curved rod, and scraping plates are fixedly connected to both ends of one side of the vertical plate.

[0013] Preferably, the side wall of the vertical plate is provided with an air jet assembly, the air jet assembly includes a strip box fixedly connected to one side of the outer wall of the vertical plate, a piston plate slidably connected to one end of the inner wall of the strip box, and three second compression springs fixedly connected to one side of the piston plate.

[0014] Preferably, one end of the second compression spring is fixedly connected to one side of the inner wall of the strip box, and three moving rods are fixedly connected to the side of the piston plate away from the second compression spring. One end of the moving rod is fixedly connected to the side wall of the connecting plate, and four exhaust pipes are fixedly connected to one side of the vertical plate. One end of the exhaust pipe extends into the interior of the strip box, and the other end of the exhaust pipe passes through and is slidably connected to the inner wall of the connecting plate and the shaped strip cotton.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention incorporates a wind-resistant sand-repellent mechanism. When the equipment is installed in a desert region, strong winds cause a fan to rotate a horizontal bar around the inner wall of a baffle. This horizontal bar, in turn, rotates a reciprocating screw, causing a threaded plate to reciprocate along its threaded groove. The two threaded plates move closer together, moving a vertical rod, which in turn moves a rotating plate. The pressure generated by the approaching plates causes a concave block to slide laterally across the top of the protective box, driving a rack. This rack movement drives a gear to rotate, which in turn rotates a ring plate, a sliding rod, a connecting plate, and a shaped strip of cotton. This rotating cotton makes close contact with the outer wall of the insulator, scraping away sand and dust, keeping the insulator clean and reducing the risk of flashover. It also reduces electrical faults caused by dirt and improves the overall reliability of the equipment. By utilizing strong winds to clean the outer wall of the insulator during operation, the equipment's automation level and adaptability are improved, maintenance costs are reduced, and work efficiency is increased.

[0016] This invention incorporates an anti-sand mechanism. When the sliding rod and the annular plate rotate around the insulator, one end of the sliding rod contacts the side wall of the triangular block and is compressed by the triangular block, causing the sliding rod to move laterally along the inner wall of the groove. The sliding rod drives the connecting plate and the shaped strip cotton to move laterally as well. During this movement, the shaped strip cotton comes into contact with two scraping plates on the side wall of the vertical plate. The scraping plates block and remove sand and dust adhering to both sides of the outer wall of the shaped strip cotton. Regularly removing this sand and dust improves the cleaning effect of the shaped strip cotton in subsequent work, preventing long-term corrosion or wear of equipment materials caused by sand and other contaminants, thereby extending the service life of the insulator and related equipment. When the sliding rod no longer contacts the triangular block, it is elastically compressed by the first compression spring, causing the shaped strip cotton to adhere tightly to the outer wall of the insulator again, increasing its contact area with the insulator surface and improving friction and cleaning effectiveness during the cleaning process.

[0017] This invention incorporates an anti-sand and windproof mechanism. When the sliding rod is compressed by the triangular block, it causes the connecting plate, moving rod, and piston plate to slide inside the strip box. This compresses the airflow in the rodless area inside the strip box, which is then expelled through the exhaust pipe towards the outer wall of the insulator. Because the annular plate rotates circumferentially, it drives the bent rod, vertical plate, strip box, and exhaust pipe to rotate as well. Therefore, when the airflow is discharged, it can directly act on the dead corners and hard-to-reach areas of the insulator, effectively removing sand and dirt adhering to its surface. Furthermore, the elastic compression of the three second compression springs effectively disperses the stress applied to the sliding rod when the triangular block is no longer in contact with the sliding rod, reducing potential localized stress concentration and minimizing the risk of material fatigue and damage. Attached Figure Description

[0018] Figure 1 This is a top view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention from below; Figure 3 This is a schematic diagram of the side structure of the insulator of the present invention; Figure 4 This is a top view of the rack structure of the present invention; Figure 5 This is a schematic diagram of the side structure of the irregularly shaped cotton strip of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of A in the middle; Figure 7 This is a schematic cross-sectional view of the connecting plate of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of B in the middle; Figure 9 For the present invention Figure 7 A magnified view of C.

