Variable-paddle overturning type fan for engine

Abstract

The utility model relates to the technical field of engine heat dissipation, and discloses a variable-blade overturning type fan for an engine, which comprises a variable-blade fan, an overturning structure for overturning is arranged on the variable-blade fan, a fixing frame for fixing is arranged on the overturning structure, a fixing structure for fixing is arranged on the fixing frame, and the variable-blade fan is arranged on the fixing structure. The fixing structure is fixed to an engine, the fixing frame comprises an outer frame, the outer frame is fixedly connected with the fixing structure, a connecting plate is fixedly installed on the inner side of the outer frame, an inner frame is fixedly installed at the end, away from the outer frame, of the connecting plate, and the interior of the inner frame is movably connected with the overturning structure. The fixing structure comprises a fixing plate, the fixing plate is fixedly connected with the outer surface of the outer frame, and a long hexagon socket screw is arranged in the fixing plate. The variable-blade fan can be turned over conveniently, the variable-blade fan can be detached and maintained, and operation is easy and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of engine heat dissipation, in particular to a variable-paddle flip fan for an engine. Background Art

[0002] A variable pitch fan is a new type of fan that can change the fan's output air volume and pressure by adjusting the angle of the blades. Traditional fans adjust the air volume and pressure by changing the motor speed (or changing the impeller size, etc.), while variable pitch fans can accurately adjust the blade angle without changing the speed, thereby achieving precise control of the air volume and pressure. The main function of the engine is to burn the fuel in the internal combustion chamber to produce high-temperature and high-pressure gas, so that the gas generates kinetic energy under the action of the impeller or piston, and converts the energy into power for wheels and machines through a mechanical transmission device, thereby promoting movement and completing work.

[0003] Currently, variable pitch fans are usually installed on engines. The change in the speed of the variable pitch fans is caused by the change in the engine speed. The inventors have found that the variable pitch fans on the engines cannot be flipped. Therefore, we propose a variable pitch flip fan for engines. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a variable pitch flip fan for an engine, which has the advantages of convenient flipping of the variable pitch fan and solves the problem that the variable pitch fan on the engine cannot be flipped.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of conveniently flipping the variable pitch fan, the utility model provides the following technical solution: a variable pitch flip fan for an engine, comprising a variable pitch fan, the variable pitch fan is provided with a flipping structure for flipping, the flipping structure is provided with a fixing frame for fixing, the fixing frame is provided with a fixing structure for fixing, the fixing structure is fixed on the engine, so as to facilitate flipping of the variable pitch fan and disassembly and maintenance of the variable pitch fan, and the operation is simple and quick.

[0008] As a preferred technical solution of the utility model, the fixed frame includes an outer frame, the outer frame is fixedly connected to the fixed structure, a connecting plate is fixedly installed on the inner side of the outer frame, an inner frame is fixedly installed on the end of the connecting plate away from the outer frame, and the interior of the inner frame is movably connected to the flip structure.

[0009] As an optimal technical solution of the utility model, the fixing structure includes a fixing plate, which is fixedly connected to the outer surface of the outer frame, and a long hexagon socket bolt is arranged inside the fixing plate, and the long hexagon socket bolt is threadedly connected to the threaded hole reserved on the engine. The variable pitch fan located on the fixing frame is fixed to the engine by utilizing the fixing structure. At this time, the inside of the waist-shaped groove on the fixing plate and the inner cavity of the threaded hole reserved on the engine are in a vertical state, and then the long hexagon socket bolt is screwed in. At this time, the long hexagon socket bolt passes through the waist-shaped groove and screws into the inner cavity of the threaded hole reserved on the engine until the variable pitch fan is fixed to the engine by the long hexagon socket bolt. When the variable pitch fan needs to be disassembled and maintained, the above steps can be reversed, thereby facilitating the disassembly and maintenance of the variable pitch fan, and the operation is simple and quick.

