High and low temperature treatment device used before installation of aircraft bearing bush

Abstract

The utility model relates to the technical field of bearing bush pretreatment, in particular to a high and low temperature treatment device before installation of an aircraft bearing bush, which comprises a table body, a conveying mechanism is installed on the top of the table body, a fixing mechanism is installed on the surface of the conveying mechanism, and a heating mechanism is installed on the rear side of the top of the table body. A cooling mechanism is installed on the right side of the back face of the table body. The fixing mechanism for fixing the bearing bush is conveyed to the position below the induction heating coil, the hydraulic cylinder is controlled to stretch to enable the induction heating coil to stretch into the bearing bush, then the induction heating coil conducts heating treatment on the bearing bush, the hydraulic cylinder is controlled to retract after heating is completed, and therefore the bearing bush can be heated. And the heated bearing bush is conveyed to the position below the spraying ring, operation of the conveying pump is controlled, liquid nitrogen in the liquid nitrogen box is sprayed out of the spraying ring through the first bent pipe and the second bent pipe, cooling treatment is conducted on the bearing bush, the hardness, abrasion resistance and fatigue resistance of the bearing bush are improved, and the service life of the bearing bush is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing bushing pretreatment technology, specifically a high and low temperature treatment device for aircraft bearing bushings before installation. Background Technology

[0002] Aircraft bearing bushings are crucial components of aircraft transmission systems, and their performance directly impacts aircraft safety and reliability. High and low temperature treatment is required before installation. Research and analysis have revealed that commercially available high and low temperature treatment devices have the following drawbacks to some extent.

[0003] Existing aircraft bearing bushings cannot be easily loaded and unloaded, requiring manual loading and unloading, which poses certain dangers. Furthermore, their high and low temperature handling performance is poor, leading to wear and cracks after installation. Utility Model Content

[0004] The purpose of this invention is to provide a high and low temperature treatment device for aircraft bearing bushings before installation, which facilitates the loading and unloading of bearing bushings and has the advantages of convenient loading and unloading and good treatment effect.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A high and low temperature treatment device for aircraft bearing bushing installation includes a platform, a conveying mechanism installed on the top of the platform, a fixing mechanism installed on the surface of the conveying mechanism, a heating mechanism installed on the rear side of the top of the platform, a cooling mechanism installed on the right side of the back of the platform, and baffles fixedly connected to both sides of the top of the platform by support rods.

[0007] The conveying mechanism includes a vertical plate, a rotating rod, a sprocket, a chain, and a motor; the fixing mechanism includes a connecting rod, a placement frame, a square rod, a clamping plate, a short plate, a long plate, and a spring; the heating mechanism includes a frame, a hydraulic cylinder, and an induction heating coil; and the cooling mechanism includes a liquid nitrogen tank, a delivery pump, a first bend pipe, a second bend pipe, and a spray ring.

[0008] Preferably, there are four vertical plates, which are fixedly connected to the four corners of the top of the platform by bolts. There are two rotating rods, which are rotatably embedded in the surface of the vertical plates by bearings. There are four sprockets, which are fixedly sleeved on the front and rear ends of the two rotating rods. There are two chains, which are driven and sleeved on the surface of the sprockets. One side of the motor is fixedly connected to the front of the left front vertical plate by bolts. The rotating shaft of the motor is fixedly connected to the front end of the left rotating rod.

[0009] Preferably, the end of the connecting rod away from the placement frame is fixedly connected to the surface of the chain, and the end of the connecting rod away from the chain is fixedly connected to the surface of the placement frame. One end of the square rod slides through the surface of the placement frame. The end of the square rod located in the inner cavity of the placement frame is fixedly connected to one side of the clamping plate. The sides of the short plate and the long plate near the square rod are both fixedly connected to the end of the square rod away from the clamping plate. The spring is movably sleeved on the surface of the square rod, and the two ends of the spring are fixedly connected to the surface of the square rod and the surface of the placement frame, respectively.

[0010] Preferably, the bottom of the frame is fixedly connected to the rear side of the top of the platform by bolts, one side of the hydraulic cylinder is fixedly connected to the top of the frame by bolts, and the output end of the hydraulic cylinder passes through the frame and is fixedly connected to the top of the induction heating coil.

[0011] Preferably, the front of the liquid nitrogen tank is fixedly connected to the right side of the back of the platform via a support, the surface of the delivery pump is fixedly connected to the top of the liquid nitrogen tank via a base, one end of the first bend is connected to the input end of the delivery pump, the other end of the first bend extends into the inner cavity of the liquid nitrogen tank, and the two ends of the second bend are respectively connected to the output end of the delivery pump and the back of the spray ring.

