Integral low-noise flexible chain wheel

Abstract

The invention discloses an integral low-noise flexible chain wheel, and belongs to the technical field of chain wheels, the integral low-noise flexible chain wheel comprises a chain wheel body, a plurality of evenly distributed chain wheel teeth are fixedly connected to the outer circular surface of the chain wheel body, buffer pads are fixedly connected to the two sides, close to the chain wheel teeth, of the outer circular surface of the chain wheel body, and an air blowing assembly is arranged in the chain wheel body. The air blowing assembly comprises an air chamber formed in the position, below the chain wheel teeth, in the chain wheel body. By arranging the air blowing assembly, through rotation of the chain wheel body, the push plate is driven to move up and down in a reciprocating mode, the push plate moves downwards, external air is sucked into the air chamber, then the push plate moves upwards, air in the air chamber is extruded, the air in the air chamber is sprayed out through the air spraying holes, and dust and particles in tooth grooves are blown away; therefore, dust and particles are prevented from being accumulated in the tooth grooves, smooth operation of the chain wheel is guaranteed, friction and abrasion between the chain wheel and a chain are reduced, and the service life of the chain wheel is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of sprockets, and more specifically, to an integral low-noise flexible sprocket. Background Art

[0002] A sprocket is a wheel with toothed chain pins used to engage with accurately pitched blocks on a chain link or cable. Sprockets are widely used in mechanical transmissions in fields such as chemical industry, wood processing, agricultural machinery, food processing, instrumentation, and petroleum.

[0003] A low-noise flexible sprocket is an innovative design in the field of sprockets for reducing noise and friction. It aims to reduce the noise and vibration generated during chain transmission through specific structural and material selections, thereby improving the operating efficiency and reliability of equipment.

[0004] The working principle of a sprocket is to engage with blocks on a chain link or cable through toothed chain pins to achieve mechanical transmission. It is usually used to transmit motion between two perpendicularly intersecting shafts. However, some sprockets are exposed to the air during use, especially in fields such as wood processing and agricultural machinery, which allows dust and particles in the air to fall onto the sprocket, and some dust and particles will accumulate in the tooth grooves of the sprocket, resulting in unsmooth operation of the sprocket, or even jamming or stopping. At the same time, dust and particles will also increase the friction between the sprocket and the chain, leading to increased wear and significantly shortening the service life of the sprocket. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an integral low-noise flexible sprocket.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An integral low-noise flexible sprocket, comprising a sprocket body. A plurality of evenly distributed sprocket teeth are fixedly connected to the outer circumferential surface of the sprocket body. Buffer pads are fixedly connected to both sides of the outer circumferential surface of the sprocket body near the sprocket teeth. A blowing component is arranged inside the sprocket body. The blowing component includes an air chamber opened below the sprocket teeth inside the sprocket body. Push plates are hermetically and slidably connected inside the air chambers. First chutes are opened at the lower ends of the inner walls of the air chambers;

[0008] Upper sides of the inner circumferential surfaces of the first chutes are provided with first rotating grooves. First bevel gears are rotatably connected inside the first rotating grooves. Reciprocating lead screws are rotatably connected to the lower surfaces of the push plates, and the reciprocating lead screws penetrate into the first chutes and pass through the first bevel gears and are threadedly connected to the first bevel gears. Jet blocks are arranged on one side of the outer surfaces of the sprocket teeth. Air outlet pipes are opened at the upper ends of the inner walls of the air chambers, and one end of each air outlet pipe extends into the jet block.

[0009] Further, on one side of the lower end of the inner wall of the first rotating groove, a second rotating groove is provided. A second bevel gear is rotatably connected inside the second rotating groove, and the second bevel gear is meshed with the first bevel gear. On one side of the outer surface of the sprocket body corresponding to the second bevel gear, an air-gathering cover is fixedly connected. On one side of the outer surface of the second bevel gear, a rotating shaft is fixedly connected, and one end of the rotating shaft extends into the air-gathering cover and is fixedly connected with an impeller.

[0010] Further, a first limiting plate is rotatably connected inside the push plate, and the upper end of the reciprocating lead screw is fixedly connected with the first limiting plate. The lower end of the reciprocating lead screw is fixedly connected with a second limiting plate, and the second limiting plate is slidably connected inside the first sliding groove.

[0011] Further, a trapezoidal cavity is provided inside the air jet block, and one end of the air outlet pipe is communicated with the trapezoidal cavity. Five uniformly distributed air jet holes are provided at the lower end of the inner wall of the trapezoidal cavity, and the air jet holes are in a funnel shape.

[0012] Further, an air intake assembly is provided above the air outlet pipe inside the sprocket teeth. The air intake assembly includes a first sliding hole provided above the air outlet pipe inside the sprocket teeth, and the lower end of the first sliding hole is communicated with the air outlet pipe. A first sliding block is slidably connected inside the first sliding hole. A second spring is provided on the upper surface of the first sliding block. A first through hole is provided at the upper end of the inner wall of the first sliding hole. A second sliding hole is provided inside the first sliding block. A first sliding cover is slidably connected inside the second sliding hole. A first spring is provided on the lower surface of the first sliding cover. A first through port is provided at the upper end of the inner wall of the second sliding hole. Four uniformly distributed first arc-shaped through ports are provided on the outer side of the lower end of the inner wall of the second sliding hole. Four uniformly distributed first U-shaped grooves are provided on the inner circular surface of the second sliding hole.

