An air intake guide device and method for automatically lifting air intake guide vanes of a test bed

Abstract

The application belongs to the technical field of aero-engine test running, and discloses an air inlet guide device and method for automatically lifting air inlet guide vanes of a test running platform, which comprises a movable guide component, a fixed guide vane and a support frame; the movable guide component comprises movable guide vanes, a detachable intermediate transmission shaft, a turbine worm elevator, an electromagnetic brake and a speed reducer; a set of conical guide wheel sets are arranged at the two ends of each movable guide vane, and the conical guide wheel sets are installed in guide grooves of the support frame; the two ends of the fixed guide vane are fixedly connected with the support frame through angle steels; the turbine worm elevator 13 is fixed on a support seat below the support frame; the electromagnetic brake 14 and the speed reducer 15 are respectively installed at the non-driving end and the driving end of the turbine worm elevator 13 and are fixedly connected through threaded holes on the turbine worm elevator, and the device has the advantages of higher efficiency, reliability and safety.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine test technology, and particularly relates to an air intake guide device and method for automatic lifting and lowering of air intake guide vanes on a test stand. Background Technology

[0002] In the field of aero-engine testing, the design of the inlet guide vanes of the inlet guide device is crucial to ensuring a uniform aerodynamic flow field during engine testing. However, in the design of test benches where engines are transported in and out of the test workshop by ground transport vehicles, the transport vehicle and engine need to pass through the inlet guide device to reach the test workshop. This necessitates the design of a movable guide vane in the middle of the inlet guide device. This movable guide vane rises to provide the transport vehicle and engine with sufficient height and width space for entry and exit. Traditional movable guide vane lifting mechanisms use hand cranks. Manual adjustment is not only time-consuming and labor-intensive, but also presents significant difficulties for situations involving heavy lifting, and poses certain safety hazards. Therefore, this invention aims to provide an automatically lifting mechanism for the inlet guide vanes of the test bench inlet guide device to solve the problems and defects existing in this field.

[0003] Currently, the traditional design of air intake guide vanes in test benches typically employs a manual lifting mechanism. However, this design has certain drawbacks, such as requiring significant manpower, difficulty in manual cranking when lifting heavy loads, and inconvenience in adjustment. Furthermore, the reliability and stability of manual lifting cannot be guaranteed.

[0004] Existing technologies have several problems and drawbacks, such as time-consuming and labor-intensive manual adjustments, significant safety hazards, and unreliable reliability and stability. These issues limit the application range and performance of the air intake guide vanes in the test bench air intake guide device, necessitating a more efficient, reliable, and safe design solution. Summary of the Invention

[0005] The technical problem solved by this invention: This invention proposes an automatic lifting and lowering air intake guide vane device and method for a test bench. Through worm gear transmission, quick-release and quick-installation structure, electromagnetic brake, and other technical means, it solves the following technical problems: Traditional test bench air intake guide vane designs suffer from time-consuming and labor-intensive manual adjustments, and significant safety hazards; the reliability and stability of manual lifting mechanisms cannot be guaranteed; the application range and performance of the test bench air intake guide vanes are limited; this invention offers advantages of greater efficiency, reliability, and safety.

[0006] The present invention is implemented using the following technical solution.

[0007] In a first aspect, the present invention provides an air intake guide device for automatic lifting and lowering of air intake guide vanes on a test bench, the air intake guide device comprising: a movable guide component 1, a fixed guide vane 2, and a support frame 3;

[0008] The mobile flow guide assembly 1 includes: a movable flow guide plate 11, a middle detachable drive shaft 12, a worm gear lift 13, an electromagnetic brake 14, and a geared motor 15.

[0009] The support frame consists of four sets of support sub-frames, referred to as the first support sub-frame, the second support sub-frame, the third support sub-frame, and the fourth support sub-frame. Fixed guide vanes are connected between the first and second support sub-frames, movable guide vanes are connected between the second and third support sub-frames, and fixed guide vanes are connected between the third and fourth support sub-frames, thus forming a structure with fixed guide vanes on both sides and movable guide vanes in the middle.

