KR101251948B1 - Device for rotation of liquid rocket engine - Google Patents

Abstract

The present invention relates to a liquid rocket engine rotating apparatus, and more particularly, to a liquid rocket engine rotating apparatus that allows the engine to rotate for the posture conversion of the engine required for transport, test, and inspection of the liquid rocket engine.
The liquid rocket engine rotating device according to the present invention includes an engine fixing ring; A lower frame for supporting the engine fixing ring; Characterized in that composed of a worm gear pack mounted on the lower frame.
The liquid rocket engine rotating apparatus according to the present invention does not lift the liquid rocket engine into the air, and can rotate the liquid rocket engine with only the force of an operator without the upper power such as a motor. In addition, by using a worm gear pack it is possible to generate a torque with a small force, the rotation axis is located in the center of gravity of the engine can minimize the amount of torque required.

Description

Liquid Rocket Engine Rotating Equipment {DEVICE FOR ROTATION OF LIQUID ROCKET ENGINE}

The present invention relates to a liquid rocket engine rotating apparatus, and more particularly, to a liquid rocket engine rotating apparatus that allows the engine to rotate for the posture conversion of the engine required for transport, test, and inspection of the liquid rocket engine.

In general, liquid rocket engines should be horizontal in order to carry out assembly and transport them mainly in a vertical state, and the engine should be horizontal for complete engine tightness test, engine alignment measurement, and projectile assembly after assembly is completed. In addition, the engine must be in a vertical state during environmental tests such as vibration testing of the engine.

The liquid rocket engine is a heavy product of more than 1 ton and its size is much larger than a general worker, so a separate device is required for operations such as rotating the engine for various purposes.

Hereinafter, referring to FIGS. 1 and 2, a conventional liquid rocket engine rotating apparatus will be described in detail.

 1 is a perspective view of a conventional liquid rocket engine rotating device, Figure 2 is an enlarged cross-sectional view taken along the line A-A of FIG.

As shown in Figs. 1 and 2, in the conventional liquid rocket engine rotating apparatus, pulleys 12 and 12 'are attached to both sides of the substrate 10, and the pulleys 12 and 12' have a rotating shaft. Both sides of the (14) can be rotated smoothly with the bearings (16, 16 ') respectively.

The pulleys 18 and 18 'are fixed to both sides of the rotary shaft 14 penetrating the pulley members 12 and 12', and the driven bevel gear 20 in the middle of the rotary shafts 14 and 14 '. The driven bevel gear 20 is connected to the drive motor 22 and is engaged with the drive bevel gear 24 corresponding to the output gear of the reduction gear group, which is omitted. 12 ') has holding pins 28 and 28' having holes 26 and 26 'fixed thereto, and the driving motor 22 controls the rotational direction of the driving motor 22 in the forward and reverse directions. The remote controller 30 is connected.

The conventional liquid rocket engine rotating device has a lower portion of the annular rope (32, 32 ') that is hooked to the pulley (18, 18') arranged on both sides of the substrate 10, the overhead crane is suspended on the hook (34). Lifting the hook 34 of the overhead crane while hanging on both sides of the large structure (S) raises the liquid rocket engine (not shown) from the floor of the workshop and lifts the liquid rocket engine to a suitable height for work. When the rotational direction of the drive motor 22 is rotated in the forward or reverse direction by the remote controller 30 in the locked state, that is, the liquid rocket engine is suspended, the drive bevel gear 24 connected to the drive motor 22 is engaged. Since the driven bevel gear 20 rotates the rotary shaft 14 in the forward and reverse directions, the pulleys 18 and 18 'fixed to the rotary shaft 14 rotate in the forward and reverse directions, and the pulleys 18 and 18' The liquid rocket engine connected by the annular rope (32, 32 ') Rotate in the reverse direction.

Therefore, the operator can select and rotate the liquid rocket engine to be suitable for working.

By the way, the conventional liquid rocket engine rotating device lifted the liquid rocket engine into the air and rotated in the air using a power unit, etc., but since the liquid rocket engine is a heavy product, there is a risk of falling on the floor during operation if used in the air. This was inherent.

In addition, since the work was moved while moving the location and various work tools of the crane, there was a problem that the work is very cumbersome, not only a lot of manpower, but also a lot of safety accidents occur.

Therefore, an object of the present invention is to lift the liquid rocket engine without lifting the liquid rocket engine to the air, without the upper power such as a motor, to solve the problems as described above, equipped with a worm gear pack It is an object to provide a liquid rocket engine rotating device.