[0013] Further, a retracting and releasing assembly is provided between the air jet block and the sprocket teeth. The retracting and releasing assembly includes second sliding grooves provided on one side of the outer surface of the sprocket teeth corresponding to the air jet block, and the air outlet pipe is communicated with the second sliding grooves. Second sliding blocks are slidably connected inside the second sliding grooves, and the second sliding blocks are fixedly connected with the air jet block. A first installation groove is provided at the lower end of the inner wall of each second sliding groove. A first rotating plate is rotatably connected inside the first installation groove. A first sliding rail is provided at the upper end of the first rotating plate. Fixing seats are fixedly connected to the lower surfaces of the second sliding blocks, and the fixing seats are slidably connected inside the first sliding rail.

[0014] Further, second slide rails are respectively arranged at the lower ends of the first rotating plates. At one side of the lower ends of the inner walls of the first installation grooves, third sliding grooves are respectively arranged. First sliding plates are slidably connected inside the third sliding grooves, and one end of each first sliding plate is slidably connected inside the second slide rail. On both sides of the outer surfaces of the first sliding plates, straight plates are fixedly connected to the sides far away from the first rotating plates, and the two straight plates respectively extend into the two buffer pads. At positions on both sides of the inner walls of the third sliding grooves close to one ends of the two straight plates, fourth sliding grooves are respectively arranged. T-shaped sliders are slidably connected inside the two fourth sliding grooves, and the two T-shaped sliders penetrate through the outer circular surfaces of the buffer pads. On the sides of the outer surfaces of the two straight plates far away from the T-shaped sliders, four fourth springs are respectively arranged.

[0015] Further, at positions corresponding to the air outlet pipes on the lower ends of the inner walls of the second sliding grooves, fixed pipes are respectively fixedly connected. Fourth sliding holes are arranged on the lower surfaces of the second sliders, and the fourth sliding holes communicate with the trapezoidal cavities. The fixed pipes are slidably connected with the fourth sliding holes. On both sides of the lower surfaces of the second sliders close to the fourth sliding holes and the fixed seats, third springs are respectively arranged.

[0016] Further, control components are respectively arranged at positions on the inner walls of the air outlet pipes close to the upper sides of the air chambers. The control components include fifth sliding grooves respectively arranged at positions on the inner walls of the air outlet pipes close to the upper sides of the air chambers. Third sliders are slidably connected inside the fifth sliding grooves. Second through holes are arranged on one sides of the upper surfaces of the third sliders. Second installation grooves are respectively arranged on the sides of the inner walls of the third sliding grooves far away from the first sliding plates, and the first U-shaped grooves are close to the fifth sliding grooves on the other sides. Second rotating plates are rotatably connected inside the second installation grooves. Fourth slide rails are respectively arranged at the lower ends of the second rotating plates. Second straight rods are fixedly connected to the sides of the outer surfaces of the first sliding plates close to the fourth slide rails, and one ends of the second straight rods are slidably connected inside the fourth slide rails. Third slide rails are respectively arranged at the upper ends of the second rotating plates. First straight rods are fixedly connected to the sides of the outer surfaces of the other third sliders close to the second installation grooves, and one ends of the first straight rods extend into the second installation grooves and are slidably connected with the third slide rails.

[0017] Further, one-way components are respectively arranged inside the third sliders. The one-way components include fifth sliding holes respectively arranged inside the third sliders between the third sliders and the first straight rods. Second sliding covers are slidably connected inside the fifth sliding holes. Fifth springs are respectively arranged on the lower surfaces of the second sliding covers. Second through openings are respectively arranged at the upper ends of the inner walls of the fifth sliding holes. Four uniformly distributed second arc-shaped through openings are respectively arranged on the outer sides of the lower ends of the inner walls of the fifth sliding holes. Four uniformly distributed second U-shaped grooves are arranged on the inner circular surfaces of the fifth sliding holes.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) In this solution, by setting up a blowing component, with the rotation of the sprocket body, external air flows through the air collecting cover to drive the impeller to rotate, thereby driving the push plate to reciprocate up and down in the air chamber. And when the push plate moves downward in the air chamber, external air is drawn into the air chamber, and then when the push plate moves upward in the air chamber, the gas in the air chamber is compressed, and the gas in the air chamber enters the trapezoidal cavity through the air outlet pipe. Then the gas is ejected through the air ejection holes to blow away the dust and particles in the tooth grooves, thus preventing the accumulation of dust and particles in the tooth grooves, ensuring the smooth operation of the sprocket, reducing the friction and wear between the sprocket and the chain, and improving the service life of the sprocket.

[0020] (2) In this solution, by setting up an air intake component, when the push plate moves downward, the air outlet pipe is blocked by the downward movement of the first slider, separating the trapezoidal cavity from the air chamber, so that a negative pressure is formed in the air chamber, which in turn drives the first sliding cover to move downward. Then, through the first through hole, the first U-shaped groove and the first arc-shaped through port, air is drawn into the air chamber, so that the air is drawn into the air chamber without passing through the air ejection holes, thus preventing the air ejection holes from being blocked and improving the use effect of the blowing component.