[0010] As a preferred technical solution of the utility model, the fixing plate is in an inverted L-shape, and a waist-shaped groove is opened inside the fixing plate. The inner cavity of the waist-shaped groove is movably connected to the outer surface of the long hexagon socket bolt. The waist-shaped groove can ensure that the area of ​​the connection between the fixing plate and the engine is increased to enhance the stability of the connection point.

[0011] As a preferred technical solution of the utility model, a movable hole is opened on the inner wall of the inner frame, and the inner cavity of the movable hole is movably connected to the flip structure to facilitate the installation of the flip structure.

[0012] As a preferred technical solution of the utility model, the flip structure includes a stepping motor, the stepping motor is fixedly connected to the outer surface of the inner frame, and the output shaft of the stepping motor is movably connected to the inner cavity of the movable hole;

[0013] A rotating rod is fixedly mounted on the output shaft of the stepper motor, and one end of the rotating rod away from the output shaft is connected to the variable pitch fan. By starting the stepper motor, the output shaft on the stepper motor drives the rotating rod to rotate, and the output shaft rotates in the inner cavity of the movable hole, the rotating rod drives the arc-shaped clamping block to rotate, and the rotating rod and the arc-shaped clamping block are clamped in the clamping hole and the inner cavity of the arc-shaped clamping groove, and at the same time drive the variable pitch fan to flip, so as to facilitate the flipping of the variable pitch fan.

[0014] As a preferred technical solution of the present utility model, the flipping structure also includes a bearing, the outer surface of the bearing is fixedly connected to the inner cavity wall of the movable hole, a connecting rod is fixedly installed on the inner cavity wall of the bearing, and the end of the connecting rod away from the bearing is fixedly connected to the outer surface of the variable propeller fan. The connecting rod is driven by the variable propeller fan to rotate in the inner cavity of the bearing until the variable propeller fan is adjusted to flip to a suitable angle, thereby facilitating the flipping of the variable propeller fan.

[0015] As a preferred technical solution of the utility model, a clamping hole is provided inside the outer surface of the variable pitch fan, and the inner cavity of the clamping hole is movably connected with the rotating rod. An arc-shaped clamping groove is provided on the inner cavity wall of the clamping hole, and the inner cavity of the arc-shaped clamping groove is movably connected with the outer surface of the arc-shaped clamping block, so that the rotating rod and the arc-shaped clamping block can be clamped in the clamping hole and the arc-shaped clamping groove in a clamping manner.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a variable-pitch flip fan for an engine, which has the following beneficial effects:

[0018] 1. The engine uses a variable pitch flip fan. By starting the stepper motor, the output shaft on the stepper motor drives the rotating rod to rotate, and the output shaft rotates in the inner cavity of the movable hole, the rotating rod drives the arc-shaped clamping block to rotate, and the rotating rod and the arc-shaped clamping block are clamped in the clamping hole and the inner cavity of the arc-shaped clamping groove, and at the same time drive the variable pitch fan to flip. At the same time, the variable pitch fan drives the connecting rod to rotate in the inner cavity of the bearing until the variable pitch fan is adjusted to flip to a suitable angle, thereby facilitating the flipping of the variable pitch fan.

[0019] 2. The engine uses a variable pitch flip fan. The variable pitch fan located on the fixing frame is fixed to the engine by utilizing a fixing structure. At this time, the inside of the waist-shaped groove on the fixing plate and the inner cavity of the threaded hole reserved on the engine are in a vertical state, and then the long hexagon socket bolt is screwed in. At this time, the long hexagon socket bolt passes through the waist-shaped groove and screws into the inner cavity of the threaded hole reserved on the engine until the variable pitch fan is fixed to the engine by utilizing the long hexagon socket bolt. During this period, the waist-shaped groove can ensure that the area of ​​the connection between the fixing plate and the engine is increased to enhance the stability of the connection point. When the variable pitch fan needs to be disassembled and maintained, the above steps can be reversed, thereby facilitating the disassembly and maintenance of the variable pitch fan, and the operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a main stereoscopic view of the utility model;

[0021] Figure 2 This is an exploded perspective view of the utility model;

[0022] Figure 3 This is a three-dimensional diagram of the connection between the flip structure of the utility model and the fixing frame;

[0023] Figure 4 It is a three-dimensional diagram of the variable pitch fan of the utility model.

