Vacuum annealing furnace for stress relief of titanium alloy air inlet channel body

Abstract

The utility model discloses a kind of titanium alloy air inlet passage body stress elimination's vacuum annealing furnace, it is related to aero-engine technical field, including furnace body and the furnace cover of being arranged at furnace body opening end side part, it is characterized in that, connecting lock is equipped between furnace cover and furnace body, the outer wall of furnace body is fixed with two symmetrically arranged fixed plate, rotating shaft is rotatably arranged between two fixed plates, rotating shaft is fixed in the side portion of furnace cover, the bottom of furnace body is equipped with connecting rod, the end of connecting rod is fixedly sleeved with connecting plate, discharging net is slidably connected in furnace body, connecting plate is fixedly connected with discharging net, connecting rod and furnace body are equipped with inlet and outlet mechanism for driving discharging net to move between them. The utility model can conveniently move into and move out annealing furnace for placing air inlet passage assembly discharging net transversely, reduce the use of remaining equipment, improve the use effect of vacuum annealing furnace.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine technology, specifically to a vacuum annealing furnace for stress relief of titanium alloy air intake body. Background Technology

[0002] Titanium alloy air intakes are an indispensable component of aero engines, and require effective processing in an annealing furnace during use. For example, patent document CN218811944U discloses a vacuum annealing furnace. In use, the air in the insulation chamber is preheated by the heating unit until it reaches a preset temperature. Then, the heating unit is turned off, and the blower is driven by the drive unit to rotate. The blower generates a spiral hot airflow in the insulation chamber, which fully dissipates heat to all parts of the insulation chamber, improving the heat treatment effect on the copper material.

[0003] However, existing vacuum annealing furnaces are vertically installed, and hoisting equipment is needed to place and remove them before and after annealing in the air inlet, which increases the cumbersomeness of using the annealing furnace and reduces its effectiveness. Utility Model Content

[0004] In view of the problems existing in the above-mentioned vacuum annealing furnace for stress relief of titanium alloy inlet duct body, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a vacuum annealing furnace for stress relief of titanium alloy air inlet body, which solves the problem that existing vacuum annealing furnaces cannot easily feed and remove workpieces when annealing air inlet.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A vacuum annealing furnace for stress relief of titanium alloy air inlet body includes a furnace body and a furnace cover located on the side of the open end of the furnace body. A connecting lock is provided between the furnace cover and the furnace body. Two symmetrically arranged fixing plates are fixedly provided on the outer wall of the furnace body. A rotating shaft is rotatably provided between the two fixing plates. The rotating shaft is fixed to the side of the furnace cover. The bottom of the furnace body is provided with a connecting rod, and a connecting plate is fixedly sleeved on the end of the connecting rod. A feeding net is slidably connected inside the furnace body. The connecting plate is fixedly connected to the feeding net. A feeding and discharging mechanism for driving the feeding net to move is provided between the connecting rod and the furnace body.

[0007] Preferably, the feeding and discharging mechanism includes two symmetrically arranged mounting plates, both of which are fixedly mounted on the bottom of the furnace body. A drive screw is rotatably driven between the two mounting plates, and the drive screw is threaded into the connecting rod, which is L-shaped.

[0008] Preferably, the bottom of the furnace body is fixedly provided with two symmetrically arranged support seats. A crossbar is rotatably passed through the lower end of the inner side of the support seat. A first bevel gear is fixedly sleeved at both ends of the crossbar. A second bevel gear and a third bevel gear are fixedly sleeved at the ends of the rotating shaft and the drive screw respectively. The first bevel gear, the second bevel gear, and the third bevel gear are configured to cooperate.

[0009] Preferably, both mounting plates have through holes at their upper interior ends, and the connecting rod is slidably disposed within the through holes.

[0010] Furthermore, an embedding groove is provided on the lower side of the opening of the furnace body, and the connecting plate is slidably disposed in the embedding groove, with its outer wall in contact with and fitting the inner wall of the embedding groove.

[0011] Preferably, the external threads on the rod wall of the drive screw are evenly distributed along the axial direction of the rod wall, and that is, the thread pitch is greater than a multiple of the width of the external thread crest.

[0012] Preferably, the tooth ratio of the first bevel gear to the third bevel gear is 1:4, and the tooth ratio of the first bevel gear to the second bevel gear is 1:2.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model, through the furnace body, support base, fixing plate, connecting rod, connecting plate, feeding net and feeding / discharging mechanism, enables the feeding net used to place the air inlet assembly to be easily moved laterally into and out of the annealing furnace, reducing the use of other equipment and improving the performance of the vacuum annealing furnace.