The liquid rocket engine rotating device according to the present invention includes an engine fixing ring; A lower frame for supporting the engine fixing ring; Characterized in that composed of a worm gear pack mounted on the lower frame.

In addition, the engine fixing ring is fixed to the center of gravity ring fixed frame; An engine gimbal mount fixing frame mounted vertically to the fixing ring center of gravity fixing frame; An engine gimbal mount fixing plate mounted at an inner center of the engine gimbal mount fixing frame; It is characterized in that it is composed of a frame for fixing the center of gravity and the ring for fixing the center of gravity of the fixing ring weight center frame.

The lower frame may include a pair of lower frame vertical supports; A pair of anti-rotation process plates mounted on the pair of lower frame vertical supports and provided with a rotating shaft; A pair of lower frame horizontal supports connected to the pair of lower frame vertical supports and having an H shape; Located at the lower ends of the pair of lower frame horizontal support of the pair, characterized in that consisting of a pair of moving wheels and a fixing latch.

In addition, the worm gear pack includes a worm gear box containing a worm gear; A rotation handle connected to the worm gear of the worm gear box; A gear torque transmission shaft connected to the worm gear of the worm gear box and connected to the rotation shaft; The worm gear pack is characterized by consisting of a frame for attaching the worm gear pack for attaching to the lower frame.

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As described above, the liquid rocket engine rotating apparatus according to the present invention does not lift the liquid rocket engine into the air, and there is an advantage that the liquid rocket engine can be rotated only by the force of the operator without the upper power such as a motor.

In addition, by using a worm gear pack, it is possible to generate torque with a small force, there is an advantage that the size of the required torque can be minimized by placing the rotation axis in the center of gravity of the engine.

1 is a perspective view of a conventional liquid rocket engine rotating device.
2 is an enlarged cross-sectional view taken along line AA of FIG. 1;
3 and 4 are a perspective view of a liquid rocket engine rotating apparatus according to the present invention.
5 is a perspective view of the engine fixing ring of FIGS. 3 and 4.
6 is a perspective view of the hub frame of FIGS. 3 and 4;
7 is a perspective view of the worm gear pack of FIGS. 3 and 4.

Hereinafter, the liquid rocket engine rotating apparatus according to the present invention will be described in detail with reference to the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to a client's or operator's intention or custom. Therefore, the definition should be based on the contents throughout this specification.

Like numbers refer to like elements throughout the drawings.

3 and 4 are perspective views of the liquid rocket engine rotating apparatus according to the present invention, Figure 5 is a perspective view of the engine fixing ring of Figures 3 and 4, Figure 6 is a perspective view of the hub frame of Figures 3 and 4. 7 is a perspective view of the worm gear pack of FIGS. 3 and 4.

As shown in FIGS. 3 to 7, the liquid rocket engine rotating device 100 according to the present invention has a large engine fixing ring 50 (see FIG. 5), a lower frame 60 (see FIG. 6), a worm gear pack ( 70, see FIG. 7).

Here, the engine fixing ring 50 is the engine gimbal mount fixing frame 51, the engine gimbal mount fixing plate 52, the fixing ring center of gravity frame 53 and the fixing ring center of gravity fixing frame ( 54).

The lower frame 60 includes a pair of lower frame vertical supports 61, a pair of lower frame horizontal supports 62, a pair of anti-rotation fixing plates 63, two pairs of wheels for movement 64, It consists of two pairs of fixing latches 65.

The worm gear pack 70 is composed of a worm gear box 71, a handle 72 for rotation, a frame 73 for attaching a worm gear pack, a shaft 74 for gear torque transmission, and the worm gear pack 70 is a worm gear pack. It is fixed to the lower frame vertical support 61 of the lower frame 60 by the fixing frame 73 by the usual fixing means (for example, fixing bolts, fixing nuts).

Now, look at the configuration of the liquid rocket engine rotation apparatus 100 according to the present invention in more detail,

The engine gimbal mount fixing frame 51 is vertically fixed to the fixing ring center of gravity frame 53 of the octagon by normal fixing means.

In addition, the engine gimbal mount fixing plate 52 is located at the center of the inside of the engine gimbal mount fixing frame 51, the engine gimbal mount fixing frame 51 and the ring center of gravity frame ( 53) A liquid rocket engine (not shown) located inside is fixed to the engine gimbal mount fixing plate 52.