[0024] In the figure: 1. variable pitch fan; 11. connecting hole; 12. arc-shaped slot; 2. fixing frame; 21. outer frame; 22. connecting plate; 23. inner frame; 231. movable hole; 3. flip structure; 31. stepping motor; 32. rotating rod; 33. arc-shaped block; 34. bearing; 35. connecting rod; 4. fixing structure; 41. fixing plate; 411. waist-shaped slot; 42. long hexagon socket bolt. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, 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.

[0026] Example 1

[0027] Reference Figure 1-2 , which is the first embodiment of the utility model, provides a variable pitch flip fan for an engine, including a variable pitch fan 1, a flip structure 3 for flipping is provided on the variable pitch fan 1, a fixing frame 2 for fixing is provided on the flip structure 3, a fixing structure 4 for fixing is provided on the fixing frame 2, and the fixing structure 4 is fixed on the engine.

[0028] The fixing frame 2 includes an outer frame 21, which is fixedly connected to the fixing structure 4. A connecting plate 22 is fixedly installed on the inner side of the outer frame 21, and an inner frame 23 is fixedly installed on the end of the connecting plate 22 away from the outer frame 21. The interior of the inner frame 23 is movably connected to the flip structure 3.

[0029] The fixing structure 4 includes a fixing plate 41, which is fixedly connected to the outer surface of the outer frame 21. A long hexagon socket bolt 42 is arranged inside the fixing plate 41, and the long hexagon socket bolt 42 is threadedly connected to a threaded hole reserved on the engine.

[0030] The fixing plate 41 is in an inverted L-shape, and a waist-shaped groove 411 is provided inside the fixing plate 41 . The inner cavity of the waist-shaped groove 411 is movably connected to the outer surface of the long hexagon socket bolt 42 .

[0031] During use, the variable pitch fan 1 located on the fixing frame 2 is fixed to the engine by utilizing the fixing structure 4. At this time, the interior of the waist-shaped groove 411 on the fixing plate 41 and the inner cavity of the threaded hole reserved on the engine are in a vertical state, and then the long hexagon socket bolt 42 is screwed in. At this time, the long hexagon socket bolt 42 passes through the waist-shaped groove 411 and is screwed into the inner cavity of the threaded hole reserved on the engine until the variable pitch fan 1 is fixed to the engine by utilizing the long hexagon socket bolt 42. During this period, the waist-shaped groove 411 can ensure that the area of ​​the connection between the fixing plate 41 and the engine is increased to enhance the stability of the connection point. When the variable pitch fan 1 needs to be disassembled and maintained, the above steps can be reversed, thereby facilitating the disassembly and maintenance of the variable pitch fan 1, and the operation is simple and quick.

[0032] Example 2

[0033] Reference Figure 1-4 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: a movable hole 231 is opened on the inner wall of the inner frame 23, and the inner cavity of the movable hole 231 is movably connected to the flip structure 3.

[0034] The flip structure 3 includes a stepper motor 31, the stepper motor 31 is fixedly connected to the outer surface of the inner frame 23, and the output shaft of the stepper motor 31 is movably connected to the inner cavity of the movable hole 231;

[0035] A rotating rod 32 is fixedly mounted on the output shaft of the stepping motor 31 , and one end of the rotating rod 32 away from the output shaft is connected to the variable pitch fan 1 .

[0036] The flip structure 3 also includes a bearing 34, the outer surface of the bearing 34 is fixedly connected to the inner wall of the movable hole 231, and a connecting rod 35 is fixedly installed on the inner wall of the bearing 34, and the end of the connecting rod 35 away from the bearing 34 is fixedly connected to the outer surface of the variable pitch fan 1.