[0012] Preferably, a guide frame is fixedly connected to the right side of the top of the platform, a rubber pad is fixedly connected to the inner wall of the guide frame, and a collection frame is fixedly connected to the right side of the top of the platform via a support rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model controls the operation of a motor to rotate a connected rotating rod, which in turn rotates a sprocket on the rotating rod, driving the chain and another rotating rod to rotate. This causes the fixing mechanism to rotate continuously. As the fixing mechanism on the chain rotates, the long plate on the left end of the fixing mechanism, which moves upward continuously, contacts the left-side baffle, causing the baffle to block it. This pulls the square rod and clamp connected to the long plate, and stretches the spring, placing the bearing bush between the two clamps. As the fixing mechanism rotates, the long plate moves away from the baffle, and the spring rebounds, fixing the bearing bush in place. Similarly, the long plate releases when it contacts the right-side baffle. This design allows for convenient loading and unloading of bearing bushes without the need for manual loading.

[0015] 2. This utility model involves a fixing mechanism with a fixed bearing bushing being moved to the area below the induction heating coil. The extension of the hydraulic cylinder is controlled to allow the induction heating coil to extend into the bearing bushing. The induction heating coil then heats the bearing bushing. After heating, the hydraulic cylinder is retracted, and the heated bearing bushing is moved to the area below the spray ring. The operation of the delivery pump is controlled to spray liquid nitrogen from the liquid nitrogen tank through the first and second bends from the spray ring, cooling the bearing bushing. Through high and low temperature treatment, the microstructure of the bearing bushing material can be improved, increasing its hardness, wear resistance, and fatigue resistance, thus extending its service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0018] Figure 3 This is a three-dimensional schematic diagram of the fixing mechanism of this utility model.

[0019] In the diagram: 1. Platform; 2. Conveying mechanism; 21. Vertical plate; 22. Rotating rod; 23. Sprocket; 24. Chain; 25. Motor; 3. Fixing mechanism; 31. Connecting rod; 32. Placement frame; 33. Square rod; 34. Clamping plate; 35. Short plate; 36. Long plate; 37. Spring; 4. Heating mechanism; 41. Frame; 42. Hydraulic cylinder; 43. Induction heating coil; 5. Cooling mechanism; 51. Liquid nitrogen tank; 52. Conveying pump; 53. First bend pipe; 54. Second bend pipe; 55. Spray ring; 6. Baffle; 7. Guide frame; 8. Rubber pad; 9. Collection frame. Detailed Implementation

[0020] Please see Figures 1-3 The high and low temperature treatment device for the aircraft bearing bushing before installation includes a platform 1, a conveying mechanism 2 installed on the top of the platform 1, a fixing mechanism 3 installed on the surface of the conveying mechanism 2, a heating mechanism 4 installed on the rear side of the top of the platform 1, a cooling mechanism 5 installed on the right side of the back of the platform 1, and baffles 6 fixedly connected to both sides of the top of the platform 1 by support rods.

[0021] The conveying mechanism 2 includes a vertical plate 21, a rotating rod 22, a sprocket 23, a chain 24, and a motor 25. The fixing mechanism 3 includes a connecting rod 31, a placement frame 32, a square rod 33, a clamping plate 34, a short plate 35, a long plate 36, and a spring 37. The heating mechanism 4 includes a frame 41, a hydraulic cylinder 42, and an induction heating coil 43. The cooling mechanism 5 includes a liquid nitrogen tank 51, a delivery pump 52, a first bend pipe 53, a second bend pipe 54, and a spray ring 55.

[0022] Please see Figure 1 and Figure 2There are four vertical plates 21, which are fixedly connected to the four corners of the top of the platform 1 by bolts. There are two rotating rods 22, which are rotatably embedded in the surface of the vertical plates 21 by bearings. There are four sprockets 23, which are fixedly sleeved on the front and rear ends of the two rotating rods 22. There are two chains 24, which are driven and sleeved on the surface of the sprockets 23.

[0023] By setting sprocket 23 and chain 24, the chain rotates under the transmission of rotating rod 22, thereby driving multiple fixed mechanisms 3 to move in a cycle. One side of motor 25 is fixedly connected to the front of vertical plate 21 on the left front side by bolts, and the rotating shaft of motor 25 is fixedly connected to the front end of rotating rod 22 on the left side.

