Gas-liquid connector falling protection device

Abstract

The utility model discloses a falling protection device for a gas-liquid connector. The falling protection device at least comprises a protection cover, a protection plate, a driving unit and a sliding unit, wherein the sliding unit is used for installing and fixing the connector and the pipeline thereof; the protective cover is provided with an opening for the connector to extend out. The near-ground end of the protection plate is rotatably arranged at the opening and is used for shielding the opening so as to protect a connector and a pipeline thereof which are arranged in the protection cover; the sliding unit is slidably arranged on the inner side of the protective plate, one end of the driving unit is connected with the sliding unit, and the other end is rotatably connected with the inner wall of the protective cover; the driving unit pushes the protection plate to open the opening and adaptively rotates by a certain angle, and then drives the sliding unit to slide towards the outside of the opening along the inner side of the protection plate to drive the connector and the pipeline to extend out along the opening; the driving unit drives the sliding unit to slide into the opening along the inner side of the protection plate, drives the connector and the pipeline to retract along the opening, and drives the protection plate to close the opening after the driving unit adaptively rotates by a certain angle.

Description

Technical Field

[0001] The utility model relates to the technical field of ground equipment of aerospace vehicles, and in particular to a gas-liquid connector falling-off protection device. Background Art

[0002] The gas-liquid connector of a launch vehicle is a device used to connect the ground filling and gas supply pipelines with the filling and gas supply interfaces on the rocket during the launch preparation stage, and to separate from the interfaces on the rocket at a predetermined time. The zero-second drop-off connector will separate at zero seconds after the rocket takes off. Usually, the zero-second drop-off connector is distributed at the tail of the launch vehicle. Because it will be affected by the gas flow, it is necessary to protect the connector and pipelines set in the protective structure in time.

[0003] After the connector falls off, once the movement direction of the connector is not controlled during the recovery process, it is very easy to collide with the protective structure and be damaged. Therefore, it is urgent to design a gas-liquid connector falling-off protection device with a guiding function. Utility Model Content

[0004] In view of the above-mentioned technical problems in the related art, the utility model provides a gas-liquid connector falling-off protection device, which effectively reduces the height of the protection device and reduces the impact of the gas flow on the protection device.

[0005] The utility model provides a gas-liquid connector falling-off protection device, which at least includes a protective cover, a protective plate, a driving unit and a sliding unit; wherein the sliding unit is used for the connector and its pipeline to be installed and fixed; the protective cover is provided with an opening for the connector to extend out; the protective plate is rotatably arranged at the opening at its near-ground end, used to cover the opening to protect the connector and its pipeline arranged in the protective cover; the sliding unit is slidably arranged on the inner side of the protective plate, one end of the driving unit is connected to the sliding unit, and the other end is rotatably connected to the inner wall of the protective cover; after the driving unit pushes the protective plate to open the opening and adaptively rotates a certain angle, the sliding unit is driven to slide along the inner side of the protective plate toward the outside of the opening, driving the connector and its pipeline to extend out along the opening; the driving unit drives the sliding unit to slide along the inner side of the protective plate toward the inside of the opening, driving the connector and its pipeline to retract along the opening, and after the driving unit adaptively rotates a certain angle, the protective plate is driven to close the opening.

[0006] In one embodiment, the sliding unit is a bracket slidably arranged on the inner side of the protective plate, guide wheels are arranged outwardly on both sides of the bracket, and bearings are arranged on the outer sides of the guide wheels;

[0007] Guide grooves matching the bearings are provided on both sides of the inner side of the protection plate, and the bearings are installed in the guide grooves to provide guidance for the sliding of the guide wheels.

[0008] In one embodiment, the bracket includes a front bracket and a rear bracket arranged in parallel; the front bracket is arranged on the inner side of the distal end of the protective plate.

[0009] In one embodiment, the connector and its pipeline are installed on the supporting end surfaces of the front bracket and the rear bracket through U-shaped pipe clamps.

[0010] In one embodiment, the driving unit comprises at least a cylinder body and a cylinder rod; one end of the cylinder body is rotatably disposed on the inner wall of the protective cover, and the other end is provided for mounting the cylinder rod, and the protruding end of the cylinder rod is connected to the rear bracket.