[0019] In the diagram: 1. Support frame; 2. Insulator; 3. Protective box; 4. Anti-sand mechanism; 41. Baffle; 42. Horizontal bar; 43. Wind turbine; 44. Scraping assembly; 45. Auxiliary assembly; 46. Air jet assembly; 442. Reciprocating screw; 443. Threaded plate; 444. Vertical bar; 445. Limiting hole; 446. Rotating plate; 447. Concave block; 448. Rack; 449. Gear; 441. 0. Annular plate; 4411. Slide groove; 4412. Slide rod; 4413. Connecting plate; 4414. Shaped strip cotton; 451. Fixing ring; 452. Round rod; 453. Triangular block; 454. First compression spring; 455. Bent rod; 456. Vertical plate; 457. Scraper plate; 461. Strip box; 462. Piston plate; 463. Second compression spring; 464. Moving rod; 465. Exhaust pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 9As shown, the present invention provides a wind and sand resistant porcelain insulator assembly, including a support frame 1, an insulator 2 fixedly connected to the top inner wall of the support frame 1, a protective box 3 fixedly connected to the bottom of the support frame 1, and further including; The anti-sand mechanism 4 includes a baffle 41 fixedly connected to the middle of the inner wall of the protective box 3. A crossbar 42 is rotatably connected to the inner wall of the baffle 41. Both ends of the crossbar 42 penetrate the protective box 3 and extend to the outside of the protective box 3. A wind turbine 43 is fixedly connected to the outer wall of both ends of the crossbar 42. A scraping component 44 is provided on the outer wall of the crossbar 42 for scraping and cleaning the insulator 2.

[0022] The scraping assembly 44 includes a reciprocating screw 442 fixedly connected to the outer walls of both ends of the crossbar 42. The reciprocating screw 442 is located inside the protective box 3. The threads of the two reciprocating screws 442 are arranged in opposite directions. A threaded plate 443 is threadedly connected to the outer wall of one end of the reciprocating screw 442.

[0023] Vertical rods 444 are fixedly connected to both sides of the top of the threaded plate 443. Two limiting holes 445 are opened on both sides of the top of the support frame 1. The outer wall of one end of the vertical rod 444 is slidably connected to the inner wall of the limiting hole 445. A rotating plate 446 is hinged to one side of the top of the vertical rod 444. A concave block 447 is hinged to one end of the rotating plate 446.

[0024] Two concave blocks 447 are provided. A rack 448 is fixedly connected to the bottom of the concave block 447. The bottom of the rack 448 is slidably connected to the top of the support frame 1. A gear 449 is meshed with one side of the rack 448.

[0025] There is one gear 449. The top of the gear 449 is fixedly connected to an annular plate 4410. Both sides of the top of the annular plate 4410 are provided with sliding grooves 4411. One end of the inner wall of the sliding groove 4411 is slidably connected to a sliding rod 4412.

[0026] A connecting plate 4413 is fixedly connected to the top of the sliding rod 4412, and a shaped strip cotton 4414 is fixedly connected to one side of the connecting plate 4413. The side wall of the shaped strip cotton 4414 contacts one side of the outer wall of the insulator 2.

[0027] The above solution involves installing the equipment in a desert region. When strong winds occur, the wind turbine 43 will cause the horizontal bar 42 to rotate around the inner wall of the baffle 41. The horizontal bar 42 will then drive the reciprocating screw 442 to rotate, causing the threaded plate 443 to reciprocate along the thread groove. The two threaded plates 443 will move closer together, causing the vertical bar 444 to move. The vertical bar 444 will then drive the rotating plate 446 to move. The squeezing force generated by the moving plates 446 approaching each other causes the concave block 447 to drive the rack 448 to slide laterally on the top of the protective box 3. During the movement of the rack 448, it drives the gear 449 to rotate in a circle. The gear 449 drives the annular plate 4410, the slide rod 4412, the connecting plate 4413 and the special-shaped strip cotton 4414 to rotate in a circle. During the rotation, the special-shaped strip cotton 4414 will come into close contact with the outer wall of the insulator 2 and scrape off the sand and dust attached to the outer wall of the insulator 2.

