Anti-reverse rotation fixing apparatus for fan main shaft

Abstract

An anti-reverse rotation fixing apparatus for a fan main shaft, comprising a first position adjustment mechanism (110), two height adjustment mechanisms (120), and two flexible clamping mechanisms (130). Two moving bases (111) of the first position adjustment mechanism (110) can move towards one another or move away from one another; the two height adjustment mechanisms (120) are mounted on the moving bases (111) in one-to-one correspondence with the two moving bases (111) and can move along with the corresponding moving bases (111); the two flexible clamping mechanisms (130) are mounted on the top surfaces of the height adjustment mechanisms (120) in one-to-one correspondence with the two height adjustment mechanisms (120), and the height in the vertical direction of the flexible clamping mechanisms (130) is adjusted by the corresponding height adjustment mechanisms (120). As the height adjustment mechanisms (120) and the flexible clamping mechanisms (130) move along with the moving bases (111), adjacent sides of the two flexible clamping mechanisms (130) can abut against the outer walls of two opposing sides of the fan main shaft (200) so as to clamp and fix the fan main shaft (200), thereby preventing the fan main shaft (200) from rotating and greatly reducing the motion resistance risk coefficient, improving the motion resistance effect, and reducing the possibility of damage to the fan main shaft (200) during the motion resistance process.

Description

Fan main shaft anti-reverse fixing device Technical Field

[0001] The present invention relates to the technical field of fan maintenance auxiliary equipment, and in particular to a fan main shaft anti-reversal fixing device. Background Art

[0002] In thermal power plants, large boiler fans are typically arranged in pairs. The outlet sections of the two fans are interconnected. To inspect and repair either fan, it is necessary to shut down that fan and close the connecting door at its outlet section. However, due to sealing issues with the connecting door and the fan's own outlet baffle, the two fans cannot be completely isolated from each other. This can cause the main shaft of the fan being inspected to rotate backward, hindering maintenance.

[0003] At present, in order to prevent the fan from reversing, the following two methods are mainly used:

[0004] The first method is to manually lift the sleepers so that they abut against the side walls of the fan main shaft, and use the friction between the sleepers and the side walls of the fan main shaft to prevent the fan main shaft from reversing.

[0005] The second method is to use fasteners such as bolts or screws to apply clamping force to the fan main shaft to prevent the fan main shaft from rotating backward.

[0006] However, when the above two methods are used to prevent the fan main shaft from reversing, the risk factor is high and the blocking effect is poor. Summary of the Invention

[0007] In order to solve the problem that the conventional blocking method is used to prevent the fan main shaft from reversing, the risk factor is high and the blocking effect is poor, the present invention provides a fan main shaft anti-reversal fixing device.

[0008] To achieve the purpose of the present invention, a fan main shaft anti-reversal fixing device is provided, comprising:

[0009] The first position adjustment mechanism includes:

[0010] There are two movable seats, which can move toward each other or move away from each other;

[0011] There are two height adjustment mechanisms, which are installed on the moving bases in a one-to-one correspondence with the two moving bases and can move with the corresponding moving bases;

[0012] There are two flexible clamping mechanisms, which are installed on the top surface of the height adjustment mechanism in a one-to-one correspondence with the two height adjustment mechanisms. The height of the flexible clamping mechanism in the vertical direction is adjusted by the corresponding height adjustment mechanism; the adjacent sides of the two flexible clamping mechanisms can respectively abut against the outer walls on the opposite sides of the fan main shaft.

[0013] In some specific embodiments, each flexible clamping mechanism includes:

[0014] The clamping seat has a plurality of blind holes on one side; the plurality of blind holes are evenly distributed along the vertical direction;

[0015] A plurality of clamping rods are inserted into the blind holes in a one-to-one correspondence with the blind holes;

[0016] There are multiple buffer springs, which are arranged in the blind holes in a one-to-one correspondence with the multiple blind holes. One end of the buffer spring is fixedly connected to the bottom surface of the blind hole, and the other end is fixedly connected to one end of the clamping rod located in the blind hole.

[0017] In some specific embodiments, the clamping rod is made of copper.

[0018] In some specific embodiments, one end of each clamping rod located outside the blind hole is fixed with or covered with a buffer pad.