[0010] The movable guide vane 11 has a set of conical guide wheels at each end, and the conical guide wheels are installed in the guide groove of the support frame; the fixed guide vane has mounting angle steel at both ends, and the mounting angle steel is fixedly connected to the support frame.

[0011] The worm gear jack 13 is fixed on a support base below the support frame;

[0012] The electromagnetic brake 14 and the geared motor 15 are respectively installed on the non-driving end and the driving end of the worm gear jack 13, and are fixedly connected through the threaded holes on the worm gear jack.

[0013] Furthermore, each support subframe consists of a base plate, diagonal bracing, rectangular steel pipe, and small steel supports; the two base plates are connected at one end and vertically fixed to the ground, the diagonal bracing is distributed between the two base plates, and the two ends of the rectangular steel pipe are respectively fixed to the other ends of the two base plates, so that the two base plates and the rectangular steel pipe form a triangular fixing structure, and multiple small steel supports are arranged inside the rectangular steel pipe.

[0014] Furthermore, the movable guide vane is composed of an arc-shaped guide plate and reinforcing ribs. The arc-shaped guide plate is made of rolled steel plate, and conical guide wheels are installed at both ends of the movable guide vane.

[0015] Furthermore, the fixed guide plate is arc-shaped, made of rolled steel plate, and has mounting holes at both ends for mounting on the angle steel of the support frame.

[0016] Furthermore, the intermediate detachable drive shaft 12 consists of two shafts, one end of which is fixedly connected to the second support subframe and the third support subframe, respectively. The two shafts are connected by a single and double lug structure via pins.

[0017] Furthermore, the lower parts of both ends of the movable guide vane 11 are connected to the transmission screw of the worm gear jack via the screw nut of the worm gear jack; when the worm gear jack is working, the transmission screw rotates while the screw nut does not rotate, so the screw nut rises and falls with the movable guide vane 11.

[0018] Furthermore, the device also includes positioning blocks disposed on the second support sub-frame and the third support sub-frame. The positioning blocks are used to support and limit the movable guide vane after it has descended to the designated position. The positioning blocks are configured such that the height of the positioning blocks themselves is smaller as the height of the positioning blocks is set, so as not to affect the upward movement of the movable guide vane.

[0019] Furthermore, the intake airflow guiding device is located at the lower part of the intake tower and supported on the ground. The engine and engine transport trolley can be transported to the test workshop through the gate of the test workshop. After the movable guide vane of the intake airflow guiding device rises, the transport trolley can transport the engine to the test workshop. After the movable guide vane of the intake airflow guiding device descends into place, the engine can be tested. During the test, the movable guide vane and the fixed guide vane of the intake airflow guiding device adjust the intake airflow from the vertical direction to the horizontal direction.

[0020] Furthermore, after the movable guide vane of the intake guide device rises, the transport trolley can transport the engine to the test workshop. Specifically, after the movable guide vane rises, the single and double ear structure in the middle of the detachable drive shaft 12 is disassembled, and the two shafts are rotated to both sides to make room for the engine transport vehicle and the engine to enter and exit the test workshop.

[0021] Secondly, the present invention provides an air intake guiding method for automatic lifting and lowering of air intake guide vanes on a test bench, the method being applied to the air intake guiding device described in technical solution one, the method comprising:

[0022] The geared motor drives the worm gear lift to rise, which in turn causes the movable guide vanes to rise.

[0023] Disassemble the detachable drive shaft 12 in the middle to make room for the engine transport vehicle and the engine to enter and exit the test workshop; thus, the engine transport vehicle and the engine can enter the test workshop.

[0024] The geared motor drives the worm gear lift to descend, which in turn causes the movable guide vane to descend as well.

[0025] During the descent of the movable guide vane, positioning blocks ensure that the movable guide vane descends into place.

[0026] During engine testing, the intake airflow is adjusted from a vertical to a horizontal direction by the movable and fixed guide vanes of the intake airflow guide device.

