A floating rotary combustion chamber device

Abstract

The present invention relates to a floating rotary mechanism, characterized in that it comprises: a driving shaft, on which a first gear and a second gear are arranged; a rotary body, which has a plurality of cavities for accommodating medicine columns; a rotary body floating mechanism, comprising a gear transmission device and a cam, the gear transmission device meshes with the first gear and drives the cam to operate; the rotary body floating mechanism also comprises a cam follower and a rotary body support, the cam follower can make the rotary body support move axially under the action of the cam; a rotary body rotating mechanism, comprising a dial, a groove wheel and a third gear, the third gear meshes with the second gear, the groove wheel is provided with a cam, the cam cooperates with the dial, so that when the cam rotates one circle, the dial rotates less than one circle; the dial is connected to the rotary body and can drive the rotary body to rotate.

Description

Technical Field

[0001] The invention belongs to the field of aerospace technology and relates to a floating rotary chamber mechanism, in particular to a floating rotary chamber mechanism of a pulse solid rocket engine with multiple ignition and starting capabilities. Background Art

[0002] Solid rocket engines are easy to maintain, safe and reliable, and play an important role as a power unit for missiles and rockets. However, for traditional solid rocket engines, since they are a power unit that is ignited once, it is difficult to interrupt the propellant once it is ignited, so it is impossible to stop the thrust and start and stop multiple times.

[0003] At present, typical solid multi-pulse engine technologies such as solid variable thrust engines, solid dual-pulse engines, and solid attitude and orbit control engines have made continuous breakthroughs, and dual-pulse engines, three-pulse engines, and even six-pulse engines have been developed. These multi-pulse engines basically adopt a compartment-type integrated structure, mainly adding one or two pulse units to the combustion chamber of the rocket engine. However, this solution has the following problems: increasing the volume and free volume of the combustion chamber, increasing the difficulty of actual ignition, the pulse unit is connected to the combustion chamber, making the grain more susceptible to changes in the surrounding environment, and the degree of energy distribution discretization is not high, making it difficult to achieve a higher level of engine energy distribution and management. Summary of the invention

[0004] Based on the inventor's research and practical experience in this field, the following improved technical solution is proposed here.

[0005] A floating turret mechanism, characterized by comprising:

[0006] A driving shaft, wherein a first gear and a second gear are arranged on the driving shaft;

[0007] A rotating barrel body, wherein the rotating barrel body has a plurality of cavities for accommodating the charge column;

[0008] The rotating barrel body floating mechanism comprises a gear transmission device and a cam, wherein the gear transmission device is meshed with the first gear and drives the cam to operate; the rotating barrel body floating mechanism also comprises a cam follower and a rotating barrel body support member, wherein the cam follower can cause the rotating barrel body support member to move axially under the action of the cam;

[0009] The rotary barrel rotating mechanism comprises a dial, a groove wheel and a third gear, wherein the third gear is meshed with the second gear, a cam is arranged on the groove wheel, and the cam cooperates with the dial, so that when the cam rotates one circle, the dial rotates less than one circle; the dial is connected to the rotary barrel and can drive the rotary barrel to rotate.

[0010] Further, the gear transmission device includes a fourth gear and a bevel gear pair, and the bevel gear pair includes a first bevel gear coaxial with the fourth gear and a second bevel gear connected to the cam.

[0011] Furthermore, the rotating barrel body floating mechanism also includes a reset elastic member for cooperating with the cam to realize the axial movement of the rotating barrel body support member.

[0012] Furthermore, the groove wheel includes a circular base plate, an annular portion extending axially at the outer edge of the base plate, a notch being provided on the annular portion, and a cam structure being provided on the base plate, the cam structure including a circular disc and a cam extending from the circular disc, the diameter of the circular disc being smaller than the diameter of the annular portion, thereby forming an annular groove on the radial outer side of the circular disc and the radial inner side of the annular portion, the cam including an arcuate edge and a straight edge intersecting the arcuate edge, and the portion where the arcuate edge and the straight edge of the cam intersect is located in the notch.

[0013] Furthermore, the dial has a plurality of pins perpendicular to the dial body, and the distance between the straight edge of the cam of the groove wheel and one side of the notch is just enough for one pin to pass through.

[0014] Furthermore, the pins are cylindrical pins, and the number of the pins is 6, and the pins are evenly distributed along the circumference.

[0015] Furthermore, it also includes a blind powder detection device, which includes:

[0016] A cylindrical structure, wherein a curved groove is arranged on the surface of the body of the cylindrical structure, and a gear is arranged on one side of the cylindrical structure;

[0017] The gear rack mechanism includes a large range-extending gear, a small range-extending gear, a long rack, and a short rack;

[0018] An auxiliary rod is connected with the short rack.