[0024] Please see Figure 1 and Figure 3 The end of the connecting rod 31 away from the placement frame 32 is fixedly connected to the surface of the chain 24. The end of the connecting rod 31 away from the chain 24 is fixedly connected to the surface of the placement frame 32. One end of the square rod 33 slides through the surface of the placement frame 32. The end of the square rod 33 located in the inner cavity of the placement frame 32 is fixedly connected to one side of the clamping plate 34. The short plate 35 and the long plate 36 are both fixedly connected to the end of the square rod 33 away from the clamping plate 34 on the side closest to the square rod 33.

[0025] By setting the short plate 35, it does not contact the baffle 6 during the movement, allowing the long plate 36 to contact the baffle 6, causing the square rod 33 connected to the long plate 36 to move, thereby moving the two clamping plates 34 away from each other, facilitating unloading and loading. After the long plate 36 is separated from the baffle 6, the two clamping plates 34 move closer to each other, and the spring 37 is movably sleeved on the surface of the square rod 33. The two ends of the spring 37 are fixedly connected to the surface of the square rod 33 and the surface of the placement frame 32, respectively. By setting the spring 37, under the action of its elastic force, the clamping plates 34 on the square rod 33 clamp and fix the bearing bushing.

[0026] Please see Figure 1 and Figure 2 The bottom of the frame 41 is fixedly connected to the rear side of the top of the platform 1 by bolts, and one side of the hydraulic cylinder 42 is fixedly connected to the top of the frame 41 by bolts. The output end of the hydraulic cylinder 42 passes through the frame 41 and is fixedly connected to the top of the induction heating coil 43.

[0027] By setting an induction heating coil 43, when an alternating current passes through the induction coil, an alternating magnetic field is generated. When this magnetic field encounters a metal material, eddy currents are generated inside the material. The eddy currents flow inside the metal conductor and generate heat, thereby causing the metal workpiece to heat up rapidly. By setting a guide frame 7, it is convenient to guide the bearing bush after it has been cut.

[0028] Please see Figure 1 and Figure 2The front of the liquid nitrogen tank 51 is fixedly connected to the right side of the back of the platform 1 via a support. The surface of the delivery pump 52 is fixedly connected to the top of the liquid nitrogen tank 51 via a base. One end of the first bend 53 is connected to the input end of the delivery pump 52, and the other end of the first bend 53 extends into the inner cavity of the liquid nitrogen tank 51. The two ends of the second bend 54 are connected to the output end of the delivery pump 52 and the back of the spray ring 55, respectively.

[0029] Please see Figure 1 A guide frame 7 is fixedly connected to the right side of the top of the platform 1. A rubber pad 8 is fixedly connected to the inner wall of the guide frame 7. The rubber pad 8 serves to buffer and protect the falling bearing bushing. A collection frame 9 is fixedly connected to the right side of the top of the platform 1 via a support rod. The collection frame 9 is used to catch the liquid nitrogen dripping during the cooling process.

[0030] In use, the operation of the motor 25 is controlled to make the rotating rod 22 connected to it rotate, which in turn makes the sprocket 23 on the rotating rod 22 rotate, driving the chain 24 and the sprocket 23 on another rotating rod 22 to rotate, which in turn makes the fixing mechanism 3 rotate continuously. When the fixing mechanism 3 on the chain 24 rotates with it, the long plate 36 on the fixing mechanism 3, which moves upward on the left end, contacts the baffle 6 on the left side, causing the baffle 6 to block it, which in turn pulls the square rod 33 and the clamping plate 34 connected to the long plate 36 to move and the spring 37 to stretch, placing the bearing bushing between the two clamping plates 34.

[0031] As the fixing mechanism 3 rotates, the long plate 36 moves away from the baffle 6. Under the action of the spring 37, the two clamps 34 fix the bearing bush. Similarly, when the long plate 36 contacts the baffle 6 on the right, it is released, which makes it convenient to load and unload the bearing bush without manual unloading.

[0032] By moving the fixing mechanism 3 with the fixed bearing bushing below the induction heating coil 43, the extension of the hydraulic cylinder 42 is controlled to allow the induction heating coil 43 to extend into the bearing bushing. Then, the induction heating coil 43 heats the bearing bushing. After heating, the retraction of the hydraulic cylinder 42 is controlled to move the heated bearing bushing below the spray ring 55. The operation of the delivery pump 52 is controlled to spray liquid nitrogen from the liquid nitrogen tank 51 through the first bend pipe 53 and the second bend pipe 54 from the spray ring 55 to cool the bearing bushing. Through high and low temperature treatment, the microstructure of the bearing bushing material can be improved, its hardness, wear resistance and fatigue resistance can be increased, and its service life can be extended.