[0011] In one embodiment, a first support ear is provided on a side of the rear bracket away from the front bracket, and the extended end of the cylinder rod is connected to the rear bracket through the first support ear.

[0012] In one embodiment, a support plate is provided on a side of the front bracket away from the rear bracket; the support plate is used to support the connector.

[0013] In one embodiment, a mounting seat is provided on the inner wall of the protective cover, and a second ear for connecting the cylinder body is provided on the mounting seat; a side of the cylinder body away from the cylinder rod is rotatably connected to the second ear via a hinge shaft.

[0014] In one embodiment, the protective plate is an arc-shaped plate with an inner arc arranged outward from the opening; the opening is matched with the arc-shaped plate.

[0015] In one embodiment, a pin hole is provided at the ground-proximal end of the arc plate, and a hinge hole is provided at the ground-proximal end of the opening; the pin hole and the hinge hole are connected via a hinge shaft to achieve a rotatable connection between the arc plate and the protective cover.

[0016] The gas-liquid connector fall-off protection device of the utility model embodiment has at least one of the following beneficial effects:

[0017] 1. The gas-liquid connector fall-off protection device of the utility model embodiment adopts a bracket structure and a large inclination angle, which reduces the height of the protection device and reduces the impact of the gas flow on the protection device. At the same time, the large inclination angle makes the recovery process after the connector falls off have both the active drive of the cylinder and the gravity of the hose, which is convenient for the recovery of the connector after it falls off.

[0018] 2. The gas-liquid connector falling-off protection device of the embodiment of the utility model strictly constrains the movement trajectory of the gas-liquid connector during the falling-off process, thereby preventing the protection device from being damaged during the connector falling-off process.

[0019] 3. The gas-liquid connector fall-off protection device of the embodiment of the utility model adopts a fall-off protection mechanism and a protection plate linkage mechanism, which improves the reliability and timeliness of the protection plate closing and effectively avoids the failure of the protection device due to the influence of gas during launch.

[0020] Those skilled in the art will recognize additional features and advantages upon reading the detailed description and upon viewing the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the gas-liquid connector fall-off protection device in the withdrawn state of the embodiment of the utility model.

[0023] Figure 2 It is a schematic structural diagram of the gas-liquid connector of an embodiment of the utility model after extending out of the protective device.

[0024] Figure 3 It is a structural schematic diagram of a sliding unit according to an embodiment of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the rear support part of an embodiment of the utility model.

[0026] Figure 5 It is a schematic structural diagram of the front bracket part of an embodiment of the utility model.

[0027] Figure 6 It is a schematic structural diagram of a protective plate according to an embodiment of the utility model.

[0028] Figure 7 It is a schematic structural diagram of a protective cover according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and through specific embodiments. Spatial relationship terms such as "below", "below", "under...", "low", "above", "on...", "high", etc. are used to facilitate the description to explain the positioning of an element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "an element is above / below another element" can mean that the two elements are in direct contact, or it can mean that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be regarded as limitations. Similar terms represent similar elements throughout the description.

[0030] The directional words in the following description are all directions shown in the figure, and do not limit the specific structure of the embodiment of the utility model. Positional relationship terms such as "near end" and "far end" are used to express the device of the utility model when it is in use (such as Figure 1 For example, the "near-ground end" refers to the end of the device of the present invention that is close to the ground when the device is in use, and the "far-ground end" refers to the end of the device of the present invention that is far from the ground when the device is in use.

[0031] See also Figure 1 and Figure 7 The utility model provides a gas-liquid connector fall-off protection device, which at least includes a protective cover 1, a protective plate 2, a drive unit 3 and a sliding unit 4. The sliding unit 4 is used to install and fix the connector 9 and its pipeline 10. The protective cover 1 is provided with an opening 11 for the connector to extend out, and the protective plate 2 is rotatably arranged at the opening 11 at the near-ground end, which is used to cover the opening 11 to protect the connector and its pipeline arranged in the protective cover 1. The sliding unit 4 is slidably arranged on the inner side of the protective plate 2, and one end of the drive unit 3 is connected to the sliding unit 4, and the other end is rotatably connected to the inner wall of the protective cover 1.