[0019] Furthermore, the curved groove includes a plurality of first portions located in a plane perpendicular to the axial direction, and a plurality of second portions respectively connecting two adjacent first portions.

[0020] Furthermore, it also includes a medicine collecting device, which includes a coil spring, a rotating body, a locking block, a torsion spring, a torsion spring support frame, a rotating body support and a rotating shaft. The coil spring is arranged on one side of the rotating shaft, and the rotating body is fixed on the rotating shaft. The rotating body includes a disc-shaped body and a plurality of protrusions arranged on the outside of the disc-shaped body. The locking block has two locking arms that can cooperate with the protrusions, and the locking block is connected to the torsion spring.

[0021] Based on the above technical solutions, it can be seen that the present invention has the following beneficial technical effects:

[0022] A new design of a multi-pulse solid rocket engine capable of continuous loading is proposed, in which the rotor and the nozzle are assembled separately to achieve continuous loading of solid fuel.

[0023] Other features and advantages of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Exemplary embodiments of the present invention are described with reference to the accompanying drawings, in which:

[0025] Figure 1 It is a schematic diagram of the overall assembly of the floating rotary chamber mechanism of the present invention.

[0026] Figure 2 It is a schematic diagram of the swivel body-sleeve assembly of the floating swivel mechanism of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the extension rod sleeve of the floating rotating mechanism of the present invention.

[0028] Figure 4 It is a schematic diagram of the groove wheel structure of the floating swivel mechanism of the present invention.

[0029] Figure 5 It is a schematic diagram of the structure of the powder column of the floating rotating chamber mechanism of the present invention.

[0030] Figures 6(a) and 6(b) are general assembly drawings of the floating rotary mechanism of the present invention including the blind powder collecting device.

[0031] Figure 7 The utility model relates to a range extending device in a blind powder collecting mechanism of a floating rotary mechanism of the present invention.

[0032] Figure 8 The utility model relates to a powder collecting device of a blind powder collecting mechanism of a floating rotating chamber mechanism of the present invention. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented without some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are intended for illustration purposes only and should not be considered as features or limitations of the claims unless explicitly stated in the claims.

[0034] In the following description, the descriptions about directions, such as "upper", "lower", "inner", "outer", "radial", "axial", etc., which may be used, are only for the convenience of description, unless otherwise specified, and are not intended to form any limitation on the technical solution of the invention. In addition, in the following description, terms such as "first", "second", etc. are used to describe the elements of the present application, and these terms are only used to distinguish the elements, and are not intended to limit the nature, sequence, order or number of these elements.

[0035] Figure 1 The overall assembly diagram of the floating rotary mechanism of the present invention is shown. Figure 1 It can be seen that the floating swivel mechanism includes a driving shaft 1, a swivel body floating assembly, a swivel body-sleeve assembly, an intermittent assembly, and a nozzle 15. In general, the overall structure of the floating swivel mechanism of the present invention can be Figure 1 The middle is divided into a left half and a right half. The left half is used to realize the floating of the rotating barrel body, that is, the rotating barrel body moves back and forth in the axial direction; the right half is used to realize the intermittent rotation of the rotating barrel body.

[0036] The driving shaft 1 is connected to a frame (not shown) via a bearing, and one end of the driving shaft 1 is connected to a servo motor, so that the driving shaft 1 rotates under the drive of the servo motor.

[0037] Specifically, the rotating body floating assembly includes a rotating body periodic pinion 2, a rotating body periodic large gear 3, a first rotating body periodic bevel gear 4, a second rotating body periodic bevel gear 5, and a cam 6. The rotating body periodic pinion 2 is fixedly arranged on the driving shaft 1, for example, by a spline, especially a flat key, and meshes with the rotating body periodic large gear 3; the rotating body periodic large gear 3 and the first rotating body periodic bevel gear 4 are coaxially arranged, so that the two rotate together. The rotating body periodic large gear 3 and the first rotating body periodic bevel gear 4 are fixedly arranged on the shaft, for example, by a spline, especially a flat key, and the shaft is fixed to the frame through a bearing. The first rotating body periodic bevel gear 4 meshes with the second rotating body periodic bevel gear 5, and the rotation axes of the two are at an angle of 90°. The cam 6 is arranged on the shaft to which the second rotating body periodic bevel gear 5 is fixed, so that the second rotating body periodic bevel gear 5 can drive the cam 6 to move. The second rotating body periodic bevel gear 5 and the cam 6 are fixed to the same shaft, for example, by a spline, especially a flat key, and the shaft is fixed to the frame through a bearing.