In addition, a pair of fixing ring center of gravity fixing plate 54 is located at the centers of both outer sides of the fixing ring center of gravity frame 53, and the pair of anti-rotation process of the lower frame 60 The plate 63 and the fixing means are mutually fixed.

At this time, the gear torque transmission shaft 74 of the worm gear pack 70 is coupled to the rotation shaft 63-1 of the anti-rotation fixing plate 63.

Here, the pair of anti-rotation process plate 63 is fixed on the pair of lower frame vertical support 61, the pair of lower frame vertical support 61 is connected to the H-shaped It is connected to the pair of lower frame horizontal support 62, the movement wheel 64 and the fixing latch 65 is provided in pairs at both ends of the pair of lower frame horizontal support 62.

The engine fixing ring 50 is supported by the lower frame 60 configured as described above, and the liquid rocket engine rotating device 100 according to the present invention is moved by the movable wheel 64 and the fixing latch 65. And fixed.

The liquid rocket engine rotating device 100 according to the present invention configured as described above is coupled to the gear torque transmission shaft 74 when the operator manually rotates the rotary handle 72 of the worm gear pack 70 in a clockwise direction. The rotary shaft 63-1 is operated to rotate the engine fixing ring 50 clockwise.

In addition, when the operator rotates the rotation handle 72 in the counterclockwise direction, the rotation shaft 63-1, which is similarly engaged with the gear torque transmission shaft 74, is activated, so that the engine fixing ring 50 is clocked. It will be rotated in the opposite direction.

The liquid rocket engine rotating apparatus 100 according to the present invention uses the worm gear pack 70 to generate torque with little force, and minimizes the amount of torque required by placing the rotating shaft at the center of gravity of the engine. Without lifting the rocket engine (not shown) into the air, and without the upper power such as a motor, it is possible to rotate the liquid rocket engine by the force of the operator.

Although in the embodiment of the present invention, the engine gimbal mount fixing frame and the fixed ring center of gravity frame has an octagonal form, the shape of the engine gimbal mount fixing frame and the ring fixed center of gravity frame is Of course, it is not limited.

In addition, in the embodiment of the present invention, the lower frame vertical support, the lower frame horizontal support and the anti-rotation fixing plate is a pair, respectively, the two wheels and the fixing latch is a pair, respectively, the lower frame vertical support, Of course, the number of lower frame horizontal support, anti-rotation fixing plate, the moving wheel and the fixing latch is not limited thereto.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes, modifications or adjustments to the example will be possible. Therefore, the scope of protection of the present invention should be construed as including all changes, modifications, and adjustments that fall within the spirit of the technical idea of the present invention.

50: ring for engine fixing
51: frame for fixing the engine gimbal mount
52: engine gimbal mount fixing plate
53: Retaining ring center of gravity frame
54: fixing ring center of gravity fixing plate
60: lower frame
61: lower frame vertical support
62: lower frame horizontal support
63: anti-rotation fixing plate
63-1: axis of rotation 64: wheel for movement
65: latch
70: Worm Gear Pack
71: worm gearbox 72: handle for rotation
73: frame for attaching worm gear pack 74: shaft for transmitting gear torque

Claims (4)

An engine fixing ring;
A lower frame for supporting the engine fixing ring;
And a worm gear pack mounted on the lower frame.
The engine fixing ring,
A fixing ring center of gravity fixing frame;
An engine gimbal mount fixing frame mounted vertically to the fixing ring center of gravity fixing frame;
An engine gimbal mount fixing plate mounted at an inner center of the engine gimbal mount fixing frame;
A liquid rocket engine rotating apparatus, comprising a fixing ring center of gravity fixing plate mounted to an outer center of the fixing ring center of gravity frame.
delete The method of claim 1, wherein the lower frame,
A pair of lower frame vertical supports;
A pair of anti-rotation fixing plates mounted on the pair of lower frame vertical supports and having a rotating shaft;
A pair of lower frame horizontal supports connected to the pair of lower frame vertical supports and having an H shape;
Located in the lower ends of the pair of the lower frame horizontal support of the pair, the liquid rocket engine rotation device, characterized in that consisting of a pair of moving wheels and a fixing latch.
According to claim 1 or 3, wherein the worm gear pack,
A worm gear box containing a worm gear;
A rotation handle connected to the worm gear of the worm gear box;
A gear torque transmission shaft connected to the worm gear of the worm gear box and connected to the rotation shaft;
Liquid rocket engine rotating device characterized in that consisting of a frame for attaching the worm gear pack for attaching the worm gear pack to the lower frame.

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