A quick-mountable cross-flow fan blade

Abstract

This invention discloses a quick-installable cross-flow fan blade, including an impeller. A sleeve is fixedly mounted on one side of the impeller, and a rotating shaft is movably mounted inside the sleeve. A limiting component for clamping the rotating shaft is provided inside the sleeve. Grooves are symmetrically formed on both sides of the sleeve, and positioning components for positioning the limiting component are provided in the grooves. The quick-installable cross-flow fan blade provided by this invention utilizes the cooperation of a rotating cylinder, a frustum, and a limiting plate. The rotation of the rotating cylinder causes the limiting plate to abut against the rotating shaft, achieving contact and limiting between the rotating shaft and the sleeve. The contact and fixation of the rotating shaft and the sleeve can be achieved simply by rotating the rotating cylinder, making the operation convenient and quick.

Description

Technical Field

[0001] This invention relates to the field of cross-flow fan blade technology, specifically a cross-flow fan blade that can be quickly installed. Background Technology

[0002] A cross-flow fan blade is a multi-bladed, long cylindrical impeller with forward-curved multi-wing blades, allowing airflow to pass through the impeller and reach long distances. It is widely used in equipment such as air conditioning units, air conditioning fans, and air curtains. Air enters the blade cascade from the open part of the impeller, passes through the interior of the impeller, and is then discharged into the volute from the other side of the blade cascade, forming the working airflow. The airflow velocity field inside the impeller is unstable, with a vortex present. This causes a circulating flow at the impeller output end, which in turn affects the performance and efficiency of the fan.

[0003] In existing technology, the installation of cross-flow fan blades is usually achieved by fitting a sleeve at one end onto the outside of a rotating shaft and fixing it to the rotating shaft with screws. One end of the screw abuts against the outside of the rotating shaft. Subsequently, the rotation of the rotating shaft can drive the sleeve and fan blades to rotate synchronously through the screws. However, the fan blades will generate a certain amount of vibration during actual operation. Over time, this can cause the screws and rotating shaft to loosen. This will cause the sleeve and fan blades to vibrate during rotation. If the screw completely disengages from the rotating shaft, the sleeve and fan blades will stop rotating. This will cause a significant decrease in the air supply effect of air conditioning and other equipment, or even complete failure, seriously affecting the normal use of the equipment.

[0004] Therefore, it is necessary to design a cross-flow fan blade that can ensure long-term contact between the sleeve and the rotating shaft. Summary of the Invention

[0005] The purpose of this invention is to provide a cross-flow fan blade that can be quickly installed, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cross-flow fan blade that can be quickly installed, comprising an impeller, a sleeve fixedly disposed on one side of the impeller, a rotating shaft movably disposed inside the sleeve, a limiting component for clamping the rotating shaft disposed inside the sleeve, and grooves axially symmetrically formed on both sides of the sleeve, wherein a positioning component for positioning the limiting component is disposed inside the groove.

[0007] As a further aspect of the present invention: the limiting component includes a rotating cylinder, which is threadedly connected to the opening of the sleeve. A ring is fixedly disposed inside the sleeve, and a plurality of limiting plates are arranged in a ring array on the outer side of the ring. The limiting plates are made of an elastic material and are movably abutted against the rotating shaft. The bottom of the rotating cylinder is located at the sleeve and a frustum is fixedly disposed at its end. The inner wall of the frustum is movably abutted against the outer side of the limiting plate.

[0008] As a further embodiment of the present invention: the positioning component includes a movable column, an inclined plate fixedly disposed on one side of the movable column, a movable ring fixedly sleeved on the outer side of the rotating cylinder, the movable ring movably abutting against the inclined plate, a fixed cylinder horizontally fixedly disposed in the groove, a movable cylinder movably disposed in the fixed cylinder, the movable column movably disposed in the movable cylinder, a fixed plate fixedly disposed on the side of the movable cylinder away from the movable column, a circular plate fixedly disposed on the side of the movable column away from the inclined plate, the circular plate slidably connected to the movable cylinder, and a return spring fixedly disposed between the circular plate and the fixed plate.

[0009] As a further embodiment of the present invention: a slot is provided on the outer side of the fixed cylinder, and a lifting plate is movably abutted in the slot. The lifting plate is movably disposed in the movable cylinder. A connecting plate is fixedly connected between the lifting plate and the fixed plate. The connecting plate is made of an elastic material. The lifting plate has a square slot, and the round plate movably passes through the square slot and movably abuts against one side of the lifting plate.

