Vertical clamp capable of simulating centrifugal force of engine blade and engine blade testing machine

Abstract

The utility model discloses a vertical clamp capable of simulating engine blade centrifugal force and an engine blade testing machine, the clamp comprises a rack, a clamping device, a rotating device and a lifting assembly, the clamping device comprises a clamping frame, an upper clamping part and a lower clamping part, the upper clamping part and the lower clamping part are used for clamping an engine blade, and the rotating device is used for rotating the engine blade. The rotating device is connected with the lower clamping part and is matched with the upper clamping part to drive the engine blade to rotate, the lifting assembly comprises a lifting driving part and a lifting part, the lifting driving part lifts the lifting part, and the upper clamping part applies pulling force to the engine blade to be tested and simulates the centrifugal force of the engine blade. When the vertical clamp works, the rotating device drives the lower clamping part to rotate and cooperates with the upper clamping part to drive the to-be-tested engine blade to rotate, the lifting driving part drives the lifting part to ascend, the upper clamping part applies pulling force to the engine blade, centrifugal force of the engine blade during high-speed rotation is simulated, the structure is compact, the test effect is good, and the test efficiency is high. And the accuracy of a test result is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation engine equipment, in particular to a vertical fixture capable of simulating the centrifugal force of engine blades and an engine blade testing machine. Background Art

[0002] At present, for aircraft engines, the exciting forces they are subjected to in actual operation can be divided into periodic, non-periodic and random excitations. Among them, the engine blades, as one of the important components in the aircraft engine, are subjected to multiple combined effects such as high temperature loads, centrifugal loads, air loads, etc. The force conditions are complex and the working environment is extremely harsh. Therefore, the processing requirements for engine blades are high. Therefore, after the engine blades are manufactured, they must undergo thermal tests to test their performance and durability.

[0003] The existing thermal test device includes a vertical clamping mechanism and a combustion chamber. The vertical clamping mechanism clamps the engine blade to be tested and then rotates it. The combustion chamber heats the clamped engine blade to simulate the thermal field environment of the engine blade. In the actual operation of the aircraft engine, the engine blade is not only subjected to high temperature loads, but also to centrifugal force. However, the existing thermal test device cannot perform centrifugal force simulation tests, which is bound to affect the test results. Utility Model Content

[0004] The utility model aims to provide a vertical fixture capable of simulating the centrifugal force of engine blades, so as to solve the problem that conventional thermal test devices in the prior art cannot perform centrifugal force simulation tests, resulting in inaccurate test results.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, a vertical fixture capable of simulating the centrifugal force of an engine blade is provided, which comprises a frame, a clamping device, a rotating device and a lifting assembly, wherein:

[0007] The clamping device comprises a clamping frame, an upper clamping part and a lower clamping part, the clamping frame is installed on the frame along the height direction, the upper clamping part can be rotatably installed at the top end of the clamping frame, the upper clamping part is configured to clamp the first end of the engine blade to be tested, the lower clamping part can be rotatably installed at the bottom end of the clamping frame, the lower clamping part is configured to clamp the second end of the engine blade to be tested, the driving end of the rotating device is connected to the lower clamping part, the rotating device drives the lower clamping part to rotate, so as to cooperate with the upper clamping part to drive the engine blade to be tested to rotate, the lifting assembly comprises a lifting drive member and a lifting member, the lifting member can be lifted and sleeved on the top end of the clamping frame, the driving end of the lifting drive member is connected to the first end of the lifting member, the second end of the lifting member is fixedly connected to the upper clamping part, and the lifting drive member is configured to drive the lifting member to rise and fall;

[0008] The lifting drive member drives the lifting member to rise, thereby causing the upper clamping portion to apply a pulling force to the engine blade to be tested, so as to simulate the centrifugal force of the engine blade when rotating at a high speed.

[0009] Furthermore, the lifting assembly also includes a detection component, which is fixedly arranged on the clamping frame, and the fixed end of the lifting drive member is connected to the detection component. The detection component is configured to detect the reaction force exerted on the fixed end of the lifting drive member when the lifting drive member drives the lifting member to rise.

[0010] Furthermore, the rotating device includes a rotating drive member and a transmission unit, the driving end of the rotating drive member is connected to the first end of the transmission unit, the second end of the transmission unit is connected to the lower clamping part, and the rotating drive member drives the transmission unit to rotate to drive the lower clamping part to rotate.

[0011] Furthermore, the transmission unit includes a first transmission wheel, a second transmission wheel and a transmission belt. The first transmission wheel is rotatably mounted on the driving end of the rotating drive member, the second transmission wheel is rotatably mounted on the bottom end of the lower clamping portion, and the transmission belt is rotatably sleeved on the first transmission wheel and the second transmission wheel. The rotating drive member drives the first transmission wheel to rotate, and drives the second transmission wheel to rotate through the transmission belt, thereby driving the lower clamping portion to rotate.

