An overall test bench for a turboshaft engine

Abstract

The present invention provides a test bench for a whole turboshaft engine, belonging to the technical field of aeroengines, comprising: a main support mounting bracket, an auxiliary support mounting bracket and an air intake duct mounting bracket are arranged on a mounting plate; a main support group for supporting a transition reducer of the turboshaft engine is detachably mounted on the main support mounting bracket; an auxiliary support group for supporting the fuselage of the turboshaft engine is detachably mounted on the auxiliary support mounting bracket; the air intake duct mounting bracket is mounted on the mounting plate, and the air intake duct mounting bracket is provided with a mounting support for supporting the air intake duct of the turboshaft engine, and the mounting support can perform sliding movements along the length direction and the width direction on the mounting plate; in the present invention, for turboshaft engines in different assembly states, the corresponding main support group or auxiliary support group can be installed, that is, there is no need to develop and manufacture test benches for turboshaft engines in different assembly states, and at the same time, the sliding of the mounting support can be used to adapt to the air intake ducts at different installation positions in different assembly states.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engines, and particularly to a test bench for a whole turboshaft engine. Background Art

[0002] After the turboshaft engine is installed, it needs to be tested in a ground test room. Specifically, the turboshaft engine is firmly installed on the test bench, and a hydraulic dynamometer is used to connect with the power output shaft of the turboshaft engine, so as to absorb and measure the shaft power output by the engine. However, since the power output shaft of the turboshaft engine is not collinear with the rotor main shaft of the turboshaft engine itself, when the turboshaft engines on both symmetric sides of the aircraft are installed on the test bench, the fixed positions are also different, and the position of the support point needs to be adjusted adaptively according to the turboshaft engines at different positions on the test bench.

[0003] For example, Chinese patent document CN112345255B discloses a test bench for the whole process of a turboshaft engine, including a main installation mechanism and an auxiliary installation mechanism. The main installation mechanism is used to support and install the intermediate reducer of the turboshaft engine, and the auxiliary installation mechanism is used to support and install the fuselage of the turboshaft engine. In order to adapt to the installation and fixation of turboshaft engines at different positions, the main installation mechanism can slide, and the auxiliary installation mechanism respectively has a support point for supporting turboshaft engines at different positions. When supporting the turboshaft engine at the corresponding position, the corresponding support point can be lifted up.

[0004] However, in the above solution, it is only designed for one type of turboshaft engine, and for turboshaft engines of different specifications, it cannot be adjusted adaptively, and turboshaft engines of different specifications cannot be installed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the test bench for the turboshaft engine in the prior art cannot be adjusted and installed for turboshaft engines in different assembly states, so as to provide a test bench for the whole turboshaft engine.

[0006] To solve the above technical problem, the present invention provides a test bench for the whole turboshaft engine, including: a mounting plate, on which there are provided: a main support point mounting frame, an auxiliary support point mounting frame and an air intake duct mounting frame;

[0007] A main support group for supporting the intermediate reducer of the turboshaft engine is detachably installed on the main support point mounting frame;

[0008] An auxiliary support group for supporting the fuselage of the turboshaft engine is detachably installed on the auxiliary support point mounting frame;

[0009] The intake duct mounting bracket is provided with a mounting support for supporting the intake duct of the turboshaft engine, and the mounting support can slide along the length direction and the width direction respectively on the mounting plate.

[0010] Preferably, the main support group includes a first main support member, a second main support member, a third main support member and a fourth main support member. The first main support member and the second main support member are located outside the third main support member and the fourth main support member.

[0011] The first turboshaft engine in a group of symmetrically mounted turboshaft engines is supported by the first main support member and the third main support member, and the second turboshaft engine cooperating with the first turboshaft engine is supported by the second main support member and the fourth main support member.

[0012] Preferably, the third main support member and the fourth main support member are respectively rotatably mounted on the main fulcrum mounting bracket through a connecting shaft. The third main support member and the fourth main support member are respectively provided with support sections extending in a direction perpendicular to the connecting shaft. By rotating the third main support member and the fourth main support member, the support sections can face upward or downward.

[0013] Preferably, a mounting seat is detachably provided on the main fulcrum mounting bracket, and the connecting shaft is connected to the main fulcrum mounting bracket through the mounting seat.