[0019] In some specific embodiments, it also includes:

[0020] There are two locking mechanisms, which are installed on the flexible clamping mechanisms in a one-to-one correspondence with the two flexible clamping mechanisms, and can limit the movement of each clamping rod of the corresponding flexible clamping mechanism.

[0021] In some specific embodiments, a plurality of clearance holes are provided on the adjacent side of the clamping seat provided with the blind hole; the plurality of clearance holes are evenly distributed along the vertical direction; and each clearance hole is connected to a blind hole;

[0022] Each locking mechanism includes:

[0023] An electric push rod is fixed to the top surface of the clamping seat;

[0024] A first transmission rod, the axis of which is vertically arranged, and the top end of which is fixedly connected to the output shaft of the electric push rod;

[0025] There are multiple brake rods, which correspond to the multiple clearance holes one by one; the axes of the multiple brake rods are all horizontally arranged and evenly fixed on the first transmission rod along the vertical direction; each brake rod can be inserted into a clearance hole to limit the movement of the clamping rod in the corresponding blind hole.

[0026] In some specific embodiments, it also includes:

[0027] There are two second position adjustment mechanisms, which are installed on the height adjustment mechanism in a one-to-one correspondence with the two height adjustment mechanisms; the height of the second position adjustment mechanism in the vertical direction is adjusted by the corresponding height adjustment mechanism; each second position adjustment mechanism is installed with a flexible clamping mechanism; the two second position adjustment mechanisms can drive the two flexible clamping mechanisms to move toward or away from each other.

[0028] In some specific embodiments, each second position adjustment mechanism includes:

[0029] A first support base, the bottom end of which is fixedly connected to the top end of the height adjustment mechanism;

[0030] A first driving motor is fixed to a side surface of the first supporting base;

[0031] There are four lifters, each fixed at the four corners of a side surface of the first support base;

[0032] A right-angle steering gear is fixed to a side surface of the first support base, the input shaft of which is fixedly connected to the output shaft of the first drive motor, and the output shaft is fixedly connected to the input shaft of the lifter via a second transmission rod;

[0033] There are four first screw rods, all with their axes arranged horizontally; one end of each first screw rod is fixedly connected to the worm gear shaft of a lifter, and the other end is sleeved with a lifting nut;

[0034] The second support seat is provided with a mounting hole adapted to the lifting nut; the hole wall of the mounting hole is fixedly connected to the outer wall of the lifting nut.

[0035] In some embodiments, each height adjustment mechanism is a motorized lift.

[0036] In some specific embodiments, it also includes:

[0037] Base with a slide groove on the top;

[0038] The bottom end of each movable seat is provided with a slider adapted to the slide groove;

[0039] The first position adjustment mechanism also includes:

[0040] There are two second drive motors, which are respectively arranged on the mutually opposing sides of the two movable seats, and the output shafts are arranged facing each other;

[0041] The third supporting seat is provided between the two movable seats;

[0042] There are two second screw rods, one end of which is fixedly connected to the output shafts of the two second drive motors, and the other end is rotatably connected to the top of the third support seat; each second screw rod is slidably connected to a movable seat through a nut.

