Aeroengine Disk X-ray Residual Stress Testing Device

Abstract

The present invention discloses an X-ray residual stress testing device for an aero-engine disk component. The fixing device includes a first fixing device for the X-ray residual stress testing equipment and a second fixing device for the aero-engine disk component. The first fixing device mainly consists of a support unit, a lifting unit and a loading unit, and the second fixing device mainly consists of a support unit and a rotating unit. The design and implementation of the two sets of fixing devices in the present invention can realize the alternating testing of X-ray residual stress at different positions of the aero-engine disk component, improve the testing efficiency of X-ray residual stress, and better adapt to the changeable on-site environment and testing conditions in the workshop.

Description

Technical Field

[0001] The present invention belongs to the technical field of residual stress testing, and specifically relates to an X-ray residual stress testing device for aero-engine disks. Background Art

[0002] Due to process requirements at the workshop site, it is necessary to conduct on-site X-ray residual stress testing on some aero-engine disks. Usually, the size and weight of the disks are relatively large and the structure is complex. In order to alternately perform residual stress testing at different positions of the disks, it is often necessary to frequently move the positions of the stress equipment and the disks and adjust the testing during the testing process to adapt to the changing on-site environment and testing conditions. Although the testing work can be completed, it consumes a large amount of labor time and increases the safety risk of manual handling.

[0003] In order to improve the testing efficiency of X-ray residual stress of aero-engine disks and improve the working conditions of the testing work, an attempt is made to design a fixing device for X-ray residual stress testing of aero-engine disks. The device is mainly divided into an equipment area and a part area according to different functions. The equipment area can orderly place the functional parts of the stress testing equipment and realize the position adjustment and overall movement of the stress testing equipment, so that the testing equipment can adapt to different on-site conditions. The part area can perform overall positioning of the aero-engine disk parts and adjust the testing positions to facilitate the testing control of the parts. The design and implementation of the entire fixing device can effectively improve the working efficiency of X-ray residual stress testing of aero-engine disks at the workshop site, reduce the labor intensity and safety risk, and provide good technical support and economic benefits. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention aims to provide an X-ray residual stress testing device for aero-engine disks, which can improve the problems of more restrictions on testing conditions and lower working efficiency in the X-ray residual stress testing of aero-engine disks at the workshop site. On the one hand, it can realize the overall movement and position adjustment of the stress testing equipment, and on the other hand, it can perform overall positioning of the disk parts and adjust the testing positions, which can effectively improve the X-ray residual stress testing conditions of the disk parts and improve the testing work efficiency.

[0005] The present invention adopts the following technical solutions:

[0006] An X-ray residual stress testing device for aero-engine disks, comprising a first fixing device for X-ray residual stress testing equipment and a second fixing device for aero-engine disks, wherein:

[0007] The first fixing device includes,

[0008] The first base, a first moving wheel is provided at the lower end of the first base, and a support platform with adjustable height and a console with fixed height are simultaneously provided on the upper end surface of the first base;

[0009] A support frame for pushing the first fixing device, the support frame is connected to one end of the first base, and a hook is connected to the support frame above the console;

[0010] The second fixing device includes,

[0011] The second base, a second moving wheel is provided at the lower end of the second base, and multiple brackets are arranged along the circumferential direction of the second base;

[0012] A bearing seat and a brake pin, the bearing seat is fixed on the bracket, the brake pin is threadedly connected to the bracket, and one end of the brake pin is connected with a brake block;

[0013] A rotating disc, the rotating disc is rotatably connected to the bearing seat through a bearing, and its rotation axis is in the vertical direction.

[0014] On the one hand, the first fixing device can realize the standard placement and convenient transportation of the residual stress testing equipment, and at the same time can adjust the height position of the equipment probe during the testing process. On the other hand, the second fixing device can realize the position adjustment of the disc part. When specifically testing each position of the disc part, the two devices can be used in cooperation, and the equipment probe can be quickly positioned at a certain testing position of the disc part, effectively improving the detection efficiency.

[0015] As an option, the support platform is of a plate-like structure, the upper end surface of the support platform is the working surface, and a positioning clamp for the X-ray residual stress testing equipment is provided on the working surface. The shape of the positioning clamp is determined according to the support seat of the X-ray residual stress testing equipment, and the purpose is to fix the X-ray residual stress testing equipment placed on the working surface.

[0016] As an option, the support platform is connected to the upper end surface of the first base with adjustable height through a movable bracket and a rotating rod, wherein,

[0017] The movable bracket includes a first rod fixed on the upper end surface of the first base, a second rod fixed on the lower end surface of the support platform, a third rod and a fourth rod. A first chute is opened on the first rod, a second chute is opened on the second rod. The left end of the third rod is hinged to the second rod, the midpoint position of the third rod is hinged to the midpoint position of the fourth rod, the right end of the third rod is hinged to a first slider, and the first slider is slidably connected in the first chute. The left end of the fourth rod is hinged to the first rod, and the right end is hinged to a second slider, and the second slider is slidably connected in the second chute;

[0018] A rotating rod, which is connected to the upper end surface of the first base through a bearing and a bearing seat. A threaded sleeve is threadedly connected to the rotating rod, and the threaded sleeve is connected to the second slider.

