A warming oven mounting rack

Abstract

The present application belongs to the field of high-temperature vibration fatigue test of turbine blades of an aero-engine, and discloses a heating furnace mounting rack, which comprises a frame and a driving structure, the frame is used for fixing the driving structure and mounting the heating furnace, and the driving structure is used for adjusting the position of the heating furnace. The heating furnace mounting rack is composed of several beams with different lengths by welding, the internal space is not blocked, and the processing and manufacturing are simple. Two upright columns are arranged on the frame structure as pulley support columns, two upright columns are arranged on the frame structure as guide columns, and the design of the guide rail, the linear bearing, two groups of pulleys and two steel wires is matched, so that the heating furnace is separated from the motor, the speed reduction device and the like, the space for the upward and downward movement of the heating furnace is emptied, and the upward and downward movement of the heating furnace is facilitated. In the use process of the heating furnace mounting rack, the movement is convenient and rapid, the upward and downward adjustment of the heating furnace is smooth, and the movement is stable.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of high-temperature vibration fatigue test of turbine blades of an aero-engine, and particularly relates to a heating furnace mounting rack. BACKGROUND

[0002] High-temperature high-cycle fatigue test of turbine blades is to examine the fatigue strength of turbine blades under high-temperature conditions. The working temperature of turbine blades of an aero-engine is as high as several hundred degrees Celsius or even thousands of degrees Celsius. The vibration fatigue test result under normal temperature conditions is quite different from the test result under high-temperature conditions. Therefore, vibration fatigue test of turbine blades under high-temperature conditions is needed. During the whole test process, the environmental temperature of turbine blades should be controllable and have small fluctuation, and the heat in the heating furnace should be prevented from spreading outward.

[0003] At present, the high-temperature high-cycle fatigue test device for high-temperature high-cycle test of turbine blades mainly has two heating modes of turbine blades. One is to place the turbine blades in a heating furnace, control the temperature in the furnace cavity to reach the required temperature for test, and then perform vibration fatigue test of the turbine blades. The temperature in the furnace cavity is kept stable during the test process. The second mode is to use electromagnetic induction heating. It is difficult to form a uniform temperature field by using electromagnetic induction heating. The temperature on the surface of the blade is higher than that in the interior of the blade. For different test pieces, the coil needs to be wound according to the structure and size of the test piece, and the commonality is poor. The coil is usually exposed and has no protection measures, which can cause electromagnetic radiation injury to the human body.

[0004] At present, due to the high temperature of high-temperature vibration fatigue test, when the turbine blades are heated by using a heating furnace, the turbine blades are usually installed on a horizontal sliding table. The horizontal sliding table is pushed by a vibration table, so that the blade vibrates in the horizontal direction. In this way, the heating furnace can be far away from the table surface of the vibration table, and the vibration table can be protected from high-temperature damage. However, this mode increases the test load and severely restricts the test frequency (generally lower than 2000 Hz), which leads to the fact that some turbine blades (the first-order bending frequency is greater than 2000 Hz) cannot be subjected to high-temperature vibration fatigue test.

[0005] According to the characteristics of horizontal vibration and vertical vibration of the vibration table, the structure of the horizontal sliding table is quite different from that of the vibration table. The mounting rack for the heating furnace of the horizontal sliding table is not suitable for the vibration table with vertical vibration. The structure size, heating furnace layout, safety measures, adjusting device and the like of the mounting rack are different. Therefore, it is necessary to design a heating furnace mounting rack suitable for the characteristics of vertical vibration of the vibration table and convenient for adjusting the horizontal and vertical positions of the heating furnace. SUMMARY

[0006] In order to overcome the defects of the prior art, the warming furnace mounting rack can not only support and fix the warming furnace, but also electrically adjust the warming furnace to move to the top of the vibration table, wrap the turbine blade in the warming furnace cavity, and ensure the stable up-down movement of the warming furnace.

[0007] To achieve the above object, the present application provides the following technical scheme:

[0008] A warming furnace mounting rack, comprising a frame and a driving structure,

[0009] The frame is used for fixing the driving structure and mounting the warming furnace;

[0010] The driving structure is used for adjusting the position of the warming furnace.

[0011] Further, the frame comprises two cross beams, four vertical beams, four top support beams and two bottom support beams.

[0012] The two ends of the two cross beams are respectively fixedly connected with the first ends of the four vertical beams, one horizontal bottom support beam is fixedly connected in each of two pairs of adjacent vertical beams, the two cross beams are fixedly connected through the four top support beams, the four top support beams are perpendicular to the two cross beams, and the four top support beams and the two bottom support beams are parallel to each other.

[0013] Further, the second ends of the four vertical beams are each provided with a roller through a roller mounting seat.