[0043] Beneficial effects of the present invention: The fan main shaft anti-reversal fixing device of the present invention is provided with a first position adjustment mechanism, and the two movable seats of the first position adjustment mechanism can move toward or away from each other. Two height adjustment mechanisms are installed on the movable seats in a one-to-one correspondence with the two movable seats and can move with the corresponding movable seats. Two flexible clamping mechanisms are installed on the top surface of the height adjustment mechanism in a one-to-one correspondence with the two height adjustment mechanisms, and the height of the flexible clamping mechanism in the vertical direction is adjusted by the corresponding height adjustment mechanism. During the movement of the height adjustment mechanism and the flexible clamping mechanism with the movable seat, the adjacent sides of the two flexible clamping mechanisms can respectively abut against the outer walls on the opposite sides of the fan main shaft to clamp and fix the fan main shaft, thereby preventing the fan main shaft from rotating. Compared with the form of using sleepers to block the movement, the two flexible clamping mechanisms respectively clamp the fan main shaft on the opposite sides of the fan main shaft, and the phenomenon of sleeper breakage will no longer occur, which greatly reduces the risk factor. The resistance force applied to the fan main shaft is also relatively uniform, which will not cause the axial deviation of the fan main shaft, thereby avoiding damage to the bearings during the blocking process. Moreover, the resistance effect is greatly improved. Compared with the form of resistance using fasteners such as bolts or screws, the two height adjustment mechanisms can respectively adjust the height of the two flexible clamping mechanisms in the vertical direction, so that the two flexible clamping mechanisms can cooperate to clamp and fix the fan main shafts of different heights, making the fan main shaft anti-reversal fixing device applicable to various models of fans, thereby improving its versatility. The two flexible clamping mechanisms respectively clamp the fan main shaft on opposite sides of the fan main shaft, and the resistance force applied to the fan main shaft is also relatively uniform. The applied resistance force has a certain degree of flexibility, which greatly reduces the possibility of damage to the fan main shaft and bearings, and improves the resistance effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] FIG1 is a schematic structural diagram of some specific embodiments of a fan main shaft anti-reversal fixing device according to the present invention;

[0045] FIG2 is a schematic diagram of the combined structure of some specific embodiments of the flexible clamping mechanism and the locking mechanism in the anti-reversal fixing device for the fan main shaft shown in FIG1 ;

[0046] Figure 3 is a right side view of Figure 2;

[0047] FIG4 is a schematic structural diagram of some specific embodiments of the flexible clamping mechanism in the anti-reversal fixing device for the fan main shaft shown in FIG1 ;

[0048] FIG5 is a cross-sectional view of FIG4 along the vertical direction;

[0049] FIG6 is a schematic structural diagram of some specific embodiments of the second position adjustment mechanism in the anti-reversal fixing device for the fan main shaft shown in FIG1 .

[0050] In the accompanying drawings, 110, the first position adjustment mechanism; 111, the movable seat; 1111, the slider; 112, the second drive motor; 113, the third support seat; 114, the second screw rod; 120, the height adjustment mechanism; 130, the flexible clamping mechanism; 131, the clamping seat; 1311, the blind hole; 1312, the clearance hole; 132, the clamping rod; 133, the buffer spring; 140, the locking mechanism; 141, the electric push rod; 142, the first transmission rod; 143, the brake rod; 150, the second position adjustment mechanism; 151, the first support seat; 152, the first drive motor; 153, the lifter; 154, the right-angle steering gear; 155, the second transmission rod; 156, the first screw rod; 157, the second support seat; 160, the base; 161, the slide; 200, the fan main shaft. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0053] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “top”, “bottom”, “inside”, “outside”, “axis”, and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0055] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," "fixed," "joined," and "hinge" should be understood in a broad sense. For example, these terms may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0056] As mentioned in the background, two methods are currently used to prevent fans from reversing: The first involves manually lifting sleepers so that they contact the sidewalls of the fan shaft, leveraging friction between them to prevent the fan shaft from reversing. The second method involves using fasteners such as bolts or screws to apply a clamping force to the fan shaft to prevent it from reversing. However, these two methods are both highly risky and ineffective.

[0057] It should be noted that for the first braking method, when using sleepers to prevent the fan shaft from reversing, the fan main shaft generates a tangential force on the sleepers, and this tangential force is large, which can easily cause the sleepers to break, and may cause harm to the operator. At the same time, the sleepers contact a certain point or a local area on the side wall of the fan main shaft, and the pressure generated on the fan main shaft is a single-direction radial force, which causes the axial direction of the fan main shaft to deviate, and thus causes irreparable damage to the bearings connected to the fan main shaft. Moreover, the braking effect is average. For the second braking method, since the vertical heights of the main shafts of different models of fans are different, this braking method cannot be applied to multiple models of fans. In addition, it is impossible to apply uniform braking force to the fan main shaft, which may cause a certain degree of damage to the fan main shaft and bearings, and the braking effect is also relatively average.