[0033] In summary, the high and low temperature treatment device for aircraft bearing bushings before installation, through the cooperation of platform 1, conveying mechanism 2, fixing mechanism 3, heating mechanism 4, cooling mechanism 5 and baffle 6, solves the problems of inconvenient loading and unloading of bearing bushings, which required manual loading and unloading, posed certain dangers, and poor high and low temperature treatment effect, leading to wear and cracks after installation.

Claims

1. A high and low temperature treatment device for aircraft bearing bushings before installation, characterized in that: The platform includes a platform (1), a conveying mechanism (2) is installed on the top of the platform (1), a fixing mechanism (3) is installed on the surface of the conveying mechanism (2); a heating mechanism (4) is installed on the rear side of the top of the platform (1), a cooling mechanism (5) is installed on the right side of the back of the platform (1), and baffles (6) are fixedly connected to both sides of the top of the platform (1) by support rods. The conveying mechanism (2) includes a vertical plate (21), a rotating rod (22), a sprocket (23), a chain (24), and a motor (25); the fixing mechanism (3) includes a connecting rod (31), a placement frame (32), a square rod (33), a clamping plate (34), a short plate (35), a long plate (36), and a spring (37); the heating mechanism (4) includes a frame (41), a hydraulic cylinder (42), and an induction heating coil (43); the cooling mechanism (5) includes a liquid nitrogen tank (51), a delivery pump (52), a first bend pipe (53), a second bend pipe (54), and a spray ring (55).

2. The high and low temperature treatment device before installation of aircraft bearing bushings according to claim 1, characterized in that: There are four vertical plates (21), which are fixedly connected to the four corners of the top of the platform (1) by bolts; there are two rotating rods (22), which are rotatably embedded in the surface of the vertical plates (21) by bearings. There are four sprockets (23), which are fixedly sleeved on the front and rear ends of the two rotating rods (22); there are two chains (24), which are respectively sleeved on the surface of the sprockets (23); one side of the motor (25) is fixedly connected to the front of the left front vertical plate (21) by bolts; the rotating shaft of the motor (25) is fixedly connected to the front end of the left rotating rod (22).

3. The high and low temperature treatment device before installation of aircraft bearing bushings according to claim 1, characterized in that: The end of the connecting rod (31) away from the placement frame (32) is fixedly connected to the surface of the chain (24), the end of the connecting rod (31) away from the chain (24) is fixedly connected to the surface of the placement frame (32), one end of the square rod (33) slides through the surface of the placement frame (32), and one end of the square rod (33) located in the inner cavity of the placement frame (32) is fixedly connected to one side of the clamping plate (34). The short plate (35) and the long plate (36) are fixedly connected to the side of the square rod (33) away from the clamp plate (34) on the side closest to the square rod (33). The spring (37) is movably sleeved on the surface of the square rod (33). The two ends of the spring (37) are fixedly connected to the surface of the square rod (33) and the placement frame (32) respectively.

4. The high and low temperature treatment device before installation of aircraft bearing bushings according to claim 1, characterized in that: The bottom of the frame (41) is fixedly connected to the rear side of the top of the platform (1) by bolts, and one side of the hydraulic cylinder (42) is fixedly connected to the top of the frame (41) by bolts. The output end of the hydraulic cylinder (42) passes through the frame (41) and is fixedly connected to the top of the induction heating coil (43).

5. The high and low temperature treatment device before installation of aircraft bearing bushings according to claim 1, characterized in that: The front of the liquid nitrogen tank (51) is fixedly connected to the right side of the back of the platform (1) via a support, and the surface of the delivery pump (52) is fixedly connected to the top of the liquid nitrogen tank (51) via a base; one end of the first bend (53) is connected to the input end of the delivery pump (52), and the other end of the first bend (53) extends into the inner cavity of the liquid nitrogen tank (51); the two ends of the second bend (54) are respectively connected to the output end of the delivery pump (52) and the back of the spray ring (55).

6. The high and low temperature treatment device before installation of aircraft bearing bushings according to claim 1, characterized in that: A guide frame (7) is fixedly connected to the right side of the top of the platform (1), and a rubber pad (8) is fixedly connected to the inner wall of the guide frame (7). A collection frame (9) is fixedly connected to the right side of the top of the platform (1) via a support rod.

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