[0038] Figure 2 FIG. 1 shows a schematic diagram of the rotating barrel body-sleeve assembly of the floating rotating barrel mechanism of the present invention. Figure 2It can be seen that the rotating barrel-sleeve assembly includes a sleeve 7, a cam baffle 9, a rear extension rod 10, a rotating barrel 13, a spring washer 14, a return spring 16, and an extension rod sleeve 18. The cam baffle 9, the sleeve 7, the rear extension rod 10, the rotating barrel 13, the spring washer 14, the return spring 16, and the extension rod sleeve 18 are coaxially arranged, and the sleeve 7 is arranged on the frame. The front end of the rotating barrel 13 is connected to the extension rod sleeve 18 through a spline, so that it can slide relative to each other and transmit torque. The extension rod sleeve 18 is supported on the frame through a bearing. The rotating barrel 13 includes a plurality of barrels evenly distributed in the circumferential direction.

[0039] The structure of the extension rod sleeve 18 is as follows Figure 3 As shown. Figure 3 As can be seen in the figure, the extension rod sleeve 18 includes a first end and a second end, and a bearing mounting portion is arranged between the first end and the second end. The first end and the second end can be annular structures, and a protrusion is arranged on the inner wall of the ring to connect with other components.

[0040] Back to Figure 1 and Figure 2 The intermittent assembly includes a six-cylindrical pin dial 17, a groove wheel 19, an intermittent transmission gear 20, and an intermittent transmission pinion 21. The intermittent transmission pinion 21 is fixed to the driving shaft 1 by a spline, especially a flat key. The intermittent transmission gear 20 is located obliquely above the intermittent transmission pinion 21 and meshes with it. The intermittent transmission gear 20 and the groove wheel 19 are supported on the same shaft and fixedly connected to the shaft, and the shaft is supported on the frame by a bearing.

[0041] The six-cylindrical pin dial 17 is fixedly connected to the extension rod sleeve 18. In addition, the six-cylindrical pin dial 17 is also connected to the groove wheel 19 through the cylindrical pins arranged thereon. The structure of the groove wheel 19 is as follows: Figure 4 As shown. The groove wheel 19 includes a circular base plate, and an annular portion extends axially at the outer edge of the base plate, and a notch is formed on the annular portion. A cam structure is also provided on the base plate, and the cam structure includes a circular disc and a cam extending from the circular disc. The diameter of the circular disc is smaller than the diameter of the annular portion, so that an annular groove is formed on the radial outer side of the circular disc and the radial inner side of the annular portion. The cam includes an arcuate edge and a straight edge intersecting the arcuate edge. The portion where the arcuate edge and the straight edge of the cam intersect is located in the notch, and the distance between the straight edge and one side of the notch is preferably just enough for a cylindrical pin to pass through. When the installation is completed, in the initial state, the groove of the groove wheel 19 accommodates a cylindrical pin of the six-cylindrical pin dial 17.

[0042] The nozzle 15 is fixed on the frame. When the engine is not working, there is a gap between the nozzle 15 and the front bore of the rotor body 13.

[0043] Figure 5This is a schematic diagram of the grain structure of the floating rotary chamber mechanism of the present invention. Starting from Figure 5 As can be seen, the grain 12 is generally cylindrical, and the propellant 11 is provided at the end of the cylindrical grain 12. The grain 12 can be placed into the rotary chamber body 13 under the action of the cartridge feeding device 8. As Figure 1 shown, the cartridge feeding device 8 can be a "C" - shaped structure, including two parallel rod - shaped members. One rod - shaped member is coaxial with the sleeve 7, and the axis of the other rod - shaped member coincides with the axis of the rotary chamber body 13 in the radial direction.

[0044] The following is an explanation of the operation of the floating rotary chamber mechanism of the present invention:

[0045] Floating of the rotary chamber body: The servo - motor drives the driving shaft 1 to rotate. The rotary chamber body periodic pinion 2 fixed on the driving shaft 1 is also driven to rotate, and then drives the rotary chamber body periodic gear 3 meshing with the rotary chamber body periodic pinion to rotate. Since the first rotary chamber body periodic bevel gear 4 is coaxially connected with the rotary chamber body periodic gear 3, it also rotates accordingly; the second rotary chamber body periodic bevel gear 5 is coaxially connected with the cam 6 and meshes with the first rotary chamber body periodic bevel gear 4, so the cam 6 is also driven to rotate; the cam 6 rotates and squeezes the cam baffle 9 to move forward along the sleeve 7. The cam baffle 9 then sequentially squeezes the rear - end extension rod 10, the rotary chamber body 13, the spring gasket 14, and the return spring 16 to move forward along the sleeve 7 - that is, in the direction of the nozzle 15 - so as to realize the tight closure of the rotary chamber body 13 and the nozzle 15 to complete gas - tightness. After the gas - tightness is completed, the rotary chamber body, the spring gasket, the rear - end extension rod, and the cam baffle return to the initial position under the action of the return spring to complete one cycle.

