阅读说明：本技术 一种安装快速到位的导叶调节器结构 (Guide vane regulator structure capable of being installed quickly in place ) 是由 韩春江 钟仁志 袁军 姚莹海 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种安装快速到位的导叶调节器结构,包括外壳体、若干个导叶和若干个齿轮,所述导叶包括连接轴和叶片,连接轴穿过外壳体的侧壁上的连接孔伸出外壳体外侧,连接轴与外壳体转动连接,外壳体上设有限制连接轴沿连接轴的轴线方向移动的限位结构,齿轮固定在对应的连接轴上；限位结构包括若干个限位轴杆,外壳体的端面上设有若干个容纳孔,限位轴杆设置在对应的容纳孔内,限位轴杆的一端伸出容纳孔且深入到连接孔内,所述限位轴杆朝向外壳体轴线的一侧设有导向斜面,容纳孔内设有用于使限位轴杆保持伸出状态的第一弹簧。本发明提供了一种安装快速到位的导叶调节器结构,可以实现对导叶的快速安装,提高安装效率。(The invention discloses a guide vane adjuster structure capable of being installed quickly in place, which comprises an outer shell, a plurality of guide vanes and a plurality of gears, wherein each guide vane comprises a connecting shaft and a blade, the connecting shaft penetrates through a connecting hole in the side wall of the outer shell and extends out of the outer side of the outer shell, the connecting shaft is rotatably connected with the outer shell, a limiting structure for limiting the connecting shaft to move along the axial direction of the connecting shaft is arranged on the outer shell, and the gears are fixed on the corresponding connecting shafts; the limiting structure comprises a plurality of limiting shaft rods, a plurality of accommodating holes are formed in the end face of the outer shell, the limiting shaft rods are arranged in the corresponding accommodating holes, one ends of the limiting shaft rods extend out of the accommodating holes and penetrate into the connecting holes, guide inclined planes are arranged on the limiting shaft rods facing one sides of the axes of the outer shell, and first springs used for enabling the limiting shaft rods to keep in the extending state are arranged in the accommodating holes. The invention provides a guide vane adjuster structure capable of being installed quickly in place, which can realize quick installation of guide vanes and improve the installation efficiency.)

1. A guide vane adjuster structure capable of being installed quickly in place is characterized by comprising an outer shell, a plurality of guide vanes and a plurality of gears, wherein the plurality of guide vanes are arranged along the axial direction of the outer shell in a circumferential mode, each guide vane comprises a connecting shaft and a blade, the blades are arranged in the outer shell, the connecting shafts penetrate through connecting holes in the side wall of the outer shell and extend out of the outer shell, the connecting shafts are rotatably connected with the outer shell, limiting structures for limiting the connecting shafts to move along the axial direction of the connecting shafts are arranged on the outer shell, the gears correspond to the guide vanes one by one, and the gears are fixed on the corresponding connecting shafts; limiting structure sets up between gear and blade, and limiting structure includes the spacing axostylus axostyle of a plurality of, is equipped with a plurality of accommodation hole on the terminal surface of shell body, and spacing axostylus axostyle sets up in the accommodation hole that corresponds, spacing axostylus axostyle and accommodation hole sliding connection, the accommodation hole is stretched out and deep into in the connecting hole to the one end of spacing axostylus axostyle, spacing axostylus axostyle is equipped with the direction inclined plane towards one side of outside shell axis, is equipped with the first spring that is used for making spacing axostylus axostyle keep the state of stretching out in the accommodation hole.

2. The guide vane adjuster structure of claim 1, wherein the limiting structure further comprises a plurality of limiting check rings, the limiting check rings are in one-to-one correspondence with the guide vanes, the limiting check rings are sleeved on the corresponding connecting shafts and fixed on the outer side wall of the outer shell, and the limiting check rings are arranged between the gear and the blades.

3. The guide vane adjuster structure of claim 2, wherein the connecting shaft is provided with a second bearing, the connecting shaft is rotatably connected with the outer housing through the second bearing, an inner ring of the second bearing is fixed with the connecting shaft, and the limiting shaft rod and the limiting retainer ring are respectively contacted with an outer ring side wall of the corresponding second bearing.