[0019] As an option, one of the first rod, one of the second rod, one of the third rod, and one of the fourth rod form a lifting unit. The movable bracket includes two parallel lifting units, and the two lifting units are connected by a fifth rod. The two ends of the fifth rod are respectively connected to the hinge points of the third rod and the fourth rod in the lifting unit.

[0020] As an option, both the first moving wheel and the second braking wheel are provided with a braking structure.

[0021] As an option, the rotating disc includes a dial and a circular shaft. The rotating disc is rotatably connected to the bearing in the bearing seat through the circular shaft, and the dial is detachably connected to the upper end of the circular shaft through a movable pin shaft.

[0022] It should be noted that the reason for designing two sets of fixing devices in the present invention, namely one set of the first fixing device for the X-ray residual stress testing equipment and one set of the second fixing device for the aero-engine disk parts, is mainly to consider the convenience and practicality of the disk part X-ray residual stress testing. In the traditional measurement method, when testing the residual stress of a disk part, the disk part is directly transported to the residual stress test laboratory. However, the size and weight of the disk part are large, the transportation process is troublesome, and there are also great safety hazards in frequent handling of the disk part. In order to reduce the handling of the disk part and save time and effort, a new idea is to measure the residual stress of the disk part on-site. However, if you want to measure the residual stress on-site, you must move the stress testing equipment to the site. Since the stress testing equipment has many components, it is necessary to design a special device for its standardized placement and transportation. On the one hand, the first fixing device should fix the residual stress testing equipment and ensure the horizontal testing requirements, and on the other hand, it should also be able to realize the lifting function, so that the testing probe of the residual stress testing equipment can be adjusted in height to meet the needs of different testing positions of the disk part. The use of the second fixing device is mainly to provide a support platform for the disk part and at the same time facilitate the position adjustment of the disk part. Because multiple positions need to be measured when testing the disk part, without a suitable fixing device, relying only on conventional handling and moving methods will not only result in a large amount of labor but also easily damage the surface of the disk part. One of the innovations of the present invention is to use these two fixing devices in combination to adjust the residual stress testing of the disk part to be carried out on-site. The present invention not only improves the transportation convenience of the residual stress testing equipment and the testing efficiency of the disk part, etc., but also reduces the labor intensity and safety risks.

[0023] At present, there are few reports on special fixing devices for X-ray residual stress testing of aero-engine disks. Generally, the disks are directly transported to the laboratory, and in engineering applications, most of them adopt a flexible patchwork method to temporarily build a fixing device. Although the stress testing can be completed, the work efficiency is not high, it is easily affected by on-site conditions, and it is difficult to accurately solidify the process requirements. The fixing device for X-ray residual stress testing of aero-engine disks designed by the present invention can effectively improve the on-site testing conditions in the workshop, improve the work efficiency, ensure the process implementation, and even can be promoted and studied as a relevant testing specification in engineering applications. Brief Description of the Drawings

[0024] Figure 1 Schematic diagram of the first fixing device for the X-ray residual stress testing equipment in the present invention;

[0025] Figure 2 is Figure 1 Schematic diagram in the M direction in

[0026] Figure 3 Schematic diagram of the second fixing device for aero-engine disks in the present invention;

[0027] In the figure, 1 - first base; 2 - support frame; 3 - first moving wheel; 4 - support table; 5 - movable bracket; 6 - rotating rod; 7 - console; 8 - hook; 9 - second base; 10 - bracket; 11 - second moving wheel; 12 - rotating disk; 13 - bearing seat; 14 - brake pin. Detailed Embodiment

[0028] The present invention will be further described below in conjunction with the drawings and specific embodiments. However, it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, all modifications, substitutions, and changes made according to ordinary technical knowledge and customary means in the art are included in the scope of the present invention.

[0029] In order to solve the problem of X-ray residual stress testing of aero-engine disks, the basic idea of the present invention is: to design a fixing device dedicated to X-ray residual stress testing of aero-engine disks, which is mainly divided into an equipment fixing device (the first fixing device) and a part (disk) fixing device (the second fixing device) according to different functions.