[0032] Specifically, given that the near-ground end of the protective plate 2 is rotatably disposed at the opening 11, the opening 11 can be opened after the driving unit 3 pushes the protective plate 2. In order to adapt to the opening action of the protective plate, the driving unit 3 adaptively rotates a certain angle. After the opening 11 is opened, the sliding unit 4 continues to be driven to slide along the inner side of the protective plate 2 toward the outside of the opening 11, and drives the connector 9 and its pipeline 10 to extend along the opening 11. Further, the driving unit 3 drives the sliding unit 4 to slide along the inner side of the protective plate 2 toward the inside of the opening 11, and after pulling the connector to disengage from the arrow-shaped interface, drives the connector 9 and its pipeline 10 to retract into the protective cover 1 along the opening 11, and drives the protective plate 2 to close the opening 11 after the driving unit 3 adaptively rotates a certain angle.

[0033] The gas-liquid connector fall-off protection device of the utility model embodiment adopts a fall-off protection mechanism and a protection plate linkage mechanism, which improves the reliability and timeliness of closing the protection plate and effectively avoids the failure of the protection device due to the influence of gas during launch.

[0034] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 In the above embodiment, the protective cover 1 is used as the installation base of other components. The bottom of the protective cover 1 is provided with a flange, and a connection hole is provided in the flange. The protective cover 1 is connected to the launch platform after the bolt group passes through the connection hole, so that the protective cover 1 is fixedly installed on the launch platform. The opening 11 is provided on one side of the top of the protective cover 1. The interface end of the connector 9 extends along the opening 11 and is connected to the arrow interface. After being separated from the arrow interface, it is pulled back into the protective cover 1 under the action of the driving unit 3 and the sliding unit 4.

[0035] The protective plate 2 is an arc-shaped plate with an inner arc arranged outside the opening 11, and the opening 11 is matched with the arc-shaped plate (protective plate 2). A hinge hole 111 is provided at the ground end of the opening 11 of the protective cover 1, and a pin hole 21 matched with the hinge hole 111 is provided at the ground end of the protective plate 2. The protective cover 1 and the protective plate 2 are rotatably connected by sequentially passing the hinge shaft through the hinge hole 111 and the pin hole 21.

[0036] In this embodiment, one end of the connector 9 is used to connect with the interface on the arrow, and the other end is connected with the pipeline 10 for conveying propellant. The pipeline is used to convey the medium such as the propellant. The connector 9 and its pipeline 10 are fixedly arranged on the sliding unit 4, and slide along the inner side of the protective plate with the sliding unit 4. For example, the lower part of the pipeline is not constrained, and the spatial position compensation of the connector docking and recovery state can be adapted through the deformation of the pipeline.

[0037] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, the sliding unit 4 is a bracket slidably disposed inside the protective plate 2. The bracket includes a front bracket 41 and a rear bracket 42 disposed in parallel, the front bracket 41 is disposed inside the far-ground end of the protective plate 2, and the rear bracket 42 is disposed inside the near-ground end of the protective plate 2. Guide wheels 43 are disposed outwardly on both sides of the front bracket 41 and the rear bracket 42, and bearings 44 are disposed on the outer sides of the guide wheels 43.

[0038] It should be noted that the guide wheel 43 is arranged to roll along the inner side of the protective plate 2, and the bearing 44 protrudes from the surface of the guide wheel 43 and is matched with the arc-shaped guide grooves on both sides of the inner side of the protective plate 2. When the guide wheel 43 rolls along the protective plate 2, the bearing slides along the guide groove, thereby providing guidance for the rolling of the guide wheel 43. The guide groove openings on both sides of the inner side of the protective plate 2 are arranged opposite to each other and are matched with the bearings on the front bracket 41 and the rear bracket 42 respectively.

[0039] The gas-liquid connector fall-off protection device of the utility model embodiment limits the radial fall-off of the bearing from the protection plate through the guide groove, thereby ensuring that the bracket slides along the inner surface of the protection plate during the extension and retraction of the connector.