[0028] like Figures 1 to 9 As shown, the inner wall of the gear 449 is provided with an auxiliary component 45. The auxiliary component 45 includes a fixing ring 451 rotatably connected to the inner wall of the gear 449. The bottom of the fixing ring 451 is fixedly connected to the top of the support frame 1. Four round rods 452 are fixedly connected to the top of the fixing ring 451.

[0029] The above solution is adopted: when the slide bar 4412 no longer contacts the triangular block 453, it is elastically compressed by the first compression spring 454, so that the irregular strip cotton 4414 is tightly attached to the outer wall of the insulator 2 again, increasing its contact area with the surface of the insulator 2.

[0030] A triangular block 453 is fixedly connected to the top of the round rod 452. A first compression spring 454 is fixedly connected to one side of the slide rod 4412. One end of the first compression spring 454 is fixedly connected to one side of the inner wall of the slide groove 4411. A bent rod 455 is fixedly connected to both sides of the outer wall of the annular plate 4410. A vertical plate 456 is fixedly connected to the top of the bent rod 455. A scraping plate 457 is fixedly connected to both ends of one side of the vertical plate 456.

[0031] Using the above scheme: When the slide rod 4412 and the annular plate 4410 rotate around the insulator 2, one end of the slide rod 4412 will contact the side wall of the triangular block 453 and be squeezed by the triangular block 453, causing the slide rod 4412 to move laterally on the inner wall of the slide groove 4411. The slide rod 4412 drives the connecting plate 4413 and the shaped strip cotton 4414 to move laterally. When the shaped strip cotton 4414 moves, it will contact the two scraping plates 457 on the side wall of the vertical plate 456. It will be blocked and scraped by the scraping plates 457, so that the wind and sand attached to both sides of the outer wall of the shaped strip cotton 4414 will be scraped off.

[0032] The side wall of the vertical plate 456 is provided with an air jet assembly 46. The air jet assembly 46 includes a strip box 461 fixedly connected to one side of the outer wall of the vertical plate 456. A piston plate 462 is slidably connected to one end of the inner wall of the strip box 461. Three second compression springs 463 are fixedly connected to one side of the piston plate 462.

[0033] Using the above scheme: under the elastic compression of three second compression springs 463, when the triangular block 453 and the slide bar 4412 are no longer in contact, the stress applied to the slide bar 4412 is effectively dispersed by the elastic compression of the first compression spring 454 and the second compression spring 463, reducing the possible local stress concentration.

[0034] One end of the second compression spring 463 is fixedly connected to one side of the inner wall of the strip box 461. Three moving rods 464 are fixedly connected to the side of the piston plate 462 away from the second compression spring 463. One end of the moving rod 464 is fixedly connected to the side wall of the connecting plate 4413. Four exhaust pipes 465 are fixedly connected to one side of the vertical plate 456. One end of the exhaust pipe 465 extends into the interior of the strip box 461, and the other end of the exhaust pipe 465 passes through and is slidably connected to the inner wall of the connecting plate 4413 and the shaped cotton strip 4414.

[0035] Using the above scheme: When the sliding rod 4412 is squeezed by the triangular block 453, the sliding rod 4412 will drive the connecting plate 4413, the moving rod 464, and the piston plate 462 to slide inside the strip box 461. This process compresses the airflow in the rodless area inside the strip box 461 and sprays it onto the outer wall of the insulator 2 through the exhaust pipe 465. Due to the circumferential rotation of the annular plate 4410, it can drive the bent rod 455, the vertical plate 456, the strip box 461, and the exhaust pipe 465 to move in a circular motion together. Therefore, the sprayed airflow can directly act on the dead corners and hard-to-reach areas of the insulator 2, thereby achieving effective cleaning.