[0014] Preferably, the mounting seat is L-shaped. The mounting seat includes a horizontal plate connected to the main fulcrum mounting bracket and a vertical plate perpendicular to the horizontal plate, and the connecting shaft is mounted on the vertical plate.

[0015] Preferably, a locking nut is provided on the connecting shaft, and the connecting shaft can be axially locked or unlocked with the mounting seat through the locking nut.

[0016] Preferably, the connecting shaft is connected to the mounting seat through a spherical plain bearing, and the connecting shaft can swing or conically swing about its axis through the spherical plain bearing.

[0017] Preferably, the mounting surfaces of the first main support member and the second main support member on the main fulcrum mounting bracket are higher than the mounting surfaces of the third main support member and the fourth main support member on the main fulcrum mounting bracket.

[0018] Preferably, the first main support member, the second main support member, the third main support member and the fourth main support member all extend and are mounted towards the center direction.

[0019] Preferably, the auxiliary support group includes a first auxiliary support member and a second auxiliary support member spaced apart along the width direction. The first auxiliary support member and the second auxiliary support member are respectively connected to a support rod, and the bottom end of the support rod is rotatably connected to the mounting plate.

[0020] Preferably, the first auxiliary support and the second auxiliary support are respectively rotatably connected to the support rod.

[0021] Preferably, a transverse guide rail is provided on the intake duct mounting bracket, a longitudinal guide rail is slidably provided on the transverse guide rail, and the mounting bracket is slidably provided on the longitudinal guide rail.

[0022] Preferably, it further includes: a height adjustment rod, the mounting bracket is connected to the longitudinal guide rail through the height adjustment rod, and the height adjustment rod can adjust the height of the mounting bracket.

[0023] Preferably, the height adjustment rod includes: a fixed rod fixedly connected to the longitudinal guide rail and a rotating rod threadedly connected to the fixed rod. A hexagonal structure for screwing is fixedly provided on the outer end face of the rotating rod, and the top end of the rotating rod is rotatably connected to the mounting bracket.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. For the overall engine test stand of the turboshaft engine provided by the present invention, a main support point mounting bracket, an auxiliary support point mounting bracket and an intake duct mounting bracket are respectively provided on the mounting plate. After the main support point mounting bracket is connected to the turboshaft engine, it supports the intermediate reduction gear of the turboshaft engine. After the auxiliary support point mounting bracket is connected to the turboshaft engine, it supports the fuselage of the turboshaft engine. The mounting bracket on the intake duct mounting bracket supports the intake duct of the turboshaft engine. At the same time, in order to adapt to turboshaft engines in different positions, the positions of the intake ducts of the turboshaft engines are different. The mounting bracket can slide along the length direction and the width direction of the mounting plate. By sliding the mounting bracket to adapt to the intake ducts of the engines at different mounting positions, the mounting bracket can support the intake duct. At the same time, the main support point mounting bracket and the auxiliary support point mounting bracket are detachably connected with a main support group and an auxiliary support group. For turboshaft engines in different assembly states, the main support group or the auxiliary support group corresponding to this assembly state can be installed, that is, there is no need to develop and manufacture corresponding test stands for turboshaft engines in different assembly states, reducing the test cost, and at the same time, the disassembly and replacement are more convenient.

[0026] 2. For the overall engine test stand of the turboshaft engine provided by the present invention, the main support group includes a first main support member, a second main support member, a third main support member and a fourth main support member that can be installed in two positions. The first main support member and the third main support member are used to support the first turboshaft engine in a group of symmetrically installed turboshaft engines, and the second main support member and the fourth main support member are used to support the second turboshaft engine that cooperates with the first turboshaft engine, so that the test stand can test two symmetric turboshaft engines, avoiding the need to disassemble the main support group multiple times, thereby increasing the test efficiency.