[0037] A snap-in hole 11 is provided inside the outer surface of the variable pitch fan 1, and the inner cavity of the snap-in hole 11 is movably connected to the rotating rod 32. An arc-shaped snap-in groove 12 is provided on the inner cavity wall of the snap-in hole 11, and the inner cavity of the arc-shaped snap-in groove 12 is movably connected to the outer surface of the arc-shaped snap block 33.

[0038] During use, by starting the stepper motor 31 fixed on the inner frame 23, the output shaft on the stepper motor 31 drives the rotating rod 32 to rotate, and the output shaft rotates in the inner cavity of the movable hole 231, the rotating rod 32 drives the arc block 33 to rotate, and the rotating rod 32 and the arc block 33 are clamped in the inner cavity of the clamping hole 11 and the arc groove 12, and at the same time drive the variable propeller fan 1 to flip, at the same time, the variable propeller fan 1 drives the connecting rod 35 to rotate in the inner cavity of the bearing 34 until the variable propeller fan 1 is adjusted to a suitable angle, thereby facilitating the flipping of the variable propeller fan 1.

[0039] The remaining structures are the same as those of Example 1.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A variable pitch flip fan for an engine, comprising a variable pitch fan (1), characterized in that: The variable pitch fan (1) is provided with a flipping structure (3) for flipping, the flipping structure (3) is provided with a fixing frame (2) for fixing, the fixing frame (2) is provided with a fixing structure (4) for fixing, and the fixing structure (4) is fixed on the engine.

2. The variable pitch flip fan for an engine according to claim 1, characterized in that: The fixing frame (2) comprises an outer frame (21), the outer frame (21) being fixedly connected to the fixing structure (4), a connecting plate (22) being fixedly mounted on the inner side of the outer frame (21), an inner frame (23) being fixedly mounted on one end of the connecting plate (22) away from the outer frame (21), and the interior of the inner frame (23) being movably connected to the flip structure (3).

3. The variable pitch flip fan for an engine according to claim 2, characterized in that: The fixing structure (4) comprises a fixing plate (41), the fixing plate (41) being fixedly connected to the outer surface of the outer frame (21), a long hexagon socket bolt (42) being arranged inside the fixing plate (41), and the long hexagon socket bolt (42) being threadedly connected to a threaded hole reserved on the engine.

4. The variable pitch flip fan for an engine according to claim 3, characterized in that: The fixing plate (41) is in an inverted L-shape, and a waist-shaped groove (411) is provided inside the fixing plate (41). The inner cavity of the waist-shaped groove (411) is movably connected to the outer surface of the long hexagon socket bolt (42).

5. The variable pitch flip fan for an engine according to claim 2, characterized in that: A movable hole (231) is provided on the inner side wall of the inner frame (23), and the inner cavity of the movable hole (231) is movably connected to the turnover structure (3).

6. The variable pitch flip fan for an engine according to claim 5, characterized in that: The flip structure (3) comprises a stepping motor (31), the stepping motor (31) is fixedly connected to the outer surface of the inner frame (23), and the output shaft of the stepping motor (31) is movably connected to the inner cavity of the movable hole (231); A rotating rod (32) is fixedly mounted on the output shaft of the stepping motor (31), and one end of the rotating rod (32) away from the output shaft is connected to the variable pitch fan (1).

7. The variable pitch flip fan for an engine according to claim 6, characterized in that: The flip structure (3) further comprises a bearing (34), the outer surface of the bearing (34) being fixedly connected to the inner cavity wall of the movable hole (231), a connecting rod (35) being fixedly mounted on the inner cavity wall of the bearing (34), and an end of the connecting rod (35) away from the bearing (34) being fixedly connected to the outer surface of the variable pitch fan (1).

8. The variable pitch flip fan for an engine according to claim 6, characterized in that: A clamping hole (11) is provided inside the outer surface of the variable pitch fan (1), the inner cavity of the clamping hole (11) is movably sleeved with the rotating rod (32), an arc-shaped clamping groove (12) is provided on the inner cavity wall of the clamping hole (11), and the inner cavity of the arc-shaped clamping groove (12) is movably clamped with the outer surface of the arc-shaped clamping block (33).

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