[0027] Compared with existing technologies, the beneficial effects of this technical solution are as follows: 1. It enables the raising and lowering of the movable guide vane in the middle section, facilitating engine entry and exit from the test workshop and ensuring uniform aerodynamic flow during engine testing; 2. The quick-release and quick-installation structure achieves high work efficiency; 3. The transmission uses a worm gear drive and is equipped with a geared motor drive, saving manpower; 4. To ensure personnel safety, the transmission uses a worm gear drive with a self-locking function, and an electromagnetic brake is designed on the other side of the main transmission; 5. Conical guide wheels with rims are provided on both sides of the movable guide vane, allowing the guide wheels to roll smoothly within the grooved guide slots and preventing lateral movement. Compared with traditional manual hand-cranked mechanisms, this invention uses an automatic lifting mechanism, making operation more convenient and faster, reducing manpower input. Simultaneously, the worm gear drive provides higher stability and reliability. This invention also provides conical guide wheels with rims on both sides of the movable guide vane, preventing lateral movement and improving the safety and stability of the test stand. In summary, this invention has higher efficiency, higher reliability, higher security and better stability compared with the prior art, and has broad application prospects and market value. Attached Figure Description

[0028] Figure 1 Front view (a), left view (b), and top view (c) of the air intake guide device provided in the embodiments of the present invention;

[0029] Figure 2 A schematic diagram of the support frame provided in an embodiment of the present invention;

[0030] Figure 3 The front view (a), left view (b), and top view (c) of the mobile flow guiding component provided in the embodiments of the present invention;

[0031] Figure 4 This is a schematic diagram illustrating the structure of the movable flow guide plate provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram illustrating the structure of the fixed guide vane provided in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the movable guide vane in raised (a) and lowered (b) states provided in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the conical guide wheel provided in an embodiment of the present invention. Detailed Implementation

[0035] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] This invention provides an automatic lifting and lowering air intake guide vane for a test bench. The air intake guide vane is located at the lower part of the intake tower and supported on the ground below. The engine and engine transport trolley can pass through the test bench door. After the movable guide vane of the air intake guide vane rises, the transport trolley can transport the engine to the test bench. After the movable guide vane of the air intake guide vane descends to its position, the engine can be tested. During the test, the movable and fixed guide vanes of the air intake guide vane adjust the intake airflow from a vertical direction to a horizontal direction.

[0037] Specifically, such as Figure 1 As shown, the air intake guide device includes: a movable guide assembly 1, a fixed guide vane 2, and a support frame 3;

[0038] like Figure 3 As shown, the movable guide assembly 1 includes: a movable guide vane 11, a detachable intermediate drive shaft 12, a worm gear lift 13, an electromagnetic brake 14, and a geared motor 15;

[0039] The support frame consists of four sets of support sub-frames, referred to as the first support sub-frame, the second support sub-frame, the third support sub-frame, and the fourth support sub-frame. Fixed guide vanes are connected between the first and second support sub-frames, movable guide vanes are connected between the second and third support sub-frames, and fixed guide vanes are connected between the third and fourth support sub-frames, thus forming a structure with fixed guide vanes on both sides and movable guide vanes in the middle.

[0040] The movable guide vane 11 has a set of conical guide wheels at each end, and the conical guide wheels are installed in the guide grooves of the support frame; the fixed guide vane has mounting angle steel at both ends, and the mounting angle steel is fixedly connected to the support frame; such as Figure 7 As shown, the tapered guide wheel assembly consists of guide wheels, pins, bearings, roller mounting plates, nuts, etc.

[0041] The worm gear jack 13 is fixed on a support base below the support frame;

[0042] The electromagnetic brake 14 and the geared motor 15 are respectively installed on the non-driving end and the driving end of the worm gear jack 13, and are fixedly connected through the threaded holes on the worm gear jack.

[0043] like Figure 2 As shown, each support subframe consists of a base plate, diagonal bracing, rectangular steel pipe, and small steel supports; the two base plates are connected at one end and vertically fixed to the ground, the diagonal bracing is distributed between the two base plates, and the two ends of the rectangular steel pipe are respectively fixed to the other ends of the two base plates, so that the two base plates and the rectangular steel pipe form a triangular fixed structure, and multiple small steel supports are arranged inside the rectangular steel pipe.