[0021] (3) In this solution, by setting up a retracting and extending component, when the sprocket meshes with the chain, the chain drives the T-shaped slider to move into the fourth chute, thereby starting the retracting and extending component to move the jet block into the second chute, thus sealing the air ejection holes and closing the blowing component corresponding to this position, so that the blowing component does not blow air into the tooth grooves at the meshing position of the sprocket and the chain. When the sprocket and the chain are separated, the chain moves away from the T-shaped slider, thereby starting the retracting and extending component to move the jet block out of the second chute and opening the blowing component corresponding to this position, so that the blowing component blows air into the tooth grooves at the separated position of the sprocket and the chain, improving the use effect and accuracy of the blowing component. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the structural schematic diagram of the blowing component of the present invention;

[0024] Figure 3 is the sectional structural schematic diagram of the blowing component of the present invention;

[0025] Figure 4 is of the present invention Figure 3 magnified structural schematic diagram of A therein;

[0026] Figure 5 is the sectional structural schematic diagram of the partial blowing component of the present invention;

[0027] Figure 6 is of the present invention Figure 5 magnified structural schematic diagram of B therein;

[0028] Figure 7 For the Figure 6 magnified structural schematic diagram of C in the present invention;

[0029] Figure 8 For the sectional structural schematic diagram of the retracting and releasing assembly of the present invention;

[0030] Figure 9 For the Figure 8 magnified structural schematic diagram of D in the present invention;

[0031] Figure 10 For the Figure 8 magnified structural schematic diagram of E in the present invention;

[0032] Figure 11 For the partial structural schematic diagram of the retracting and releasing assembly of the present invention;

[0033] Figure 12 For the Figure 11 magnified structural schematic diagram of F in the present invention;

[0034] Figure 13 For the structural schematic diagram of the control assembly of the present invention;

[0035] Figure 14 For the Figure 13 magnified structural schematic diagram of G in the present invention;

[0036] Figure 15 For the Figure 14 magnified structural schematic diagram of H in the present invention.

[0037] Description of the reference numerals in the figure:

[0038] 1. Sprocket body; 2. Sprocket teeth; 3. Buffer pad;

[0039] 4. Blowing assembly; 41. Air chamber; 42. Pusher plate; 43. First chute; 44. First rotating groove; 45. Reciprocating lead screw; 46. First bevel gear; 47. Air outlet pipe; 48. Jet block; 49. Second rotating groove; 410. Second bevel gear; 411. Air gathering hood; 412. Rotating shaft; 413. Impeller; 414. First limiting plate; 415. Second limiting plate; 416. Trapezoidal cavity; 417. Air jet holes;

[0040] 5. Intake assembly; 51. First sliding hole; 52. First slider; 53. Second sliding hole; 54. First sliding cover; 55. First spring; 56. First arc-shaped through port; 57. First U-shaped groove; 58. Second spring; 59. First through hole; 510. First through port;

[0041] 6. Retracting and extending assembly; 61. Second chute; 62. Second slider; 63. Third spring; 64. Fourth sliding hole; 65. Fixed tube; 66. Fixed seat; 67. First installation groove; 68. First rotating plate; 69. First slide rail; 610. Third chute; 611. First sliding plate; 612. Second slide rail; 613. Straight plate; 614. Fourth spring; 615. Fourth chute; 616. T-shaped slider

[0042] 7. Control assembly; 71. Fifth chute; 72. Third slider; 73. Second through hole; 74. First straight rod; 75. Second installation groove; 76. Second rotating plate; 77. Third slide rail; 78. Fourth slide rail; 79. Second straight rod

[0043] 8. One-way assembly; 81. Fifth sliding hole; 82. Second sliding cover; 83. Second arc-shaped through port; 84. Fifth spring; 85. Second U-shaped groove; 86. Second through port Detailed implementation mode

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0045] Please refer to Figures 1 to 15 , an integral low-noise flexible sprocket, including a sprocket body 1. A plurality of evenly distributed sprocket teeth 2 are fixedly connected to the outer circumferential surface of the sprocket body 1. Buffer pads 3 are fixedly connected to both sides of the outer circumferential surface of the sprocket body 1 close to the sprocket teeth 2. An air blowing assembly 4 is arranged inside the sprocket body 1. The air blowing assembly 4 includes an air chamber 41 opened below the sprocket teeth 2 inside the sprocket body 1. Push plates 42 are hermetically and slidably connected inside the air chamber 41. First chutes 43 are opened at the lower ends of the inner walls of the air chamber 41

[0046] On the upper side of the inner circular surface of the first chute 43, first rotating grooves 44 are opened. First bevel gears 46 are rotatably connected inside the first rotating grooves 44. Reciprocating lead screws 45 are rotatably connected to the lower surfaces of the push plates 42, and the reciprocating lead screws 45 penetrate into the first chute 43 and pass through the first bevel gears 46 and are threadedly connected to the first bevel gears 46. On one side of the outer surface of the sprocket teeth 2, jet blocks 48 are arranged. Air outlet pipes 47 are opened at the upper ends of the inner walls of the air chamber 41, and one end of the air outlet pipe 47 extends into the jet block 48

[0047] Such as Figure 3 , Figure 4As shown, on one side of the lower end of the inner wall of the first rotating groove 44, second rotating grooves 49 are respectively formed. Inside each of the second rotating grooves 49, a second bevel gear 410 is rotatably connected. The second bevel gear 410 is meshed with the first bevel gear 46. At the position corresponding to the second bevel gear 410 on one side of the outer surface of the sprocket body 1, air collecting hoods 411 are respectively fixedly connected. On one side of the outer surface of each second bevel gear 410, a rotating shaft 412 is fixedly connected. One end of each rotating shaft 412 extends into the air collecting hood 411 and is fixedly connected with an impeller 413.

