Movable tool for preventing static blade of axial flow fan from being jammed and use method of movable tool

Abstract

The invention relates to the technical field of fan maintenance, in particular to a movable tool for preventing a stationary blade of an axial flow fan from being jammed and a using method thereof, the movable tool comprises a clamping assembly, and the clamping assembly comprises a limiting piece and an extension piece arranged below the limiting piece; wherein the limiting piece comprises a first limiting unit and a second limiting unit, the first limiting unit is parallel to the second limiting unit, and the extension piece is fixedly connected with the limiting piece. The device has the beneficial effects that the fan blade is arranged between the first limiting unit and the second limiting unit, the extension piece is rotated to adjust the fan blade to a proper angle, the maintenance process is simplified, and the non-planned downtime is shortened. Factory and facility operators are allowed to quickly solve the problem of the fan on the premise of not influencing production operation; according to the technical scheme, the static blade clamping caused by corrosion, dirt or mechanical faults is overcome, secondary damage to the static blade caused by misoperation is effectively prevented, and the problem of labor waste during operation is solved through the design of the extension piece.

Description

Technical Field

[0001] The invention relates to the technical field of fan maintenance, in particular to a movable tool for preventing stationary blades of an axial flow fan from getting stuck and a use method thereof. Background Art

[0002] After using for a period of time, the stator blades of existing axial flow fans may become stuck, which not only affects the operating efficiency of the equipment, but may also cause premature wear of the equipment and increase maintenance costs. The main problems include:

[0003] Material aging: Under high-load operation and harsh working conditions, the stationary blade materials are prone to fatigue and corrosion, the blades become more brittle, and adjustment becomes more difficult, resulting in long maintenance time, high unplanned downtime costs, and affected production efficiency.

[0004] Difficult maintenance: When the stator blades are stuck, the traditional maintenance method is to use a wrench to adjust them. The small contact area with the stator blades and the short lever arm, coupled with the friction of the jam, make it very difficult to adjust the stator blade opening. If too much force is used, it may cause cracks in the blades or even cause permanent damage to the stator blades.

[0005] Safety risk: If the stationary blades are seriously stuck and not handled in time, it may cause mechanical failure or even structural damage to the equipment, affecting the safe operation of the entire system.

[0006] Therefore, it is necessary to develop a new axial flow fan stator blade jamming movable device to solve the axial flow fan stator blade jamming problem. Summary of the invention

[0007] In view of the above existing technical problems, the present invention is proposed.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a movable tool for preventing the stator blades of an axial flow fan from getting stuck, which includes a clamping assembly, the clamping assembly includes a limit piece and an extension piece arranged below the limit piece; wherein the limit piece includes a first limit unit and a second limit unit, the first limit unit and the second limit unit are parallel, and the extension piece is fixedly connected to the limit piece.

[0009] As a preferred solution of the movable tool for preventing the stationary blades of an axial flow fan from getting stuck in the present invention, an adjusting member is provided between the first limiting unit and the second limiting unit.

[0010] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the first limiting unit includes a first limiting plate, and the second limiting unit includes a second limiting plate.

[0011] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the extension member includes an extension rod, and the extension rod is fixedly connected to the first limit plate and the second limit plate respectively.

[0012] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the adjusting member includes a first fixing unit and a second fixing unit, and the first fixing unit and the second fixing unit are used to fix the limiting member.

[0013] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the first limit plate is parallel to the second limit plate, the first limit plate and the second limit plate are similar in shape, and the area of ​​the first limit plate gradually increases toward the side close to the extension rod.

[0014] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the first limit plate and the second limit plate are mirror-imaged, and there is a parallel and overlapping portion between the first limit plate and the second limit plate.

[0015] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the first fixing unit and the second fixing unit are fixedly connected to the overlapping part between the first limiting plate and the second limiting plate.

[0016] As a preferred solution of the movable tool for preventing the stator blades of an axial flow fan from getting stuck in the present invention, the first fixing unit is fixedly connected to the side with a larger area between the first limiting plate and the second limiting plate, and the second fixing unit is fixedly connected to the side with a smaller area between the first limiting plate and the second limiting plate.