[0010] As a further aspect of the present invention: the movable column has an inclined groove on the side near the lifting plate, the movable column moves through the square groove and the inclined groove moves into contact with the lifting plate.

[0011] As a further embodiment of the present invention: the sleeve is provided with a through hole in the groove, a moving rod is fixedly provided at the end of the moving cylinder away from the inclined plate, the moving rod movably passes through the fixed cylinder and is slidably connected with the through hole, a first spring is fixedly connected between the end of the moving cylinder and the inner wall of the fixed cylinder, and the moving rod is movably disposed in the middle of the first spring.

[0012] As a further embodiment of the present invention: a positioning plate is fixedly provided on the inner wall of the movable cylinder, and a movable plate is fixedly provided on the outer side of the movable column, and the movable plate and the positioning plate are movably pressed together.

[0013] As a further embodiment of the present invention: a horizontal plate is fixedly arranged above the groove, the horizontal plate is fixedly connected to the sleeve, vertical rods are fixedly arranged axially symmetrically on both sides of the horizontal plate, a rotating plate is movably sleeved on the outside of the vertical rod, one side of the rotating plate is movably abutting against the outside of the rotating cylinder, and a second spring is fixedly connected between the two rotating plates on the side away from the rotating cylinder.

[0014] As a further embodiment of the present invention: a horizontal groove is provided in the center of the horizontal plate, a lead screw is rotatably provided in the horizontal groove and the threads on both sides of the lead screw are in opposite directions, push rods are axially symmetrically connected on both sides of the lead screw, the push rods are slidably connected to the horizontal groove, and the push rods are movably abutting against the rotating plate.

[0015] As a further embodiment of the present invention: a gear is fixedly sleeved on the outer side of the center of the lead screw, and a rack is fixedly installed on the outer side of the moving cylinder, wherein the gear meshes with the rack for transmission.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the interaction of the rotating cylinder, the frustum, and the limiting plate, when the rotating cylinder rotates, it can drive the limiting plate to contact the rotating shaft, thereby achieving precise positioning between the rotating shaft and the sleeve;

[0018] 2. The movement of the movable column and the inclined plate creates a contacting action on the moving ring, thereby preventing the moving ring from moving in the opposite direction. This further ensures a tight contact between the rotating shaft and the sleeve.

[0019] 3. The contact between the rotating rod and the rotating cylinder prevents the rotating cylinder from rotating, ensuring that the rotating cylinder does not rotate relative to the sleeve, and at the same time preventing relative sliding between the contact surfaces of the rotating shaft and the sleeve. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the sleeve structure in this invention;

[0022] Figure 3 for Figure 2 Enlarged diagram of part A in the middle;

[0023] Figure 4 This is a schematic diagram of the internal structure of the sleeve in this invention;

[0024] Figure 5 This is a schematic diagram of the external structure of the fixed cylinder in this invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the fixed cylinder in this invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the movable cylinder in this invention;

[0027] Figure 8 for Figure 7 Enlarged diagram of section B;

[0028] Figure 9 This is a schematic diagram of the transverse groove in the present invention;

[0029] Figure 10 This is a schematic diagram of the gear structure in this invention;

[0030] In the diagram: 1. Impeller; 2. Sleeve; 201. Groove; 202. Through hole; 3. Rotating shaft; 4. Limiting assembly; 41. Rotating cylinder; 42. Ring; 43. Limiting plate; 44. Frustum; 5. Positioning assembly; 51. Movable column; 511. Inclined groove; 52. Inclined plate; 53. Moving ring; 6. Fixed cylinder; 61. Groove; 7. Moving cylinder; 8. Fixed plate; 9. Circular plate; 10. Return spring; 11. Lifting plate; 111. Square groove; 12. Connecting plate; 13. Moving rod; 14. First spring; 15. Positioning plate; 16. Moving plate; 17. Horizontal plate; 171. Horizontal groove; 18. Vertical rod; 19. Rotating plate; 20. Second spring; 21. Lead screw; 22. Push rod; 23. Gear; 24. Rack. Detailed Implementation