[0046] Rotation of the rotary chamber body: The servo - motor drives the driving shaft 1 to rotate. The intermittent drive pinion 21 fixed on the driving shaft is also driven to rotate, driving the intermittent drive gear 20 meshing with it to rotate; the intermittent drive gear is rigidly coaxially connected with the Geneva wheel 19, so the Geneva wheel is also driven to rotate; as Figure 1 shown, initially, one of the cylindrical pins of the six - cylindrical - pin dial 17 is located in the groove of the Geneva wheel 19. Before the next cylindrical pin is pushed into the groove by the Geneva wheel, the outer edge of the Geneva wheel contacts two cylindrical pins of the six - cylindrical - pin dial. During this period, the six - cylindrical - pin dial remains stationary; when the next cylindrical pin is pushed into the groove of the Geneva wheel, the Geneva wheel can drive the six - cylindrical - pin dial to rotate; when the Geneva wheel rotates one week, the dial rotates 1 / 6 of a week. The dial is rigidly connected with the extension rod sleeve 18, and the extension rod sleeve is connected with the front end of the rotary chamber body 13 through splines, so as to transmit the torque to the rotary chamber body and finally realize the intermittent rotation of the rotary chamber body.

[0047] Furthermore, in order to determine whether there is a misfire in the chamber after ignition, the present invention also provides a misfired powder detection device. Specifically, as shown in FIGS. 6(a) and 6(b), in Figure 1The device shown in the figure is provided with an annular cylindrical structure on the outside, a curved groove 22 is provided on the main body surface of the cylindrical structure, and a gear is provided on one side of the cylindrical structure. As shown in FIG6 , the curved groove 22 includes a plurality of first parts located in a plane perpendicular to the axial direction, and a plurality of second parts respectively connecting two adjacent first parts. The blind powder detection device also includes the following Figure 7 The rack and pinion mechanism shown in the figure includes a range-increasing gear shaft 24, a large range-increasing gear 25, a small range-increasing gear 27, a long rack 26, and a short rack 28. In addition, an auxiliary rod 23 is also provided. The auxiliary rod 23 and the short rack 28 are both fixed on the frame, and the long rack 26 is supported by the frame and can move forward and backward.

[0048] The blind powder detection device is arranged on the frame. A roller is arranged on one side of the auxiliary rod 23, and the roller is located in the curved groove 22. The cylindrical structure has an external gear, which can mesh with the driving gear 36 on the driving shaft 1, so that the cylindrical structure rotates, and the curved groove 22 rotates accordingly, and the roller located in the curved groove 22 moves in the curved groove. Since the auxiliary rod and the short rack 23 are fixed on the frame, when the roller on the auxiliary rod rolls in the second part of the curved groove, it drives the short rack 28 to move forward and backward, and the movement of the short rack drives the small range-increasing gear 27 to rotate, and the small range-increasing gear drives the coaxial large range-increasing gear 25 to rotate, and the rotation of the large range-increasing gear causes the long rack 26 to move forward and backward in a large range, and this action can send the blind powder into the powder collecting device to be described below.

[0049] Further, if the presence of blind powder is detected, the following method can be used: Figure 8 The useless gunpowder collecting device shown in FIG. 6 and FIG. Figure 8 It can be seen that the device is arranged on a frame, and includes a coil spring 29, a rotating body 30, a locking block 31, a torsion spring 32, a torsion spring support frame 33, a rotating body support 34 and a rotating shaft 35. The coil spring 29 is arranged on one side of the rotating shaft 35, and the rotating body 30 is fixedly arranged on the rotating shaft 35. The rotating body 30 includes a disc-shaped body and a plurality of protrusions arranged on the outside of the disc-shaped body. The protrusion can be a convex angle, one side of which is a straight edge parallel to or coincident with the radial direction of the disc-shaped body, and the other side is a beveled edge, and the beveled edge can be tangent to the disc. Figure 8 As shown, a platform is provided at the top of the convex angle. The number of convex angles can be set to 3. The locking block 31 has two locking arms, which can respectively cooperate with the two sides of the convex angle. The locking block 31 is also connected to a torsion spring. The torsion spring 32 is arranged on a torsion spring support frame 33.