[0048] As Figure 3 , Figure 4 shown, inside the push plate 42, first limiting plates 414 are respectively rotatably connected. The upper end of the reciprocating lead screw 45 is fixedly connected with the first limiting plate 414. The lower end of the reciprocating lead screw 45 is fixedly connected with a second limiting plate 415. The second limiting plate 415 is slidably connected inside the first sliding groove 43.

[0049] As Figure 6 shown, a trapezoidal cavity 416 is formed inside the air jet block 48. One end of the air outlet pipe 47 is communicated with the trapezoidal cavity 416. Five evenly distributed air jet holes 417 are formed at the lower end of the inner wall of the trapezoidal cavity 416. The air jet holes 417 are in a funnel shape.

[0050] During use, the sprocket is meshed with the chain through the sprocket teeth 2 to achieve mechanical transmission. At the same time, the buffer pad 3 is used to reduce the friction and noise between the sprocket and the chain. However, the sprocket is exposed to the air, so that dust and particles in the air will fall into the tooth grooves of the sprocket, which will cause the sprocket to run smoothly. At the same time, the dust and particles will also increase the friction between the sprocket and the chain, resulting in increased wear and significantly shortening the service life of the sprocket.

[0051] Therefore, a blowing component 4 is provided. When the sprocket is in use, the rotation of the sprocket body 1 causes external air to flow through the air gathering hood 411, driving the impeller 413 to rotate. Then, through the rotating shaft 412, the second bevel gear 410 is driven to rotate in the second rotating groove 49. Next, through the meshing of the second bevel gear 410 and the first bevel gear 46, the first bevel gear 46 is driven to rotate in the first rotating groove 44. Then, through the meshing of the reciprocating screw rod 45 and the first bevel gear 46, the reciprocating screw rod 45 is driven to move up and down reciprocally in the first sliding groove 43, thereby driving the push plate 42 to move up and down reciprocally in the air chamber 41. And through the cooperation of the first limiting plate 414 and the second limiting plate 415, the reciprocating screw rod 45 can be prevented from rotating with the rotation of the first bevel gear 46, enabling the reciprocating screw rod 45 to stably move up and down reciprocally in the air chamber 41 and the first sliding groove 43. And when the push plate 42 moves downward in the air chamber 41, external air is drawn into the air chamber 41. Then, when the push plate 42 moves upward in the air chamber 41, the gas in the air chamber 41 is compressed, and the gas in the air chamber 41 enters the jet block 48 through the air outlet pipe 47. Then, the gas is ejected through the jet block 48, and the jet block 48 faces downward so that the gas is sprayed into the tooth grooves between the sprocket teeth 2, blowing away the dust and particles in the tooth grooves, thereby preventing the accumulation of dust and particles in the tooth grooves, ensuring the smooth operation of the sprocket, reducing the friction and wear between the sprocket and the chain, and improving the service life of the sprocket. And through the cooperation of the trapezoidal cavity 416 and the air jet holes 417, the spraying range of the gas from the jet block 48 is increased. At the same time, the air jet holes 417 are funnel-shaped, making the ejection speed of the gas from the air jet holes 417 faster, improving the use effect of the blowing component 4.

[0052] As Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 shown, an air intake component 5 is provided above the air outlet pipe 47 inside the sprocket tooth 2. The air intake component 5 includes a first sliding hole 51 opened above the air outlet pipe 47 inside the sprocket tooth 2, and the lower end of the first sliding hole 51 is communicated with the air outlet pipe 47. A first sliding block 52 is slidably connected inside the first sliding hole 51. A second spring 58 is arranged on the upper surface of the first sliding block 52. A first through hole 59 is opened at the upper end of the inner wall of the first sliding hole 51. A second sliding hole 53 is opened inside the first sliding block 52. A first sliding cover 54 is slidably connected inside the second sliding hole 53. A first spring 55 is arranged on the lower surface of the first sliding cover 54. A first through port 510 is opened at the upper end of the inner wall of the second sliding hole 53. Four uniformly distributed first arc-shaped through ports 56 are opened on the outer side of the lower end of the inner wall of the second sliding hole 53. Four uniformly distributed first U-shaped grooves 57 are opened on the inner circular surface of the second sliding hole 53.

[0053] In the above embodiments, the push plate 42 moves upward in the air chamber 41 to squeeze the gas in the air chamber 41, and the gas is ejected from the air ejection holes 417 in the air ejection block 48, so as to blow away the dust and particles in the tooth grooves between the sprocket teeth 2, prevent the dust and particles from accumulating in the tooth grooves, ensure the smooth operation of the sprocket, reduce the friction and wear between the sprocket and the chain, and improve the service life of the sprocket. However, when the push plate 42 moves downward in the air chamber 41 to draw air into the air chamber 41, the air will flow through the air ejection holes 417, the trapezoidal chamber 416 and the air outlet pipe 47 into the air chamber 41, and because the air will contain dust and particles, the air ejection holes 417 are prone to blockage, reducing the use effect of the air blowing assembly 4.