[0044] like Figure 4 As shown, the movable guide vane consists of an arc-shaped guide plate and reinforcing ribs. The arc-shaped guide plate is made of rolled steel plate, and tapered guide wheels are installed at both ends of the movable guide vane.

[0045] like Figure 5 As shown, the fixed guide vane is arc-shaped, made of rolled steel plate, and has mounting holes at both ends, and is installed on the angle steel of the support frame.

[0046] The detachable drive shaft 12 consists of two shafts, one end of which is fixedly connected to the second support subframe and the third support subframe, respectively. The two shafts are connected by a single and double lug structure and a pin.

[0047] The lower parts of both ends of the movable guide vane 11 are connected to the transmission screw of the worm gear jack via the screw nut of the worm gear jack. When the worm gear jack is working, the transmission screw rotates while the screw nut does not rotate, so the screw nut rises and falls with the movable guide vane 11.

[0048] The device also includes positioning blocks disposed on the second support subframe and the third support subframe. The positioning blocks are used to support and limit the movable guide vane after it has descended to the designated position. The positioning blocks are configured such that the height of the positioning blocks themselves is smaller as the height of the positioning blocks is set, so as not to affect the upward movement of the movable guide vane.

[0049] The intake airflow guiding device is located at the bottom of the intake tower and supported on the ground. The engine and engine transport trolley can be transported to the test workshop through the gate of the test workshop. After the movable guide vane of the intake airflow guiding device rises, the transport trolley can transport the engine to the test workshop. After the movable guide vane of the intake airflow guiding device descends into place, the engine can be tested. During the test, the movable guide vane and the fixed guide vane of the intake airflow guiding device adjust the intake airflow from the vertical direction to the horizontal direction.

[0050] like Figure 6 The diagram shown illustrates the raised and lowered states of the movable guide vane.

[0051] After the movable guide vane of the intake guide device rises, the transport trolley can transport the engine to the test workshop. Specifically, after the movable guide vane rises, the single and double ear structure in the middle of the detachable drive shaft 12 is disassembled, and the two shafts are rotated to both sides to make room for the engine transport vehicle and the engine to enter and exit the test workshop.

[0052] This invention also provides an air intake guide method for automatic raising and lowering of the air intake guide vanes on a test bench, the method comprising:

[0053] The geared motor drives the worm gear lift to rise, which in turn causes the movable guide vanes to rise.

[0054] Disassemble the detachable drive shaft 12 in the middle to make room for the engine transport vehicle and the engine to enter and exit the test workshop; thus, the engine transport vehicle and the engine can enter the test workshop.

[0055] The geared motor drives the worm gear lift to descend, which in turn causes the movable guide vane to descend as well.

[0056] During the descent of the movable guide vane, positioning blocks ensure that the movable guide vane descends into place.

[0057] During engine testing, the intake airflow is adjusted from a vertical to a horizontal direction by the movable and fixed guide vanes of the intake airflow guide device.

[0058] During the upward movement of the movable guide vanes, the uppermost guide vane touches the upper part of the support frame to form a switch, the main drive geared motor stops and brakes, and the electromagnetic brake brakes. The movable guide vanes descend by relying on the stop blocks to ensure that each guide vane descends to its position. The lowermost guide vane reaches its position by touching the descent limit switch installed on the support frame, the main drive geared motor stops and brakes, and the electromagnetic brake brakes.

[0059] This invention provides an automatic lifting mechanism for the air intake guide vanes of a test stand, comprising a frame-supported guide device, a worm gear transmission structure, a quick-release and quick-install structure, an electromagnetic brake, and an electronic control system.

