Loading device based on gas turbine and lift fan
By adopting friction braking and cooling channel design in the gas turbine and lift fan loading device, the gearbox vibration problem was solved, and the stable operation and service life of the device were achieved.
Patent Information
- Application Number
- CN202422775245.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The gearbox of the traditional loading device is prone to vibration due to assembly and wear during gas turbine and lift fan testing, affecting the test results.
The design of the first and second brakes and friction plates uses friction braking instead of gear meshing, combined with cooling channels and spline structures to ensure the stability of device operation and heat dissipation effect.
The vibration and heat accumulation during the operation of the device are reduced, and the stability of the test and the service life of the device are improved.
Smart Images
Figure CN223307859U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine testing, in particular to a loading device based on a gas turbine and a lift fan. Background Art
[0002] In the aviation field, engine testing technology has always been a complex field involving multiple disciplines, encompassing tests of engine performance, durability, vibration characteristics, and other aspects. With the development of aviation technology, the requirements for engine performance are becoming increasingly higher, and testing technology is also constantly improving.
[0003] In the traditional testing of gas turbines and lift fans in the aviation field, the common loading device used is the gearbox. Due to the application environment limitations of gas turbines and lift fans, the requirements for the loaded gearbox are relatively high. However, in actual use, the gearbox is easily affected by factors such as assembly and wear, and is prone to vibration, thereby affecting the test results. How to solve this problem has been a research topic. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention provides a loading device based on a gas turbine and a lift fan to solve the above technical problems.
[0005] To achieve the above objectives, an embodiment of the present application provides a loading device based on a gas turbine and a lift fan, comprising a first bearing seat, a second bearing seat, and a third bearing seat; a first brake is disposed between the first and second bearing seats, one end of the first brake being connected to the first bearing seat and the other end being connected to the second bearing seat; a second brake is disposed between the second and third bearing seats, one end of the second brake being connected to the second bearing seat and the other end being connected to the third bearing seat; a first brake disc is disposed on an inner side of the first brake, a first friction pad that cooperates with the first brake being fixed thereto; a second brake disc is disposed on an inner side of the second brake, a second friction pad that cooperates with the second brake being fixed thereto; the first brake disc is sleeved on a connecting rod and is fixedly connected or integrally provided with the connecting rod; the second brake disc is sleeved on a connecting pipe and is fixedly connected or integrally provided with the connecting pipe; an end of the connecting pipe that is not connected to the first friction pad is located within the connecting pipe and is coaxially arranged therewith.
[0006] Preferably, a first connecting portion is provided at the position where the first brake disc is connected to the connecting rod, and the first connecting portion is connected to the connecting rod; one end of the first connecting portion is rotatably connected to the first bearing seat, and the other end is rotatably connected to the second bearing seat.
[0007] Preferably, a second connecting portion is provided at the position where the second brake disc is connected to the connecting pipe, and the second connecting portion is connected to the connecting pipe; one end of the second connecting portion is rotatably connected to the second bearing seat, and the other end is rotatably connected to the third bearing seat.
[0008] Preferably, there are multiple first brakes, and the multiple first brakes are circumferentially arranged with the connecting rod as the center; there are multiple second brakes, and the multiple second brakes are circumferentially arranged with the connecting pipe as the center.
[0009] Preferably, first friction plates are fixed on both sides of the first brake disc; and second friction plates are fixed on both sides of the second brake disc.
[0010] Preferably, a first cooling channel is provided inside the first brake, and the first cooling channel extends out of the first brake; a second cooling channel is provided inside the second brake, and the second cooling channel extends out of the second brake.
[0011] Preferably, the connecting rod is provided with a spline, and the connecting pipe is provided with a spline.
[0012] Another technical solution of the present application is: a loading device based on a gas turbine and a lift fan, comprising a first bearing seat, a second bearing seat, and a third bearing seat; a first brake is disposed between the first and second bearing seats, one end of the first brake being connected to the first bearing seat and the other end being connected to the second bearing seat; a second brake is disposed between the second and third bearing seats, one end of the second brake being connected to the second bearing seat and the other end being connected to the third bearing seat; a first brake disc is disposed on the inner side of the first brake, a first friction pad for mating with the first brake being fixed thereto, the first friction pad being disposed on the first brake; a second brake disc is disposed on the inner side of the second brake, a second friction pad for mating with the second brake being fixed thereto; the first brake disc is sleeved on a connecting rod and is fixedly connected or integrally provided with the connecting rod; the second brake disc is sleeved on a connecting pipe and is fixedly connected or integrally provided with the connecting pipe; the end of the connecting pipe not connected to the first friction pad passes through the connecting pipe and is coaxially disposed therewith.