[0031] Please see Figures 1-10 In this embodiment of the invention, a quick-installable cross-flow fan blade includes an impeller 1. A sleeve 2 is fixedly installed on one side of the impeller 1, and a rotating shaft 3 is movably installed inside the sleeve 2. A limiting component 4 for clamping the rotating shaft 3 is provided inside the sleeve 2. Grooves 201 are axially symmetrically opened on both sides of the sleeve 2, and positioning components 5 for positioning the limiting component 4 are provided inside the grooves 201. One side of the impeller 1 is rotatably connected to an internal component of an air conditioner or other equipment. The sleeve 2 is sleeved on the outside of the rotating shaft 3. The limiting component 4 clamps and limits the rotating shaft 3, so that the sleeve 2 and the rotating shaft 3 abut together. The other side of the rotating shaft 3 is connected to a motor installed inside the equipment. The motor can drive the rotating shaft 3, the sleeve 2, and the impeller 1 to rotate synchronously, so that airflow is generated at the output end of the impeller 1. The limiting component 4 clamps the rotating shaft 3, and then the positioning component 5 positions the limiting component 4. This can prevent the sleeve 2 and the rotating shaft 3 from loosening during use.

[0032] See Figure 2 and Figure 4As shown, in this embodiment, preferably, the limiting component 4 includes a rotating cylinder 41, which is threadedly connected to the opening of the sleeve 2. A ring 42 is fixedly disposed inside the sleeve 2, and a plurality of limiting plates 43 are arranged in a ring array on the outer side of the ring 42. The limiting plates 43 are made of an elastic material and are movably abutted against the rotating shaft 3. The bottom of the rotating cylinder 41 is located at the sleeve 2, and a frustum 44 is fixedly disposed at its end. The inner wall of the frustum 44 is movably abutted against the outer side of the limiting plate 43. When the rotating cylinder 41 is rotated, it moves downward along the sleeve 2, thereby causing the frustum 44 to move downward. The truncated cone 44 moves downward and abuts against the outer side of the limiting plate 43, thereby driving multiple limiting plates 43 to move closer to the rotating shaft 3 until the inner side of the limiting plate 43 abuts against the outer wall of the rotating shaft 3. This makes the rotating shaft 3 and the limiting plate 43 abut together. The rotation of the rotating shaft 3 will drive the limiting plate 43, the ring 42 and the sleeve 2 to rotate synchronously. In this step, the abutment and fixation of the rotating shaft 3 and the sleeve 2 can be achieved simply by rotating the rotating cylinder 41. Compared with the traditional method of using screws to abut against the rotating shaft 3, the operation is more convenient and faster, because the method of using screws requires the operator to carry a screwdriver to tighten the screws during installation, which is inconvenient for the operator.

[0033] See figure Figures 2-3 and Figure 5As shown, in this embodiment, preferably, the positioning component 5 includes a movable column 51, an inclined plate 52 fixedly disposed on one side of the movable column 51, a movable ring 53 fixedly sleeved on the outer side of the rotating cylinder 41, the movable ring 53 movably abutting against the inclined plate 52, a fixed cylinder 6 horizontally fixedly disposed in the groove 201, a movable cylinder 7 movably disposed in the fixed cylinder 6, the movable column 51 movably disposed in the movable cylinder 7, a fixed plate 8 fixedly disposed on the side of the movable cylinder 7 away from the movable column 51, a circular plate 9 fixedly disposed on the side of the movable column 51 away from the inclined plate 52, the circular plate 9 slidably connected to the movable cylinder 7, and a return spring 10 fixedly disposed between the circular plate 9 and the fixed plate 8; the rotation of the rotating cylinder 41 to achieve descent is achieved by a thread. When the descent of the rotating cylinder 41 causes the limiting plate 43 to abut against the rotating shaft 3, the threaded contact portion between the rotating cylinder 41 and the sleeve 2 reaches its end. At this time, the rotating cylinder 41 can no longer descend along the sleeve 2. The movement of the rotating cylinder 41 ensures that the limiting plate 43 keeps clamping the rotating shaft 3 as long as the rotating cylinder 41 does not move upward along the sleeve 2. The rotating cylinder 41 moves downward while rotating, which will cause the moving ring 53 to move downward and abut against the inclined plate 52. This will cause the inclined plate 52 and the movable column 51 to move away from the rotating shaft 3 along the moving cylinder 7 and the fixed cylinder 6 set in the groove 201. The movement of the movable column 51 will cause the circular plate 9 to move, thereby compressing the return spring 10. The fixed plate 8 provides support for the return spring 10. The inclined plate 52 moves to one side, causing the moving ring 53 to move below the inclined plate 52. When the moving ring 53 moves below the inclined plate 52, the inclined plate 52 will lose the abutting effect of the moving ring 53. During the recovery process, the return spring 10 will drive the circular plate 9, the movable column 51 and the inclined plate 52 to move to the initial position. The inclined plate 52 will then move above the moving ring 53, preventing the moving ring 53 from moving upward. This ensures that the limiting plate 43 can form a stable clamp on the rotating shaft 3.