[0014] Further, two parallel support rods are fixedly connected between the middle two of the four top support beams, and the two support rods are perpendicular to the top support beams.

[0015] A pulley support column is vertically installed in the middle of each of the two support rods, and a pulley is installed on the top of the two pulley support columns through a first pulley mounting seat.

[0016] Further, two guide columns are vertically installed in the middle of the middle two top support beams, and rails are fixedly connected to opposite sides of the two guide columns, linear bearings are installed on the two rails, right-angle connecting pieces are fixedly connected to the bottoms of the two linear bearings, and the right-angle connecting pieces are used for fixedly connecting the warming furnace and the linear bearings.

[0017] Further, limit plates are horizontally fixedly connected to the connection positions of the middle two top support beams and the two guide columns.

[0018] Further, the driving device comprises a motor, a speed reducer, a lead screw and a bearing beam, the motor is fixedly connected to the middle side surface of the bottom support beam through a motor mounting seat 2, the speed reducer is fixedly connected to the middle side surface of the bottom support beam through a speed reducer mounting seat, and the motor and the speed reducer are adjacent and transmissionally connected.

[0019] Further, the speed reducer is connected with a lead screw in a vertical direction, the other end of the lead screw is fixedly connected with a load bearing beam, and the lead screw is perpendicular to the load bearing beam and located at the middle of the load bearing beam.

[0020] Further, a second pulley mounting seat is arranged above each end of the load bearing beam, and two second pulley mounting seats are fitted with pulleys, and the second pulley mounting seat is fixedly connected with the side surface of the top support beam.

[0021] A third pulley mounting seat is arranged between the two pairs of second pulley mounting seats and the first pulley mounting seat, the third pulley mounting seat is fixedly connected with the support rod, and the third pulley mounting seat is fitted with a pulley.

[0022] Two steel wires are fixedly connected with the two ends of the load bearing beam, and the two steel wires are sequentially threaded through the pulleys of the second pulley mounting seat, the third pulley mounting seat and the first pulley mounting seat and fixedly connected with the two sides of the heating furnace.

[0023] Further, a load bearing plate is arranged at the connection between the heating furnace and the two steel wires, and the load bearing plate is used for fixedly connecting the steel wires.

[0024] The technical effects and advantages of the present application are as follows:

[0025] The heating furnace mounting rack of the present application is composed of several beams of different lengths, and the internal space is not blocked, and the processing and manufacturing are simple;

[0026] The present application sets two vertical columns as pulley support columns on the frame structure, cooperates with the design of two groups of pulleys and two steel wires, and realizes the separation of the heating furnace from the motor, the speed reducer and the like, vacates the space for the upward and downward movement of the heating furnace, and realizes the purpose of the upward and downward movement of the heating furnace, and the upward and downward movement of the heating furnace is realized by applying force on one side of the mounting rack, and the design of two groups of pulleys and two steel wires ensures that the two ends of the heating furnace are stressed at the same time, and the uneven stress of the heating furnace is prevented.

[0027] The present application sets two vertical columns as guide columns on the frame structure, cooperates with the guide rail and the linear bearing, so that the heating furnace can only move upward and downward along the guide columns, uses the right-angle connecting piece and the load bearing plate to limit the front and rear and left and right deviation of the heating furnace, prevents the heating furnace from shaking during movement, and enables the heating furnace to move stably.

[0028] The present application sets a limiting structure to prevent the heating furnace from colliding with the vibration table and damaging the vibration table.

[0029] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0030] Figure 1 This is a front view of the heating furnace mounting bracket.

[0031] Figure 2 for Figure 1 The view along direction A in the middle;

[0032] Figure 3 for Figure 1 The view along direction B.

[0033] In the diagram, 1. Lead screw; 2. Motor mounting base; 3. Reducer mounting base; 4. Motor; 5. Support beam; 6. Steel wire rope; 7. Second pulley mounting base; 8. Pulley; 9. Guide column; 10. Track; 11. Linear bearing; 12. Right-angle connector; 13. Support plate; 14. Heating furnace; 15. First pulley mounting base; 16. Limiting plate; 17. Pulley support column; 18. Horizontal beam; 19. Vertical beam; 20. Roller; 21. Roller mounting base; 22. Third pulley mounting base; 23. Top support beam; 24. Support rod; 25. Reducer; 26. Bottom support beam. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 3 As shown, the present invention provides a heating furnace mounting bracket, including a frame and a drive structure. The frame is used to fix the drive structure and mount the heating furnace 14, and the drive structure is used to adjust the position of the heating furnace 14.