[0017] The present invention also provides a method for using a movable tool to prevent the stationary blades of an axial flow fan from getting stuck, comprising placing the fan blades between the first limiting unit and the second limiting unit, and rotating the extension piece to adjust the fan blades to a proper angle.

[0018] The beneficial effects of the movable tool for preventing the stator blades of an axial flow fan from getting stuck are as follows: by placing the fan blades between the first limit unit and the second limit unit and rotating the extension piece to adjust the fan blades to a proper angle, the maintenance process is simplified and unplanned downtime is reduced. It allows factory and facility operators to quickly solve fan problems without affecting production operations; it overcomes the stator blade jamming caused by corrosion, dirt or mechanical failure, effectively prevents secondary damage to the stator blades due to improper operation, and through the design of the extension piece, it also solves the problem of laborious operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a front view of the movable tool for preventing the stationary blades of an axial flow fan from getting stuck in the present invention.

[0021] Figure 2 It is a side view of the movable tool for preventing the stationary blades of an axial flow fan from getting stuck in the present invention.

[0022] Figure 3 A top view of a movable tool for preventing the stationary blades of an axial flow fan from getting stuck in the present invention.

[0023] Figure 4 The present invention is a cross-sectional view of a movable tool for preventing the stationary blades of an axial flow fan from getting stuck.

[0024] Figure 5 It is an enlarged view of point B in the present invention.

[0025] Figure 6 The figure is a dimension diagram of a movable tool for preventing the stationary blades of an axial flow fan from getting stuck in the present invention.

[0026] Figure 7 This is a second dimension diagram of the movable tool for preventing the stationary blades of an axial flow fan from getting stuck in the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1, reference Figure 1, which is the first embodiment of the present invention, provides a movable tool for preventing the stationary blades of an axial flow fan from getting stuck, including a clamping assembly 100, including a limiting member 100a and an extension member 103 provided below the limiting member 100a;

[0031] Preferably, the limiting member 100a includes a first limiting unit 101 and a second limiting unit 102, the first limiting unit 101 and the second limiting unit 102 are parallel, and the extension member 103 is fixedly connected to the limiting member 100a.

[0032] Furthermore, the limiting member 100a is used to limit the stator blades of the axial flow fan, that is, the stator blades of the axial flow fan are inserted between the first limiting unit 101 and the second limiting unit 102, and the stator blades can be limited by limiting between the first limiting unit 101 and the second limiting unit 102.

[0033] In summary, the extension piece 103 is fixedly arranged at one end of the first limiting unit 101 and the second limiting unit 102. By rotating the extension piece 103, the angle of the stator blades of the axial flow fan can be adjusted, so that the staff can operate at a safe distance, avoiding the safety risks that may be caused by approaching the high-temperature, high-speed rotating fan part. The length and angle design of the long handle allow the operator to apply precise force in a comfortable position, improving the efficiency and safety of adjusting the stator blades.

[0034] Example 2, reference Figure 1 to Figure 5 , which is the second embodiment of the present invention, further provides a movable tool for preventing the stator blades of an axial flow fan from getting stuck. An adjusting member 104 is provided between the first limiting unit 101 and the second limiting unit 102. The adjusting member 104 includes a first fixing unit 104a and a second fixing unit 104b, and the first fixing unit 104a and the second fixing unit 104b are used to fix and connect the limiting member 100a.

[0035] Preferably, the first fixing unit 104a is a fixing bolt, and a nut 104b matching with the first fixing unit 104a is further provided on the outer wall of the fixing bolt.

[0036] The first limiting unit 101 includes a first limiting plate 101 a , and the second limiting unit 102 includes a second limiting plate 102 a .

[0037] Preferably, the first limiting plate 101a has a first through hole 101b at its end surface; the second limiting plate 102a has a second through hole 102b at its end surface, the axes of the first through hole 101b and the second through hole 102b coincide, and the first fixing unit 104a movably cooperates with the first through hole 101b and the second through hole 102b.