[0058] In order to improve the above problems, with reference to Figures 1, 2, 3, 4, 5 and 6, a fan main shaft anti-reversal fixing device is provided, comprising a first position adjustment mechanism 110, two height adjustment mechanisms 120 and two flexible clamping mechanisms 130. The first position adjustment mechanism 110 comprises two movable seats 111. The two movable seats 111 can move toward each other or move back to back. The two height adjustment mechanisms 120 are installed on the movable seats 111 in a one-to-one correspondence with the two movable seats 111, and can move with the corresponding movable seats 111. The two flexible clamping mechanisms 130 are installed on the top surface of the height adjustment mechanism 120 in a one-to-one correspondence with the two height adjustment mechanisms 120, and the height of the flexible clamping mechanism 130 in the vertical direction is adjusted by the corresponding height adjustment mechanism 120. When the height adjustment mechanism 120 and the flexible clamping mechanism 130 move with the movable seat 111, the adjacent sides of the two flexible clamping mechanisms 130 can respectively abut against the outer walls on the opposite sides of the fan main shaft 200 to clamp and fix the fan main shaft 200, thereby preventing the fan main shaft 200 from rotating.

[0059] Compared to using sleeper resistance, two flexible clamping mechanisms 130 hold the fan main shaft 200 on opposite sides, eliminating the risk of sleeper breakage and significantly reducing the risk factor. The resistance force applied to the fan main shaft 200 is also relatively uniform, preventing axial deviation of the fan main shaft 200 and avoiding damage to the bearings during the resistance process. Furthermore, the resistance effect is significantly improved.

[0060] Compared to methods that utilize fasteners such as bolts or screws to prevent rotation, the two height adjustment mechanisms 120 can independently adjust the vertical heights of the two flexible clamping mechanisms 130, enabling the two flexible clamping mechanisms 130 to collaboratively clamp and secure the fan main shaft 200 at different heights. This makes the fan main shaft anti-reversal fixture applicable to a variety of fan models, improving its versatility. The two flexible clamping mechanisms 130 clamp the fan main shaft 200 on opposite sides of the fan main shaft 200, applying relatively uniform and flexible resistance to the fan main shaft 200. This significantly reduces the possibility of damage to the fan main shaft 200 and bearings, and improves the resistance effect.

[0061] Specifically, in the exemplary embodiment, referring to Figure 5, each flexible clamping mechanism 130 includes a clamping seat 131, a clamping rod 132 and a buffer spring 133. A plurality of blind holes 1311 are provided on one side of the clamping seat 131. The plurality of blind holes 1311 are evenly distributed along the vertical direction. The clamping rods 132 are multiple and are inserted into the blind holes 1311 in a one-to-one correspondence with the plurality of blind holes 1311. There are multiple buffer springs 133, which are arranged in the blind holes 1311 in a one-to-one correspondence with the plurality of blind holes 1311, one end of which is fixedly connected to the bottom surface of the blind hole 1311, and the other end is fixedly connected to one end of the clamping rod 132 located in the blind hole 1311. It should be noted that the blind holes 1311 on the clamping seats 131 of the two flexible clamping mechanisms 130 are arranged opposite to each other. In the process of the two flexible clamping mechanisms 130 approaching the outer wall of the fan main shaft 200, each buffer spring 133 is squeezed to different degrees, and the length of each clamping rod 132 extending out of the blind hole 1311 is adaptively adjusted according to the curvature of the side wall and the diameter of the fan main shaft 200. The flexible abutment method reduces the possibility of damage to the fan main shaft 200 and the bearing. A main shaft receiving groove adapted to the fan main shaft 200 is formed at the common end of the multiple clamping rods 132 of each clamping mechanism, which ensures the uniformity of the applied resistance force, so that the axial direction of the fan main shaft 200 will not deviate from the predetermined direction, greatly reducing the damage to the fan main shaft 200 during the resistance process. At the same time, a better resistance effect is guaranteed. Moreover, the two flexible clamping mechanisms 130 are suitable for clamping and fixing fan main shafts 200 of different diameters, and have good versatility.

[0062] Preferably, the clamping rod 132 is made of copper. Compared with the fan main shaft 200 made of steel or iron, the material of the clamping rod 132 is softer, ensuring that the fan main shaft 200 will not be damaged during the clamping process.

[0063] Preferably, a buffer pad is fixed to or covered with a buffer pad at one end of each clamping rod 132 outside the blind hole 1311. This further ensures that the fan main shaft 200 will not be damaged during the clamping process. The buffer pad is made of rubber, plastic, silicone, etc.