4. The structure of claim 1, wherein a limiting shaft is disposed on each side of the connecting shaft.

5. The guide vane adjuster structure of claim 1, 2, 3 or 4, wherein the limiting structure further comprises an inflator, the outer side wall of the limiting shaft is connected with the inner side wall of the receiving hole in a sealing manner, one end of the receiving hole far away from the connecting shaft is sealed, and all the receiving holes are communicated with the same inflator.

6. The guide vane adjuster structure is characterized by further comprising a gear ring, an outer retainer ring, a driving mechanism and an outer retainer ring for limiting the gear ring to move along the axis direction of the outer shell, wherein the gear ring is sleeved on the outer side of the outer shell and is rotatably connected with the outer shell, the outer retainer ring is arranged on the outer side of the outer shell and is connected with the outer shell through bolts, one end of the outer retainer ring is in contact with the end face of the gear ring, a gear is meshed with the outer retainer ring, and an output shaft of the driving mechanism is connected with a connecting shaft of one of the guide vanes.

7. The guide vane adjuster structure for quick and in-place installation according to claim 6, wherein the inner side of the gear ring is provided with a first bearing, an outer ring of the first bearing is fixed with the gear ring, one end of an outer retainer ring is tightly pressed on an end face of an inner ring of the first bearing, and the outer retainer ring limits the position of the gear ring by limiting the position of the first bearing.

8. The guide vane adjuster structure as claimed in claim 6, wherein the inflator comprises an annular cylinder and an annular piston, the annular piston is slidably connected to the annular cylinder, the annular cylinder and the annular piston are sleeved outside the outer housing, and the outer retainer ring compresses the annular piston.

9. The guide vane adjuster structure as claimed in claim 8, wherein a second spring is disposed in the annular cylinder, and both ends of the second spring are connected to the annular piston and the annular cylinder respectively, and the second spring has a stiffness coefficient greater than that of the first spring.

10. A quick-to-install vane adjuster structure as claimed in claim 1, 2, 3 or 4, wherein an end of the receiving hole remote from the connecting shaft is sealed by a sealing plug.

Technical Field

The invention relates to the technical field of axial flow fans, in particular to a guide vane regulator structure capable of being installed quickly in place.

Background

The axial flow fan is airflow in the same direction as the axis of the fan blade, and has very wide application. Flow fans are typically used in applications where flow requirements are high and pressure requirements are low. The axial fan fixes the position and moves the air. The inventor of this application has designed an axial fan of adjustable import stator, and according to the operating mode of difference, the stator regulator is adjusted, and a plurality of guide vane rotate certain angle, and the air current will be along the passageway circulation that becomes certain angle with the axial direction of admitting air. Fluid enters the motor cylinder after passing through the inlet guide vane regulator, the magnetic suspension motor directly drives the movable impeller to apply work to the fluid, and the energy of the fluid is increased and enters the stationary impeller along the axial direction. The stationary impeller guides the fluid, the pressure and the temperature of the fluid are reduced, the flow velocity is increased, and the thermal potential energy is converted into kinetic energy. Fluid passes through the tail cone after passing through the stationary impeller and enters the diffuser pipe. The kinetic energy of the fluid is converted into static pressure energy. However, the axial flow fan of adjustable import stator is because its stator needs autogiration, and its fixed knot constructs with transmission structure is complicated relatively, and the installation is more time-consuming, consequently, this application provides a stator regulator structure that the installation targets in place fast, can realize the quick installation to the stator, improves the installation effectiveness.