[0054] Therefore, an air intake assembly 5 is provided. When the push plate 42 moves downward, the first slider 52 is driven by the second spring 58 to move downward in the first sliding hole 51, thereby blocking the air outlet pipe 47, separating the trapezoidal chamber 416 from the air chamber 41. Then, a negative pressure is formed in the air chamber 41 by the downward movement of the push plate 42, which drives the first sliding cover 54 to move downward in the second sliding hole 53. Then, through the first through hole 59, the first U-shaped groove 57 and the first arc-shaped through port 56, the air can flow through the first slider 52, and then the external air is drawn into the air chamber 41 through the first through hole 59 and the first sliding hole 51, so that the air is drawn into the air chamber 41 without passing through the air ejection holes 417, thereby preventing the air ejection holes 417 from being blocked and improving the use effect of the air blowing assembly 4. When the push plate 42 moves upward, the first sliding cover 54 is driven by the first spring 55 to move upward in the second sliding hole 53, thereby blocking one end of the first through port 510 and the first U-shaped groove 57, further preventing the air from flowing through the first slider 52. Then, by the upward movement of the push plate 42, the air pressure in the air chamber 41 increases, which pushes the first slider 52 to move upward, opening the air outlet pipe 47 and connecting the trapezoidal chamber 416 with the air chamber 41, thus ensuring the normal use of the air blowing assembly 4.

[0055] Such as Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12As shown, a retracting and releasing assembly 6 is provided between the jet block 48 and the sprocket teeth 2. The retracting and releasing assembly 6 includes second chutes 61 opened at positions corresponding to the jet block 48 on one side of the outer surface of the sprocket teeth 2, and the air outlet pipe 47 is communicated with the second chutes 61. Second sliders 62 are slidably connected inside the second chutes 61, and the second sliders 62 are fixedly connected to the jet block 48. First mounting grooves 67 are opened at the lower ends of the inner walls of the second chutes 61. First rotating plates 68 are rotatably connected inside the first mounting grooves 67. First sliding rails 69 are opened at the upper ends of the first rotating plates 68. Fixed seats 66 are fixedly connected to the lower surfaces of the second sliders 62, and the fixed seats 66 are slidably connected inside the first sliding rails 69.

[0056] As Figure 10 , Figure 11 , Figure 12 shown, second sliding rails 612 are opened at the lower ends of the first rotating plates 68. Third chutes 610 are opened at one sides of the lower ends of the inner walls of the first mounting grooves 67. First sliding plates 611 are slidably connected inside the third chutes 610, and one ends of the first sliding plates 611 are slidably connected inside the second sliding rails 612. Straight plates 613 are fixedly connected to both sides of the outer surfaces of the first sliding plates 611 far away from the first rotating plates 68, and the two straight plates 613 extend into the two buffer pads 3 respectively. Fourth chutes 615 are opened at positions of both sides of the inner walls of the third chutes 610 close to one ends of the two straight plates 613. T-shaped sliders 616 are slidably connected inside the two fourth chutes 615, and the two T-shaped sliders 616 penetrate through the outer circular surfaces of the buffer pads 3. Four fourth springs 614 are arranged on both sides of the outer surfaces of the two straight plates 613 far away from the T-shaped sliders 616.

[0057] As Figure 9 shown, fixed pipes 65 are fixedly connected to positions of the lower ends of the inner walls of the second chutes 61 corresponding to the air outlet pipe 47. Fourth sliding holes 64 are opened on the lower surfaces of the second sliders 62, and the fourth sliding holes 64 are communicated with the trapezoidal cavities 416. The fixed pipes 65 are slidably connected with the fourth sliding holes 64. Third springs 63 are arranged on both sides of the lower surfaces of the second sliders 62 close to the fourth sliding holes 64 and the fixed seats 66.

[0058] In the above embodiments, when the push plate 42 moves downward, the intake assembly 5 sucks gas into the air chamber 41 through the first through hole 59, and then when the push plate 42 moves upward, the gas in the air chamber 41 is ejected from the air jet holes 417, so as to blow away the dust and particles in the tooth grooves between the sprocket teeth 2. However, when the sprocket is in use and meshed with the chain, when the block on the chain fits into the tooth groove on the sprocket, there is no need to blow air through the blowing assembly 4. And because air is sucked when the push plate 42 moves downward and air is blown when the push plate 42 moves upward, the blowing assembly 4 blows air intermittently. Therefore, when the blowing assembly 4 blows air when the sprocket is meshed with the chain, when the sprocket and the chain are separated, the blowing assembly 4 may not be able to blow air into the tooth grooves between the sprocket teeth 2, reducing the use effect and accuracy of the blowing assembly 4.

[0059] Therefore, a retracting and extending assembly 6 is provided. When the sprocket is meshed with the chain, the T-shaped slider 616 is driven by the chain to move into the fourth chute 615, thereby pushing the straight plate 613 to drive the first sliding plate 611 to move away from the first rotating plate 68. Then, through the sliding of the first sliding plate 611 in the second sliding rail 612, the first rotating plate 68 is driven to rotate in the first installation groove 67. Then, through the sliding of the fixed seat 66 in the first sliding rail 69, the second slider 62 is driven to move into the second chute 61, thereby driving the air jet block 48 to move into the second chute 61 and sealing the air jet holes 417, and further closing the blowing assembly 4 corresponding to this position, so that the blowing assembly 4 does not blow air into the tooth grooves at the meshing position of the sprocket and the chain. Then, when the sprocket and the chain are separated, the chain moves away from the T-shaped slider 616, and then the straight plate 613 and the first sliding plate 611 are driven by the fourth spring 614 to move towards the first rotating plate 68, thereby driving the first rotating plate 68 to rotate, and further driving the second slider 62 to move out of the second chute 61, so that the air jet block 48 moves out of the second chute 61, opening the blowing assembly 4 corresponding to this position, so that the blowing assembly 4 blows air into the tooth grooves at the separated position of the sprocket and the chain, improving the use effect and accuracy of the blowing assembly 4. And the third spring 63 can drive the second slider 62 to move out of the second chute 61, so that the air jet block 48 can move out of the second chute 61 more stably. Then, through the cooperation of the fourth sliding hole 64 and the fixed pipe 65, the gas can better enter the trapezoidal cavity 416 through the air outlet pipe 47, ensuring the normal use of the blowing assembly 4.