[0064] Specifically, in the exemplary embodiment, the fan main shaft anti-reversal fixture further includes two locking mechanisms 140, which are mounted on the flexible clamping mechanisms 130 in a one-to-one correspondence with the two flexible clamping mechanisms 130. When the common end of the multiple clamping rods 132 of each clamping mechanism forms a main shaft receiving groove compatible with the fan main shaft 200, the corresponding locking mechanism 140 can restrict the movement of each clamping rod 132 of the flexible clamping mechanism 130. This further improves the braking effect. As shown in Figures 2, 3, 4, and 5, a plurality of clearance holes 1312 are provided on the side adjacent to the blind hole 1311 of the clamping seat 131. The plurality of clearance holes 1312 are evenly distributed along the vertical direction. Each clearance hole 1312 is connected to a blind hole 1311. Each locking mechanism 140 includes an electric push rod 141, a first transmission rod 142, and a plurality of brake rods 143. The electric push rod 141 is fixed to the top surface of the clamping seat 131. The axis of the first transmission rod 142 is set vertically, and the top end is fixedly connected to the output shaft of the electric push rod 141. Multiple brake rods 143 correspond to multiple clearance holes 1312 one by one. The axes of the multiple brake rods 143 are all set horizontally and are evenly fixed on the first transmission rod 142 along the vertical direction. Each brake rod 143 can be inserted into a clearance hole 1312 to limit the movement of the clamping rod 132 in the corresponding blind hole 1311. The electric push rod 141 can drive the first transmission rod 142 away from or close to the clearance hole 1312, thereby driving each brake rod 143 to insert into or disengage from the corresponding clearance hole 1312. When each brake rod 143 is inserted into the corresponding clearance hole 1312 and abuts against the side wall of the clamping rod 132 in the corresponding blind hole 1311 , it can restrict the clamping rod 132 in the corresponding blind hole 1311 from continuing to move.

[0065] Specifically, in the exemplary embodiment, the fan main shaft anti-reversal fixing device also includes two second position adjustment mechanisms 150. The two second position adjustment mechanisms 150 are mounted on the height adjustment mechanisms 120 in a one-to-one correspondence with the two height adjustment mechanisms 120. Each second position adjustment mechanism 150 is mounted on a flexible clamping mechanism 130. The corresponding height adjustment mechanism 120 adjusts the vertical height of the second position adjustment mechanism 150 and the flexible clamping mechanism 130. The two second position adjustment mechanisms 150 can drive the two flexible clamping mechanisms 130 to move toward or away from each other. As shown in Figures 1 and 6, each second position adjustment mechanism 150 includes a first support base 151, a first drive motor 152, four lifters 153, three right-angle deflectors 154, six second transmission rods 155, four first screw rods 156, four lifting nuts, and a second support base 157. The bottom end of the first support base 151 is fixedly connected to the top end of the height adjustment mechanism 120. The first drive motor 152 is fixed to a side surface of the first support base 151. The four lifters 153 are fixed to the four corners of a side surface of the first support base 151. The three right-angle diverters 154 are respectively a first right-angle diverter 154, a second right-angle diverter 154, and a third right-angle diverter 154. The first right-angle diverter 154 is fixed to the middle of a side surface of the first support base 151, and its input shaft is fixedly connected to the output shaft of the first drive motor 152. The second right-angle diverter 154 is located between two of the lifters 153, and its input shaft is connected to one of the output shafts of the first right-angle diverter 154 via a second transmission rod 155. The two output shafts are respectively connected to the input shafts of two of the lifters 153 via a second transmission rod 155. The third right-angle diverter 154 is located between the other two lifters 153, and its input shaft is connected to the other output shaft of the first right-angle diverter 154 via a second transmission rod 155. The two output shafts are respectively connected to the input shafts of the other two lifters 153 via a second transmission rod 155. The axes of the four first screw rods 156 are all arranged horizontally. One end of each first screw rod 156 is fixedly connected to the worm gear shaft of a lifter 153, and the other end is sleeved with a lifting nut. Four mounting holes compatible with the lifting nuts are provided on the second support seat 157. The hole wall of each mounting hole is fixedly connected to the outer wall of a lifting nut. The first drive motor 152 of each second position adjustment mechanism 150 can drive the second support seat 157 close to the first support seat 151 or away from the first support seat 151, thereby causing the two flexible clamping mechanisms 130 to move toward or away from each other, thereby adjusting the clamping force and ensuring the braking effect.

