Dual-purpose static rigidity free transmission thrust loading device

Abstract

The application relates to a dual-purpose static rigidity free transmission thrust loading device, which comprises a hollow annular base of a bearing base, a high-pressure turbine stop and a connecting hole, a base pressing block, a high-vortex rotor front mounting edge and the bearing base are connected and circumferentially pressed by a pressing bolt, a middle bearing block and a free bearing concave block are connected by a middle bearing bolt, a main bearing base connects the bearing base and the middle bearing block, the axial fixed thrust is converted into spherical contact free thrust transmission by the free bearing concave block, the free bearing concave block is in contact with a free thrust block, the upper part of a bearing upper cover is matched with a force applying wrench or a jack to apply force, the lower part of the bearing upper cover is matched with a high-pressure turbine upper mounting edge stop, an inner guide hole is transitionally matched with the free thrust block to serve as force applying guide centering, and the free thrust block is freely moved in the guide hole. The application realizes automatic positioning and centering effects of thrust transmission through design of an arc surface loading force transmission mechanism, and realizes double-mode switching of automatic and manual loading through design of a dual-purpose static structure.

Description

Technical Field

[0001] This invention relates to the field of aero-engine rotor tensile thrust loading technology, specifically to a dual-purpose static rigid free-transfer thrust loading device. Background Technology

[0002] Aero-engine core rotors typically employ a short-stop interference fit structure, secured with bolts after the stop assembly. However, the rigidity of the bolted connections, circumferential consistency, and the uniformity of stress on the rotor after connection are difficult to detect and control. When the rotor is cold and stationary after assembly, the clamping force and connecting bolts result in a stable, ideal state. During operation, however, the rotor is subjected to tensile forces, placing it under tension. The short-stop interference fit and the uniformity of the circumferential bolt connections can cause the rotor to deviate from this ideal state, leading to tilting or even bending. Therefore, based on the difference between the rotor's static and operational states, an axial push-pull loading method is proposed to apply force to the rotor, simulating the stress on the rotor from its cold, stationary state to its operational push-pull state. After assembly, the uniformity of stress and the degree of tilting and bending under tensile force are monitored. Simultaneously, the effectiveness of the short-stop interference fit and bolt tightening is analyzed and evaluated based on the parameter measurements after loading. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a dual-purpose static rigid free-transfer thrust loading device; the specific technical solution is as follows:

[0004] A dual-purpose static rigid free-transfer thrust loading device, comprising a load-bearing base, a clamping bolt, a base pressure block, a middle load-bearing block, a middle load-bearing bolt, a lifting ring, a main load-bearing seat, a free load-bearing concave block, a free thrust block, a load-bearing top cover, a force-applying wrench or jack, and a force-applying rod.

[0005] The load-bearing base is a hollow ring base with outwardly extending mounting grooves at both ends and screw holes inside the mounting grooves. The lower end of the load-bearing base is provided with a mounting seat for connecting the equipment interface.

[0006] The mounting groove mates with the high-pressure turbine stop and the connecting hole, and the hollow load-bearing base provides support space for measuring the rotor state after force is applied.

[0007] The clamping bolts connect the base clamping block, the front mounting edge of the high-vortex rotor, and the mounting groove of the load-bearing base, and clamp them circumferentially, serving as the main force application point at the front end;

[0008] The lower end of the main bearing seat is set in the groove in the center of the bearing base and is fixed by bolts. The upper end of the main bearing seat is provided with a stop, and the middle bearing block is set in the stop of the main bearing seat. The main bearing seat serves as the main force transmission mechanism.

[0009] The free-bearing concave block is set inside the groove of the intermediate bearing block;

[0010] The central load-bearing block is a transition load-bearing mechanism. The central load-bearing block and the free load-bearing concave block are connected by a central load-bearing bolt, so that the thrust is converted from mechanical transmission to free adaptive transmission.

[0011] The load-bearing cover is divided into two parts. The upper part is cylindrical with internal threads, which can be used with a wrench or jack to apply force.

[0012] The lower part of the load-bearing upper cover is a circular flange. The outer flange edge matches the mounting edge stop on the high-pressure turbine as a force application point. Its free thrust block is set in the inner guide hole as a force application guide and centering. The free thrust block can move freely in the guide hole.

[0013] The free bearing concave block is in contact with the free thrust block;

[0014] The lifting ring is located on the side of the load-bearing cover and is used for lifting and installing the load-bearing cover.