[0027] 3. The overall engine test stand for the turboshaft engine provided by the present invention has a third main support member and a fourth main support member respectively rotatably mounted on the main fulcrum mounting bracket through a connecting shaft, and the support section connected to the turboshaft engine is perpendicular to the connecting shaft. When installing the first turboshaft engine or the second turboshaft engine, one of the support sections not connected to the turboshaft engine is directed downward, so as to avoid interference with the turboshaft engine during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a perspective view of the overall engine test stand for the turboshaft engine provided in an embodiment of the present invention;

[0030] Figure 2 is Figure 1 the rear view of the main fulcrum mounting bracket in

[0031] Figure 3 is Figure 1 the rear view of the auxiliary fulcrum mounting bracket in

[0032] Figure 4 is Figure 1 the rear perspective view of the air inlet duct mounting bracket in

[0033] Description of the reference numerals in the drawings:

[0034] 1. mounting plate;

[0035] 2. main fulcrum mounting bracket; 211. first main support member; 212. second main support member; 213. third main support member; 214. fourth main support member; 215. locking nut; 221. connecting shaft; 222. support section;

[0036] 3. auxiliary fulcrum mounting bracket; 311. first auxiliary support member; 312. second auxiliary support member; 313. support rod;

[0037] 4. air inlet duct mounting bracket; 411. transverse guide rail; 412. longitudinal guide rail; 413. height adjusting rod; 414. fixing rod; 415. rotating rod;

[0038] 5. mounting support;

[0039] 6. mounting seat; 611. horizontal plate; 612. vertical plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] The overall test bench for the turboshaft engine provided in this embodiment is used for ground tests of the turboshaft engine.

[0045] Such as Figure 1As shown in the figure, a specific implementation of the gas turbine engine test bench provided by this embodiment includes: a mounting plate 1, on which a main support mounting frame 2, an auxiliary support mounting frame 3 and an air intake mounting frame 4 are respectively arranged. A main support group is detachably mounted on the main support mounting frame 2, and the main support group is used to support the intermediate reduction gear of the gas turbine engine. An auxiliary support group is detachably mounted on the auxiliary support mounting frame 3, and the auxiliary support group is used to support the fuselage of the gas turbine engine. The air intake mounting frame 4 is provided with a mounting bracket 5, and the mounting bracket 5 is used to support the air intake of the gas turbine engine. The mounting bracket 5 can slide along the length direction and the width direction respectively on the air intake mounting frame 4. That is to say, the gas turbine engine includes three parts: a fuselage, an intermediate reduction gear and an air intake. The intermediate reduction gear and the air intake are respectively connected to both ends of the fuselage, and the center line of the output shaft of the intermediate reduction gear deviates from the center line of the fuselage. Due to the above structural characteristics of the gas turbine engine, when the gas turbine engine is installed on the test bench of the whole machine, it is connected to the intermediate reduction gear of the gas turbine engine through the main support mounting frame 2, connected to the fuselage of the gas turbine engine through the auxiliary support mounting frame 3, and connected to the air intake of the gas turbine engine through the mounting bracket 5 on the air intake mounting frame 4. When it is necessary to apply gas turbine engines in different assembly states, by replacing the main support group on the main support mounting frame 2, replacing the auxiliary support group on the auxiliary support mounting frame 3, and adjusting the position of the mounting bracket 5 in the length direction and the width direction of the air intake mounting frame 4, the gas turbine engines in various different assembly states can be supported and connected.

[0046] It should be noted that the air inlet duct is installed at the air inlet position of the turboshaft engine. The air inlet duct is relatively long and heavy, and 5 mounting brackets are required to support the air inlet duct. The length direction of the air inlet duct mounting bracket 4 mentioned above refers to the direction parallel to the axis direction of the fuselage of the turboshaft engine, and the width direction of the air inlet duct mounting bracket 4 refers to the direction perpendicular to the length direction. The movement of the mounting bracket 5 along the width direction can adapt to the change in the axis of the turboshaft engine in the width direction in different assembly states. The movement of the mounting bracket 5 along the length direction means that after the air inlet duct is connected to the engine, a large amount of heat will be generated during the operation of the engine, causing the engine to expand due to heat and drive the air inlet duct to move along the axis direction of the air inlet duct; since the mounting bracket 5 always supports the air inlet duct, when the engine expands and deforms due to heat, the mounting bracket 5 will move in the length direction along with the movement of the air inlet duct, so that the air inlet duct and the mounting bracket 5 can move synchronously, avoiding additional bending moment on the air inlet duct caused by the non-movement of the mounting bracket 5 when the air inlet duct expands due to heat, and causing potential safety hazards in the operation of the engine. Among them, the axis direction of the air inlet duct is parallel to the length direction. At the same time, the main support point mounting bracket 2 and the auxiliary support point mounting bracket 3 are detachably connected with the main support group and the auxiliary support group. For turboshaft engines in different assembly states, the corresponding main support group or auxiliary support group can be installed, that is, there is no need to develop and manufacture corresponding test stands for turboshaft engines in different assembly states, reducing the test cost, and at the same time, the disassembly and replacement are more convenient.