[0066] The working process and principle of the fan main shaft anti-reverse fixing device are as follows:

[0067] First, the two movable seats 111 move toward each other so that the two flexible clamping mechanisms 130 move to the bottom of the opposite sides of the fan main shaft 200. Next, the two height adjustment mechanisms 120 adjust the heights of the two flexible clamping mechanisms 130 in the vertical direction so that the heights of the two flexible clamping mechanisms 130 match the heights of the fan main shaft 200. Then, the two movable seats 111 continue to move toward each other so that the two flexible clamping mechanisms 130 respectively hold the opposite sides of the fan main shaft 200, or the second support seats 157 of the two second position adjustment mechanisms 150 move toward each other so that the two flexible clamping mechanisms 130 respectively hold the opposite sides of the fan main shaft 200. It should be pointed out that the flexible clamping mechanism 130 can be directly installed on the top of the height adjustment mechanism 120, replacing the form in which the flexible clamping mechanism 130 is installed on the top of the height adjustment mechanism 120 through the second position adjustment mechanism 150.

[0068] Each height adjustment mechanism 120 is an electric lift, comprising a fourth support seat, four support beams, a fifth support seat and an electric push rod 141. The fourth support seat is fixed to the top surface of the movable seat 111. Two of the support beams are arranged crosswise, with their middle parts rotatably connected to each other, their top ends rotatably connected to the fifth support seat, and their bottom ends rotatably connected to the fourth support seat. The other two support beams are also arranged crosswise, with their middle parts rotatably connected to each other, their top ends rotatably connected to the fifth support seat, and their bottom ends rotatably connected to the fourth support seat. The axis of the electric push rod 141 is arranged tilted, with its bottom end hinged to the fourth support seat, and its output shaft hinged to the upper part of one of the support beams.

[0069] Specifically, in the exemplary embodiment, the fan main shaft anti-reversal fixing device also includes a base 160, and a slide groove 161 is provided on the top of the base 160. The bottom end of each movable seat 111 is provided with a slider 1111 adapted to the slide groove 161. The slider 1111 can slide along the slide groove 161. The first position adjustment mechanism 110 also includes two second drive motors 112, two reduction gears, a third support seat 113 and two second screw rods 114. The two second drive motors 112 are respectively arranged on the mutually opposing sides of the two movable seats 111, and the output shafts are arranged facing each other and are respectively mounted on the top of the base 160 through the mounting seat. The third support seat 113 is arranged between the two movable seats 111, and the bottom end is fixedly connected to the top of the base 160. One end of the two second screw rods 114 is fixedly connected to the output shafts of the two second drive motors 112 through the reduction gear, and the other end is rotatably connected to the top of the third support seat 113 through a bearing. Each second screw rod 114 is slidably connected to a movable base 111 via a screw nut. The two second driving motors 112 respectively drive the corresponding second screw rod 114 to rotate through a reduction gearbox, thereby driving the two movable bases 111 to move toward or away from each other.

[0070] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "example," "specific example," "a specific embodiment," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0071] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solution and the concept of the invention, which should be covered by the scope of protection of the present invention.

Claims

1. A fan main shaft anti-reversal fixing device, characterized in that: include: The first position adjustment mechanism comprises: There are two movable seats, which can move toward each other or move away from each other; There are two height adjustment mechanisms, which are installed on the moving seats in a one-to-one correspondence with the two moving seats and can move with the corresponding moving seats; There are two flexible clamping mechanisms, which are installed on the top surface of the height adjustment mechanism in a one-to-one correspondence with the two height adjustment mechanisms, and the height of the flexible clamping mechanism in the vertical direction is adjusted by the corresponding height adjustment mechanism; the adjacent sides of the two flexible clamping mechanisms can respectively abut against the outer walls on the opposite sides of the fan main shaft.

