Blade tenon fixing device for fan blade impact test

Abstract

The utility model belongs to the field of blade tenon fixing devices, and particularly relates to a blade tenon fixing device for a fan blade impact test, which comprises a fixing seat, a lower pressing frame is rotatably connected in the fixing seat, an adjusting mechanism is arranged on the fixing seat, two symmetrically distributed limiting rings are fixedly connected on the outer side of the lower pressing frame, and the limiting rings are fixedly connected on the outer side of the lower pressing frame. And a limiting column is slidably connected into the fixing base, a moving rod is fixedly connected to the side, away from the lower pressing frame, of the limiting column, a pull ring is fixedly connected to the end, away from the limiting column, of the moving rod, and a spring is arranged on the outer side of the moving rod. According to the utility model, the positive and negative screw rod, the threaded frame, the knob and other structures are additionally arranged on the fixed seat, so that the insertion column can be driven to move through the threaded fit between the positive and negative screw rod and the threaded frame before the blade is limited, and the insertion column can be adjusted according to the specific distance between the through holes of the blade in the moving process; therefore, the device is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of blade tenon fixing devices, in particular to a blade tenon fixing device for a fan blade impact test. Background Art

[0002] According to the fan blade proposed in the patent application publication number: CN111852938A, the invention discloses a fan blade, including a blade body, a C-shaped slot is opened at one end of the blade body, a locking through hole is opened at the edge of the C-shaped slot, the blade body includes a horizontal mounting plate and an air guide part integrally formed on the horizontal mounting plate, the locking through hole is on the horizontal mounting plate, the cross-section of the air guide part is arched, one edge of the air guide part forms an arc-shaped edge with the edge of the horizontal mounting plate, the other edge of the air guide part forms an outwardly curved arc-shaped twisted edge at the connection with the horizontal mounting plate, an n-shaped air inlet guide part is integrally formed on the air guide part near the arc-shaped twisted edge, when the blade body rotates, the airflow enters from the n-shaped air inlet guide part, and is guided by the arched air guide part to separate from the blade body from the arc-shaped edge. The structure of the present invention is reasonable, which can greatly improve the efficiency of the airflow of the blade body, improve the blowing effect of the fan blade, and is stable and reliable to use, with strong applicability and good practicality. In the process of producing the fan blades in the prior art, the strength of the fan blades will be tested, and the impact test is a relatively important link in the testing process. During the impact test, the blades can be clamped and limited by the tenon fixing device, and then the test is carried out by the impact device;

[0003] However, the tenon fixing device in the prior art needs to be inserted into the through hole of the blade to limit the blade during use, but the spacing between the through holes of blades of different specifications is different, the insertion column of the fixing device is not easy to adjust, affecting the applicability of the device, and the lower pressure frame is not easy to disassemble, affecting the practical efficiency of detection. Therefore, it is necessary to improve the prior art. Utility Model Content

[0004] The utility model aims to provide a blade tenon fixing device for a fan blade impact test, which solves the problems that the fixing device has low applicability and the lower pressure frame is inconvenient to separate from the blade.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blade tenon fixing device for a fan blade impact test, comprising a fixing seat, the internal rotation of the fixing seat is connected to a lower pressure frame, the fixing seat is provided with an adjustment mechanism, the outer side of the lower pressure frame is fixedly connected to two symmetrically distributed limit rings, the internal sliding connection of the fixing seat is connected to a limit column, the side of the limit column away from the lower pressure frame is fixedly connected to a moving rod, the end of the moving rod away from the limiting column is fixedly connected to a pull ring, a spring is provided on the outer side of the moving rod, and the lower end of the fixing seat is fixedly connected to four evenly distributed mounting seats.

[0006] Preferably, one end of the spring is fixedly connected to the limiting column, and the other end of the spring is fixedly connected to the fixing seat, and the spring can drive the limiting column to automatically reset through elastic force.

[0007] Preferably, the limiting ring is slidably connected to the fixed seat, the limiting column is slidably connected to the limiting ring, the moving rod is slidably connected to the fixed seat, the pull ring is in contact with the fixed seat, and the limiting column can limit the lower pressure frame through the limiting ring.

[0008] Preferably, the adjustment mechanism includes an insertion column, the insertion column is slidably connected inside the fixing seat, the lower end of the insertion column is fixedly connected to a threaded frame, the interior of the fixing seat is provided with forward and reverse screws via bearings, the front of the forward and reverse screws is fixedly connected to a knob, a reinforcement groove is provided inside the lower pressure frame, the reinforcement groove is slidably connected to the insertion column, a guide rod is fixedly connected inside the lower end of the fixing seat, and the knob can drive the forward and reverse screws to rotate.