[0050] When the blind powder is fed into the powder collecting device, the powder column 12 presses against the lock block 31 fixed on the torsion spring support frame 33, so that the lock block no longer clamps the triangular protrusion at the tail end of the rotating body 30. At this time, the elastic force of the spiral spring 29 at the end of the rotating body makes the rotating body rotate. When it turns to the next empty powder position, since there is no powder column to push the lock block, the lock block 31 is continuously clamped at the triangular protrusion at the tail end of the rotating body by the elastic force of the torsion spring 32. The blind powder collecting device can work cyclically in this way.

[0051] The above description is merely an exemplary embodiment of the spirit and principle of the present invention. It will be appreciated by those skilled in the art that various changes may be made to the described examples without departing from the spirit and principle, and these changes and their various equivalents are all anticipated by the inventors and fall within the scope defined by the claims of the present invention.

Claims

1. A floating rotary mechanism, characterized in that: include: A driving shaft, wherein a first gear and a second gear are arranged on the driving shaft; A rotating barrel body, wherein the rotating barrel body has a plurality of cavities for accommodating the charge column; The rotating barrel body floating mechanism comprises a gear transmission device and a cam, wherein the gear transmission device is meshed with the first gear and drives the cam to operate; the rotating barrel body floating mechanism also comprises a cam follower and a rotating barrel body support member, wherein the cam follower can cause the rotating barrel body support member to move axially under the action of the cam; The rotary barrel rotating mechanism comprises a dial, a groove wheel and a third gear, wherein the third gear is meshed with the second gear, a cam is arranged on the groove wheel, and the cam cooperates with the dial, so that when the cam rotates one circle, the dial rotates less than one circle; the dial is connected to the rotary barrel and can drive the rotary barrel to rotate.

2. The floating rotary mechanism according to claim 1, characterized in that: The gear transmission device includes a fourth gear and a bevel gear pair, wherein the bevel gear pair includes a first bevel gear coaxial with the fourth gear and a second bevel gear connected to the cam.

3. The floating rotary mechanism according to claim 1, characterized in that: The rotating barrel body floating mechanism also includes a reset elastic member for cooperating with the cam to realize the axial movement of the rotating barrel body support member.

4. The floating rotary mechanism according to claim 1, characterized in that: The groove wheel includes a circular base plate, an annular portion extending axially at the outer edge of the base plate, a notch being provided on the annular portion, and a cam structure being provided on the base plate, the cam structure including a circular disc and a cam extending from the circular disc, the diameter of the circular disc being smaller than the diameter of the annular portion, thereby forming an annular groove on the radial outer side of the circular disc and the radial inner side of the annular portion, the cam including an arcuate edge and a straight edge intersecting the arcuate edge, and the portion where the arcuate edge and the straight edge of the cam intersect is located in the notch.

5. The floating turret mechanism according to claim 4, characterized in that: The dial has a plurality of pins which are perpendicular to the dial body, and the distance between the straight edge of the cam of the groove wheel and one side of the notch is just enough for one pin to pass through.

6. The floating turret mechanism according to claim 5, characterized in that: The pins are cylindrical pins, and the number of the pins is 6, and the pins are evenly distributed along the circumference.

7. The floating turret mechanism according to any one of claims 1 to 6, characterized in that: It also includes a blind powder detection device, which includes: A cylindrical structure, wherein a curved groove is arranged on the surface of the body of the cylindrical structure, and a gear is arranged on one side of the cylindrical structure; The gear rack mechanism includes a large range-extending gear, a small range-extending gear, a long rack, and a short rack; An auxiliary rod is connected with the short rack.

8. The floating turret mechanism according to claim 7, characterized in that: The curved groove includes a plurality of first parts located in a plane perpendicular to the axial direction, and a plurality of second parts respectively connecting two adjacent first parts.

9. The floating turret mechanism according to claim 7, characterized in that: It also includes a medicine collecting device, which includes a coil spring, a rotating body, a locking block, a torsion spring, a torsion spring support frame, a rotating body support and a rotating shaft. The coil spring is arranged on one side of the rotating shaft, and the rotating body is fixed on the rotating shaft. The rotating body includes a disc-shaped body and a plurality of protrusions arranged on the outside of the disc-shaped body. The locking block has two locking arms that can cooperate with the protrusions, and the locking block is connected to the torsion spring.

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