[0038] Preferably, the first limiting plate 101a and the second limiting plate 102a are made of high-strength lightweight aluminum alloy to ensure the durability and portability of the tool. The fork is very light and convenient to store and transport.

[0039] Furthermore, a third through hole and a fourth through hole are further provided at one end of the first limiting plate 101a and the second limiting plate 102a away from the first through hole 101b and the second through hole 102b, and the third through hole and the fourth through hole cooperate with the second fixing unit 104b.

[0040] The extension member 103 includes an extension rod 103a, and the extension rod 103a is fixedly connected to the first limiting plate 101a and the second limiting plate 102a respectively.

[0041] Preferably, a guard handle 103b is sleeved on the outer wall of one end of the extension rod 103a away from the limiting member 100a, and a friction pattern is provided on the outer wall of the guard handle 103b to facilitate the staff to hold the tool and rotate the extension rod 103a.

[0042] Preferably, the extension rod 103a is longer so that the operator can operate safely on the operating platform or on the ground without entering the wind turbine, thereby reducing the risk of workers entering confined spaces.

[0043] Preferably, the first fixing unit 104a and the second fixing unit 104b fix two ends of the limiting member 100a respectively.

[0044] In summary, after the stationary blade enters between the first limit plate 101a and the second limit plate 102a, the first limit plate 101a and the second limit plate 102a are pressed tightly with bolts, i.e., the first fixing unit 104a and the second fixing unit 104b. The force is optimal when the stationary blade passes through the center of the fork and cannot slide freely. The extension rod 103a is rotated to adjust the stuck stationary blade without damage.

[0045] Example 3, reference Figure 1 to Figure 7 , which is the third embodiment of the present invention, and this embodiment further provides a movable tool to prevent the stationary blades of the axial flow fan from getting stuck, including a first limiting plate 101a and a second limiting plate 102a which are parallel to each other, the first limiting plate 101a and the second limiting plate 102a are similar in shape, and the area of ​​the first limiting plate 101a gradually increases toward the side close to the extension rod 103a.

[0046] Preferably, there is a gap between the first limiting plate 101a and the second limiting plate 102a, and the gap spacing is 5 mm when the first limiting plate 101a and the second limiting plate 102a are in a free state.

[0047] Furthermore, the first limiting plate 101a is a right-angled trapezoid in this embodiment, and the area of ​​the first limiting plate 101a gradually increases toward the side close to the extension rod 103a, that is, the short side of the right-angled trapezoid is located on the side away from the extension rod 103a.

[0048] The first limiting plate 101a and the second limiting plate 102a are mirror images, and there is a parallel and overlapping portion between the first limiting plate 101a and the second limiting plate 102a.

[0049] The first fixing unit 104a and the second fixing unit 104b are fixedly connected to the overlapping portion between the first limiting plate 101a and the second limiting plate 102a.

[0050] The first fixing unit 104a is fixedly connected to the side with a larger area between the first limiting plate 101a and the second limiting plate 102a, and the second fixing unit 104b is fixedly connected to the side with a smaller area between the first limiting plate 101a and the second limiting plate 102a.

[0051] The first limit plate 101a is parallel and symmetrical to the second limit plate 102a. The width of the first limit plate 101a and the second limit plate 102a is 40mm, the thickness is 1mm, the gap is 5mm when free, and the length is 150mm. The gap between the first limit plate 101a and the second limit plate 102a fits tightly with the blades of the axial flow fan. The head and tail of the overlap of the first limit plate 101a and the second limit plate 102a are designed with bolts with adjustable gaps to accommodate fan blades of various thicknesses. This design enables the tool to cleverly clamp the stationary blades, while allowing the operator to easily adjust the opening by applying force with the handle, avoiding damage to the fan blades due to brute force applied by the short handle during the adjustment process.

[0052] Reference formula: M=FL①, M is the torque required for the fan blades to rotate, which is related to the material of the fan and the size of the friction force. For a specific fan, M is a constant. F is the force applied by the human hand, L is the distance from the human hand to the center point of the contact surface between the fan blade and the first limit plate 101a and the second limit plate 102a, L=Lb+0.5Lp, where Lb is the length of the extension rod 103a, and Lp is the length of the first limit plate 101a or the second limit plate 102a. It can be seen from formula ① that when M is a constant, L is designed to be as large as possible, the force F applied by the human hand is small, and the force applied by the hand is easier to control. Prevent F from being too large due to L being too small, which in turn causes excessive torque torsion or bending, causing irreparable damage to the blades.