[0013] The utility model provides a loading device based on a gas turbine and a lift fan. When in use, the loading device based on the gas turbine and the lift fan is placed vertically, the first bearing seat is located above the second bearing seat, the connecting rod and the connecting pipe are respectively connected to the output inner shaft and the output outer shaft of the tested engine. During the test, the operation of the engine drives the first brake disc and the second brake disc to be coaxially reversed; the first friction plate on the first brake disc and the first brake generate friction braking, and the second friction plate on the second brake disc and the second brake generate friction braking as the engine load. Compared with the mode of using a gearbox as a load, there is no meshing relationship between gears, the operation is relatively stable, and therefore it is not easy to generate vibration. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the three-dimensional structure of a loading device based on a gas turbine and a lift fan in an embodiment;
[0015] Figure 2 Schematic diagram of the front structure of a loading device based on a gas turbine and a lift fan in an embodiment;
[0016] Figure 3 for Figure 2 AA cross-sectional view;
[0017] Figure 4 for Figure 2 CC cross-sectional view;
[0018] Figure 5 is a diagram showing the use status of a loading device based on a gas turbine and a lift fan in an embodiment;
[0019] In the accompanying drawings:
[0020] First bearing seat 1, second bearing seat 2, third bearing seat 3, first brake 4, second brake 5, first friction plate 6, first brake disc 7, second friction plate 8, second brake disc 9, connecting rod 10, first connecting part 10-1, connecting pipe 11, second connecting part 11-1, engine 12. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] Example 1:
[0023] The utility model provides a loading device based on a gas turbine and a lift fan, see Figure 1-Figure 3 , including a first bearing seat 1, a second bearing seat 2 and a third bearing seat 3; a first brake 4 is provided between the first bearing seat and the second bearing seat, one end of the first brake is connected to the first bearing seat, and the other end is connected to the second bearing seat; a second brake 5 is provided between the second bearing seat and the third bearing seat, one end of the second brake is connected to the second bearing seat, and the other end is connected to the third bearing seat, wherein the first brake and the second brake can be one, in this embodiment: the first brake is preferably multiple, and the multiple first brakes are circumferentially arranged with the connecting rod as the center;
[0024] The second brake is preferably multiple, and the multiple second brakes are circumferentially arranged with the connecting pipe as the center, so that the space between the multiple first brakes and the space between the multiple second brakes facilitate the rapid dissipation of heat generated during the operation of the device; a first brake disc 7 is provided on the inner side of the first brake, and a first friction plate 6 that cooperates with the first brake is fixed on the first brake disc, wherein the structure of the first brake can use the existing structure, as long as it can achieve the function of cooperating with the first friction plate to produce a braking effect, and no specific limitation is made here; a second brake disc 9 is provided on the inner side of the second brake, and a second friction plate 8 that cooperates with the second brake is fixed on the second brake disc, wherein the structure of the second brake can use the existing structure, as long as it can achieve the function of cooperating with the second friction plate to produce a braking effect, and no specific limitation is made here ; The first brake disc is sleeved on a connecting rod 10, fixedly connected to the connecting rod or integrally arranged; the second brake disc is sleeved on a connecting tube 11, fixedly connected to the connecting tube or integrally arranged; the end of the connecting tube that is not connected to the first friction plate is located in the connecting tube and is coaxially arranged with the connecting tube; the end of the first brake disc connected to the connecting rod is provided with a first connecting portion 10-1, and the first connecting portion is connected to the connecting rod; one end of the first connecting portion is rotatably connected to the first bearing seat, and the other end is rotatably connected to the second bearing seat; the end of the second brake disc connected to the connecting tube is provided with a second connecting portion 11-1, and the second connecting portion is connected to the connecting tube; one end of the second connecting portion is rotatably connected to the second bearing seat, and the other end is rotatably connected to the third bearing seat.
[0025] When the above-mentioned loading device based on gas turbine and lift fan is used, refer to Figure 1The loading device based on the gas turbine and the lift fan is placed vertically, the first bearing seat is located above the second bearing seat, and the connecting rod and the connecting pipe are respectively connected to the output inner shaft and the output outer shaft of the engine 12. The structure of the engine in the aviation field is well known to those skilled in the art and will not be described in detail here. During the test, the operation of the engine drives the first brake disc and the second brake disc to be coaxially reversed; the first friction plate on the first brake disc and the first brake generate friction braking, and the second friction plate on the second brake disc and the second brake generate friction braking as the engine load. Compared with the gearbox as the load, there is no meshing relationship between the gears, and the operation is relatively smooth. , so it is not easy to generate vibration; in addition, the first connecting part is rotatably connected to the first bearing seat and the second bearing seat respectively, and the second connecting part is rotatably connected to the second bearing seat and the third bearing seat respectively, so that the first bearing seat, the second bearing seat and the third bearing seat form a restriction on the connecting rod and the connecting pipe, thereby further maintaining the coaxiality of the connecting rod and the connecting pipe during operation; in addition, the heat generated during friction braking can be easily and effectively carried away by the air convection generated by the coaxial reversal of the brake disc, with good heat dissipation effect, which can reduce the accumulation of heat during the operation of the loading device based on the gas turbine and the lift fan, resulting in the weakening of the device performance, and increase the service life of the device.
