Steel cable system for turboshaft engine test bed

Abstract

The utility model discloses a steel cable system for a turboshaft engine test bed, and relates to the technical field of turboshaft engines. The device comprises a steel cable, a rigid protective sleeve and a fixing device, the outer ring of the steel cable is in threaded connection with the rigid protective sleeve; a first universal ball head is arranged in a connector of the steel cable; a second universal ball head is arranged at the threaded connection part of the rigid protective sleeve and the steel cable; the first universal ball head is connected with an engine fuel regulator; the second universal ball head is connected with the fixing device; the fixing device is installed on an engine fuel regulator. According to the utility model, the steel cable system is fixedly supported, so that the control handle is smooth and not easy to block; a worker can accurately control the engine to complete testing, and meanwhile the service life of the steel cable is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of turboshaft engines, and more specifically, it is a cable system for a turboshaft engine test bench. Background Technique

[0002] The function of the cable system of the test bench is to enable workers to control the engine by operating the handle in the control room; through two cables, the power control lever and the governor control lever on the engine fuel regulator are respectively controlled and connected to the handle in the control room; when the handle is operated, it is transmitted to the throttle rocker arm of the oil pump regulator on the engine through the cable system to control the size of the throttle switch and the supply and cut-off of the engine fuel; when the throttle operating handle moves forward, the fuel increasing cable is tensioned, and the throttle moves in the direction of increasing fuel supply; when the throttle operating handle moves backward, the fuel decreasing cable is tensioned, and the throttle moves in the direction of decreasing fuel quantity.

[0003] The existing throttle cables are relatively simple in design. Due to differences in engine models, cable installation adaptation, etc., there is no fixed support for the cables, and the structure connecting the cables is unreasonable, which easily leads to the situation where the cable movement is blocked. This makes it difficult for workers to accurately control the engine to complete the test, and at the same time, it will also shorten the service life of the cable.

[0004] Therefore, it is necessary to develop a cable system that provides fixed support for the cable system, enables the operating handle to move smoothly and is not prone to jamming. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the above background technique, and provide a cable system for a turboshaft engine test bench.

[0006] In order to achieve the above purpose, the technical solution of the utility model is: a cable system for a turboshaft engine test bench, characterized in that: it includes a cable, a rigid protective sleeve and a fixing device;

[0007] The outer ring of the cable is threadedly connected to the rigid protective sleeve, and a first universal ball head is arranged inside the joint of the cable;

[0008] The rigid protective sleeve is provided with a second universal ball head at its threaded connection with the cable;

[0009] The first universal ball head is connected to the engine fuel regulator through a first connecting rod;

[0010] The second universal ball head is connected to the fixing device through a second connecting rod;

[0011] The fixing device is installed on the engine fuel regulator.

[0012] In the above technical solution, the fixing device includes a mounting plate installed on the engine fuel regulator, an adjusting bracket connected to the mounting plate, and a valve bracket detachably connected to the adjusting bracket; the second connecting rod is detachably connected to the valve bracket.

[0013] In the above technical solution, a plurality of adjusting holes are evenly spaced on the adjusting bracket, and the valve bracket is detachably connected to the adjusting holes.

[0014] In the above technical solution, the installation angle between the valve bracket and the adjusting hole is adjustable.

[0015] In the above technical solution, an installation groove is provided on the valve bracket, and the second connecting rod passes through the installation groove and is fixed to the installation groove by two nuts on the top and bottom surfaces of the installation groove.

[0016] Compared with the prior art, the present utility model has the following advantages:

[0017] 1) The present utility model fixes and supports the cable system, making the operating handle smooth and not easily stuck; enabling the operator to accurately control the engine to complete the test, and at the same time greatly improving the service life of the cable.

[0018] 2) The cable of the present utility model is a flexible cable. The flexible cable saves space. The flexible cable is connected to the rigid protective sleeve by a thread. The rigid protective sleeve provides sufficient supporting force for the flexible cable to prevent the flexible cable from bending and deforming when adjusting the engine fuel regulator, resulting in low force transmission efficiency and difficult operation.

[0019] 3) The present utility model is provided with a second universal ball head at the threaded connection and fixation of the rigid protective sleeve and the flexible cable. The rigid protective sleeve makes most of the force generated during the movement of the cable concentrated at the fixed point, and the second universal ball head can well relieve this resultant force, avoiding cable jamming, making the cable extend and retract more smoothly when pushing the power control rod and the governor control rod, and greatly improving the service life of the cable.

[0020] 4) A first universal ball head is arranged inside the joint of the cable of the present utility model. The first universal ball head is connected to the power control rod and the governor control rod through a first connecting rod, and can rotate flexibly when the cable extends and retracts, avoiding the cable movement being blocked, making the cable extend and retract more smoothly when pushing the power control rod and the governor control rod.

[0021] 5) A plurality of adjusting holes are evenly arranged on the adjusting bracket of the present utility model. The adjusting holes at different distances can be used for different models of engines; at the same time, by manually rotating the valve bracket, any angle can be adjusted during installation, enabling the cable to quickly and reliably adapt to the fuel regulators of various models of engines.

[0022] 6) A second connecting rod is provided on the second universal ball head of the utility model. The second connecting rod is fixed in the valve support by two nuts, and the installation is convenient and fast. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the utility model.

[0024] Figure 2 It is a front view of the utility model.