[0036] Working principle and usage process of this invention: When the equipment is installed in a desert area, strong winds will cause the fan 43 to rotate the horizontal bar 42 around the inner wall of the baffle 41. The horizontal bar 42 will then rotate the reciprocating screw 442, causing the threaded plate 443 to reciprocate along the thread groove. The two threaded plates 443 will move closer together, which will in turn move the vertical bar 444. The vertical bar 444 will then move the rotating plate 446, and the two rotating plates 446 will move closer together, generating… The compressive force causes the concave block 447 to slide laterally on the top of the protective box 3, driving the rack 448. During this movement, the rack 448 drives the gear 449 to rotate in a circular motion. The gear 449 then drives the annular plate 4410, slide rod 4412, connecting plate 4413, and shaped strip cotton 4414 to rotate in a circular motion. During this rotation, the shaped strip cotton 4414 makes close contact with the outer wall of the insulator 2, scraping away and cleaning the sand and dust adhering to the outer wall, keeping the insulator 2 clean and reducing the risk of flashover. This also reduces electrical faults caused by dirt and improves the overall reliability of the equipment. By utilizing strong winds to clean the outer wall of the insulator 2 during operation, the equipment's automation level and adaptability are improved, maintenance costs are reduced, and work efficiency is increased.

[0037] When the sliding rod 4412 and the annular plate 4410 rotate around the insulator 2, one end of the sliding rod 4412 will contact the side wall of the triangular block 453 and be squeezed by the triangular block 453, causing the sliding rod 4412 to move laterally on the inner wall of the sliding groove 4411. The sliding rod 4412 drives the connecting plate 4413 and the shaped strip cotton 4414 to move laterally. When the shaped strip cotton 4414 moves, it will contact the two scraping plates 457 on the side wall of the vertical plate 456. Due to the obstruction and scraping by the scraping plates 457, the sand and dust attached to both sides of the outer wall of the shaped strip cotton 4414 will be scraped off. By regularly removing the sand and dust on both sides of the shaped strip cotton 4414, the cleaning effect of the shaped strip cotton 4414 in subsequent work is improved, avoiding long-term corrosion or wear of equipment materials caused by sand and other dirt, thereby extending the service life of the insulator and related equipment. When the slide bar 4412 no longer contacts the triangular block 453, it is elastically compressed by the first compression spring 454, causing the shaped cotton strip 4414 to adhere tightly to the outer wall of the insulator 2 again, increasing its contact area with the surface of the insulator 2, and improving the friction and cleaning effect during the cleaning process.

[0038] When the slide rod 4412 is compressed by the triangular block 453, the slide rod 4412 will drive the connecting plate 4413, the moving rod 464, and the piston plate 462 to slide inside the strip box 461, causing the airflow in the rodless area inside the strip box 461 to be compressed. The airflow is then expelled through the exhaust pipe 465 to the outer wall of the insulator 2. Because the annular plate 4410 rotates in a circle, it can drive the bent rod 455, the vertical plate 456, the strip box 461, and the exhaust pipe 465 to rotate in a circle. Therefore, when the airflow is discharged, it can directly act on the dead corners and hard-to-reach areas of the insulator 2, thereby effectively removing the sand and dirt attached to its surface. Furthermore, under the elastic compression of the three second compression springs 463, when the triangular block 453 is no longer in contact with the slide rod 4412, the elastic compression under the cooperation of the first compression spring 454 and the second compression spring 463 effectively disperses the stress applied to the slide rod 4412, reducing the possible local stress concentration and reducing the risk of material fatigue and damage.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind- and sand-resistant porcelain insulator assembly, comprising a support frame (1), wherein an insulator (2) is fixedly connected to the top inner wall of the support frame (1), and a protective box (3) is fixedly connected to the bottom of the support frame (1), characterized in that: Also includes; The anti-sand mechanism (4) includes a baffle (41) fixedly connected to the middle of the inner wall of the protective box (3). A crossbar (42) is rotatably connected to the inner wall of the baffle (41). Both ends of the crossbar (42) penetrate the protective box (3) and extend to the outside of the protective box (3). Both ends of the outer wall of the crossbar (42) are fixedly connected to a wind fan (43). A scraping component (44) is provided on the outer wall of the crossbar (42) for scraping and cleaning the insulator (2).

2. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 1, characterized in that: The scraping assembly (44) includes a reciprocating screw (442) fixedly connected to the outer walls of both ends of the crossbar (42). The reciprocating screw (442) is located inside the protective box (3). The threads of the two reciprocating screws (442) are arranged in opposite directions. A threaded plate (443) is threadedly connected to the outer wall of one end of the reciprocating screw (442).

3. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 2, characterized in that: Vertical rods (444) are fixedly connected to both sides of the top of the threaded plate (443). Two limiting holes (445) are opened on both sides of the top of the support frame (1). The outer wall of one end of the vertical rod (444) is slidably connected to the inner wall of the limiting hole (445). A rotating plate (446) is hinged to one side of the top of the vertical rod (444). A concave block (447) is hinged to one end of the rotating plate (446).

4. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 3, characterized in that: Two concave blocks (447) are provided. A rack (448) is fixedly connected to the bottom of the concave block (447). The bottom of the rack (448) is slidably connected to the top of the support frame (1). A gear (449) is meshed with one side of the rack (448).

5. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 4, characterized in that: One gear (449) is provided, and an annular plate (4410) is fixedly connected to the top of the gear (449). Slide grooves (4411) are provided on both sides of the top of the annular plate (4410), and a slide rod (4412) is slidably connected to one end of the inner wall of the slide groove (4411).

6. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 5, characterized in that: A connecting plate (4413) is fixedly connected to the top of the slide rod (4412), and a shaped strip cotton (4414) is fixedly connected to one side of the connecting plate (4413). The side wall of the shaped strip cotton (4414) contacts one side of the outer wall of the insulator (2).

7. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 6, characterized in that: The inner wall of the gear (449) is provided with an auxiliary component (45). The auxiliary component (45) includes a fixed ring (451) rotatably connected to the inner wall of the gear (449). The bottom of the fixed ring (451) is fixedly connected to the top of the support frame (1). Four round rods (452) are fixedly connected around the top of the fixed ring (451).

8. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 7, characterized in that: A triangular block (453) is fixedly connected to the top of the round rod (452), a first compression spring (454) is fixedly connected to one side of the slide rod (4412), one end of the first compression spring (454) is fixedly connected to one side of the inner wall of the slide groove (4411), and a bent rod (455) is fixedly connected to both sides of the outer wall of the annular plate (4410). A vertical plate (456) is fixedly connected to the top of the bent rod (455), and a scraping plate (457) is fixedly connected to both ends of one side of the vertical plate (456).

9. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 8, characterized in that: The side wall of the vertical plate (456) is provided with an air jet assembly (46), the air jet assembly (46) includes a strip box (461) fixedly connected to one side of the outer wall of the vertical plate (456), a piston plate (462) is slidably connected to one end of the inner wall of the strip box (461), and three second compression springs (463) are fixedly connected to one side of the piston plate (462).

10. The wind-resistant and sand-resistant porcelain insulator assembly according to claim 9, characterized in that: One end of the second compression spring (463) is fixedly connected to one side of the inner wall of the strip box (461). Three moving rods (464) are fixedly connected to the side of the piston plate (462) away from the second compression spring (463). One end of the moving rod (464) is fixedly connected to the side wall of the connecting plate (4413). Four exhaust pipes (465) are fixedly connected to one side of the vertical plate (456). One end of the exhaust pipe (465) extends into the interior of the strip box (461), and the other end of the exhaust pipe (465) passes through and is slidably connected to the inner wall of the connecting plate (4413) and the shaped strip cotton (4414).

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