2. The fan main shaft anti-reversal fixing device according to claim 1 is characterized in that: Each of the flexible clamping mechanisms comprises: The clamping seat has a plurality of blind holes on one side; the plurality of blind holes are evenly distributed along the vertical direction; A plurality of clamping rods are inserted into the blind holes corresponding to the plurality of blind holes one by one; There are multiple buffer springs, which are arranged in the blind holes in a one-to-one correspondence with the multiple blind holes, one end of which is fixedly connected to the bottom surface of the blind hole, and the other end of which is fixedly connected to one end of the clamping rod located in the blind hole.

3. The fan main shaft anti-reversal fixing device according to claim 2, characterized in that: The material of the clamping rod is copper.

4. The fan main shaft anti-reversal fixing device according to claim 2, characterized in that: One end of each clamping rod located outside the blind hole is fixed with or covered with a buffer pad.

5. The fan main shaft anti-reversal fixing device according to claim 2, characterized in that: Also includes: There are two locking mechanisms, which are installed on the flexible clamping mechanisms in a one-to-one correspondence with the two flexible clamping mechanisms, and can limit the movement of each clamping rod of the corresponding flexible clamping mechanism.

6. The fan main shaft anti-reversal fixing device according to claim 5, characterized in that: A plurality of clearance holes are arranged on the adjacent side of the clamping seat on which the blind hole is arranged; the plurality of clearance holes are evenly distributed along the vertical direction; each of the clearance holes is connected to one of the blind holes; Each of the locking mechanisms comprises: An electric push rod, fixed to the top surface of the clamping seat; A first transmission rod, the axis of which is vertically arranged, and the top end of which is fixedly connected to the output shaft of the electric push rod; There are multiple brake rods, which correspond one by one to the multiple clearance holes; the axes of the multiple brake rods are horizontally arranged and evenly fixed on the first transmission rod along the vertical direction; each brake rod can be inserted into one of the clearance holes to limit the movement of the clamping rod in the corresponding blind hole.

7. The fan main shaft anti-reversal fixing device according to any one of claims 1 to 6, characterized in that: Also includes: There are two second position adjustment mechanisms, which are installed on the height adjustment mechanisms in a one-to-one correspondence with the two height adjustment mechanisms; the height of the second position adjustment mechanisms in the vertical direction is adjusted by the corresponding height adjustment mechanisms; each of the second position adjustment mechanisms is installed with a flexible clamping mechanism; the two second position adjustment mechanisms can drive the two flexible clamping mechanisms to move toward or away from each other.

8. The fan main shaft anti-reversal fixing device according to claim 7, characterized in that: Each of the second position adjustment mechanisms comprises: A first support base, the bottom end of which is fixedly connected to the top end of the height adjustment mechanism; A first driving motor is fixed to a side surface of the first supporting base; There are four lifters, which are respectively fixed at four corners of a side surface of the first supporting base; A right-angle steering gear is fixed to a side surface of the first support seat, the input shaft of which is fixedly connected to the output shaft of the first drive motor, and the output shaft is fixedly connected to the input shaft of the lifter through a second transmission rod; There are four first screw rods, and the axes are all arranged horizontally; one end of each of the first screw rods is fixedly connected to a worm gear shaft of the lifter, and the other end is sleeved with a lifting nut; A second support seat is provided with a mounting hole matched with the lifting nut; a hole wall of the mounting hole is fixedly connected to an outer wall of the lifting nut.

9. The fan main shaft anti-reversal fixing device according to any one of claims 1 to 6, characterized in that: Each of the height adjustment mechanisms is an electric lift.

10. The fan main shaft anti-reversal fixing device according to any one of claims 1 to 6, characterized in that: Also includes: Base with a slide groove on the top; The bottom end of each of the movable seats is provided with a sliding block adapted to the sliding groove; The first position adjustment mechanism also includes: There are two second driving motors, which are respectively arranged on the mutually away sides of the two moving seats, and the output shafts are arranged facing each other; A third supporting seat is provided between the two moving seats; There are two second screw rods, one end of which is fixedly connected to the output shafts of the two second drive motors respectively, and the other end is rotatably connected to the top of the third support seat respectively; each of the second screw rods is slidably connected to one of the moving seats through a nut.

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