[0034] See Figures 5-7As shown, in this embodiment, preferably, a slot 61 is provided on the outer side of the fixed cylinder 6, and a lifting plate 11 is movably abutted within the slot 61. The lifting plate 11 is movably disposed within the movable cylinder 7, and a connecting plate 12 is fixedly connected between the lifting plate 11 and the fixed plate 8. The connecting plate 12 is made of an elastic material. The lifting plate 11 has a square slot 111, and the round plate 9 movably passes through the square slot 111 and movably abuts against one side of the lifting plate 11. In the initial state, the top of the lifting plate 11 abuts against one side of the slot 61, and the round plate 9 abuts against the side of the lifting plate 11 near the fixed plate 8, so the movable column 51 can remain stable. The downward movement of the rotating cylinder 41 will drive... The moving ring 53 moves downward, thereby driving the inclined plate 52 and the movable column 51 to move into the groove 201, thereby compressing the return spring 10. At this time, the lifting plate 11 moves downward so that the lifting plate 11 does not abut against the groove 61. The downward movement of the lifting plate 11 will cause the connecting plate 12 to deflect downward slightly. Then, the moving cylinder 7 moves along the fixed cylinder 6 towards the moving ring 53. The moving fixed plate 8, the connecting plate 12, and the lifting plate 11 of the moving cylinder 7 move together synchronously. At the same time, when the moving ring 53 no longer abuts against the inclined plate 52, under the action of the return spring 10, it will drive the circular plate 9, the movable column 51, and the inclined plate 52 to move towards the side closer to the moving ring 53 until they abut against the top of the moving ring 53, thereby restricting the movement of the moving ring 53.

[0035] See Figure 7 As shown, in this embodiment, preferably, the movable column 51 has an inclined groove 511 on the side near the lifting plate 11. The movable column 51 moves through the square groove 111 and the inclined groove 511 moves against the lifting plate 11. When the movable column 51 moves closer to the fixed plate 8, the side of the movable column 51 with the inclined groove 511 moves through the square groove 111 and the inclined groove 511 part will abut against the lifting plate 11, thereby driving the lifting plate 11 to move downward to release the abutment with the groove 61. This step links the release of the lifting plate 11 from the groove 61 with the movement of the movable column 51, making the operation more convenient and faster.

[0036] See Figures 2-3 and Figures 5-7As shown, in this embodiment, preferably, the sleeve 2 has a through hole 202 in the groove 201, and a moving rod 13 is fixedly installed at the end of the moving cylinder 7 away from the inclined plate 52. The moving rod 13 movably passes through the fixed cylinder 6 and is slidably connected to the through hole 202. A first spring 14 is fixedly connected between the end of the moving cylinder 7 and the inner wall of the fixed cylinder 6, and the moving rod 13 is movably disposed in the middle of the first spring 14. In the initial state, the top of the lifting plate 11 abuts against the inner wall of the slot 61, the first spring 14 is in a compressed state, and the moving ring 53 moves downward, driving the inclined plate 52 and the moving column 51 to move through the square groove 111 towards the side closer to the fixed plate 8. During the movement of the moving column 51, it passes through... The inclined groove 511 drives the lifting plate 11 to move downwards to release the contact with the groove 61. When the moving ring 53 is no longer in contact with the inclined plate 52, the first spring 14 returns to its original state and drives the moving cylinder 7, the fixed plate 8, the connecting plate 12, the return spring 10, the circular plate 9, the moving rod 13, the movable column 51, and the inclined plate 52 to move together towards the moving ring 53 until the inclined plate 52 contacts the top of the moving ring 53. Then the return spring 10 will drive the movable column 51 and the inclined plate 52 to move again towards the rotating shaft 3, so that more of the bottom area of ​​the inclined plate 52 can contact the top of the moving ring 53, which can better ensure that the moving ring 53 no longer moves upwards. The end of the moving rod 13 moves relative to the through hole 202.