[0047] Such as Figure 1 , Figure 2As shown in the figure, the whole-engine test bench for the turboshaft engine provided in this embodiment can install two types of turboshaft engines in a matching assembly state. Specifically, when the turboshaft engine is in use, there are two symmetrical types, which are respectively and symmetrically installed on both sides of the aircraft. In order to be able to adapt to the testing of two symmetrical structures of turboshaft engines, in the whole-engine test bench for the turboshaft engine provided in this embodiment, the main support group includes a first main support member 211, a second main support member 212, a third main support member 213, and a fourth main support member 214. The first main support member 211 and the second main support member 212 are located outside the third main support member 213 and the fourth main support member 214. After the first main support member 211 and the second main support member 212 are connected to the turboshaft engine, they can absorb the radial thermal expansion of the engine. The first main support member 211 and the third main support member 213 are used to support the first turboshaft engine in a group of symmetrical turboshaft engines, and the second main support member 212 and the fourth main support member 214 are used to support the second turboshaft engine that matches the first turboshaft engine. The first turboshaft engine and the second turboshaft engine are two symmetrical engines, and they have different support point positions, that is, the installation positions of the first turboshaft engine and the second turboshaft engine are different. Through the first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214, the test bench can meet the testing of two symmetrical turboshaft engines, avoiding multiple disassembly of the main support group and thus increasing the testing efficiency. In addition, as an alternative embodiment, the main support group includes: the first main support member 211 and the third main support member 213, which can only fixedly install the first turboshaft engine. When the second turboshaft engine needs to be installed, the main support group is rotationally arranged on the mounting plate 1, and after the main support group is horizontally rotated 180 degrees and fixed, the second turboshaft engine is installed.

[0048] Specifically, the first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214 are connected to the main fulcrum mounting bracket 2 through the mounting seat 6. The mounting seat 6 is L-shaped and is divided into a first connecting plate and a second connecting plate that are perpendicular to each other. The first connecting plate is arranged on the main fulcrum mounting bracket 2 through bolts, and the second connecting plate is connected to the connecting shaft 221 through a spherical bearing.

[0049] As Figure 2As shown in the figure, this is an implementation of the overall engine test stand for a turboshaft engine provided in this embodiment. The third main support member 213 and the fourth main support member 214 are respectively rotatably installed on the main fulcrum mounting bracket 2 through a connecting shaft 221. There is also a support section 222 extending in a direction perpendicular to the connecting shaft 221. The third main support member 213 and the fourth main support member 214 rotate about the axis of the connecting shaft 221, enabling the support section 222 to face upward or downward. When the support section 222 faces upward, it is used to connect to the mounting section of the engine. One of the support sections 222 that is not connected to the turboshaft engine faces downward to avoid interference with the turboshaft engine during installation. Additionally, as an alternative implementation, the third main support member 213 and the fourth main support member 214 can be respectively rotatably connected to the mounting plate 1 through the connecting shaft 221. Additionally, as an alternative implementation, the support section 222 is in the same extending direction as the connecting shaft 221.

[0050] Specifically, the connecting shaft 221 is horizontally arranged, the support section 222 is vertically arranged with respect to the connecting shaft 221, and the end of the support section 222 is used to connect to the mounting section of the turboshaft engine. The support section 222 is the mounting section in the prior art and can be connected to the mounting section of the engine. Its structure is a conventional technical means and will not be elaborated in this invention.

[0051] As Figure 2 shown in the figure, this is an implementation of the overall engine test stand for a turboshaft engine provided in this embodiment. A mounting seat 6 is detachably provided on the main fulcrum mounting bracket 2. The connecting shaft 221 is connected to the main fulcrum mounting bracket 2 through the mounting seat 6. The connecting shaft 221 is installed on the mounting seat 6 through a bearing, enabling the connecting shaft 221 to rotate about its axis. For turboshaft engines in different assembly states, they have different mounting positions, so it is necessary to disassemble and replace different main support groups. During disassembly, only the mounting seat 6 needs to be disassembled from the main fulcrum, and there is no need to disassemble the connecting shaft 221 from the bearing or disassemble the bearing, which improves the disassembly efficiency. Additionally, as an alternative implementation, the mounting seat 6 can be not provided, and the connecting shaft 221 can be disassembled together with the bearing by disassembling the bearing, and then a new connecting shaft 221 and bearing can be replaced.