[0012] Furthermore, the lower clamping portion includes a lower clamping member and a lower rotating shaft, the lower rotating shaft is fixedly inserted through the middle of the lower clamping member, the lower clamping member is configured to clamp the second end of the engine blade to be tested, and the second transmission wheel is fixedly sleeved on the lower rotating shaft.

[0013] Furthermore, a waste collecting device is fixedly mounted on the upper end of the lower clamping portion, and the waste collecting device is configured to collect waste dropped by the engine blade to be tested during the test.

[0014] Furthermore, a height adjustment unit is provided at the bottom of the frame, and the height adjustment unit is configured to drive the frame to rise and fall so as to adjust the height of the engine blade to be tested.

[0015] Furthermore, the frame is provided with a first transverse movement unit and a second transverse movement unit, the first transverse movement unit includes a transverse movement module and a first transverse movement member, the transverse movement module is laid on the top of the frame along the first direction, the driving end of the transverse movement module is connected to the first transverse movement member through a slider, the transverse movement module is configured to drive the first transverse movement member to reciprocate along the first direction, the second transverse movement unit includes a second transverse movement member, the bottom surface of the second transverse movement member is symmetrically provided with sliding protrusions, corresponding to the sliding protrusions, a sliding groove is opened on the first transverse movement member, the sliding groove extends along the second direction, the clamping device is fixedly installed on the second transverse movement member, the second transverse movement member reciprocates along the second direction through the sliding cooperation between the sliding protrusion and the sliding groove to drive the clamping device to move, the first direction and the second direction are perpendicular.

[0016] In a second aspect, an engine blade testing machine is provided, which includes the above-mentioned vertical fixture capable of simulating the centrifugal force of the engine blade.

[0017] Compared with the prior art, the vertical clamp capable of simulating the centrifugal force of engine blades has the following beneficial effects: the rotating device drives the lower clamping part to rotate, and cooperates with the upper clamping part to drive the engine blade to be tested to rotate, and the lifting drive drives the lifting part to rise, so that the upper clamping part applies a pulling force to the engine blade to be tested to simulate the centrifugal force of the engine blade when rotating at high speed. The structure is compact, the test effect is good, and the accuracy of the test results is greatly improved; the detection component simulates the centrifugal force data of the engine blade through the reaction force of the lifting drive part, and the design is ingenious, which can accurately simulate the centrifugal force data, further improving the simulation accuracy; a waste collection device is added to collect the waste generated by the engine blade to be tested during the test to avoid waste splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present invention, the following briefly introduces the background technology of the present invention and the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a vertical fixture capable of simulating the centrifugal force of engine blades provided by an embodiment of the utility model;

[0020] Figure 2 It is another three-dimensional structural schematic diagram of a vertical fixture capable of simulating the centrifugal force of engine blades provided by an embodiment of the utility model;

[0021] Figure 3 It is a side view schematic diagram of a vertical fixture capable of simulating the centrifugal force of engine blades provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0023] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thoroughly understood. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on another component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to another component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 3As shown, in this embodiment, a vertical fixture capable of simulating the centrifugal force of an engine blade comprises a frame 1, a clamping device 2, a rotating device 3 and a lifting assembly 4, wherein the clamping device 2 comprises a clamping frame 20, an upper clamping portion 21 and a lower clamping portion 22, the clamping frame 20 is mounted on the frame 1 in a height direction, the upper clamping portion 21 is rotatably mounted on the top of the clamping frame 20, the upper clamping portion 21 is configured to clamp the first end of the engine blade to be tested, the lower clamping portion 22 is rotatably mounted on the bottom end of the clamping frame 20, the lower clamping portion 22 is configured to clamp the second end of the engine blade to be tested, and the driving end of the rotating device 3 is connected to the lower clamping portion 21. Part 22, the rotating device 3 drives the lower clamping part 22 to rotate, so as to cooperate with the upper clamping part 21 to drive the engine blade to be tested to rotate, the lifting assembly 4 includes a lifting drive member 40 and a lifting member 41, the lifting member 41 can be lifted and set on the top of the clamping frame 20, the driving end of the lifting drive member 40 is connected to the first end of the lifting member 41, and the second end of the lifting member 41 is fixedly connected to the upper clamping part 21, the lifting drive member 40 is configured to drive the lifting member 41 to move up and down, and the lifting drive member 40 drives the lifting member 41 to rise, so that the upper clamping part 21 applies a pulling force to the engine blade to be tested, so as to simulate the centrifugal force of the engine blade when rotating at high speed.