[0037] See Figure 7 and Figure 8As shown, in this embodiment, preferably, a positioning plate 15 is fixedly provided on the inner wall of the movable cylinder 7, and a movable plate 16 is fixedly provided on the outer side of the movable column 51. The movable plate 16 and the positioning plate 15 are movably pressed together. In the initial state, the positioning plate 15 is in contact with the movable plate 16. Under the action of the movable ring 53, the movable column 51 moves closer to the fixed plate 8, which will drive the movable plate 16 to move away from the positioning plate 15. At this time, the movable column 51 will drive the lifting plate 11 to move downward to release the contact with the slot 61. The length of the slot 61 is much larger than the width of the top of the lifting plate 11. Under the action of the first spring 14, the movable cylinder 7 and the movable column 51 will move synchronously. Then, the return spring 10 will also drive the movable column 51 to move relative to the movable cylinder 7 until the movable plate 16 abuts against the positioning plate 15 again. At this time, the movable ring 53 and the inclined plate 52 are in contact. When needed... When overhauling the equipment, it is necessary to release the contact between the sleeve 2 and the rotating shaft 3. Pull the moving rod 13 outward along the through hole 202. The moving rod 13 will drive the moving cylinder 7, the fixed plate 8, the connecting plate 12, the lifting plate 11, and the movable column 51 to move synchronously. The pulling distance of the moving rod 13 should be greater than the distance that the first spring 14 drives the moving cylinder 7 to move, so that the lifting plate 11 moves to the other side of the groove 61. At this time, the inclined plate 52 no longer abuts against the moving ring 53. Rotating the rotating cylinder 41 in the opposite direction can move the rotating cylinder 41 and the frustum 44 upward to release the contact with the positioning plate 15, so that the sleeve 2 and the rotating shaft 3 can be released from the limit. Then, the force applied to the moving rod 13 is released, and the first spring 14 will drive the moving cylinder 7 and the movable column 51 to move synchronously until the lifting plate 11 moves to the other side of the groove 201 and abuts. At this time, the position of the moving cylinder 7 and the movable column 51 returns to the initial state.

[0038] See Figures 2-3 and Figure 9 As shown, in this embodiment, preferably, a horizontal plate 17 is fixedly arranged above the groove 201. The horizontal plate 17 is fixedly connected to the sleeve 2. Vertical rods 18 are axially symmetrically fixed on both sides of the horizontal plate 17. A rotating plate 19 is movably sleeved on the outside of the vertical rod 18. One side of the rotating plate 19 is movably abutting against the outside of the rotating cylinder 41. A second spring 20 is fixedly connected between the two rotating plates 19 on the side away from the rotating cylinder 41. When the second spring 20 is in the normal extension and contraction state, one end of both rotating plates 19 is abutting against the outside of the rotating cylinder 41. This can further prevent the rotating cylinder 41 from rotating axially. When it is necessary to release the abutment between the rotating plate 19 and the rotating cylinder 41, the ends of the two rotating plates 19 away from the rotating cylinder 41 are brought closer to each other, which will cause the other end of the rotating plate 19 to rotate around the vertical rod 18 and thus release the abutment from the rotating cylinder 41. At this time, the rotating cylinder 41 can be rotated to release the abutment between the sleeve 2 and the rotating shaft 3.

[0039] See Figures 9-10As shown, in this embodiment, preferably, a horizontal groove 171 is provided in the center of the horizontal plate 17. A lead screw 21 is rotatably arranged in the horizontal groove 171, and the threads on both sides of the lead screw 21 have opposite directions. Push rods 22 are axially symmetrically connected on both sides of the lead screw 21. The push rods 22 are slidably connected to the horizontal groove 171 and are in movable contact with the rotating plate 19. In the initial state, the second spring 20 is in a compressed state. When the lead screw 21 is rotated, the rotation of the lead screw 21 will drive the push rods 22 on both sides to move away from each other along the horizontal groove 171, so that the second spring 20 returns to its original state, thereby driving the other side of the rotating rod to rotate and contact the rotating cylinder 41, thus preventing the rotating cylinder 41 from rotating.