[0025] Figure 3 It is a schematic structural diagram of the steel cable and the rigid protective sleeve.

[0026] Among them, 1 - steel cable, 2 - rigid protective sleeve, 3 - fixing device, 31 - mounting plate, 32 - adjusting bracket, 321 - adjusting hole, 33 - valve support, 331 - mounting groove, 332 - nut, 41 - first universal ball head, 42 - second universal ball head, 51 - first connecting rod, 52 - second connecting rod. Specific Embodiments

[0027] The following will describe in detail the implementation of the utility model with reference to the drawings. However, they do not constitute a limitation to the utility model and are only for illustration purposes. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.

[0028] Referring to the drawings, it can be seen that a steel cable system for a turboshaft engine test stand includes a steel cable 1, a rigid protective sleeve 2, and a fixing device 3; the steel cable 1 is a flexible steel cable.

[0029] The outer ring of the steel cable 1 is threadedly connected to the rigid protective sleeve 2, and the joint of the steel cable 1 is connected to the first universal ball head 41.

[0030] The rigid protective sleeve 2 is provided with a second universal ball head 42 at its threaded connection with the steel cable 1.

[0031] The rigid protective sleeve 2 provides sufficient support force for the steel cable 1 to prevent the steel cable 1 from bending and deforming when adjusting the engine fuel regulator, resulting in low force transmission efficiency and difficult operation.

[0032] The rigid protective sleeve 2 makes most of the force generated during the movement of the steel cable 1 concentrated at the fixed point, and the second universal ball head 42 effectively removes the resultant force, enabling the steel cable 1 to stretch smoothly and not easily jam, greatly extending the service life of the steel cable 1.

[0033] The first universal ball head 41 is connected to the engine fuel regulator through the first connecting rod 51.

[0034] The second universal ball head 42 is connected to the fixing device 3 through the second connecting rod 52.

[0035] The fixing device 3 is mounted on the engine fuel regulator.

[0036] The fixing device 3 includes a mounting plate 31 mounted on the engine fuel regulator, an adjusting bracket 32 connected to the mounting plate 31, and a valve bracket 33 detachably connected to the adjusting bracket 32; the second connecting rod 52 is detachably connected to the valve bracket 33.

[0037] A plurality of adjusting holes 321 are uniformly spaced on the adjusting bracket 32, and the valve bracket 33 is detachably connected to the adjusting holes 321.

[0038] The mounting angle between the valve bracket 33 and the adjusting holes 321 is adjustable.

[0039] A mounting groove 331 is provided on the valve bracket 33, and the second connecting rod 52 passes through the mounting groove 331 and is fixed to the mounting groove 331 by two nuts 332 on the top and bottom surfaces of the mounting groove 331.

[0040] By the arrangement of the fixing device 3, the cable 1 can be quickly and reliably adapted to engine fuel regulators of various models.

[0041] In actual use, the control handle is connected to the power control rod and the governor control rod on the engine fuel regulator through two cables 1. By pushing and pulling the control handle, the two cables 1 are controlled to adjust the engine fuel regulator; the structure for connecting the cable 1 of the present utility model is reasonable. After connection, the control handle pulls smoothly and is not easily stuck, enabling the operator to accurately control the engine to complete the test, and at the same time greatly increasing the service life of the cable 1.

[0042] The installation method of the present utility model includes the following steps:

[0043] First, connect the first connecting rod 51 of the first universal ball head 41 on the cable 1 joint to the engine fuel regulator; install the second connecting rod 52 on the rigid protective sleeve 2 into the valve bracket 33, and install the valve bracket 33 into the appropriate adjusting hole 321 according to the distance adapted to engines of different models.

[0044] Other parts not described belong to the prior art.

Claims

1. A cable system for a turboprop engine test stand, characterized in that: It includes a steel cable (1), a rigid protective sleeve (2) and a fixing device (3); The outer circle of the steel cable (1) is threadedly connected to the rigid protective sleeve (2), and the joint of the steel cable (1) is connected to the first universal ball head (41); The rigid protective sleeve (2) is provided with a second universal ball head (42) at its threaded connection with the steel cable (1); The first universal ball head (41) is connected to the engine fuel regulator through a first connecting rod (51); The second universal ball head (42) is connected to the fixing device (3) through a second connecting rod (52); The fixing device (3) is installed on the engine fuel regulator.

2. The cable system for a turboshaft engine test stand according to claim 1, characterized in that: The fixing device (3) includes a mounting plate (31) installed on the engine fuel regulator, an adjusting bracket (32) connected to the mounting plate (31), and a valve bracket (33) detachably connected to the adjusting bracket (32); the second connecting rod (52) is detachably connected to the valve bracket (33).

3. A cable system for a turboprop engine test stand according to claim 2, characterized in that: A plurality of adjusting holes (321) are evenly spaced on the adjusting bracket (32), and the valve bracket (33) is detachably connected to the adjusting holes (321).

4. A cable system for a turboshaft engine test stand according to claim 3, characterized in that: The installation angle between the valve bracket (33) and the adjusting holes (321) is adjustable.

5. A cable system for a turboshaft engine test stand according to claim 2, characterized in that: An installation groove (331) is provided on the valve bracket (33), and the second connecting rod (52) passes through the installation groove (331) and is fixed to the installation groove (331) by two nuts (332) on the top and bottom surfaces of the installation groove (331).

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