[0060] Such as Figure 8 、 Figure 13 、 Figure 14As shown, control components 7 are provided at positions on the inner wall of the air outlet pipe 47 near the upper part of the air chamber 41. The control component 7 includes fifth chutes 71 opened at positions on the inner wall of the air outlet pipe 47 near the upper part of the air chamber 41. A third slider 72 is slidably connected inside the fifth chute 71. A second through hole 73 is opened on one side of the upper surface of the third slider 72. Second installation grooves 75 are opened on the sides of the inner walls of the third chutes 610 away from the first slide plate 611, and the fifth chute 71 near the other side is close to the first U-shaped groove 57. Second rotating plates 76 are rotatably connected inside the second installation grooves 75. Fourth slide rails 78 are opened at the lower ends of the second rotating plates 76. Second straight rods 79 are fixedly connected to the sides of the outer surface of the first slide plate 611 close to the fourth slide rails 78, and one end of the second straight rod 79 is slidably connected inside the fourth slide rail 78. Third slide rails 77 are opened at the upper ends of the second rotating plates 76. First straight rods 74 are fixedly connected to the sides of the outer surface of the other third slider 72 close to the second installation grooves 75, and one end of the first straight rod 74 extends into the second installation groove 75 and is slidably connected to the third slide rail 77.

[0061] As Figure 14 , Figure 15 shown, one-way components 8 are provided inside the third sliders 72. The one-way component 8 includes fifth slide holes 81 opened inside the third slider 72 between the third slider 72 and the first straight rod 74. Second slide covers 82 are slidably connected inside the fifth slide holes 81. Fifth springs 84 are opened on the lower surfaces of the second slide covers 82. Second through openings 86 are opened at the upper ends of the inner walls of the fifth slide holes 81. Four uniformly distributed second arc-shaped through openings 83 are opened on the outer sides of the lower ends of the inner walls of the fifth slide holes 81. Four uniformly distributed second U-shaped grooves 85 are opened on the inner circular surfaces of the fifth slide holes 81.

[0062] In the above embodiments, after the sprocket and the chain are engaged by the retracting and extending component 6, the blowing component 4 at the engaged position is closed, so that the blowing component 4 does not blow air into the tooth grooves at the engaged position of the sprocket and the chain. Then, after the sprocket and the chain are separated, the blowing component 4 at the separated position is opened, so that the blowing component 4 blows air into the tooth grooves at the separated position of the sprocket and the chain, improving the use effect and accuracy of the blowing component 4. Although the retracting and extending component 6 can control the blowing component 4 to accurately blow air into the tooth grooves at the separated position after the sprocket and the chain are separated, because the blowing component 4 itself blows air intermittently, after the blowing component 4 blows air into the tooth grooves, there will still be dust and particles remaining in the tooth grooves, reducing the use effect of the retracting and extending component 6.

[0063] Therefore, the control component 7 is set. When the sprocket is separated from the chain, the retracting and extending component 6 is activated to move the jet block 48 in the blowing component 4 out of the second chute 61. At the same time, the second straight rod 79 is driven to move. Then, the second straight rod 79 moves in the fourth slide rail 78, thereby driving the second rotating plate 76 to rotate in the second installation groove 75. Then, the first straight rod 74 slides in the third slide rail 77, driving the first straight rod 74 to move inside the fifth chute 71. At the same time, the third slider 72 is pushed to move, so that the second through hole 73 is offset from the air outlet pipe 47, disconnecting the air outlet pipe 47 from the air chamber 41 and preventing the gas in the air chamber 41 from being discharged. When the sprocket and the chain just engage and the retracting and extending component 6 is activated to retract the jet block 48 in one blowing component 4 into the second chute 61, the second straight rod 79 is driven to move at the same time. Then, the second straight rod 79 moves in the fourth slide rail 78, thereby driving the second rotating plate 76 to rotate in the second installation groove 75. Then, the first straight rod 74 slides in the third slide rail 77, driving the first straight rod 74 to move inside the second installation groove 75. At the same time, the third slider 72 is driven to move inside the fifth chute 71 towards the second installation groove 75, so that the second through hole 73 coincides with the air outlet pipe 47, connecting the air outlet pipe 47 with the air chamber 41, enabling the gas in the air chamber 41 to be discharged, and thus activating the next blowing component 4 to blow air into the tooth groove at the position where it will engage with the chain, and then accurately blowing air into the tooth groove at the position where it will engage. Then, through the cooperation of the control component 7 and the retracting and extending component 6, the blowing component 4 can only blow air into the tooth groove before the sprocket and the chain are about to engage, improving the usage effect of the retracting and extending component 6.