[0026] As a preferred embodiment, first friction plates are fixed to both sides of the first brake disc; and second friction plates are fixed to both sides of the second brake disc.
[0027] As a preferred embodiment, see Figure 4 The first brake is provided with a first cooling channel 6-1 inside. The first cooling channel extends outside the first brake. During manufacturing, a liquid inlet hole and a liquid outlet hole can be provided on the first brake, and the two ends of the first cooling channel are connected to the liquid inlet hole and the liquid outlet hole respectively. The second brake is provided with a second cooling channel inside. The second cooling channel extends outside the second brake. During manufacturing, a liquid inlet hole and a liquid outlet hole can be provided on the second brake, and the two ends of the second cooling channel are connected to the liquid inlet hole and the liquid outlet hole respectively. This structure provides a cooling channel, and when in use, water or other refrigerant is injected into the cooling channel, so that the heat generated by the friction pad during friction braking is more easily and quickly removed. The air convection generated by the coaxial reversal of the brake disc mainly dissipates the heat generated by the brake disc, thereby improving the heat dissipation effect.
[0028] In order to facilitate connection, a spline is provided on the connecting rod and a spline is provided on the connecting pipe.
[0029] Example 2:
[0030] The structure of Example 2 is substantially the same as that of Example 1, except that the end of the connecting tube that is not connected to the first friction plate passes through the connecting tube instead of being located inside the connecting tube.
[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "back" and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0033] The above-described embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. A loading device based on a gas turbine and a lift fan, characterized in that: It includes a first bearing seat, a second bearing seat and a third bearing seat; A first brake is provided between the first bearing seat and the second bearing seat, one end of the first brake is connected to the first bearing seat, and the other end is connected to the second bearing seat; A second brake is provided between the second bearing seat and the third bearing seat, one end of the second brake is connected to the second bearing seat, and the other end is connected to the third bearing seat; A first brake disc is provided on the inner side of the first brake, and a first friction plate that cooperates with the first brake is fixed on the first brake disc; A second brake disc is provided on the inner side of the second brake, and a second friction plate that cooperates with the second brake is fixed on the second brake disc; The first brake disc is sleeved on a connecting rod and is fixedly connected to or integrally provided with the connecting rod; the second brake disc is sleeved on a connecting tube and is fixedly connected to or integrally provided with the connecting tube; the end of the connecting tube that is not connected to the first friction plate is located inside the connecting tube and is coaxially provided with the connecting tube.
2. The loading device based on a gas turbine and a lift fan according to claim 1, characterized in that: The first brake disc and One end of the connecting rod is provided with a first connecting portion, and the first connecting portion is connected to the connecting rod; One end of the first connecting portion is rotatably connected to the first bearing seat, and the other end is rotatably connected to the second bearing seat.
3. A loading device based on a gas turbine and a lift fan according to claim 1 or 2, characterized in that: A second connecting portion is provided at one end of the second brake disc connected to the connecting pipe, and the second connecting portion is connected to the connecting pipe; One end of the second connecting portion is rotatably connected to the second bearing seat, and the other end is rotatably connected to the third bearing seat.
4. The loading device based on a gas turbine and a lift fan according to claim 1, characterized in that: There are multiple first brakes, and the multiple first brakes are circumferentially arranged around the connecting rod; There are a plurality of second brakes, and the plurality of second brakes are circumferentially arranged around the connecting pipe.
5. A loading device based on a gas turbine and a lift fan according to claim 1 or 4, characterized in that: First friction plates are fixed on both sides of the first brake disc; Second friction plates are fixed on both sides of the second brake disc.
6. The loading device based on a gas turbine and a lift fan according to claim 1, characterized in that: A first cooling channel is provided inside the first brake, and the first cooling channel extends outside the first brake; A second cooling channel is provided inside the second brake, and the second cooling channel extends out of the second brake.
7. The loading device based on a gas turbine and a lift fan according to claim 1, characterized in that: The connecting rod is provided with a spline, and the connecting pipe is provided with a spline.
8. A loading device based on a gas turbine and a lift fan, characterized in that: It includes a first bearing seat, a second bearing seat and a third bearing seat; A first brake is provided between the first bearing seat and the second bearing seat, one end of the first brake is connected to the first bearing seat, and the other end is connected to the second bearing seat; A second brake is provided between the second bearing seat and the third bearing seat, one end of the second brake is connected to the second bearing seat, and the other end is connected to the third bearing seat; A first brake disc is provided on the inner side of the first brake, a first friction plate matched with the first brake is fixed on the first brake disc, and the first friction plate is provided on the first brake; A second brake disc is provided on the inner side of the second brake, and a second friction plate that cooperates with the second brake is fixed on the second brake disc; The first brake disc is sleeved on a connecting rod and is fixedly connected to or integrally provided with the connecting rod; the second brake disc is sleeved on a connecting tube and is fixedly connected to or integrally provided with the connecting tube; the end of the connecting tube that is not connected to the first friction plate passes through the connecting tube and is coaxially provided with the connecting tube.