[0052] As Figure 2As shown in the figure, this is an implementation of the overall engine test bench for the turboshaft engine provided in this embodiment. The mounting base 6 is L-shaped. The mounting base 6 includes a horizontal plate 611 connected to the main fulcrum mounting bracket 2 and a vertical plate 612 perpendicular to the horizontal plate 611. The connecting shaft 221 is installed on the vertical plate 612. The horizontal plate 611 of the mounting base 6 is connected to the main fulcrum mounting bracket 2 by bolts. A bearing is provided on the vertical plate 612, and the connecting shaft 221 is connected to the vertical plate 612 through the bearing, where the connecting shaft 221 is horizontally arranged. During disassembly, only the bolts on the horizontal plate 611 need to be removed to disassemble any support member of the main support group. At the same time, when replacing the new main support group, the new connecting shaft 221 has been installed on the new mounting base 6. At this time, the new mounting base 6 can be installed on the main fulcrum mounting bracket 2, and its disassembly and installation are more convenient. In addition, as an alternative implementation, the mounting base 6 is a vertical vertical plate 612 without a horizontal plate 611. The lower end of the vertical plate 612 is fixed to the main fulcrum mounting bracket 2 by bolts, and the upper end is provided with a connecting shaft 221.

[0053] As Figure 2 shown in the figure, this is an implementation of the overall engine test bench for the turboshaft engine provided in this embodiment. A locking nut 215 is provided on the connecting shaft 221. The connecting shaft 221 can be axially locked or unlocked with the mounting base 6 through the locking nut 215. Through axial locking, the connecting shaft 221 cannot rotate circumferentially. When the axial locking is unlocked, the connecting shaft 221 can be rotated to make the support section 222 face upward or downward. The locking nut 215 facilitates adjusting the orientation of the support section 222. In addition, as an alternative implementation, the locking nut 215 may not be provided, and the connecting shaft 221 is threadedly connected to the vertical plate 612 of the mounting base 6.

[0054] Specifically, the locking nut 215 is threadedly connected to the end of the connecting shaft 221. The connecting shaft 221 passes through the mounting base 6 and is connected to the locking nut 215. The locking nut 215 is screwed and abutted against the end face of the mounting base 6 to restrict the rotation of the connecting shaft 221. Through the locking nut 215, the support sections 222 of the second main support member 212 and the fourth main support member 214 face the same fixed direction. At this time, the support sections 222 of the second main support member 212 and the fourth main support member 214 are both arranged upward, which is convenient for fixedly connecting with the mounting lugs of the engine. Similarly, the support sections 222 of the first main support member 211 and the third main support member 213 can be made to face the same fixed direction.

[0055] As Figure 2As shown in the figure, this is an implementation of the test bench for the whole turboshaft engine provided in this embodiment. The connecting shaft 221 is connected to the mounting base 6 through a spherical bearing. The connecting shaft 221 can swing or conically swing around the axis of the spherical bearing, and absorb the radial thermal expansion of the engine through axial swing and conical swing. Among them, the radial thermal expansion is the radial deformation generated after the engine is heated. In addition, as an alternative implementation, the spherical bearing can be replaced with a spherical roller bearing.

[0056] As Figure 2 shown in the figure, this is an implementation of the test bench for the whole turboshaft engine provided in this embodiment. The mounting surfaces of the first main support member 211 and the second main support member 212 on the main fulcrum mounting bracket 2 are higher than the mounting surfaces of the third main support member 213 and the fourth main support member 214 on the main fulcrum mounting bracket 2. The mounting surface refers to the horizontal plane of the mounting positions of the first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214 on the main fulcrum mounting bracket 2. The mounting surface between the first main support member 211 and the fourth main support member 214 is stepped; the mounting surface between the second main support member 212 and the third main support member 213 is also stepped. Since the third main support member 213 and the fourth main support member 214 have support sections 222 perpendicular to the connecting shaft 221, after the support sections 222 of the third main support member 213 and the fourth main support member 214 are arranged facing each other, the end faces of the support sections 222 of the first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214 are on the same horizontal plane, which can better realize the connection with the mounting lugs of the turboshaft engine. In addition, as an alternative implementation, the mounting surfaces of the first main support member 211 and the second main support member 212 are arranged on the same plane as the mounting surfaces of the third main support member 213 and the fourth main support member 214. At this time, the connecting shaft 221 of the first main support member 211 and the second main support member 212 can be set perpendicular to the support section 222, so that the end faces of the support sections 222 of the first support member and the second main support member 212 are on the same plane as the end faces of the support sections 222 of the third main support member 213 and the fourth main support member 214.