[0009] Preferably, a rubber ring is fixedly connected to one end of the knob close to the fixing seat, and the rubber ring is rotatably connected to the fixing seat. The rubber ring can increase the rotation resistance of the knob and effectively prevent the knob from rotating on its own.

[0010] Preferably, the threaded frame is slidably connected to the fixing seat, and the forward and reverse screws are connected to the threaded frame via threads. The forward and reverse screws can drive the insertion column to move by cooperating with the threads of the threaded frame.

[0011] Preferably, two symmetrically distributed guide frames are fixedly connected to the outer side of the threaded frame, and the guide frames are slidably connected to the guide rods, and the guide rods can guide the guide frames.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model adds structures such as forward and reverse screws, a threaded frame and a knob to the fixed seat. Before the blade is limited, the threaded cooperation between the forward and reverse screws and the threaded frame can drive the insertion column to move. During the movement, the insertion column can be adjusted according to the through-hole spacing of the specific blade, thereby making the device more convenient to use.

[0014] 2. The utility model adds structures such as a limit column, a movable rod and a spring inside the fixed seat. During use, the elastic force of the spring can drive the limit column to slide into the limit ring of the lower pressure frame to limit the lower pressure frame. When the limit of the lower pressure frame needs to be released, the blade can be easily replaced by simply detaching the limit column from the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structure of the utility model is three-dimensional Figure 1 ;

[0016] Figure 2 The overall structure of the utility model is three-dimensional Figure 2 ;

[0017] Figure 3 For the utility model Figure 1 A partial structural cross-sectional view;

[0018] Figure 4 For the utility model Figure 1 A three-dimensional diagram of the local structure;

[0019] Figure 5 For the utility model Figure 1 A three-dimensional diagram of a lower pressing frame;

[0020] Figure 6 For the utility model Figure 3 A-section structure enlarged view.

[0021] In the figure: 1. fixed seat; 2. lower pressure frame; 3. adjustment mechanism; 4. limit ring; 5. limit column; 6. moving rod; 7. pull ring; 8. spring; 9. mounting seat; 31. insertion column; 32. threaded frame; 33. forward and reverse screws; 34. knob; 35. rubber ring; 36. guide frame; 37. guide rod; 38. reinforcement groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A blade tenon fixing device for a fan blade impact test comprises a fixing seat 1, the fixing seat 1 is internally rotatably connected to a lower pressure frame 2, an adjusting mechanism 3 is arranged on the fixing seat 1, two symmetrically distributed limiting rings 4 are fixedly connected to the outer side of the lower pressure frame 2, a limiting column 5 is internally slidably connected to the fixing seat 1, a moving rod 6 is fixedly connected to the side of the limiting column 5 away from the lower pressure frame 2, a pull ring 7 is fixedly connected to the end of the moving rod 6 away from the limiting column 5, a spring 8 is arranged on the outer side of the moving rod 6, and four evenly distributed mounting seats 9 are fixedly connected to the lower end of the fixing seat 1.

[0024] See also Figure 1 , Figure 3 , Figure 6 One end of the spring 8 is fixedly connected to the limit column 5, and the other end of the spring 8 is fixedly connected to the fixed seat 1. The spring 8 can drive the limit column 5 to automatically reset through elastic force. The limit ring 4 is slidably connected to the fixed seat 1, the limit column 5 is slidably connected to the limit ring 4, the moving rod 6 is slidably connected to the fixed seat 1, the pull ring 7 contacts the fixed seat 1, and the limit column 5 can limit the lower pressure frame 2 through the limit ring 4.

[0025] See also Figure 1 , Figure 2 , Figure 5 The adjusting mechanism 3 includes an insert column 31, the insert column 31 is slidably connected inside the fixed seat 1, the lower end of the insert column 31 is fixedly connected to a threaded frame 32, a positive and negative screw 33 is installed inside the fixed seat 1 through a bearing, and a knob 34 is fixedly connected to the front of the positive and negative screw 33, a reinforcement groove 38 is opened inside the lower pressure frame 2, and the reinforcement groove 38 is slidably connected to the insert column 31, a guide rod 37 is fixedly connected inside the lower end of the fixed seat 1, and the knob 34 can drive the positive and negative screw 33 to rotate, and the end of the knob 34 close to the fixed seat 1 is fixedly connected to a rubber The rubber ring 35 is rotatably connected to the fixing seat 1. The rubber ring 35 can increase the rotation resistance of the knob 34, which can effectively prevent the knob 34 from rotating. The threaded frame 32 is slidably connected to the fixing seat 1. The forward and reverse screws 33 are threadedly connected to the threaded frame 32. The forward and reverse screws 33 can drive the insertion column 31 to move by cooperating with the threads between the threaded frame 32. The outer side of the threaded frame 32 is fixedly connected to two symmetrically distributed guide frames 36. The guide frame 36 is slidably connected to the guide rod 37, and the guide rod 37 can guide the guide frame 36.