[0040] See Figures 9-10 As shown, in this embodiment, preferably, a gear 23 is fixedly sleeved on the outer side of the center of the lead screw 21, and a rack 24 is fixedly installed on the outer side of the moving cylinder 7. The gear 23 meshes with the rack 24 for transmission. When the moving cylinder 7 moves towards the rotating cylinder 41 under the action of the first spring 14, the rack 24 will drive the gear 23 to rotate. The rotation of the gear 23 will drive the lead screw 21 to rotate, causing the push rods 22 to move away from each other. This will cause the rotating rod to clamp and abut against the rotating cylinder 41. The movement of the moving cylinder 7 and the movable column 51 will drive the inclined plate 52 to abut and limit the moving ring 53, further ensuring the stability of the abutment between the sleeve 2 and the rotating shaft 3.

[0041] The working principle of this invention is as follows: One side of the impeller 1 is rotatably connected to an internal component of an air conditioner or similar equipment. The sleeve 2 is fitted onto the outside of the rotating shaft 3. When the rotating cylinder 41 is rotated, it moves downward along the sleeve 2, thereby causing the frustum 44 to move downward. The frustum 44 moves downward and abuts against the outer side of the limiting plate 43, thereby causing multiple limiting plates 43 to move closer to the rotating shaft 3 until the inner side of the limiting plate 43 abuts against the outer wall of the rotating shaft 3. This makes the rotating shaft 3 and the limiting plate 43 abut together. The rotation of the rotating shaft 3 will cause the limiting plate 43, the ring 42, and the sleeve 2 to rotate synchronously. As the rotating cylinder 41 rotates and moves downward, it will cause the moving ring 53 to move downward and abut against the inclined plate 52. This causes the inclined plate 52 and the movable column 51 to move away from the rotating shaft 3 along the movable cylinder 7 and fixed cylinder 6 set in the groove 201. In the initial state, the positioning plate 15 is in contact with the movable plate 16. Under the action of the movable ring 53, the movable column 51 moves closer to the fixed plate 8, which will cause the movable plate 16 to move away from the positioning plate 15. At this time, the movable column 51 will cause the lifting plate 11 to move downward to release the contact with the groove 61. The length of the groove 61 is much larger than the width of the top of the lifting plate 11. Under the action of the first spring 14, the movable cylinder 7 and the movable column 51 will move synchronously. Then the return spring 10 will also cause the movable column 51 to move relative to the movable cylinder 7 until the movable plate 16 moves again. The sleeve 2 abuts against the positioning plate 15. At this time, the moving ring 53 and the inclined plate 52 are in contact. When maintenance is required, the contact between the sleeve 2 and the rotating shaft 3 needs to be released. Pull the moving rod 13 outward along the through hole 202. The moving rod 13 will drive the moving cylinder 7, the fixed plate 8, the connecting plate 12, the lifting plate 11, and the movable column 51 to move synchronously. The pulling distance of the moving rod 13 should be greater than the distance that the first spring 14 drives the moving cylinder 7 to move, so that the lifting plate 11 moves to the other side of the slot 61. At this time, the inclined plate 52 no longer abuts against the moving ring 53. Reverse rotation of the rotating cylinder 41 can realize the upward movement of the rotating cylinder 41 and the frustum 44 to release the contact with the limiting plate 43, so that the sleeve 2 can be released from the rotating shaft 3. After the limit is reached, the force applied to the moving rod 13 is released. The first spring 14 will drive the moving cylinder 7 and the movable column 51 to move synchronously until the lifting plate 11 moves to the other side of the groove 201 and abuts. At this time, the position of the moving cylinder 7 and the movable column 51 returns to the initial state. At the same time, as the moving cylinder 7 moves towards the rotating cylinder 41 under the action of the first spring 14, the rack 24 will drive the gear 23 to rotate. The rotation of the gear 23 will drive the lead screw 21 to rotate, causing the push rod 22 to move away from each other. The second spring 20 returns to its state, thereby driving the other side of the rotating rod to rotate and abut against the rotating cylinder 41, preventing the rotating cylinder 41 from rotating and further ensuring the stability of the abutment between the sleeve 2 and the rotating shaft 3.