[0064] In the above embodiment, the control component 7 controls the blowing component 4 to be opened before the sprocket and the chain are about to engage, and blows air into the tooth groove at the position where it will engage to blow away the dust and particles in the tooth groove. Then, through the cooperation of the control component 7 and the retracting and extending component 6, the blowing component 4 can only blow air into the tooth groove before the sprocket and the chain are about to engage. However, the third slider 72 cuts off the air outlet pipe 47 from the air chamber 41, preventing the gas from being drawn into the air chamber 41 through the air outlet pipe 47 and affecting the normal use of the blowing component 4.

[0065] Therefore, a one-way component 8 is provided. When the third slider 72 separates the air outlet pipe 47 from the air chamber 41, the air outlet pipe 47 coincides with the first rotating plate 68. When it is necessary to pump gas into the air chamber 41, due to the negative pressure in the air chamber 41, the second sliding cover 82 is driven to move downward in the fifth sliding hole 81. Then, through the cooperation of the second through port 86, the second U-shaped groove 85 and the second arc through port 83, the air outlet pipe 47 is connected to the air chamber 41, and at the same time, the gas is pumped into the air chamber 41 through the intake component 5. When the gas needs to be discharged from the air chamber 41, the second sliding cover 82 is driven to move upward by the fifth spring 84, so as to close one end of the second through port 86 and the second U-shaped groove 85, preventing the gas in the air chamber 41 from being discharged through the second through port 86, and thus ensuring the normal use of the blowing component 4.

[0066] Usage method: When the sprocket rotates and mechanical transmission is achieved through the chain, the air drives the impeller 413 to rotate through the air collecting cover 411, thereby driving the push plate 42 to move. And when the sprocket rotates to drive the chain to move, when the sprocket meshes with the chain, the retracting and releasing component 6 at the meshing position is started to retract the corresponding jet block 48 into the second sliding groove 61, thereby closing the corresponding blowing component 4. At the same time, the sprocket and the chain are started through the retracting and releasing component 6 to open the blowing component 4 at this position and blow air into the tooth groove at the position where meshing is about to occur. When the sprocket and the chain are about to separate, the retracting and releasing component 6 is started to move the corresponding jet block 48 out of the second sliding groove 61, and at the same time, the control component 7 is started to separate the air outlet pipe 47 from the air chamber 41. Then, through the cooperation of the one-way component 8 and the intake component 5, the gas can be pumped into the air chamber 41, and the one-way component 8 prevents the gas in the air chamber 41 from being discharged.

[0067] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An integral low-noise flexible sprocket, comprising a sprocket body (1), wherein a plurality of evenly distributed sprocket teeth (2) are fixedly connected to the outer circumferential surface of the sprocket body (1), and buffer pads (3) are fixedly connected to both sides of the outer circumferential surface of the sprocket body (1) close to the sprocket teeth (2), and the features are as follows: Inside the sprocket body (1), a blowing component (4) is provided. The blowing component (4) includes an air chamber (41) opened below the sprocket teeth (2) inside the sprocket body (1). Inside the air chamber (41), a push plate (42) is hermetically and slidably connected. At the lower ends of the inner walls of the air chamber (41), first sliding grooves (43) are opened. On the upper sides of the inner circumferential surfaces of the first sliding grooves (43), first rotating grooves (44) are opened. Inside the first rotating grooves (44), first bevel gears (46) are rotatably connected. On the lower surfaces of the push plates (42), reciprocating lead screws (45) are rotatably connected. The reciprocating lead screws (45) penetrate into the first sliding grooves (43) and pass through the first bevel gears (46) and are threadedly connected to the first bevel gears (46). On one side of the outer surfaces of the sprocket teeth (2), air jet blocks (48) are provided. At the upper ends of the inner walls of the air chamber (41), air outlet pipes (47) are opened. One end of the air outlet pipe (47) extends into the air jet block (48).

2. The integral low-noise flexible sprocket according to claim 1, wherein: On one side of the lower ends of the inner walls of the first rotating grooves (44), second rotating grooves (49) are opened. Inside the second rotating grooves (49), second bevel gears (410) are rotatably connected. The second bevel gears (410) are meshed with the first bevel gears (46). At the positions corresponding to the second bevel gears (410) on one side of the outer surface of the sprocket body (1), air collecting covers (411) are fixedly connected. On one side of the outer surfaces of the second bevel gears (410), rotating shafts (412) are fixedly connected. One end of each rotating shaft (412) extends into the air collecting cover (411) and is fixedly connected with an impeller (413).

3. The integral low-noise flexible sprocket according to claim 1, wherein: Inside the push plate (42), first limiting plates (414) are rotatably connected. The upper ends of the reciprocating lead screws (45) are fixedly connected with the first limiting plates (414). The lower ends of the reciprocating lead screws (45) are fixedly connected with second limiting plates (415). The second limiting plates (415) are slidably connected inside the first sliding grooves (43).

4. The integral low-noise flexible sprocket according to claim 1, wherein: Inside the air jet block (48), a trapezoidal cavity (416) is opened. One end of the air outlet pipe (47) is communicated with the trapezoidal cavity (416). At the lower end of the inner wall of the trapezoidal cavity (416), five uniformly distributed air jet holes (417) are opened. The air jet holes (417) are in a funnel shape.