[0015] The preferred embodiment of the dual-purpose static rigid free transmission thrust loading device is that the force wrench or jack is a dual-purpose force application mechanism, the force wrench is a manual mechanical rotary force application, and the jack is a hydraulic force application.

[0016] The force-applying lever is a manual mechanical rotary force-applying wrench;

[0017] A specified thrust is applied to the load-bearing top cover by a jack. The thrust is pushed by the jack to the free thrust block, which holds the free load-bearing concave block and the middle load-bearing block. The thrust is transmitted through the spherical transmission main load-bearing seat and the load-bearing base.

[0018] After measuring and testing the components, the jack was replaced with a torque wrench, and manual force was applied.

[0019] The preferred embodiment of the dual-purpose static rigid free-transfer thrust loading device is that the upper end of the free bearing concave block has an inner spherical structure and the lower end of the free thrust block has an outer spherical structure, with the outer spherical surface of the free thrust block engaging with the inner spherical surface of the free bearing concave block; thus converting axial fixed thrust transmission into ball contact free thrust transmission, and after being subjected to force, the thrust at both ends can be freely transmitted, avoiding internal force deviation caused by structural form and position tolerances.

[0020] The specific operating steps of a dual-purpose statically rigid free-transfer thrust loading device are as follows:

[0021] Step 1: Place the load-bearing base on the platform, install the main load-bearing seat 7 onto the load-bearing base, and use the stop for positioning during installation. Once installed in place, hoist the high-vortex rotor onto the stop of the load-bearing base mounting groove.

[0022] Step 2: Install the base block onto the front mounting edge of the high-pressure turbine, connect the base block with clamping bolts, and tighten them onto the load-bearing base 1. Install evenly around the circumference.

[0023] Step 3: Install the intermediate bearing block 4 into the upper stop of the main bearing seat;

[0024] Step 4: Install the free load-bearing recess into the middle load-bearing block. The recess has a positioning stop for connection. Secure it with the middle load-bearing bolts.

[0025] Step 5: Install the load-bearing top cover onto the side of the high-speed vortex rotor. After the stop is in place, tighten the connecting bolts and secure it.

[0026] Step 6: Install the free thrust block into the guide hole at the bottom of the load-bearing cover, with the outer spherical surface of the free thrust block freely pressing against the inner spherical surface of the free load-bearing concave block.

[0027] Step 7: Install the jack into the upper part of the load-bearing cover and turn it into place;

[0028] Step 8: After the connection is completed, apply thrust to jack 14 as required, and at the same time, detect and record the changes in the high-vortex rotor as required.

[0029] Step 9: After applying force, disassemble the jack and replace it with a torque wrench. Turn the torque wrench by moving the torque lever and check the high-pressure turbine change data to the same point as when the jack was used.

[0030] Step 10: Remove the force-applying rod and hoist the high-vortex rotor with the force-applying device as a whole onto the high-vortex measuring equipment to measure the parameters under the applied thrust.

[0031] Step 11: After measuring and disassembling the high-pressure vortex rotor and the force application device, unload the thrust and disassemble the force application device in reverse order according to the assembly steps, and then disassemble the high-pressure vortex rotor.

[0032] Step 12: Complete the circumferential force loading of the high-vortex rotor.

[0033] Beneficial effects:

[0034] The dedicated force application device of this invention uses a free thrust block for thrust transmission, reducing the influence of internal forces during force application. It employs a spherical contact free force application structure to replace rigid connection thrust transmission, reducing tilting problems caused by thrust transmission deviation. It is highly practical, accurately reflecting the deformation state of the high-vortex rotor under free force application after force application, and offers high operational efficiency. Furthermore, it is convenient and easy to operate. The adoption of this process equipment integrates the multi-mode thrust loading and rigid free thrust transmission devices into a single design, reducing the manufacturing costs of specialized tooling and non-standard equipment, shortening the assembly cycle, improving quality and efficiency, and saving engine production costs. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a dual-purpose static rigid free-transfer thrust loading device.

[0036] In the diagram, 1. Load-bearing base; 2. Clamping bolt; 3. Base pressure block; 4. Middle load-bearing block; 5. Middle load-bearing bolt; 6. Lifting ring; 7. Main load-bearing seat; 8. Free load-bearing recess; 9. Free thrust block; 10. Load-bearing top cover; 11. Force wrench; 12. Force rod; 13. High-speed vortex rotor; 14. Jack. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited by the drawings.