[0057] As Figure 2As shown, an embodiment of the gas turbine engine test bench provided in this embodiment is such that the first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214 are all installed extending towards the center direction, making the overall structure more compact after installation and having no interference with each other when any one of them is disassembled, which is convenient for installation and disassembly. Specifically, the connecting shafts 221 and the support sections 222 of the first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214 extend towards the center. Additionally, as an alternative embodiment, the first main support member 211 and the second main support member 212 can be arranged to extend outwards for installation.

[0058] As Figure 1 , Figure 3 shown, in order to be able to adapt to the tests of two symmetrically structured gas turbine engines, in the gas turbine engine test bench provided in this embodiment, the auxiliary support group includes: a first auxiliary support member 311 and a second auxiliary support member 312 arranged at intervals in the width direction. The first auxiliary support member 311 and the second auxiliary support member 312 are respectively connected to a support rod 313. The bottom end of the support rod 313 is rotatably connected to the mounting plate 1. When installing the first gas turbine engine, the supports are respectively: the first main support member 211, the third main support member 213, and the first auxiliary support member 311; when installing the second gas turbine engine, the supports are respectively: the second main support member 212, the fourth main support member 214, and the second auxiliary support member 312. The bottom end of the support rod 313 is rotatably connected to the mounting plate 1, which is convenient for laying down the unused auxiliary support member to avoid interference during installation. Additionally, as an alternative embodiment, the auxiliary support group can be provided with only one first auxiliary support member 311, and by sliding the first auxiliary support member 311 along the width direction of the mounting plate 1, the installation of the first gas turbine engine and the second gas turbine engine can be realized.

[0059] Specifically, the bottom end of the support rod 313 has a connecting portion inserted into the mounting plate 1. The end of the connecting portion is semi-circular, and a hole is opened at the center of the connecting portion. After using a pin to pass through the mounting plate 1 and the connecting portion, the support rod 313 is rotatably connected to the mounting plate 1. The first auxiliary support member 311 and the second auxiliary support member 312 are mounting joints for connecting with the gas turbine engine.

[0060] As Figure 3As shown in the figure, this is an implementation manner of the overall engine test bench for the turboshaft engine provided in this embodiment. The first auxiliary support member 311 and the second auxiliary support member 312 are respectively rotatably connected to the support rod 313. At this time, the first auxiliary support member 311 and the second auxiliary support member 312 can rotate up and down around the support rod 313, and absorb the axial and radial thermal expansion amounts of the turboshaft engine through the small-angle swing of the support rod 313 back and forth. In addition, as an alternative implementation manner, the first auxiliary support member 311, the second auxiliary support member 312 and the support rod 313 are connected through a spherical plain bearing.

[0061] As Figure 4 shown in the figure, this is an implementation manner of the overall engine test bench for the turboshaft engine provided in this embodiment. A transverse guide rail 411 is provided on the air intake duct mounting bracket 4, and a longitudinal guide rail 412 is slidably provided on the transverse guide rail 411. The mounting bracket 5 is slidably provided on the longitudinal guide rail 412, so that the mounting bracket 5 can move along the width and length directions. In addition, as an alternative implementation manner, a cylinder can be provided on the air intake duct mounting bracket 4 to push the longitudinal guide rail 412 to move.

[0062] Specifically, there are two transverse guide rails 411, and the two transverse guide rails 411 are arranged along the length direction of the air intake duct mounting bracket 4. A plate is provided below the longitudinal guide rail 412, and a slider slidably connected to the transverse guide rail 411 is provided below the plate. The longitudinal guide rail 412 is arranged along the width direction of the air intake duct mounting bracket 4 above the plate, and the mounting bracket 5 slides on the longitudinal guide rail 412.