Chinese patent application publication No. CN1288350C, published as 2006, 12/06/titled as "counter-rotating axial flow fan with adjustable inlet guide vanes", discloses a counter-rotating axial flow fan with adjustable inlet guide vanes, which comprises a wind collector, the wind collector is sequentially connected with a first-stage fan outer cylinder, a second-stage fan outer cylinder and a diffusion cylinder, a first-stage motor, a first-stage movable blade, a second-stage movable blade and a second-stage motor are sequentially arranged, the motor is supported by an inner cylinder, the adjustable inlet guide vanes are mounted on the first-stage fan inner cylinder, and the adjustable inlet guide vanes can rotate within a positive and negative 30 ° of an original mounting angle. When the airflow which is finished by the air collector and the fairing flows through the adjustable inlet guide vane, the adjustable inlet guide vane twists and prerotates the airflow, then the airflow enters the first-stage movable vane, the second-stage movable vane and the fairing body in sequence according to the flow field speed and the airflow angle which are specified by the adjustable inlet guide vane, and flows out of the fan according to the designed pressure and flow. However, the inlet guide vane needs to be adjusted manually, and is not suitable for the axial flow fan with the guide vane automatically adjusted.

Disclosure of Invention

The invention provides a guide vane regulator structure which is quickly installed in place, can realize quick installation of guide vanes and improve the installation efficiency, in order to overcome the defects that the guide vanes of an axial flow fan with adjustable inlet guide vanes need to automatically rotate, the fixing structure and the transmission structure of the axial flow fan are relatively complex, and the installation is time-consuming.

In order to achieve the purpose, the invention adopts the following technical scheme:

a guide vane adjuster structure capable of being installed quickly in place comprises an outer shell, a plurality of guide vanes and a plurality of gears, wherein the plurality of guide vanes are arranged along the axial direction of the outer shell in a circumferential mode, each guide vane comprises a connecting shaft and a blade, the blades are arranged in the outer shell, the connecting shaft penetrates through a connecting hole in the side wall of the outer shell and extends out of the outer shell, the connecting shaft is rotatably connected with the outer shell, a limiting structure for limiting the connecting shaft to move along the axial direction of the connecting shaft is arranged on the outer shell, the gears correspond to the guide vanes one by one, and the gears are fixed on the corresponding connecting shafts; limiting structure sets up between gear and blade, and limiting structure includes the spacing axostylus axostyle of a plurality of, is equipped with a plurality of accommodation hole on the terminal surface of shell body, and spacing axostylus axostyle sets up in the accommodation hole that corresponds, spacing axostylus axostyle and accommodation hole sliding connection, the accommodation hole is stretched out and deep into in the connecting hole to the one end of spacing axostylus axostyle, spacing axostylus axostyle is equipped with the direction inclined plane towards one side of outside shell axis, is equipped with the first spring that is used for making spacing axostylus axostyle keep the state of stretching out in the accommodation hole.

In the above technical scheme, the blades of the guide vane are of a fan-shaped structure. When the guide vane is installed, the guide vane extends into the outer shell, the connecting shaft penetrates through the connecting hole of the outer shell, when the connecting shaft is installed in place, the limiting structure limits the connecting shaft to move along the axis direction of the connecting shaft, and then the gear is installed. The limiting structure can limit the guide vane to move along the axis direction of the connecting shaft, so that the guide vane can only rotate when in normal operation, and the axial position of the guide vane cannot deviate. When the stator needs to be installed, only the connecting shaft needs to penetrate through the connecting hole in the outer shell, the guide inclined plane enables the limiting shaft lever to contract inwards, and when the connecting shaft is installed in place, the limiting shaft lever automatically pops out to limit the connecting shaft. The structure realizes quick installation of the guide vane.

Preferably, the limiting structure further comprises a plurality of limiting check rings, the limiting check rings correspond to the guide vanes one by one, the limiting check rings are sleeved on the corresponding connecting shafts, the limiting check rings are fixed on the outer side wall of the outer shell, and the limiting check rings are arranged between the gear and the blades. The structure can reduce the processing degree of difficulty of shell body in connecting hole department, simultaneously through setting up spacing retaining ring alone, can dismantle, conveniently installs and dismantles the epaxial bearing of connecting.