[0040] See also Figure 1 , Figure 2 and Figure 4 In one embodiment, the connector 9 and the pipe 10 are mounted on the supporting end faces of the front bracket 41 and the rear bracket 42 through the U-shaped pipe clamp 5. The supporting end faces of the front bracket 41 and the rear bracket 42 are both provided with screw holes 45 for installing the U-shaped pipe clamp 5. The U-shaped pipe clamp 5 is detachably mounted on the bracket through bolts. The U-shaped pipe clamp 5 is used to fix the connector 9 and the pipe 10 to the bracket.

[0041] Specifically, the driving unit 3 drives the connector 9 and the pipeline 10 fixed by the U-shaped pipe clamp 53 to move synchronously through the driving bracket, so that they move along the inner surface of the protective plate 2 together.

[0042] See also Figure 2 and Figure 4 In any of the above embodiments, the driving unit 3 is a cylinder, usually a double-acting cylinder. The cylinder at least includes a cylinder body 31 and a cylinder rod 32. One end of the cylinder body 31 is rotatably arranged on the inner wall of the protective cover 1, and the other end is for the cylinder rod 32 to be installed. The extended end of the cylinder rod 32 is connected to the rear bracket 42.

[0043] Furthermore, since the ground-proximal end of the protective plate is rotatably arranged on the protective cover through a hinge shaft, the force direction of the cylinder rod on the bracket will be adaptively adjusted with the movement of the protective plate during the process of opening or closing the opening of the protective plate. Therefore, in order to adapt to the movement of the protective plate, the extended end of the cylinder rod can be rotatably arranged on the rear bracket 42. For example, a first lug 421 is provided on the side of the rear bracket 42 away from the front bracket 41, and the first lug 421 of the extended end of the cylinder rod 32 is fixed by bolts after being in place, thereby realizing the rotatable connection between the cylinder rod 32 and the rear bracket 42.

[0044] Furthermore, in order to facilitate the rotatable connection between the cylinder body 31 and the inner wall of the protective cover 1, a mounting seat 12 can be provided on the inner wall of the protective cover 1. The mounting seat 12 is provided with a second ear for connecting the cylinder body 31, and the side of the cylinder body 31 away from the cylinder rod 32 is rotatably connected to the second ear through a hinge shaft.

[0045] Specifically, when the protective plate is in a closed opening state, after the connector and pipeline are installed in place, the cylinder is actuated, driving the cylinder rod to extend and push the rear bracket to drive the protective plate to open the opening. After the opening is opened, the cylinder continues to act, driving the cylinder rod to continue to extend and push the rear bracket to drive the front bracket to slide along the inner surface of the protective plate until the connector is extended into place. During the above-mentioned connector extension process, the cylinder body adaptively rotates a certain angle to adapt to the opening action of the protective plate. When it is necessary to withdraw the connector and its pipeline, the cylinder is driven in the reverse direction.

[0046] See also Figure 5 In the above embodiment, a support plate 411 is provided on one side of the front bracket 41 away from the rear bracket 42. The support plate 411 extends out of the front bracket 41 and is usually used to support the connector after the connector is separated from the arrow interface.

[0047] See also Figure 2 It should be noted that the height of the mounting seat 12 is lower than the height of the rear bracket 42. In other words, the connector fall-off protection device adopts a larger inclination angle, which reduces the height of the protection device and reduces the impact of the gas flow on the protection device.

[0048] The deployment process of the gas-liquid connector fall-off protection device of the utility model embodiment is as follows:

[0049] The rodless chamber of the cylinder is inflated, and the rod chamber is exhausted. The cylinder rod pushes the rear bracket, hose, front bracket and connector to move forward along the arc guide groove of the protective plate. Under the action of the cylinder rod and the adaptive rotation of the cylinder body, the protective plate first opens around the hinge axis. After the protective plate is fully opened, the cylinder rod pushes the rear bracket, hose, front bracket and connector to continue to move to the docking position (such as Figure 2 After the rodless cavity is moved into position, the air supply stops, and the rodless cavity is deflated after the connector is docked with the interface on the arrow.