[0063] As Figure 4 shown in the figure, this is an implementation manner of the overall engine test bench for the turboshaft engine provided in this embodiment. It further includes: a height adjustment rod 413. The mounting bracket 5 is connected to the longitudinal guide rail 412 through the height adjustment rod 413. The height adjustment rod 413 can adjust the height of the mounting bracket 5, so as to better abut against the air intake duct, providing better support. And when the air intake duct needs to be disassembled, the mounting bracket 5 is moved downward through the height adjustment rod 413, which is more convenient for the disassembly of the air intake duct. In addition, as an alternative implementation manner, the height adjustment rod 413 can be not provided, and the mounting bracket 5 can still support the air intake duct.

[0064] As Figure 4As shown in the figure, this is an implementation of the overall engine test bench for a turboshaft engine provided by this embodiment. The height adjustment rod 413 includes: a fixed rod 414 fixedly connected to the longitudinal guide rail 412 and a rotating rod 415 threadedly connected to the fixed rod 414. A hexagonal structure for screwing is fixedly provided on the outer end face of the rotating rod 415, and the top end of the rotating rod 415 is rotatably connected to the mounting bracket 5. By screwing the hexagonal structure on the rotating rod 415, the height of the rotating rod 415 is adjusted, thereby realizing the height adjustment of the mounting bracket 5 so as to support the mounting bracket 5 on the air inlet duct. Additionally, as an alternative implementation, the height adjustment rod 413 uses a cylinder or an oil cylinder.

[0065] Installation method of the overall engine test bench for a turboshaft engine: A main fulcrum mounting bracket 2 is provided at one end of the mounting plate 1, and an air inlet duct mounting bracket 4 is provided at the other end. An auxiliary fulcrum mounting bracket 3 is provided near the air inlet duct mounting bracket 4. When the first turboshaft engine is installed on the overall engine test bench for a turboshaft engine, it is fixed by the first main support member 211, the third main support member 213, and the first auxiliary support member 311; for the second turboshaft engine, it is fixed by the second main support member 212, the fourth main support member 214, and the second auxiliary support member 312. During fixation, the support section 222 is fixedly connected to the mounting section of the engine. For the support of the air inlet duct of the engine, the movement of the mounting bracket 5 on the transverse guide rail 411 and the longitudinal guide rail 412 is used to support the air inlet ducts of the first turboshaft engine and the second turboshaft engine. At the same time, the better support efficiency of the mounting bracket 5 for the air inlet duct can be achieved by adjusting the height adjustment rod 413. The first main support member 211, the second main support member 212, the third main support member 213, and the fourth main support member 214 all include a connecting shaft 221 and a support section 222. The support section 222 is the engine mounting section, and it is connected to the mounting surface of the engine through the support section 222. Among them, the connecting shafts 221 of the third main support member 213 and the fourth main support member 214 are perpendicularly arranged with respect to the support section 222, and the connecting shafts 221 of the first main support member 211 and the second main support member 212 are horizontally arranged with respect to the support section 222. The mounting surfaces of the third main support member 213 and the fourth main support member 214 are lower than the mounting surfaces of the first main support member 211 and the second main support member 212, so that the connecting shafts 221 of the third main support member 213 and the fourth main support member 214 can rotate on the main fulcrum mounting bracket 2, and their axial locking and fixing or unlocking are carried out through the mounting locking nut 215. The auxiliary fulcrum mounting bracket 3 includes: a first auxiliary support member 311 and a second auxiliary support member 312, both of which are rotatably connected to the support rod 313, and the support rod 313 is also rotatably connected to the mounting plate 1. The lower end surface of the mounting bracket 5 is rotatably connected to the rotating rod 415, and the rotating rod 415 is threadedly connected to the fixed rod 414. The fixed rod 414 slides on the longitudinal slide rail, and the longitudinal slide rail slides on the transverse slide rail.