[0060] The airflow guiding device includes movable and fixed airflow guide vanes. The movable airflow guide vanes are arc-shaped, and a liftable movable airflow guide vane is located in the center of the device. The raising and lowering of the movable airflow guide vane controls the airflow adjustment during the transport vehicle and engine's entry and exit from the test workshop and during engine testing. The fixed airflow guide vane is also arc-shaped. Both the movable and fixed airflow guide vanes are used to adjust the airflow direction and ensure uniform airflow during engine testing. The transmission adopts a worm gear transmission structure, which is self-locking and less prone to failure. A geared motor is also equipped to drive the transmission, saving manpower. Furthermore, an electromagnetic brake is designed on the other side of the main transmission to ensure personnel safety. The intermediate drive shaft adopts a quick-release and quick-install structure, making maintenance of the mechanism more convenient and efficient.

[0061] During the raising and lowering of the air intake guide vanes on the test stand, the raising and lowering of the vanes is controlled by an electronic control system, making the raising and lowering process more stable and reliable. To ensure smooth transmission, conical guide wheels with rims are provided on both sides of the movable guide vanes. The guide wheels can roll smoothly within the grooved guide grooves and can prevent lateral movement.

[0062] In this embodiment, the aforementioned technical means were employed to achieve automatic raising and lowering of the test bench's air intake guide vanes, solving the problems of time-consuming and labor-intensive manual adjustments and significant safety hazards inherent in traditional test bench air intake guide vane designs. Furthermore, this embodiment also improves the application range and performance of the test bench's air intake guide vanes, offering advantages such as higher efficiency, reliability, and safety.

[0063] To achieve automatic raising and lowering of the air intake guide vanes on the test stand, this technical solution mainly adopts the following technical means:

[0064] 1. A frame-supported airflow guiding device is adopted, which includes movable and fixed airflow guiding vanes. The movable airflow guiding vanes are arc-shaped, with a liftable section in the center. The raising and lowering of these vanes adjusts the airflow during the transport vehicle's and engine's entry and exit from the test workshop and during engine testing. The fixed airflow guiding vanes are also arc-shaped. Both the movable and fixed airflow guiding vanes are used to adjust the airflow direction and ensure uniform airflow during engine testing.

[0065] 2. The transmission adopts a worm gear drive structure, which has a self-locking function and is not prone to failure. During transmission, a geared motor is also provided to save manpower. Furthermore, an electromagnetic brake is designed on the other side of the main drive to ensure personnel safety when disassembling the central pin connection of the drive shaft.

[0066] 3. To ensure smooth transmission, tapered guide wheels with rims are provided on both sides of the movable guide vane. The guide wheels can roll smoothly in the grooved guide groove and prevent lateral movement.

[0067] 4. The intermediate drive shaft adopts a quick-release and quick-install structure, making the mechanism more convenient and efficient.

[0068] 5. During the raising and lowering of the air intake guide vanes on the test bench, the raising and lowering of the guide vanes is controlled by the electronic control system, making the raising and lowering process more stable and reliable.

[0069] In summary, through the aforementioned technical means, this technical solution achieves automatic raising and lowering of the test bench's air intake guide vanes, solving the problems of time-consuming and labor-intensive manual adjustments and significant safety hazards inherent in traditional test bench air intake guide vane designs. Furthermore, this technical solution also improves the performance of the test bench's air intake guide vanes, offering advantages such as higher efficiency, reliability, and safety.

Claims

1. An air intake guide device for automatic lifting and lowering of air intake guide vanes on a test bench, characterized in that, The air intake guide device includes: a movable guide component (1), a fixed guide vane (2), and a support frame (3); The movable guide assembly (1) includes: a movable guide plate (11), a middle detachable drive shaft (12), a worm gear lift (13), an electromagnetic brake (14), and a geared motor (15). The support frame consists of four sets of support sub-frames, referred to as the first support sub-frame, the second support sub-frame, the third support sub-frame, and the fourth support sub-frame. Fixed guide vanes are connected between the first and second support sub-frames, movable guide vanes are connected between the second and third support sub-frames, and fixed guide vanes are connected between the third and fourth support sub-frames, thus forming a structure with fixed guide vanes on both sides and movable guide vanes in the middle. A set of conical guide wheels is provided at each end of the movable guide vane (11), and the conical guide wheels are installed in the guide groove of the support frame; the fixed guide vane is provided at both ends with mounting angle steel, and the mounting angle steel is fixedly connected to the support frame; The worm gear jack (13) is fixed on a support base below the support frame; The electromagnetic brake (14) and the geared motor (15) are respectively installed on the non-driving end and the driving end of the worm gear jack (13) and are fixedly connected through the threaded hole on the worm gear jack. The movable guide vane consists of an arc-shaped guide plate and reinforcing ribs. The arc-shaped guide plate is made of rolled steel plate, and conical guide wheels are installed at both ends of the movable guide vane. The lower parts of both ends of the movable guide vane (11) are connected to the transmission screw of the worm gear jack via the screw nut of the worm gear jack. When the worm gear jack is working, the transmission screw rotates while the screw nut does not rotate, so the screw nut rises and falls with the movable guide vane (11).