[0036] The frame includes two horizontal beams 18, four vertical beams 19, four top support beams 23, and two bottom support beams 26. The two ends of the two horizontal beams 18 are fixedly connected to the first ends of the four vertical beams 19 respectively. Each pair of two adjacent vertical beams 19 is fixedly connected to a horizontally arranged bottom support beam 26 in the middle. The two horizontal beams 18 are fixedly connected to each other by the four top support beams 23. The four top support beams 23 are perpendicular to the two horizontal beams 18, and the four top support beams 23 are parallel to the two bottom support beams 26.

[0037] Further, the second ends of the four vertical beams 19 are each provided with a roller 20 through a roller mounting seat 21.

[0038] Further, the middle two of the four top support beams 23 are fixedly connected with two parallel support rods 24, which are perpendicular to the top support beams 23; the middle portions of the two support rods 24 are each vertically provided with a pulley support column 17, and the top portions of the two pulley support columns 17 are provided with a pulley 8 through a first pulley mounting seat 15.

[0039] Further, the middle portions of the middle two of the four top support beams 23 are each vertically provided with a guide column 9, and the opposite sides of the two guide columns are each fixedly connected with a track 10, and the two tracks 10 are each provided with a linear bearing 11, and the bottom portions of the two linear bearings 11 are each fixedly connected with a right-angle connecting piece 12, which is used to fixedly connect the heating furnace 14 and the linear bearing 11.

[0040] Further, the connection portions of the middle two of the four top support beams 23 and the two guide columns 9 are each fixedly connected with a limiting plate 16, which is used to prevent the heating furnace 14 from colliding with the vibration table due to excessive descent.

[0041] Further, the driving device includes a motor 4 and a speed reducer 25, the motor 4 is fixedly connected to the middle side of a bottom support beam 26 through a motor mounting seat 2, the speed reducer 25 is fixedly connected to the middle side of the bottom support beam 26 through a speed reducer mounting seat 3, and the motor 4 is adjacent to the speed reducer 25 and in transmission connection.

[0042] Further, the speed reducer 25 is connected with a lead screw 1 in the vertical direction, and the other end of the lead screw 1 is fixedly connected with a load-bearing beam 5, and the lead screw 1 is perpendicular to the load-bearing beam 5 and located in the middle portion of the load-bearing beam 5.

[0043] Further, the top of the two ends of the load-bearing beam 5 is each provided with a second pulley mounting seat 7, and the two second pulley mounting seats 7 are provided with a pulley 8 in a matched manner, and the second pulley mounting seat 7 is fixedly connected with the side surface of the top support beam 23.

[0044] The two pairs of second pulley mounting seats and the first pulley mounting seat are each provided with a third pulley mounting seat 22, which is fixedly connected with the support rod 24, and the third pulley mounting seat 22 is provided with a pulley 8 in a matched manner.

[0045] The two ends of the load-bearing beam 5 are each fixedly connected with a steel wire rope 6, and the two steel wire ropes 6 are each in an M shape and sequentially pass through the pulleys 8 of the second pulley mounting seat 7, the third pulley mounting seat 22 and the first pulley mounting seat 15 and are fixedly connected with the two sides of the heating furnace 14.

[0046] Further, the connection between the heating furnace 14 and the two steel wires 6 is provided with a force bearing plate 13 for fixedly connecting the steel wires 6.

[0047] The working principle of the present application is as follows:

[0048] During the use of the heating furnace mounting rack, the heating furnace 14 is first fixedly connected with the linear bearing 11 through the right-angle connecting piece 12, wherein the heating furnace 14 and the right-angle connecting piece 12 can be connected through a nut and bolt, facilitating the dismounting and mounting of the heating furnace 14, then the heating furnace mounting rack is moved through the roller 20, so that the heating furnace mounting rack is placed above the vibration table, the horizontal position of the heating furnace mounting rack is slightly adjusted, so that the furnace cavity of the heating furnace 14 is opposite to the test piece on the table surface of the vibration table, the motor 4 is started, the motor 4 drives the speed reducer 25, the speed reducer 25 drives the lead screw 1 to rotate, the lead screw 1 drives the force bearing beam 5 to move up and down through rotation, the force bearing beam 5 drives the two steel wires 6 at both ends, the two steel wires 6 are fixedly connected in sequence through the M-shaped second pulley mounting seat 7, the third pulley mounting seat 22 and the pulley 8 of the first pulley mounting seat 15 and the force bearing plates 13 arranged at both sides of the heating furnace 14, and drive the heating furnace to slowly rise or fall along the vertical direction, until the test piece is completely placed in the furnace cavity of the heating furnace 14, the force bearing beam 5 is driven to move up and down through the motor 4, the speed reducer 25 and the lead screw 1, so that the heating furnace 14 at both ends is simultaneously stressed through the two steel wires 6 at both ends of the force bearing beam 5, preventing the heating furnace 14 from being deflected and the upward and downward movement from being blocked due to unbalanced stress, through the use of the six pulleys 8 and the two steel wires 6, the motor 4 and the speed reducer 25 can be installed on the outside of the frame, leaving space for the movement of the heating furnace, as well as the installation space of the test equipment above and the vibration table below, ensuring the passability of the heating furnace mounting rack, and facilitating the installation of the motor 4 and the speed reducer 25, meanwhile, the connecting parts between the two middle top support beams 23 and the two guide columns 9 are all fixedly connected with the limiting plates 16 in a horizontal manner, for preventing the heating furnace 14 from colliding with the vibration table due to excessive downward movement.