[0050] The withdrawal process of the gas-liquid connector fall-off protection device of the utility model embodiment is as follows:

[0051] The cylinder rod chamber is inflated, and the non-rod chamber is exhausted. The cylinder rod pulls the rear bracket to move along the arc guide groove of the protective plate toward the opening, and drives the connector to separate from the arrow interface through the hose. When the rear bracket passes the arc section of the arc guide groove of the protective plate, the cylinder rod continues to retract, pulling the rear bracket to drive the protective plate to flip along the hinge axis, and the cylinder body also rotates adaptively until the protective plate and the protective cover opening are closed (such as Figure 1 shown).

[0052] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-liquid connector fall-off protection device, characterized in that: At least includes a protective cover, a protective plate, a driving unit and a sliding unit; wherein the sliding unit is used for the connector and its pipeline to be installed and fixed; The protective cover is provided with an opening for the connector to extend out; the protective plate is rotatably arranged at the opening at its ground-proximal end, and is used to cover the opening to protect the connector and its pipeline arranged in the protective cover; the sliding unit is slidably arranged inside the protective plate, one end of the driving unit is connected to the sliding unit, and the other end is rotatably connected to the inner wall of the protective cover; After the driving unit pushes the protective plate to open the opening and adaptively rotates a certain angle, the sliding unit is driven to slide along the inner side of the protective plate toward the outside of the opening, driving the connector and its pipeline to extend along the opening; the driving unit drives the sliding unit to slide along the inner side of the protective plate toward the inside of the opening, driving the connector and its pipeline to retract along the opening, and after the driving unit adaptively rotates a certain angle, it drives the protective plate to close the opening.

2. The gas-liquid connector fall-off protection device according to claim 1, characterized in that: The sliding unit is a bracket slidably arranged on the inner side of the protective plate, guide wheels are arranged outwardly on both sides of the bracket, and bearings are arranged on the outer sides of the guide wheels; Guide grooves matching the bearings are provided on both sides of the inner side of the protection plate, and the bearings are installed in the guide grooves to provide guidance for the sliding of the guide wheels.

3. The gas-liquid connector fall-off protection device according to claim 2, characterized in that: The bracket comprises a front bracket and a rear bracket which are arranged in parallel; the front bracket is arranged on the inner side of the distal end of the protective plate.

4. The gas-liquid connector fall-off protection device according to claim 3, characterized in that: The connector and its pipeline are installed on the supporting end surfaces of the front bracket and the rear bracket through U-shaped pipe clamps.

5. The gas-liquid connector fall-off protection device according to claim 4, characterized in that: The driving unit at least comprises a cylinder body and a cylinder rod; one end of the cylinder body is rotatably arranged on the inner wall of the protective cover, and the other end is used for mounting the cylinder rod, and the extended end of the cylinder rod is connected to the rear bracket.

6. The gas-liquid connector fall-off protection device according to claim 5, characterized in that: A first support ear is provided on a side of the rear bracket away from the front bracket, and the extended end of the cylinder rod is connected to the rear bracket through the first support ear.

7. The gas-liquid connector fall-off protection device according to claim 3, characterized in that: A support plate is provided on one side of the front bracket away from the rear bracket; the support plate is used to support the connector.

8. The gas-liquid connector fall-off protection device according to claim 5, characterized in that: The inner wall of the protective cover is provided with a mounting seat, and the mounting seat is provided with a second lug for connecting the cylinder body; the side of the cylinder body away from the cylinder rod is rotatably connected to the second lug through a hinge shaft.

9. The gas-liquid connector fall-off protection device according to claim 1, characterized in that: The protective plate is an arc-shaped plate with an inner arc arranged outward from the opening; the opening is matched with the arc-shaped plate.

10. The gas-liquid connector fall-off protection device according to claim 9, characterized in that: The end of the arc plate near the ground is provided with a pin hole, and the end of the opening near the ground is provided with a hinge hole; the pin hole and the hinge hole are connected through a hinge shaft to realize the rotatable connection between the arc plate and the protective cover.

Images