2. The air intake guide device for automatic lifting and lowering of air intake guide vanes on a test bench according to claim 1, characterized in that, Each support subframe consists of a base plate, diagonal bracing, rectangular steel pipe, and small steel supports. The two base plates are connected at one end and fixed vertically to the ground. The diagonal bracing is distributed between the two base plates. The two ends of the rectangular steel pipe are fixed to the other ends of the two base plates, thus forming a triangular fixing structure with the two base plates and the rectangular steel pipe. Multiple small steel supports are arranged inside the rectangular steel pipe.

3. The air intake guide device for automatic lifting and lowering of the air intake guide vanes on a test bench according to claim 2, characterized in that, The fixed guide vane is arc-shaped, made of rolled steel plate, and has mounting holes at both ends for mounting on the angle steel of the supporting frame.

4. The air intake guide device for automatic lifting and lowering of the air intake guide vanes on a test bench according to claim 1, characterized in that, The detachable transmission shaft (12) consists of two shafts, one end of which is fixedly connected to the second support subframe and the third support subframe, respectively. The two shafts are connected by a single and double ear structure and a pin.

5. The air intake guide device for automatic lifting and lowering of the air intake guide vanes on a test bench according to claim 1, characterized in that, The device also includes positioning blocks disposed on the second support subframe and the third support subframe. The positioning blocks are used to support and limit the movable guide vane after it has descended to the designated position. The positioning blocks are configured such that the height of the positioning blocks themselves is smaller as the height of the positioning blocks is set, so as not to affect the upward movement of the movable guide vane.

6. The air intake guide device for automatic lifting and lowering of the air intake guide vanes on a test bench according to claim 1, characterized in that, The intake airflow guide device is located at the bottom of the intake tower and supported on the ground. The engine and engine transport trolley can be transported to the test workshop through the gate of the test workshop. After the movable guide plate of the intake airflow guide device rises, the transport trolley can transport the engine to the test workshop. After the movable guide plate of the intake airflow guide device descends into place, the engine can be tested. During the test, the movable guide plate and the fixed guide plate of the intake airflow guide device adjust the intake airflow from the vertical direction to the horizontal direction.

7. The air intake guide device for automatic lifting and lowering of air intake guide vanes on a test bench according to claim 5, characterized in that, After the movable guide vane of the intake guide device rises, the transport trolley can transport the engine to the test workshop. Specifically, after the movable guide vane rises, the single and double ear structure in the middle of the middle detachable drive shaft (12) is disassembled, and the two shafts are rotated to both sides to make room for the engine transport vehicle and the engine to enter and exit the test workshop.

8. A method for automatically raising and lowering the air intake guide vanes on a test bench, characterized in that, The method is applied to the air intake guide device as described in any one of claims 1-7, and the method includes: The geared motor drives the worm gear lift to rise, which in turn causes the movable guide vanes to rise. Remove the detachable drive shaft (12) in the middle to make room for the engine transport vehicle and the engine to enter and exit the test workshop; thus the engine transport vehicle and the engine can enter the test workshop. The geared motor drives the worm gear lift to descend, which in turn causes the movable guide vane to descend as well. During the descent of the movable guide vane, positioning blocks ensure that the movable guide vane descends into place. During engine testing, the intake airflow is adjusted from a vertical to a horizontal direction by the movable and fixed guide vanes of the intake airflow guide device.

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