[0049] During the use of the heating furnace mounting rack of the present application, the movement is convenient and rapid, the upward and downward adjustment of the heating furnace 14 is smooth, and the movement is stable. The main frame structure of the heating furnace mounting rack is stable, and can effectively prevent the vibration of the vibration table from being transmitted to the heating furnace.

[0050] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make

[0051] Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application to the technical solutions described in the foregoing embodiments or to part of the technical features shall be included in the protection scope of the present application.

Claims

1. A heating furnace mounting bracket, characterized in that, Including the framework and driving structure, The frame is used to fix the drive structure and install the heating furnace (14). The drive structure is used to adjust the position of the heating furnace (14); The frame includes 2 horizontal beams (18), 4 vertical beams (19), 4 top support beams (23) and 2 bottom support beams (26). The two ends of the two horizontal beams (18) are fixedly connected to the first ends of the four vertical beams (19), and a horizontally arranged bottom support beam (26) is fixedly connected to the middle of each of the two pairs of adjacent vertical beams (19). The two horizontal beams (18) are fixedly connected to each other by four top support beams (23). The four top support beams (23) are perpendicular to the two horizontal beams (18), and the four top support beams (23) are parallel to the two bottom support beams (26). Two parallel support rods (24) are fixedly connected between the middle two top support beams (23) of the four top support beams (23), and the two support rods (24) are perpendicular to the top support beams (23); Each of the two support rods (24) has a pulley support column (17) vertically installed in the middle, and the top of the two pulley support columns (17) is fitted with a pulley (8) through the first pulley mounting seat (15). Two guide columns (9) are vertically installed in the middle of the two top support beams (23). The opposite sides of the two guide columns (9) are respectively fixedly connected to rails (10). Linear bearings (11) are installed on both rails (10). Right-angle connectors (12) are fixedly connected to the bottom of the two linear bearings (11). The right-angle connectors (12) are used to fix the heating furnace (14) and the linear bearings (11). The drive structure includes a motor (4), a reduction gear (25), a lead screw (1), and a load-bearing beam (5). The motor (4) is fixedly connected to the middle side of the bottom support beam (26) via a motor mounting seat (2). The reduction gear (25) is fixedly connected to the middle side of the bottom support beam (26) via a reduction gear mounting seat (3). The motor (4) is adjacent to the reduction gear (25) and is connected in transmission. The deceleration device (25) is connected to a lead screw (1) in the vertical direction. The other end of the lead screw (1) is fixedly connected to a load-bearing beam (5). The lead screw (1) is perpendicular to the load-bearing beam (5) and located in the middle of the load-bearing beam (5). A second pulley mounting seat (7) is provided directly above both ends of the load-bearing beam (5). The two second pulley mounting seats (7) are fitted with pulleys (8). The second pulley mounting seats (7) are fixedly connected to the side of the top support beam (23). A third pulley mounting seat (22) is provided between each pair of second pulley mounting seats and first pulley mounting seats. The third pulley mounting seat (22) is fixedly connected to the support rod (24). The third pulley mounting seat (22) is equipped with a pulley (8). The two ends of the load-bearing beam (5) are respectively fixedly connected with steel wire ropes (6). The two steel wire ropes (6) pass through the pulleys (8) of the second pulley mounting seat (7), the third pulley mounting seat (22) and the first pulley mounting seat (15) in an M shape and are fixedly connected to both sides of the heating furnace (14).

2. The heating furnace mounting bracket according to claim 1, characterized in that, The second ends of the four vertical beams (19) are each equipped with rollers (20) via roller mounting seats (21).

3. The heating furnace mounting bracket according to claim 1, characterized in that, Limiting plates (16) are horizontally fixedly connected at the connection points of the two middle top support beams (23) and the two guide columns (9).

4. A heating furnace mounting bracket according to claim 1, characterized in that, A load-bearing plate (13) is provided at the connection between the heating furnace (14) and the two steel wire ropes (6), and the load-bearing plate (13) is used to fix the steel wire ropes (6).

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