Claims

1. A quick-installable cross-flow fan blade, comprising an impeller (1), characterized in that, A sleeve (2) is fixedly installed on one side of the impeller (1). A rotating shaft (3) is movably installed inside the sleeve (2). A limiting component (4) for clamping the rotating shaft (3) is installed inside the sleeve (2). Grooves (201) are axially symmetrically opened on both sides of the sleeve (2). A positioning component (5) for positioning the limiting component (4) is installed in the groove (201). The limiting component (4) includes a rotating cylinder (41). The rotating cylinder (41) is threadedly connected to the opening of the sleeve (2). A ring (42) is fixedly installed inside the sleeve (2). Multiple limiting plates (43) are arranged in a ring array on the outer side of the ring (42). The limiting plates (43) are made of elastic material. Made of materials, the limiting plate (43) is movably abutted against the rotating shaft (3), the bottom of the rotating cylinder (41) is located inside the sleeve (2) and a frustum (44) is fixedly provided at its end, the inner wall of the frustum (44) is movably abutted against the outer side of the limiting plate (43), the positioning component (5) includes a movable column (51), an inclined plate (52) is fixedly provided on one side of the movable column (51), a movable ring (53) is fixedly sleeved on the outer side of the rotating cylinder (41), the movable ring (53) is movably abutted against the inclined plate (52), a fixed cylinder (6) is horizontally fixedly provided in the groove (201), a movable cylinder (7) is movably provided in the fixed cylinder (6), and the movable column (51) is movably provided in the groove (201). Inside the movable cylinder (7), a fixed plate (8) is fixedly installed on the side of the movable cylinder (7) away from the movable column (51), and a circular plate (9) is fixedly installed on the side of the movable column (51) away from the inclined plate (52). The circular plate (9) is slidably connected to the movable cylinder (7), and a return spring (10) is fixedly installed between the circular plate (9) and the fixed plate (8). A slot (61) is opened on the outside of the fixed cylinder (6), and a lifting plate (11) is movably abutted in the slot (61). The lifting plate (11) is movably installed inside the movable cylinder (7), and a connecting plate (12) is fixedly connected between the lifting plate (11) and the fixed plate (8). The connecting plate (12) is made of an elastic material. The lifting plate (11) is provided with a square groove (111). The circular plate (9) movably passes through the square groove (111) and movably abuts against one side of the lifting plate (11). The movable column (51) is provided with an inclined groove (511) on the side near the lifting plate (11). The movable column (51) movably passes through the square groove (111) and the inclined groove (511) movably abuts against the lifting plate (11). The sleeve (2) is provided with a through hole (202) in the groove (201). A movable rod (13) is fixedly provided at the end of the movable cylinder (7) away from the inclined plate (52). The movable rod (13) movably passes through the fixed cylinder (6) and is slidably connected to the through hole (202).A first spring (14) is fixedly connected between the end of the movable cylinder (7) and the inner wall of the fixed cylinder (6). The movable rod (13) is movably disposed in the middle of the first spring (14). A positioning plate (15) is fixedly disposed on the inner wall of the movable cylinder (7). A movable plate (16) is fixedly disposed on the outer side of the movable column (51). The movable plate (16) and the positioning plate (15) are movably pressed together.

2. The cross-flow fan blade that can be quickly installed according to claim 1, characterized in that, A horizontal plate (17) is fixedly installed above the groove (201). The horizontal plate (17) is fixedly connected to the sleeve (2). Vertical rods (18) are fixedly installed axially symmetrically on both sides of the horizontal plate (17). A rotating plate (19) is movably sleeved on the outside of the vertical rod (18). One side of the rotating plate (19) is movably abutting against the outside of the rotating cylinder (41). A second spring (20) is fixedly connected between the two rotating plates (19) on the side away from the rotating cylinder (41).

3. The cross-flow fan blade that can be quickly installed according to claim 2, characterized in that, A transverse groove (171) is provided in the center of the transverse plate (17). A lead screw (21) is rotatably arranged in the transverse groove (171) with opposite threads on both sides. Push rods (22) are axially symmetrically connected on both sides of the lead screw (21). The push rods (22) are slidably connected to the transverse groove (171) and are in movable contact with the rotating plate (19).

4. The cross-flow fan blade that can be quickly installed according to claim 3, characterized in that, A gear (23) is fixedly sleeved on the outer side of the center of the lead screw (21), and a rack (24) is fixedly installed on the outer side of the moving cylinder (7). The gear (23) meshes with the rack (24) for transmission.

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