[0053] The operating rod 103a is 1000mm long and 30mm in diameter and is made of high-strength aluminum alloy. The operating rod 103a allows the operator to adjust the stator blades from a safe distance, reducing potential safety risks for the operator. The lever effect of the operating rod 103a allows small hand movements to be converted into significant adjustments to the stator blade opening, ensuring optimal performance of the fan.

[0054] Embodiment 4 is the fourth embodiment of the present invention, which further provides a method for using a movable tool to prevent the stator blades of an axial flow fan from getting stuck, including placing the fan blades between the first limit unit 101 and the second limit unit 102, rotating the extension 103 to adjust the fan blades to a proper angle, placing the fan blades between the first limit unit and the second limit unit, and rotating the extension to adjust the fan blades to a proper angle to simplify the maintenance process and reduce unplanned downtime. It allows factory and facility operators to quickly solve fan problems without affecting production operations; overcomes the stuck stator blades caused by corrosion, dirt or mechanical failure, effectively prevents secondary damage to the stator blades due to improper operation, and solves the problem of laborious operation through the design of the extension.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A movable tool for preventing the stationary blades of an axial flow fan from getting stuck, characterized in that: include, A clamping assembly (100) comprises a limiting member (100a) and an extension member (103) arranged below the limiting member (100a); The limiting member (100a) comprises a first limiting unit (101) and a second limiting unit (102), the first limiting unit (101) and the second limiting unit (102) are parallel, and the extension member (103) is fixedly connected to the limiting member (100a).

2. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 1, characterized in that: An adjusting member (104) is provided between the first limiting unit (101) and the second limiting unit (102).

3. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 2, characterized in that: The first limiting unit (101) comprises a first limiting plate (101a), and the second limiting unit (102) comprises a second limiting plate (102a).

4. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 3, characterized in that: The extension member (103) comprises an extension rod (103a), and the extension rod (103a) is fixedly connected to the first limiting plate (101a) and the second limiting plate (102a) respectively.

5. The movable tool for preventing the stator blades of an axial flow fan from getting stuck as claimed in claim 4, characterized in that: The adjusting member (104) comprises a first fixing unit (104a) and a second fixing unit (104b), wherein the first fixing unit (104a) and the second fixing unit (104b) are used for fixedly connecting the limiting member (100a).

6. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 5, characterized in that: The first limiting plate (101a) and the second limiting plate (102a) are parallel to each other, the first limiting plate (101a) and the second limiting plate (102a) are similar in shape, and the area of ​​the first limiting plate (101a) gradually increases towards the side close to the extension rod (103a).

7. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 6, characterized in that: The first limiting plate (101a) and the second limiting plate (102a) are arranged in a mirror image, and there is a parallel and overlapping portion between the first limiting plate (101a) and the second limiting plate (102a).

8. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 7, characterized in that: The first fixing unit (104a) and the second fixing unit (104b) are fixedly connected to the overlapping portion between the first limiting plate (101a) and the second limiting plate (102a).

9. The movable tool for preventing the stationary blades of an axial flow fan from getting stuck as claimed in claim 8, characterized in that: The first fixing unit (104a) is fixedly connected to the side with a larger area between the first limiting plate (101a) and the second limiting plate (102a), and the second fixing unit (104b) is fixedly connected to the side with a smaller area between the first limiting plate (101a) and the second limiting plate (102a).

10. A method for using a movable tool to prevent the stationary blades of an axial flow fan from getting stuck, characterized in that: The movable tool for preventing the stator blades of an axial flow fan from getting stuck according to any one of claims 1 to 9; and The fan blade is placed between the first limiting unit (101) and the second limiting unit (102), and the extension piece (103) is rotated to adjust the fan blade to a proper angle.

Images