Preferably, the connecting shaft is provided with a second bearing, the connecting shaft is rotatably connected with the outer shell through the second bearing, an inner ring of the second bearing is fixed with the connecting shaft, and the limiting shaft rod and the limiting retainer ring are respectively contacted with the outer ring side wall of the corresponding second bearing. The structure can realize the rotary connection of the connecting shaft and the outer shell.

Preferably, two sides of the connecting shaft are respectively provided with a limiting shaft rod. The structure can make the axial spacing of connecting axle more stable, and the connecting axle is difficult to drop, is difficult to rock.

Preferably, the limiting structure further comprises an inflator, the outer side wall of the limiting shaft rod is connected with the inner side wall of the accommodating hole in a sealing mode, one end, far away from the connecting shaft, of the accommodating hole is sealed, and all the accommodating holes are communicated with the same inflator. Among the above-mentioned technical scheme, the inflator pump communicates with all accommodation holes, the structure can realize the quick locking of limit structure and unblock, and can realize the flexible of all spacing axostylus axostyles through an inflator pump, conveniently installs, dismantles, changes and maintains all stator. When the inflator pump inflates air into the accommodating hole, the limiting shaft rod extends out, and when the inflator pump inhales air into the accommodating hole, the limiting shaft rod retracts. The first spring can keep the limiting shaft lever in a stretching state, and even if the inflator pump and the accommodating hole slightly leak air, the limiting shaft lever cannot retract, so that double insurance is formed between the limiting shaft lever and the inflator pump, and the connection reliability of the guide vane is ensured.

Preferably, the guide vane structure further comprises a gear ring, an outer retainer ring, a driving mechanism and an outer retainer ring used for limiting the gear ring to move along the axis direction of the outer shell, the gear ring is sleeved on the outer side of the outer shell and is rotationally connected with the outer shell, the outer retainer ring is arranged on the outer side of the outer shell and is connected with the outer shell through a bolt, one end of the outer retainer ring is in contact with the end face of the gear ring, a gear is meshed with the outer retainer ring, and an output shaft of the driving mechanism is connected with a connecting shaft of one guide vane.

Among the above-mentioned technical scheme, actuating mechanism is driving motor, drives the gear and the connecting axle rotation of being connected with actuating mechanism through actuating mechanism, and gear revolve can drive the ring gear and rotate, and the ring gear rotates and can drive all gears and rotate together again, and then drives all stator rotations, and the angle of blade changes when the stator rotates, and then adjusts the size of air inlet, realizes the regulation to the intake. When the guide vane is installed, the guide vane extends into the outer shell, the connecting shaft penetrates through the connecting hole of the outer shell, when the connecting shaft is installed in place, the limiting structure limits the connecting shaft to move along the axis direction of the connecting shaft, then the gear ring and the gear are installed, the gear ring is connected with the outer shell in a rotating mode, the gear is meshed with the gear ring, the output shaft of the driving mechanism is connected with the connecting shaft of one guide vane, and installation is completed. The gear and the connecting shaft are connected through a key groove structure and limited through a bolt and a washer at the end part. When the gear ring needs to be maintained, the gear ring can be detached independently for maintenance, and an independent gear can be detached for maintenance.

Preferably, the first bearing is arranged on the inner side of the gear ring, an outer ring of the first bearing is fixed with the gear ring, one end of the outer retainer ring is tightly pressed on the end face of the inner ring of the first bearing, and the outer retainer ring limits the position of the gear ring by limiting the position of the first bearing.

Preferably, the inflator comprises an annular inflator and an annular piston, the annular piston is connected with the annular inflator in a sliding mode, the annular inflator and the annular piston are sleeved on the outer side of the outer shell, and the annular piston is pressed by the outer retaining ring. The structure links the inflation and air suction states of the inflator pump and the locking relation of the outer check ring, and the limiting structure of the guide vane cannot be loosened as long as the gear ring is not detached, so that the stability of guide vane installation in the running state is ensured. And the gear ring is not disassembled, the transmission relation among all the gears always exists, and accidents are easy to occur in the disassembling process. When the gears and the guide vanes are dismounted, the gears and the guide vanes are independent from each other in transmission relation, and accidents are avoided.