[0030] The equipment fixing device can orderly place the functional components of the X-ray residual stress testing equipment, and realize the position adjustment and overall movement of the residual stress testing equipment. It mainly includes a support unit, a lifting unit, a load-carrying unit, etc. Among them, the support unit, as the load-bearing component of the device, ensures the structural integrity and coordinated operation of each functional component, and can control the movement of the entire device, which is beneficial to the transportation of the residual stress testing equipment in different places; the lifting unit is mainly used to place the main components of the residual stress testing equipment, and realize the up and down position adjustment of the main components of the residual stress testing equipment to meet the position change requirements of the main testing probe; the load-carrying unit is mainly used to place the controller of the residual stress testing equipment to facilitate the equipment control during the testing process.

[0031] The fixing device for parts (disk parts) can position and adjust the disk parts to facilitate the real-time control of the testing position. It mainly includes a support unit and a rotating unit. Among them, the support unit, as the load-bearing component of the device, ensures the structural integrity and coordinated operation of each functional component, and can control the movement of the entire device, which is beneficial to the transportation of the disk parts to be tested in different places; the rotating unit is mainly used to place the disk parts to be tested and realize the circumferential position adjustment of the disk parts to meet the testing position change requirements.

[0032] The design concept of using two fixing devices in combination can quickly position the equipment probe to a certain testing position of the disk part, effectively improving the detection efficiency. It realizes the alternating X-ray residual stress testing at different positions of the aero-engine disk part, improves the testing efficiency of X-ray residual stress, and can better adapt to the changing on-site environment and testing conditions in the workshop.

[0033] As Figures 1 to 3 shown, it is the fixing device for X-ray residual stress testing of aero-engine disk parts of the present invention.

[0034] Before the testing work starts, place the equipment fixing device on the horizontal ground so that the device is within the reach of the disk part stress testing. At the same time, the stability of the support unit must be ensured. The support unit mainly consists of a first base 1, a support frame 2 and a first moving wheel 3. Among them, the first base 1 is a rigid structure of a square fixed bracket to ensure the horizontal and load-bearing requirements of the entire device. The support frame 2 is fixedly connected to one end of the first base 1 to assist in manually pushing the device to move. A first moving wheel 3 that can rotate omnidirectionally is designed under the bracket, and a braking structure is attached to it to realize the real-time movement and braking requirements of the device.

[0035] The main components of the residual stress testing equipment can be fixedly placed through the lifting unit, which can effectively prevent the equipment from shaking during transportation and testing, and can realize the up and down position adjustment of the main components of the equipment. The lifting unit mainly consists of a support table 4, a movable bracket 5, and a rotating rod 6. The support table 4 is a plate-like structure, and its working surface is used to place the main components of the stress testing equipment. The main components can be tightly positioned through the positioning clamps on the working surface to prevent shaking during testing. The movable bracket 5 is an independent moving mechanism connected by many rods, which can drive the support table 4 to move in the up and down directions. Part of the rods ( Figure 1 the third rod and the fourth rod that cross in an X shape in it) are connected by movable bolts, enabling relative rotation between the rods. Part of the rods ( Figure 1 the first rod connected to the first base 9, the second rod connected to the support table 2, and the fifth rod arranged between the hinge points of the third rod and the fourth rod) are connected by fixed bolts, making the rods rigidly fixed to achieve overall movement. Sliders and open slots are designed on part of the rods (the first rod and the second rod), and a sliding connection mechanism is formed by using the sliders and open slots, and the up and down movement between the rods is realized through the sliding form. The rotating rod 6 is an independent branch rod structure. The two ends of the branch rod are fitted with bearings on the first base 1. Part of the rod body is in the shape of a lead screw. A special bushing is designed to be screwed into the lead screw in a threaded manner. At the same time, the bushing is fixedly connected to the slider on the movable bracket 5. The axial movement of the bushing is realized by rotating the lead screw, thereby driving the slider to move.

[0036] The controller and cables of the stress testing equipment can be placed in a standardized manner through the load-carrying unit, which increases the convenience of using the device. The load-carrying unit mainly consists of a control console 7 and a hook 8. The control console 7 is a horizontal plate-like structure, and its working surface is mainly used to place the controller of the stress testing equipment. The hook 8 is fixedly connected to the support frame 2 to bundle the relevant cables of the testing equipment.