[0014] 2. This utility model, through the provided fixed plate, rotating shaft, furnace cover, feeding and discharging mechanism, crossbar and multiple bevel gears, can drive the feeding and discharging mechanism to work by opening and closing the furnace cover and furnace body, reducing manual operation and further improving the convenience of the air intake duct handling process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 3 This is a partial structural schematic diagram of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Furnace body; 2. Furnace cover; 3. Fixing plate; 4. Rotating shaft; 5. Connecting rod; 6. Connecting plate; 7. Feeding mesh; 8. Mounting plate; 9. Drive screw; 10. Connecting lock; 11. Support base; 12. Crossbar; 13. First bevel gear; 14. Second bevel gear; 15. Third bevel gear; 16. Embedding groove. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model discloses a vacuum annealing furnace for stress relief of titanium alloy air inlet body.

[0020] This utility model provides, for example Figure 1-3 The vacuum annealing furnace for stress relief of titanium alloy air inlet body shown includes a furnace body 1 and a furnace cover 2 provided on the side of the opening end of the furnace body 1. A connecting lock 10 is provided between the furnace cover 2 and the furnace body 1. Two symmetrically arranged fixing plates 3 are fixed on the outer wall of the furnace body 1. A rotating shaft 4 is rotatably provided between the two fixing plates 3. The rotating shaft 4 is fixed on the side of the furnace cover 2. A connecting rod 5 is provided at the bottom of the furnace body 1. A connecting plate 6 is fixedly sleeved at the end of the connecting rod 5. A feeding net 7 is slidably connected inside the furnace body 1. The connecting plate 6 is fixedly connected to the feeding net 7. A feeding and discharging mechanism for driving the feeding net 7 to move is provided between the connecting rod 5 and the furnace body 1. The feeding and discharging mechanism includes two symmetrically arranged mounting plates 8. Both mounting plates 8 are fixedly installed at the bottom of the furnace body 1. A driving screw 9 is rotatably passed between the two mounting plates 8. The external thread of the driving screw 9 is evenly distributed along the axial direction of the driving screw 9, and the thread pitch is greater than 4 times the width of the external thread crest. The thread of the driving screw 9 is located inside the connecting rod 5. The connecting rod 5 is L-shaped. A through hole is opened at the upper end of the interior of both mounting plates 8. The connecting rod 5 is slidably located in the through hole.

[0021] In order to enable the feeding and discharging mechanisms to operate by opening and closing the furnace cover and furnace body, thereby reducing manual operation, such as Figure 1-3As shown, two symmetrically arranged support seats 11 are fixedly provided at the bottom of the furnace body 1. A crossbar 12 is rotatably passed through the lower end of the support seat 11. A first bevel gear 13 is fixedly sleeved at both ends of the crossbar 12. A second bevel gear 14 and a third bevel gear 15 are fixedly sleeved at the ends of the rotating shaft 4 and the drive screw 9 respectively. The first bevel gear 13, the second bevel gear 14, and the third bevel gear 15 are configured to cooperate. An embedding groove 16 is provided on the lower side of the opening of the furnace body 1. The connecting plate 6 is slidably disposed in the embedding groove 16, and its outer wall is in contact with the inner wall of the embedding groove 16. The tooth ratio of the first bevel gear 13 to the third bevel gear 15 is 1:4, and the tooth ratio of the first bevel gear 13 to the second bevel gear 14 is 1:2.