[0025] It can be seen that the rotating device 3 drives the lower clamping part 22 to rotate, and cooperates with the upper clamping part 21 to drive the engine blade to be tested to rotate, and the lifting drive part 40 drives the lifting part 41 to rise, so that the upper clamping part 21 applies a pulling force to the engine blade to be tested to simulate the centrifugal force of the engine blade when rotating at high speed. The structure is compact, the test effect is good, and the accuracy of the test results is greatly improved.

[0026] As an embodiment, the lifting assembly 4 also includes a detection component 42, which is fixedly arranged on the clamping frame 20, and the fixed end of the lifting drive member 40 is connected to the detection component. The detection component 42 is configured to detect the reaction force exerted on the fixed end of the lifting drive member 40 when the lifting drive member 40 drives the lifting member 41 to rise.

[0027] It can be seen that the detection component 42 simulates the centrifugal force data of the engine blades through the reaction force of the lifting drive component 40. The design is ingenious and can accurately simulate the centrifugal force data, further improving the simulation accuracy.

[0028] It should be noted that the detected reaction force is the centrifugal force of the engine blades when they rotate at high speed.

[0029] Of course, as another embodiment, the lifting drive component 40 adopts a driving cylinder, the detection component 42 is a pressure sensor, the driving cylinder and the pressure sensor are both set on the clamping frame 20 through a mounting frame, and the upper end face and the lower end face of the driving cylinder are spaced apart from the mounting frame to form an upper and lower moving gap.

[0030] As an embodiment, the rotating device 3 includes a rotating driving member 30 and a transmission unit 31, the driving end of the rotating driving member 30 is connected to the first end of the transmission unit 31, the second end of the transmission unit 31 is connected to the lower clamping portion 22, and the rotating driving member 30 drives the transmission unit 31 to rotate to drive the lower clamping portion 22 to rotate.

[0031] As an embodiment, the transmission unit 31 includes a first transmission wheel 310, a second transmission wheel 311 and a transmission belt 312. The first transmission wheel 310 can be rotatably installed on the driving end of the rotating driving member 30, the second transmission wheel 311 can be rotatably installed on the bottom end of the lower clamping portion 22, and the transmission belt 312 can be rotatably mounted on the first transmission wheel 310 and the second transmission wheel 311. The rotating driving member 30 drives the first transmission wheel 310 to rotate, and drives the second transmission wheel 311 to rotate through the transmission belt 312, so as to drive the lower clamping portion 22 to rotate.

[0032] As an embodiment, the lower clamping portion 22 includes a lower clamping member 220 and a lower rotating shaft 221. The lower rotating shaft 221 is fixedly inserted through the middle of the lower clamping member 220. The lower clamping member 220 is configured to clamp the second end of the engine blade to be tested, and the second transmission wheel 311 is fixedly sleeved on the lower rotating shaft 221.

[0033] As an implementation manner, a waste collecting device 5 is fixedly mounted on the upper end of the lower clamping portion 22 , and the waste collecting device 5 is configured to collect waste dropped by the engine blade to be tested during the test.

[0034] It can be seen that the waste collection device 5 is added to collect the waste generated by the engine blade to be tested during the test to avoid waste splashing.

[0035] As an implementation manner, a height adjustment unit 6 is disposed at the bottom of the frame 1 , and the height adjustment unit 6 is configured to drive the frame 1 to rise and fall so as to adjust the height of the engine blade to be tested.

[0036] As an embodiment, the frame 1 is provided with a first transverse unit 7 and a second transverse unit. The first transverse unit 7 includes a transverse module 70 and a first transverse member 71. The transverse module 70 moves in a first direction ( Figure 1 The first lateral moving member 71 is connected to the first lateral moving member 71 through the slider 9. The second lateral moving unit includes a second lateral moving member 8. The bottom surface of the second lateral moving member 8 is symmetrically provided with sliding protrusions 80. A sliding groove 710 is provided on the first lateral moving member 71 corresponding to the sliding protrusion 80. The sliding groove 710 is moved back and forth along the second direction ( Figure 1The clamping device 2 is fixedly mounted on the second transverse member 8, and the second transverse member 8 reciprocates along the second direction through the sliding cooperation between the sliding protrusion 80 and the sliding groove 710 to drive the clamping device 2 to move.

[0037] Based on the above-mentioned vertical fixture capable of simulating the centrifugal force of engine blades, an engine blade testing machine is provided, comprising the above-mentioned vertical fixture capable of simulating the centrifugal force of engine blades.