[0026] The specific implementation process of the utility model is as follows: when in use, the knob 34 is turned. When the force of turning the knob 34 is greater than the friction force between the rubber ring 35 and the fixing seat 1, the knob 34 drives the forward and reverse screws 33 to rotate. During the rotation process, the forward and reverse screws 33 can drive the insertion column 31 to move by cooperating with the threads between the threaded frame 32. When the spacing between the two insertion columns 31 is consistent with the spacing between the through holes of the detection blades, the rotation of the knob 34 can be stopped, and then the pull ring 7 is pulled. The pull ring 7 drives the limit column 5 to move through the moving rod 6 and compresses the spring 8. When the limit column 5 is separated from the limit ring 4, the lower pressure frame 2 can be flipped upward. After flipping, the target blade is placed in the interior of the fixing seat 1. After the placement is completed, the lower pressure frame 2 is flipped and reset. After resetting, the pull ring 7 is released, and the spring 8 is reset. The spring 8 can drive the limit column 5 to automatically slide into the interior of the limit ring 4 through the elastic force to limit the lower pressure frame 2, thereby making the device more convenient to use and improving the test efficiency.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade tenon fixing device for a fan blade impact test, comprising a fixing seat (1), characterized in that: The fixed seat (1) is internally rotatably connected to a lower pressure frame (2), an adjusting mechanism (3) is provided on the fixed seat (1), the outer side of the lower pressure frame (2) is fixedly connected to two symmetrically distributed limiting rings (4), the internal sliding connection of the fixed seat (1) is connected to a limiting column (5), the side of the limiting column (5) away from the lower pressure frame (2) is fixedly connected to a moving rod (6), the end of the moving rod (6) away from the limiting column (5) is fixedly connected to a pull ring (7), a spring (8) is provided on the outer side of the moving rod (6), and the lower end of the fixed seat (1) is fixedly connected to four evenly distributed mounting seats (9).

2. A blade tenon fixing device for a fan blade impact test according to claim 1, characterized in that: One end of the spring (8) is fixedly connected to the limiting column (5), and the other end of the spring (8) is fixedly connected to the fixing seat (1).

3. A blade tenon fixing device for a fan blade impact test according to claim 1, characterized in that: The limiting ring (4) is slidably connected to the fixing seat (1), the limiting column (5) is slidably connected to the limiting ring (4), the moving rod (6) is slidably connected to the fixing seat (1), and the pull ring (7) is in contact with the fixing seat (1).

4. A blade tenon fixing device for a fan blade impact test according to claim 1, characterized in that: The adjusting mechanism (3) comprises an insert column (31), the insert column (31) is slidably connected inside the fixing seat (1), the lower end of the insert column (31) is fixedly connected to a threaded frame (32), the inside of the fixing seat (1) is provided with a forward and reverse screw rod (33) through a bearing, the front of the forward and reverse screw rod (33) is fixedly connected to a knob (34), a reinforcement groove (38) is provided inside the lower pressure frame (2), the reinforcement groove (38) is slidably connected to the insert column (31), and the lower end of the fixing seat (1) is fixedly connected to a guide rod (37).

5. A blade tenon fixing device for a fan blade impact test according to claim 4, characterized in that: One end of the knob (34) close to the fixing seat (1) is fixedly connected to a rubber ring (35), and the rubber ring (35) is rotatably connected to the fixing seat (1).

6. A blade tenon fixing device for a fan blade impact test according to claim 4, characterized in that: The threaded frame (32) is slidably connected to the fixing seat (1), and the forward and reverse screws (33) are connected to the threaded frame (32) via threads.

7. A blade tenon fixing device for a fan blade impact test according to claim 4, characterized in that: Two symmetrically distributed guide frames (36) are fixedly connected to the outer side of the threaded frame (32), and the guide frames (36) are slidably connected to the guide rods (37).

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