[0038] A dual-purpose static rigid free transmission thrust loading device, comprising a load-bearing base 1, a clamping bolt 2, a base pressure block 3, a middle load-bearing block 4, a middle load-bearing bolt 5, a lifting ring 6, a main load-bearing seat 7, a free load-bearing concave block 8, a free thrust block 9, a load-bearing upper cover 10, a force-applying wrench 11 or a jack 14, and a force-applying rod 12.

[0039] The load-bearing base 1 is a hollow ring base with outwardly extending mounting grooves at both ends and screw holes in the mounting grooves. The lower end of the load-bearing base 1 is provided with a mounting seat for connecting the equipment interface.

[0040] The mounting groove mates with the high-pressure turbine stop and the connecting hole, and the hollow load-bearing base 1 provides support space for measuring the rotor state after force is applied.

[0041] The clamping bolt 2 connects the base clamping block 3, the front mounting edge of the high-vortex rotor 13, and the mounting groove of the load-bearing base 1, and clamps them circumferentially, serving as the main force application point at the front end;

[0042] The lower end of the main bearing seat 7 is set in the groove in the center of the bearing base 1 and is fixed by bolts. The upper end of the main bearing seat 7 is provided with a stop, and the middle bearing block 4 is set in the stop of the main bearing seat 7. The main bearing seat 7 serves as the main force transmission mechanism.

[0043] The free load-bearing concave block 8 is set inside the groove of the intermediate load-bearing block 4;

[0044] The central bearing block 4 is a transfer bearing mechanism. The central bearing block 4 and the free bearing concave block 8 are connected by the central bearing bolt 5, so that the thrust is converted from mechanical transmission to free adaptive transmission.

[0045] The load-bearing cover 10 is divided into two parts. The upper part is cylindrical with internal threads, which can be used in conjunction with the force wrench 11 or the jack 14 to apply force.

[0046] The lower part of the load-bearing upper cover 10 is a circular flange. The outer flange edge matches the mounting edge stop on the high-pressure turbine as a force application point. Its free thrust block 9 is set in the inner guide hole as a force application guide and centering. The free thrust block 9 can move freely in the guide hole.

[0047] The free bearing concave block 8 is in contact with the free thrust block 9;

[0048] The lifting ring 6 is located on the side of the load-bearing cover 10 and is used for lifting and installing the load-bearing cover 10.

[0049] The force-applying wrench 11 or jack 14 is a dual-purpose force-applying mechanism. The force-applying wrench 11 is a manual mechanical rotary force-applying mechanism, and the jack 14 is a hydraulic force-applying mechanism.

[0050] The force-applying lever 12 is a manual mechanical rotary force-applying wrench;

[0051] The specified thrust is applied to the load-bearing top cover by jack 14. The thrust is pushed by jack 14 to push the free thrust block 9, which holds the free load-bearing concave block 8 and the middle load-bearing block 4. The thrust is transmitted through the spherical main load-bearing seat and the load-bearing base 1.

[0052] After measuring and testing the components, jack 14 was replaced with a force wrench, and manual force was applied.

[0053] The upper end of the free bearing concave block 8 is an inner spherical structure, and the lower end of the free thrust block 9 is an outer spherical structure. The outer spherical surface of the free thrust block 9 matches the inner spherical surface of the free bearing concave block 8. The axial fixed thrust transmission is converted into ball contact free thrust transmission. After being subjected to force, the thrust at both ends can be freely transmitted, avoiding the internal force deviation caused by structural form and position tolerances.

[0054] The specific operating steps of a dual-purpose statically rigid free-transfer thrust loading device are as follows:

[0055] Step 1: Place the load-bearing base on the platform, install the main load-bearing base 7 onto the load-bearing base 1, and use the stop for positioning during installation. Once installed in place, hoist the high-speed vortex rotor 13 onto the stop of the mounting groove of the load-bearing base 1.

[0056] Step 2: Install the base pressure block 3 onto the front mounting edge stop of the high-pressure turbine. Connect the base pressure block 3 with the clamping bolt 2 and tighten it onto the load-bearing base 1. Install evenly in the circumferential direction.

[0057] Step 3: Install the intermediate bearing block 4 into the upper stop of the main bearing seat;

[0058] Step 4: Install the free load-bearing recess 8 into the middle load-bearing block 4. The recess has a positioning stop connection. Connect and tighten it with the middle load-bearing bolt 5.