[0037] According to the requirements of residual stress testing, when performing X-ray residual stress testing on the disk part at different positions, the positioning and placement as well as position adjustment of the disk part can be carried out through the part fixing device. The part fixing device includes a support unit and a rotating unit. The support unit mainly consists of a second base 9, a bracket 10 and second moving wheels 11. Among them, the second base 9 is a rigid structure of a square fixed bracket to ensure the horizontal and load-bearing requirements of the whole device. The brackets 10 are circumferentially distributed along the base. There is a supporting surface above the bracket 10, and a reinforcing beam is attached in the middle of the bracket 10 to enhance the rigid fixation of the structure. Second moving wheels 11 that can rotate omnidirectionally are designed under the second base 9, and a braking structure is attached to them, which can meet the requirements of real-time movement and braking of the device. The rotating unit mainly consists of a rotating disk 12, a bearing seat 13 and a braking pin 14. Among them, the rotating disk 12 is an integral assembly with a dial and a round shaft. The dial is used to place the disk part to be tested. It is composed of a series of plate surfaces with different diameters, and the dial specifications can be selected according to the actual size of the disk part (because the disk parts to be tested usually have different diameters, the appropriate plate surface can be selected according to the diameter of the disk part, and only one diameter of the plate surface needs to be installed for each test). The plate surfaces are fixedly connected through movable pin shafts (it means that the plate surfaces with different diameters are fixedly connected through movable pins. Whether it is between the plate surfaces or between the plate surface and the round shaft, they are fixedly connected by the same movable pin at the same time). The round shaft is fixedly assembled with the bracket 10 through the bearing seat 13 to realize the circumferential rotation of the whole rotating disk 12, so as to drive the circumferential position adjustment of the disk part. The braking pin 14 is a stud structure installed on the supporting surface of the bracket 10. A braking block is fixedly connected above the stud. By screwing the stud, the braking block is driven to move up and down. When the braking block moves to be in rigid contact and presses against the rotating disk 12, the braking of the rotating disk 12 can be realized.

[0038] When using the device of the present invention, the test is carried out on-site where the disk part is stored, including the rotation of the disk part and the height adjustment of the X-ray residual stress testing equipment, so as to determine the appropriate test position, and then the test is carried out.

[0039] The content not described in detail in the specification of the present invention belongs to the prior art well-known to those skilled in the art. Although the illustrative specific embodiments of the present invention are described above to facilitate the understanding of the present invention by those skilled in the art, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art in this technical field, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are within the scope of protection.

Claims

1. An X-ray residual stress testing device for an aeroengine disk part, characterized in that: It includes a first fixing device for an X-ray residual stress testing device and a second fixing device for an aeroengine disk part, where: The first fixing device includes a first base (1), a first moving wheel (3) is provided at the lower end of the first base (1), and a support platform (4) with adjustable height and a console (7) with fixed height are simultaneously provided on the upper end surface of the first base (1); a support frame (2) for pushing the first fixing device, the support frame (2) is connected to one end of the first base (1), and a hook (8) is connected to the support frame (2) and above the console (7); The second fixing device includes a second base (9), a second moving wheel (11) is provided at the lower end of the second base (9), and multiple brackets (10) are arranged along the circumferential direction of the second base (9); a bearing seat (13) and a brake pin (14), the bearing seat (13) is fixed on the bracket (10), the brake pin (14) is threadedly connected to the bracket (10), and one end of the brake pin (14) is connected with a brake block; a rotating disk (12), the rotating disk (12) is rotatably connected to the bearing seat (13) through a bearing, and its rotation axis is in the vertical direction; The support platform (4) is of a plate-like structure, the upper end surface of the support platform (4) is a working surface, and a positioning clamp for the X-ray residual stress testing device is provided on the working surface; The rotating disk (12) includes a dial and a round shaft, the dial is used for placing the disk part to be tested, the rotating disk (12) is rotatably connected in the bearing of the bearing seat (13) through the round shaft, and the dial is detachably connected to the upper end of the round shaft through a movable pin shaft.

2. The X-ray residual stress testing device for an aeroengine disk part according to claim 1, wherein: The support platform (4) is connected to the upper end surface of the first base (1) with adjustable height through a movable bracket (5) and a rotating rod (6), where the movable bracket (5) includes a first rod fixed on the upper end surface of the first base (1), a second rod fixed on the lower end surface of the support platform (4), a third rod and a fourth rod, a first chute is opened on the first rod, a second chute is opened on the second rod, the left end of the third rod is hinged to the second rod, the midpoint position of the third rod is hinged to the midpoint position of the fourth rod, the right end of the third rod is hinged to a first slider, and the first slider is slidably connected in the first chute, the left end of the fourth rod is hinged to the first rod, and the right end is hinged to a second slider, and the second slider is slidably connected in the second chute; a rotating rod (6), the rotating rod (6) is connected to the upper end surface of the first base (1) through a bearing and a bearing seat, a threaded sleeve is threadedly connected to the rotating rod (6), and the threaded sleeve is connected to the second slider.

3. The X-ray residual stress testing device for the aeroengine disk part according to claim 2, wherein: One first rod, one second rod, one third rod and one fourth rod form a lifting unit, the movable bracket (5) includes two lifting units arranged in parallel, and the two lifting units are connected through a fifth rod, and both ends of the fifth rod are respectively connected to the hinge points of the third rod and the fourth rod in the lifting unit.

4. The X-ray residual stress testing device for the aero-engine disk part according to claim 1, characterized in that: The first moving wheel (3) and the second moving wheel (11) are both provided with a braking structure.

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