[0022] Working principle: Before use, first open the connecting lock 10 between the furnace cover 2 and the furnace body 1, and manually flip the furnace cover 2 outward. The rotating shaft 4 fixed on the side of the furnace cover 2 rotates synchronously with the furnace cover 2. The two ends of the rotating shaft 4 rotate between the two fixed plates 3 on the outer wall of the furnace body 1 to provide stable support. Since the second bevel gear 14 is fixedly sleeved on one end of the rotating shaft 4 near the crossbar 12, and the second bevel gear 14 meshes with the first bevel gear 13 at one end of the crossbar 12, when the rotating shaft 4 rotates, it will drive the second bevel gear 14 to rotate, thereby driving the first bevel gear 13 and the crossbar 12 fixed therewith to rotate synchronously. The first bevel gear 13 at the other end of the crossbar 12 will rotate accordingly, and drive the third bevel gear 15 meshed therewith to rotate, so that the drive screw 9 rotates between the two mounting plates 8 at the bottom of the furnace body 1. The external threads on the drive screw 9 are evenly distributed axially, and the thread pitch is greater than four times the width of the external thread crest. This large-pitch thread design reduces thread meshing friction and ensures smooth driving. The tooth ratio of the first bevel gear 13 to the third bevel gear 15 is 1:4, and the tooth ratio of the first bevel gear 13 to the second bevel gear 14 is 1:2. This allows the drive screw 9 to rotate eight times while the shaft 4 rotates one revolution, thereby driving the connecting rod 5 to move rapidly and a large distance laterally. The drive screw 9 is threadedly engaged with the L-shaped connecting rod 5, while the connecting rod 5 slides through the mounting plate. Inside the upper part of the plate 8, the through hole guides and limits the connecting rod 5, preventing it from rotating synchronously with the drive screw 9. When the drive screw 9 rotates, the connecting rod 5 moves outward along the axis of the drive screw 9 under the action of thread transmission and through hole guidance. The connecting plate 6 fixedly sleeved at the end of the connecting rod 5 moves accordingly. The feeding net 7 fixed at the top of the connecting plate 6 extends outward synchronously from the furnace body 1. When the furnace cover 2 is opened from 0 degrees to 90 degrees, the end of the feeding net 7 can be partially moved out of the furnace body 1. When it is opened from 90 degrees to 180 degrees, the feeding net 7 can be completely moved out of the furnace body 1. At this point, the titanium alloy inlet duct body to be stress-relieved is placed on the feeding net 7. The furnace cover 2 is flipped in the opposite direction, and the furnace cover 2 drives the rotating shaft 4 to rotate in the opposite direction. Through the reverse transmission of the second bevel gear 14, the first bevel gear 13, the crossbar 12, and the third bevel gear 15, the drive screw 9 rotates in the opposite direction, thereby driving the connecting rod 5, the connecting plate 6, and the feeding net 7 to move into the furnace body 1. The connecting plate 6 slides into the embedding groove 16 on the lower side of the opening of the furnace body 1. The embedding groove 16 contacts and cooperates with the outer wall of the connecting plate 6 to ensure the sealing performance of the furnace body 1. After the feeding net 7 is completely moved into the furnace body 1, the furnace cover 2 is closed and locked by the connecting lock 10. The furnace body 1 can then perform vacuuming and annealing heating operations to relieve stress on the titanium alloy inlet duct body. After annealing, the above operation of opening the furnace cover 2 is repeated, and the feeding net 7 is moved out of the furnace body 1 again, making it easy to remove the treated titanium alloy inlet duct body. The entire process does not require additional lifting equipment, realizing convenient feeding and removal of the workpiece.

[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vacuum annealing furnace for stress relief of a titanium alloy inlet duct, comprising a furnace body (1) and a furnace cover (2) disposed on the side of the open end of the furnace body (1), characterized in that, A connecting lock (10) is provided between the furnace cover (2) and the furnace body (1). Two symmetrically arranged fixing plates (3) are fixed on the outer wall of the furnace body (1). A rotating shaft (4) is rotatably provided between the two fixing plates (3). The rotating shaft (4) is fixed on the side of the furnace cover (2). The bottom of the furnace body (1) is provided with a connecting rod (5), and the end of the connecting rod (5) is fixedly fitted with a connecting plate (6). A feeding net (7) is slidably connected inside the furnace body (1). The connecting plate (6) is fixedly connected to the feeding net (7). A feeding and discharging mechanism for driving the feeding net (7) to move is provided between the connecting rod (5) and the furnace body (1).

2. The vacuum annealing furnace for stress relief of titanium alloy inlet duct body according to claim 1, characterized in that, The feeding and discharging mechanism includes two symmetrically arranged mounting plates (8). Both mounting plates (8) are fixedly installed at the bottom of the furnace body (1). A drive screw (9) is rotatably inserted between the two mounting plates (8). The drive screw (9) is threaded into the connecting rod (5). The connecting rod (5) is L-shaped.

3. The vacuum annealing furnace for stress relief of titanium alloy inlet duct body according to claim 1, characterized in that, The bottom of the furnace body (1) is fixedly provided with two symmetrically arranged support seats (11). The lower end of the support seat (11) is rotatably provided with a crossbar (12). Both ends of the crossbar (12) are fixedly fitted with a first bevel gear (13). The shaft (4) and the drive screw (9) are respectively fixedly fitted with a second bevel gear (14) and a third bevel gear (15) at their respective ends. The first bevel gear (13), the second bevel gear (14), and the third bevel gear (15) are configured to cooperate.

4. The vacuum annealing furnace for stress relief of titanium alloy inlet duct body according to claim 2, characterized in that, Both mounting plates (8) have through holes at their upper interior ends, and the connecting rod (5) is slidably disposed within the through holes.

5. The vacuum annealing furnace for stress relief of titanium alloy inlet duct body according to claim 1, characterized in that, The furnace body (1) has an inlay groove (16) on the lower side of the opening. The connecting plate (6) is slidably disposed in the inlay groove (16), and its outer wall is in contact with the inner wall of the inlay groove (16).

6. The vacuum annealing furnace for stress relief of titanium alloy inlet duct body according to claim 2, characterized in that, The external threads of the drive screw (9) are evenly distributed along the axial direction of the drive screw (9) wall, and the thread pitch is greater than 4 times the width of the external thread crest.

7. The vacuum annealing furnace for stress relief of titanium alloy inlet duct body according to claim 3, characterized in that, The tooth ratio of the first bevel gear (13) and the third bevel gear (15) is 1:4, and the tooth ratio of the first bevel gear (13) and the second bevel gear (14) is 1:2.

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