Preferably, a second spring is arranged in the annular gas cylinder, two ends of the second spring are respectively connected with the annular piston and the annular gas cylinder, and the stiffness coefficient of the second spring is greater than that of the first spring. The structure may allow the second spring to expand and contract against the resistance of the first spring.

Preferably, an end of the receiving hole remote from the connecting shaft is sealed by a sealing plug. The structure facilitates the processing of the accommodating hole and ensures the air tightness.

The invention has the beneficial effects that: (1) the guide vanes can be quickly installed; (2) the gear ring can be detached independently for maintenance, and each gear can be detached independently for maintenance, so that the guide vane can be conveniently installed, maintained and replaced; (3) the limiting structure is quickly locked and unlocked, and the expansion of all limiting shaft levers can be realized through one inflator pump, so that all guide vanes are convenient to mount, dismount, replace and maintain; (4) the limiting shaft lever can be kept in an extending state, and even if slight air leakage occurs in the inflator pump and the accommodating hole, the limiting shaft lever cannot retract, so that the connection reliability of the guide vane is ensured; (5) the inflation and air suction states of the inflator pump are linked with the locking relation of the outer retainer ring, and the limit structure of the guide vane cannot be loosened as long as the gear ring is not detached, so that the stability of installation of the guide vane in the running state is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of the present invention.

In the figure: the device comprises an outer shell 1, a containing hole 1.1, a connecting hole 1.2, a guide vane 2, a connecting shaft 2.1, a blade 2.2, a gear 3, a gear ring 4, an outer retainer ring 5, a limiting structure 7, a limiting retainer ring 7.1, a limiting shaft lever 7.2, a guide inclined plane 7.2.1, an inflator 7.3, an annular inflator 7.3.1, an annular piston 7.3.2, a first spring 7.4, a second spring 7.5, a second bearing 8 and a first bearing 9.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in fig. 1 and 2, a guide vane adjuster structure capable of being installed quickly in place comprises an outer shell 1, a plurality of guide vanes 2, a plurality of gears 3, a gear ring 4, an outer retainer ring 5, a driving mechanism and an outer retainer ring 5 for limiting the gear ring 4 to move along the axis direction of the outer shell 1, wherein the plurality of guide vanes 2 are circumferentially arranged along the axis of the outer shell 1, each guide vane 2 comprises a connecting shaft 2.1 and a blade 2.2, each blade 2.2 is arranged in the outer shell 1, the connecting shaft 2.1 penetrates through a connecting hole 1.2 in the side wall of the outer shell 1 and extends out of the outer shell 1, the connecting shaft 2.1 is rotatably connected with the outer shell 1, a limiting structure 7 for limiting the connecting shaft 2.1 to move along the axis direction of the connecting shaft 2.1 is arranged on the outer shell 1, the gears 3 are in one-to-one correspondence with the guide vanes 2, and the gears 3 are fixed on the corresponding connecting shafts 2.1; the gear ring 4 is sleeved on the outer side of the outer shell 1 and is rotationally connected with the outer shell 1, the outer retainer ring 5 is arranged on the outer side of the outer shell 1 and is connected with the outer shell 1 through bolts, one end of the outer retainer ring 5 is in contact with the end face of the gear ring 4, the gear 3 is meshed with the outer retainer ring 5, and the output shaft of the driving mechanism is connected with the connecting shaft 2.1 of one guide vane 2. The inner side of the gear ring 4 is provided with a first bearing 9, the outer ring of the first bearing 9 is fixed with the gear ring 4, one end of an outer retainer ring 5 is pressed against the end face of the inner ring of the first bearing 9, and the outer retainer ring 5 limits the position of the gear ring 4 by limiting the position of the first bearing 9.