[0059] Step 5: Install the load-bearing top cover 10 to the side after the high-speed vortex rotor is installed. After the stop is in place, tighten the connecting bolts and secure it.

[0060] Step 6: Install the free thrust block 9 into the guide hole at the bottom of the load-bearing cover 10, with the outer spherical surface of the free thrust block 9 freely pressing against the inner spherical surface of the free load-bearing concave block 8.

[0061] Step 7: Install the jack 11 into the upper part of the load-bearing cover 10 and turn it into place;

[0062] Step 8: After the connection is completed, apply thrust to jack 14 as required, and at the same time, detect and record the changes in high-vortex rotor 13 as required.

[0063] Step 9: After applying force, disassemble jack 14 and replace it with force wrench 11. Turn the force wrench by moving the force lever 12 and check the high-pressure turbine change data to the same point as the data when jack 11 was used.

[0064] Step 10: Remove the force-applying rod 12 and hoist the high-vortex rotor 13, which applies thrust, along with the force-applying device, onto the high-vortex measuring equipment to measure parameters under the applied thrust state.

[0065] Step 11: After measuring and disassembling the high-vortex rotor and force application device, unload the thrust and disassemble the force application device in reverse order according to the assembly steps, and disassemble the high-vortex rotor 13.

[0066] Step 12: Complete the circumferential loading of the high-vortex rotor.

Claims

1. A dual-purpose static rigid free-transfer thrust loading device, characterized in that: Load-bearing base, clamping bolt, base pressure block, middle load-bearing block, middle load-bearing bolt, lifting eye, main load-bearing seat, free load-bearing recess, free thrust block, load-bearing top cover, force-applying wrench, jack and force-applying rod; The load-bearing base is a hollow ring base with outwardly extending mounting grooves at both ends and screw holes inside the mounting grooves. The lower end of the load-bearing base is provided with a mounting seat for connecting the equipment interface. The mounting groove mates with the high-pressure turbine stop and the connecting hole, and the hollow load-bearing base provides support space for measuring the rotor state after force is applied. The clamping bolts connect the base clamping block, the front mounting edge of the high-vortex rotor, and the mounting groove of the load-bearing base, and clamp them circumferentially, serving as the main force application point at the front end; The lower end of the main bearing seat is set in the groove in the center of the bearing base and is fixed by bolts. The upper end of the main bearing seat is set with a stop, and the middle bearing block is set in the stop of the main bearing seat. The main bearing seat serves as the main force transmission mechanism. The free-bearing concave block is set inside the groove of the intermediate bearing block; The central load-bearing block is a transition load-bearing mechanism. The central load-bearing block and the free load-bearing concave block are connected by a central load-bearing bolt, so that the thrust is converted from mechanical transmission to free adaptive transmission. The load-bearing cover is divided into two parts. The upper part is cylindrical with internal threads, which can be used with a wrench or jack to apply force. The lower part of the load-bearing upper cover is a circular flange. The outer flange edge matches the mounting edge stop on the high-pressure turbine as a force application point. Its free thrust block is set in the inner guide hole as a force application guide and centering. The free thrust block can move freely in the guide hole. The free bearing concave block is in contact with the free thrust block; The lifting ring is located on the side of the load-bearing cover and is used for lifting and installing the load-bearing cover.

2. The dual-purpose static rigid free-transfer thrust loading device according to claim 1, characterized in that: The wrench or jack is a dual-purpose force-applying mechanism; the wrench is a manual mechanical rotary force-applying mechanism, and the jack is a hydraulic force-applying mechanism. The force-applying lever is a manual mechanical rotary force-applying wrench; A specified thrust is applied to the load-bearing top cover by a jack. The thrust is pushed by the jack to the free thrust block, which holds the free load-bearing concave block. The thrust is transmitted through the spherical transmission to the main load-bearing seat and the load-bearing base. After measuring and testing the components, the jack was replaced with a torque wrench, and manual force was applied.

3. The dual-purpose static rigid free-transfer thrust loading device according to claim 1, characterized in that: The upper end of the free bearing concave block has an inner spherical structure, and the lower end of the free thrust block has an outer spherical structure. The outer spherical surface of the free thrust block matches the inner spherical surface of the free bearing concave block. The axial fixed thrust transmission is converted into ball contact free thrust transmission. After being subjected to force, the thrust at both ends can be freely transmitted, avoiding the internal force deviation caused by structural form and position tolerances.

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