[0066] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A whole-engine test bench for a turboshaft engine, characterized in that, Comprising: An installation plate (1), on which there are provided: a main fulcrum mounting bracket (2), an auxiliary fulcrum mounting bracket (3), and an air intake duct mounting bracket (4); A main support group for supporting the intermediate reduction gear of a turboshaft engine is detachably mounted on the main fulcrum mounting bracket (2); An auxiliary support group for supporting the fuselage of a turboshaft engine is detachably mounted on the auxiliary fulcrum mounting bracket (3); The air intake duct mounting bracket (4) has a mounting bracket (5) for supporting the air intake duct of a turboshaft engine, and the mounting bracket (5) can slide longitudinally and transversely on the air intake duct mounting bracket (4). The main support group includes a first main support member (211), a second main support member (212), a third main support member (213), and a fourth main support member (214). The first main support member (211) and the second main support member (212) are located outside the third main support member (213) and the fourth main support member (214); The first turboshaft engine in a set of symmetrically mounted turboshaft engines is supported by the first main support member (211) and the third main support member (213), and the second turboshaft engine cooperating with the first turboshaft engine is supported by the second main support member (212) and the fourth main support member (214).

2. The full-engine test stand for a turboshaft engine according to claim 1, characterized in that, The third main support member (213) and the fourth main support member (214) are respectively rotatably mounted on the main fulcrum mounting bracket (2) through a connecting shaft (221). The third main support member (213) and the fourth main support member (214) respectively have support segments (222) extending in a direction perpendicular to the connecting shaft (221). By rotation, the support segments (222) of the third main support member (213) and the fourth main support member (214) can face upward or downward.

3. The whole-engine test bench for a turboshaft engine according to claim 2, characterized in that, A mounting seat (6) is detachably provided on the main fulcrum mounting bracket (2), and the connecting shaft (221) is connected to the main fulcrum mounting bracket (2) through the mounting seat (6).

4. The whole-engine test bench for a turboshaft engine according to claim 3, characterized in that The mounting seat (6) is L-shaped and includes a horizontal plate (611) connected to the main fulcrum mounting bracket (2) and a vertical plate (612) perpendicular to the horizontal plate (611). The connecting shaft (221) is mounted on the vertical plate (612).

5. The whole-engine test bench for a turboshaft engine according to claim 3, characterized in that, A locking nut (215) is provided on the connecting shaft (221), and the connecting shaft (221) can be axially locked or unlocked with the mounting seat (6) through the locking nut (215).

6. The engine test stand for a turboshaft engine according to claim 5, wherein, The connecting shaft (221) is connected to the mounting seat (6) through a spherical plain bearing, and the connecting shaft (221) can swing or conically swing about its axis through the spherical plain bearing.

7. The gas turbine engine full-load test stand according to claim 1, characterized in that, The mounting surfaces of the first main support member (211) and the second main support member (212) on the main fulcrum mounting bracket (2) are higher than the mounting surfaces of the third main support member (213) and the fourth main support member (214) on the main fulcrum mounting bracket (2).

8. The whole-engine test bench for a turboshaft engine according to claim 7, characterized in that, The first main support member (211), the second main support member (212), the third main support member (213), and the fourth main support member (214) are all installed to extend towards the center direction.

9. The full-engine test stand for a turboshaft engine according to claim 1, wherein, The auxiliary support group includes: a first auxiliary support member (311) and a second auxiliary support member (312) that are spaced apart in the width direction. The first auxiliary support member (311) and the second auxiliary support member (312) are respectively connected to a support rod (313), and the bottom end of the support rod (313) is rotatably connected to the mounting plate (1).

10. The whole-engine test bench for a turboshaft engine according to claim 9, characterized in that, The first auxiliary support member (311) and the second auxiliary support member (312) are respectively rotatably connected to the support rod (313).

11. The whole-engine test bench for a turboshaft engine according to any one of claims 1-10, characterized in that, A transverse guide rail (411) is provided on the air inlet duct mounting bracket (4), and a longitudinal guide rail (412) is slidably arranged on the transverse guide rail (411), and the mounting bracket (5) is slidably arranged on the longitudinal guide rail (412).

12. The turboprop engine full-load test bench according to claim 11, characterized in that, It further includes: a height adjustment rod (413). The mounting bracket (5) is connected to the longitudinal guide rail (412) through the height adjustment rod (413), and the height adjustment rod (413) can adjust the height of the mounting bracket (5).

13. The whole-engine test bench for a turboshaft engine according to claim 12, characterized in that, The height adjustment rod (413) includes: a fixed rod (414) fixedly connected to the longitudinal guide rail (412) and a rotating rod (415) threadedly connected to the fixed rod (414). A hexagonal structure for screwing is fixedly arranged on the outer end surface of the rotating rod (415), and the top end of the rotating rod (415) is rotatably connected to the mounting bracket (5).

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