As shown in fig. 2, the limiting structure 7 is arranged between the gear 3 and the blade 2.2, the limiting structure 7 comprises a plurality of limiting check rings 7.1 and a plurality of limiting shaft rods 7.2, the plurality of limiting check rings 7.1 are in one-to-one correspondence with the guide vanes 2, the limiting check rings 7.1 are sleeved on the corresponding connecting shafts 2.1, the limiting check rings 7.1 are fixed on the outer side wall of the outer shell 1 through bolts, and the limiting check rings 7.1 are arranged between the gear 3 and the blade 2.2. Be equipped with a plurality of accommodation hole 1.1 on the terminal surface of shell body 1, spacing axostylus axostyle 7.2 sets up in the accommodation hole 1.1 that corresponds, spacing axostylus axostyle 7.2 and accommodation hole 1.1 sliding connection, spacing axostylus axostyle 7.2's one end stretches out accommodation hole 1.1 and goes deep into in connecting hole 1.2, and connecting hole 1.2 is close to the one end of connecting axle 2.1 and is equipped with the spacing ring, and spacing epaxial is equipped with the stair structure, can restrict spacing axostylus axostyle 7.2 and stretch out completely through stair structure and spacing ring, spacing axostylus axostyle 7.2 is equipped with direction inclined plane 7.2.1 towards one side of shell body 1 axis, is equipped with in the accommodation hole 1.1 and is used for making spacing axostylus axostyle 7.2 keep the first spring 7.5 of stretching out the state. Two sides of the connecting shaft 2.1 are respectively provided with a limiting shaft lever 7.2. The connecting shaft 2.1 is provided with a second bearing 8, the connecting shaft 2.1 is rotatably connected with the outer shell 1 through the second bearing 8, the inner ring of the second bearing 8 is fixed with the connecting shaft 2.1 through a shaft shoulder and a clamp spring structure, and the limiting shaft lever 7.2 and the limiting retainer ring 7.1 are respectively contacted with the outer ring side wall of the corresponding second bearing 8. The limiting shaft rod 7.2 and the limiting retainer ring 7.1 limit the axial position of the connecting shaft 2.1 by limiting the position of the second bearing 8.

In the above technical solution, the blades 2.2 of the guide vane 2 are of a fan-shaped structure. The driving mechanism is a driving motor, the gear 3 and the connecting shaft 2.1 which are connected with the driving mechanism are driven to rotate through the driving mechanism, the gear 3 rotates to drive the gear ring 4 to rotate, the gear ring 4 rotates to drive all the gears 3 to rotate together, all the guide vanes 2 are driven to rotate, the angles of the blades 2.2 are changed when the guide vanes 2 rotate, the size of an air inlet is adjusted, and the air inlet amount is adjusted. When the guide vane 2 is installed, the guide vane 2 extends into the outer shell 1, the connecting shaft 2.1 penetrates through the connecting hole 1.2 of the outer shell 1, when the connecting shaft 2.1 is installed in place, the limiting structure 7 limits the connecting shaft 2.1 to move along the axis direction of the connecting shaft 2.1, then the gear ring 4 and the gear 3 are installed, the gear ring 4 is connected with the outer shell 1 in a rotating mode, the gear 3 is meshed with the gear ring 4, the output shaft of the driving mechanism is connected with the connecting shaft 2.1 of one of the guide vanes 2, and installation is completed. Limiting structure 7 can move the axis direction of stator 2 along connecting axle 2.1 and carry on spacingly, guarantees that stator 2 can only rotate when normal operating, and stator 2's axial position can not squint. When the guide vane 2 needs to be installed, only the connecting shaft 2.1 needs to penetrate through the connecting hole 1.2 in the outer shell 1, the guide inclined plane 7.2.1 enables the limiting shaft lever 7.2 to retract inwards, and when the connecting shaft 2.1 is installed in place, the limiting shaft lever 7.2 automatically pops out to limit the connecting shaft 2.1. The above structure realizes quick installation of the guide vane 2.