5. The integral low-noise flexible sprocket according to claim 4, characterized in that: Above the air outlet pipe (47) inside the sprocket tooth (2), an air intake assembly (5) is provided. The air intake assembly (5) includes a first sliding hole (51) opened above the air outlet pipe (47) inside the sprocket tooth (2). The lower end of the first sliding hole (51) is communicated with the air outlet pipe (47). A first sliding block (52) is slidably connected inside the first sliding hole (51). A second spring (58) is arranged on the upper surface of the first sliding block (52). A first through hole (59) is opened at the upper end of the inner wall of the first sliding hole (51). A second sliding hole (53) is opened inside the first sliding block (52). A first sliding cover (54) is slidably connected inside the second sliding hole (53). A first spring (55) is arranged on the lower surface of the first sliding cover (54). A first through port (510) is opened at the upper end of the inner wall of the second sliding hole (53). Four uniformly distributed first arc-shaped through ports (56) are opened on the outer side of the lower end of the inner wall of the second sliding hole (53). Four uniformly distributed first U-shaped grooves (57) are opened on the inner circular surface of the second sliding hole (53).

6. The integral low-noise flexible sprocket according to claim 4, characterized in that: A retracting and releasing assembly (6) is arranged between the jet block (48) and the sprocket tooth (2). The retracting and releasing assembly (6) includes second sliding grooves (61) opened at positions corresponding to the jet block (48) on one side of the outer surface of the sprocket tooth (2). The air outlet pipe (47) is communicated with the second sliding grooves (61). Second sliding blocks (62) are slidably connected inside the second sliding grooves (61). The second sliding blocks (62) are fixedly connected to the jet block (48). First installation grooves (67) are opened at the lower ends of the inner walls of the second sliding grooves (61). First rotating plates (68) are rotatably connected inside the first installation grooves (67). First sliding rails (69) are opened at the upper ends of the first rotating plates (68). Fixed seats (66) are fixedly connected to the lower surfaces of the second sliding blocks (62). The fixed seats (66) are slidably connected inside the first sliding rails (69).

7. The integral low-noise flexible sprocket according to claim 6, wherein: Second sliding rails (612) are opened at the lower ends of the first rotating plates (68). Third sliding grooves (610) are opened at one side of the lower ends of the inner walls of the first installation grooves (67). First sliding plates (611) are slidably connected inside the third sliding grooves (610). One end of the first sliding plate (611) is slidably connected inside the second sliding rails (612). Straight plates (613) are fixedly connected to both sides of the outer surface of the first sliding plate (611) away from the first rotating plate (68). The two straight plates (613) extend into the two buffer pads (3) respectively. Fourth sliding grooves (615) are opened at positions near one ends of the two straight plates (613) on both sides of the inner wall of the third sliding groove (610). T-shaped sliding blocks (616) are slidably connected inside the two fourth sliding grooves (615). The two T-shaped sliding blocks (616) penetrate through the outer circular surface of the buffer pad (3). Four fourth springs (614) are arranged on the outer surface of the two straight plates (613) away from the T-shaped sliding blocks (616).

8. The integral low-noise flexible sprocket according to claim 6, characterized in that: At the lower ends of the inner walls of the second sliding grooves (61) corresponding to the air outlet pipes (47), fixed pipes (65) are fixedly connected. A fourth sliding hole (64) is formed in the lower surface of the second sliding block (62), and the fourth sliding hole (64) communicates with the trapezoidal cavity (416). The fixed pipe (65) is slidably connected to the fourth sliding hole (64). On both sides of the lower surface of the second sliding block (62) near the fourth sliding hole (64) and the fixed seat (66), third springs (63) are arranged.

9. The integral low-noise flexible sprocket according to claim 7, wherein: Control components (7) are arranged at positions near the upper part of the air chamber (41) on the inner walls of the air outlet pipes (47). The control components (7) include fifth sliding grooves (71) formed at positions near the upper part of the air chamber (41) on the inner walls of the air outlet pipes (47). A third sliding block (72) is slidably connected inside the fifth sliding groove (71). A second through hole (73) is formed in one side of the upper surface of the third sliding block (72). Second installation grooves (75) are formed on the sides of the inner walls of the third sliding grooves (610) away from the first sliding plate (611), and the first U-shaped groove (57) is close to the fifth sliding groove (71) on the other side. Second rotating plates (76) are rotatably connected inside the second installation grooves (75). Fourth sliding rails (78) are formed at the lower ends of the second rotating plates (76). Second straight rods (79) are fixedly connected to the sides of the outer surfaces of the first sliding plates (611) near the fourth sliding rails (78), and one ends of the second straight rods (79) are slidably connected inside the fourth sliding rails (78). Third sliding rails (77) are formed at the upper ends of the second rotating plates (76). First straight rods (74) are fixedly connected to the sides of the outer surfaces of the other third sliding blocks (72) near the second installation grooves (75), and one ends of the first straight rods (74) extend into the second installation grooves (75) and are slidably connected to the third sliding rails (77).

10. The integral low-noise flexible sprocket according to claim 9, characterized in that: One-way components (8) are arranged inside the third sliding blocks (72). The one-way components (8) include fifth sliding holes (81) formed inside the third sliding blocks (72) between the third sliding blocks (72) and the first straight rods (74). Second sliding covers (82) are slidably connected inside the fifth sliding holes (81). Fifth springs (84) are formed on the lower surfaces of the second sliding covers (82). Second through ports (86) are formed at the upper ends of the inner walls of the fifth sliding holes (81). Four uniformly distributed second arc-shaped through ports (83) are formed on the outer sides of the lower ends of the inner walls of the fifth sliding holes (81). Four uniformly distributed second U-shaped grooves (85) are formed on the inner circular surfaces of the fifth sliding holes (81).

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