[0038] When the above-mentioned vertical fixture that can simulate the centrifugal force of engine blades is working: first, according to the specifications of the engine blades to be tested, the height adjustment device drives the frame 1 to move to the specified height, and the first transverse movement unit 7 and the second transverse movement unit move the engine blades to be tested into place in the horizontal direction; then the upper clamping part 21 and the lower clamping part 22 clamp the first end and the second end of the engine blades to be tested respectively; the rotating drive part 30 drives the first transmission wheel 310 to rotate, and drives the second transmission wheel 311 to rotate through the transmission belt 312, and drives the lower rotating shaft 221 to rotate; at the same time, the upper clamping part 21 rotates synchronously, driving the engine blades to be tested to rotate; the combustion chamber performs a thermal test simulation on the engine blades, at this time, the lifting drive part 40 drives the lifting part 41 to rise, so that the upper clamping part 21 applies a pulling force to the engine blades to be tested to simulate the centrifugal force of the engine blades when rotating at high speed, and the detection component 42 detects the reaction force generated by the lifting drive part 40 and simulates the centrifugal force data of the engine blades.

[0039] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vertical fixture capable of simulating the centrifugal force of engine blades, characterized in that: The vertical fixture capable of simulating the centrifugal force of engine blades comprises a frame, a clamping device, a rotating device and a lifting assembly, wherein: The clamping device comprises a clamping frame, an upper clamping part and a lower clamping part, the clamping frame is installed on the frame along the height direction, the upper clamping part can be rotatably installed at the top end of the clamping frame, the upper clamping part is configured to clamp the first end of the engine blade to be tested, the lower clamping part can be rotatably installed at the bottom end of the clamping frame, the lower clamping part is configured to clamp the second end of the engine blade to be tested, the driving end of the rotating device is connected to the lower clamping part, the rotating device drives the lower clamping part to rotate, so as to cooperate with the upper clamping part to drive the engine blade to be tested to rotate, the lifting assembly comprises a lifting drive member and a lifting member, the lifting member can be lifted and sleeved on the top end of the clamping frame, the driving end of the lifting drive member is connected to the first end of the lifting member, the second end of the lifting member is fixedly connected to the upper clamping part, and the lifting drive member is configured to drive the lifting member to rise and fall; The lifting drive member drives the lifting member to rise, thereby causing the upper clamping portion to apply a pulling force to the engine blade to be tested, so as to simulate the centrifugal force of the engine blade when rotating at a high speed.

2. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 1, characterized in that: The lifting assembly also includes a detection component, which is fixedly arranged on the clamping frame. The fixed end of the lifting drive is connected to the detection component. The detection component is configured to detect the reaction force exerted on the fixed end of the lifting drive when the lifting drive drives the lifting member to rise.

3. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 1, characterized in that: The rotating device includes a rotating drive member and a transmission unit, wherein the driving end of the rotating drive member is connected to the first end of the transmission unit, and the second end of the transmission unit is connected to the lower clamping portion. The rotating drive member drives the transmission unit to rotate to drive the lower clamping portion to rotate.

4. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 3, characterized in that: The transmission unit includes a first transmission wheel, a second transmission wheel and a transmission belt. The first transmission wheel is rotatably mounted on the driving end of the rotary drive member, the second transmission wheel is rotatably mounted on the bottom end of the lower clamping portion, and the transmission belt is rotatably sleeved on the first transmission wheel and the second transmission wheel. The rotary drive member drives the first transmission wheel to rotate, and drives the second transmission wheel to rotate through the transmission belt, so as to drive the lower clamping portion to rotate.

5. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 4, characterized in that: The lower clamping portion includes a lower clamping piece and a lower rotating shaft, the lower rotating shaft is fixedly penetrated through the middle of the lower clamping piece, the lower clamping piece is configured to clamp the second end of the engine blade to be tested, and the second transmission wheel is fixedly sleeved on the lower rotating shaft.

6. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 1, characterized in that: A waste collecting device is fixedly mounted on the upper end of the lower clamping portion, and the waste collecting device is configured to collect waste dropped by the engine blade to be tested during the test.

7. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 1, characterized in that: A height adjustment unit is disposed at the bottom of the frame, and the height adjustment unit is configured to drive the frame to rise and fall so as to adjust the height of the engine blade to be tested.

8. The vertical fixture capable of simulating the centrifugal force of engine blades according to claim 1, characterized in that: The frame is provided with a first transverse movement unit and a second transverse movement unit, the first transverse movement unit includes a transverse movement module and a first transverse member, the transverse movement module is laid on the top of the frame along the first direction, the driving end of the transverse movement module is connected to the first transverse member through a slider, the transverse movement module is configured to drive the first transverse member to reciprocate along the first direction, the second transverse movement unit includes a second transverse member, the bottom surface of the second transverse member is symmetrically provided with sliding protrusions, corresponding to the sliding protrusions, a sliding groove is opened on the first transverse member, the sliding groove extends along the second direction, the clamping device is fixedly installed on the second transverse member, the second transverse member reciprocates along the second direction through the sliding cooperation between the sliding protrusion and the sliding groove to drive the clamping device to move, the first direction and the second direction are perpendicular.

9. An engine blade testing machine, characterized in that: The engine blade testing machine comprises the vertical fixture capable of simulating the centrifugal force of the engine blade as described in any one of claims 1 to 8.

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