Example 2:

as shown in fig. 2, based on embodiment 1, the limiting structure 7 further includes an inflator 7.3, an outer side wall of the limiting shaft 7.2 is connected with an inner side wall of the receiving hole 1.1 in a sealing manner, one end of the receiving hole 1.1, which is far away from the connecting shaft 2.1, is sealed, and all the receiving holes 1.1 are communicated with the same inflator 7.3. The end of the receiving bore 1.1 remote from the connecting shaft 2.1 is sealed by a sealing plug.

Among the above-mentioned technical scheme, inflator pump 7.3 and all accommodation holes 1.1 intercommunication, the structure can realize 7 quick locking of limit structure and unblocks, and can realize the flexible of all spacing axostylus axostyles 7.2 through an inflator pump 7.3, conveniently installs, dismantles, changes and maintains all stator 2. When the inflator 7.3 inflates the accommodating hole 1.1, the limiting shaft rod 7.2 extends out, and when the inflator 7.3 inhales air to the accommodating hole 1.1, the limiting shaft rod 7.2 retracts. The first spring 7.5 can keep the limiting shaft rod 7.2 in an extending state, even if the inflator 7.3 and the accommodating hole 1.1 slightly leak air, the limiting shaft rod 7.2 cannot retract, double insurance is formed between the limiting shaft rod and the inflator 7.3, and the reliability of connection of the guide vane 2 is guaranteed. The inflation and air suction states of the inflator 7.3 are linked with the locking relation of the outer retainer ring 5, and as long as the gear ring 4 is not disassembled, the limiting structure 7 of the guide vane 2 cannot be loosened, so that the installation stability of the guide vane 2 in the running state is ensured. And the gear ring 4 is not disassembled, the transmission relation among the gears 3 always exists, and accidents easily occur in the disassembling process. When the gear 3 and the guide vane 2 are dismantled, the gear 3 and the guide vane 2 are independent from each other in transmission relation, and accidents are avoided.

Example 3:

as shown in fig. 2, on the basis of embodiment 2, the inflator 7.3 includes an annular cylinder 7.3.1 and an annular piston 7.3.2, the annular piston 7.3.2 is slidably connected with the annular cylinder 7.3.1, the annular cylinder 7.3.1 and the annular piston 7.3.2 are sleeved outside the outer housing 1, and the outer retainer 5 compresses the annular piston 7.3.2. A second spring 7.4 is arranged in the annular air cylinder 7.3.1, two ends of the second spring 7.4 are respectively connected with the annular piston 7.3.2 and the annular air cylinder 7.3.1, and the rigidity coefficient of the second spring 7.4 is larger than that of the first spring 7.5. The inflation and air suction states of the inflator 7.3 are linked with the locking relation of the outer retainer ring 5, and as long as the gear ring 4 is not disassembled, the limiting structure 7 of the guide vane 2 cannot be loosened, so that the installation stability of the guide vane 2 in the running state is ensured. And the gear ring 4 is not disassembled, the transmission relation among the gears 3 always exists, and accidents easily occur in the disassembling process. When the gear 3 and the guide vane 2 are dismantled, the gear 3 and the guide vane 2 are independent from each other in transmission relation, and accidents are avoided.

The invention has the beneficial effects that: (1) the guide vane 2 can be quickly installed; (2) the gear ring 4 can be detached independently for maintenance, and each gear 3 can be detached independently for maintenance, so that the guide vane 2 can be conveniently installed, maintained and replaced; (3) the limiting structure 7 is quickly locked and unlocked, and the expansion of all limiting shaft rods 7.2 can be realized through one inflator pump 7.3, so that all guide vanes 2 are convenient to mount, dismount, replace and maintain; (4) the limiting shaft lever 7.2 can be kept in an extending state, even if slight air leakage occurs in the inflator pump 7.3 and the accommodating hole 1.1, the limiting shaft lever 7.2 cannot retract, and the connection reliability of the guide vane 2 is ensured; (5) the inflation and air suction states of the inflator 7.3 are linked with the locking relation of the outer retainer ring 5, and as long as the gear ring 4 is not disassembled, the limiting structure 7 of the guide vane 2 cannot be loosened, so that the installation stability of the guide vane 2 in the running state is ensured.