Interface adjustable frame type rappelling device

Abstract

The present invention discloses a frame-type rappelling device with an adjustable interface, which is installed above the helicopter cabin door. The device comprises a suspended crossbar with a rope hanging ring mounted on the crossbar. Several sets of length-adjustable struts and pull rods are arranged along the crossbar. One end of the strut is a radial bearing and is hingedly mounted to the interface above the helicopter cabin door via a quick-release latch, while the other end is fixedly connected to the crossbar at an angle upward. Both ends of the pull rod are radial bearings, one end of which is hingedly mounted to the interface above the helicopter cabin door via a quick-release latch, while the other end is hinged to the upper end of the same set of struts. The struts and pull rods in the same set form a triangle on the side of the crossbar closest to the helicopter, with the struts providing support and the pull rods providing tension. The device does not occupy space in the cabin, does not interfere with the cabin door, is easy to load and unload, and is reliable and safe.

Description

Technical Field

[0001] The invention relates to helicopter rappelling, and in particular to a frame-type rappelling device with adjustable interfaces. Background Art

[0002] At present, helicopter rappelling devices are generally installed on the top of the helicopter cabin. Not only is the installation location limited and occupies space inside the cabin, but the distance it can extend outside the helicopter cabin is also short, making it easy for rappellers to interfere with the cabin door. In addition, in an emergency, there is no time to retract the device, affecting the closing of the helicopter cabin door. Summary of the Invention

[0003] The purpose of the present invention is to provide a frame-type rappelling device with an adjustable interface, which does not occupy space in a cabin, does not interfere with a cabin door, is convenient for loading and unloading, and is reliable and safe.

[0004] The technical solution adopted in the present invention is:

[0005] The utility model relates to a frame-type rappelling device with an adjustable interface, which is installed above the cabin door outside the helicopter cabin. The utility model comprises a suspended cross bar with a rope hanging ring installed on the cross bar. Several groups of length-adjustable struts and pull rods are arranged along the cross bar. One end of the strut is a centripetal bearing and is hingedly installed on the interface above the cabin door outside the helicopter cabin through a quick-release pin, and the other end is fixedly connected to the cross bar obliquely upward. Both ends of the pull rod are centripetal bearings and one end is hingedly installed on the interface above the cabin door outside the helicopter cabin through a quick-release pin, and the other end is hinged to the upper end of the strut in the same group. The struts and pull rods in the same group form a triangle on the side of the cross bar close to the helicopter. The struts provide supporting force and the pull rods provide pulling force.

[0006] Furthermore, the pull rod includes a pull cylinder, a pull rod adjustment section threadedly connected to both ends of the pull cylinder, and a radial bearing located at the end of the pull rod adjustment section. The radial bearing at one end of the pull rod is hingedly installed on the interface above the helicopter cabin door through a quick-release pin, and the radial bearing at the other end is hingedly connected to the upper end of the support rod of the same group through bolts.

[0007] Furthermore, a locking nut is provided on the pull rod adjustment section.

[0008] Furthermore, the support rod includes a support tube, a support rod adjustment section threadedly connected to the lower end of the support tube, a radial bearing located at the end of the support rod adjustment section, and a connecting head located at the upper end of the support tube. The radial bearing at the lower end of the support rod is hingedly installed on the interface above the helicopter cabin door through a quick-release pin, and the connecting head is put on the cross bar and locked.

[0009] Furthermore, a locking nut is provided on the support rod adjustment section.

[0010] Furthermore, the quick-release latch is connected to the corresponding support rod or pull rod through a connecting rope.

[0011] Furthermore, the cross bar is extended in two sections, two sets of support rods and pull rods are respectively connected to the ends of the two cross bars that are away from each other, and the third set of support rods and pull rods are simultaneously connected to the ends of the two cross bars that are close to each other, and two rope rings are respectively installed on the two cross bars to form two rappelling channels.

[0012] The beneficial effects of the present invention are:

[0013] The device is installed above the cabin door outside the helicopter cabin, does not occupy the space inside the cabin, and does not interfere with the cabin door; the device has a high fault tolerance rate through the design of adjustable length of the strut and pull rod and the design of the centripetal bearing, which can meet the assembly requirements of the installation interface under various angles and size deviations, and is convenient for loading and unloading; the strut and pull rod form a stable triangular support for the cross bar, which can transmit the force of the cross bar to the strut and pull rod, avoiding any component bearing all the loads alone, and is reliable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of a frame-type rappelling device with adjustable interfaces according to an embodiment of the present invention.

[0015] Figure 2 Schematic diagram of the pull rod in an embodiment of the present invention.

[0016] Figure 3 Schematic diagram of a support rod in an embodiment of the present invention.

[0017] In the figure: 1-cross bar; 2-rope hanging ring; 3-pull rod; 31-pull cylinder; 32-pull rod adjustment section; 33-radial bearing; 34-locking nut; 4-support rod; 41-support cylinder; 42-support rod adjustment section; 43-radial bearing; 44-connector; 45-locking nut; 5-quick release pin; 6-connecting rope. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] like Figures 1 to 3As shown, an interface-adjustable frame-type rappelling device is installed above the helicopter cabin door, including a suspended cross bar 1, a rope hanging ring 2 is installed on the cross bar 1, and several groups of length-adjustable struts 4 and pull rods 3 are provided along the cross bar 1. One end of the strut 4 is a radial bearing 43 and is hingedly installed on the interface above the helicopter cabin door through a quick-release pin 5, and the other end is fixedly connected to the cross bar 1 obliquely upward. Both ends of the pull rod 3 are radial bearings 33 and one end is hingedly installed on the interface above the helicopter cabin door through a quick-release pin 5, and the other end is hinged to the upper end of the strut 4 in the same group. The struts 4 and pull rods 3 in the same group form a triangle on the side of the cross bar 1 close to the helicopter. The strut 4 provides supporting force and the pull rod 3 provides pulling force. The device is installed above the cabin door outside the helicopter cabin, does not occupy the space inside the cabin, and does not interfere with the cabin door; the device has a high fault tolerance rate through the adjustable length design of the strut 4 and the pull rod 3 and the design of the centripetal bearing, can meet the assembly of the installation interface under various angles and size deviations, and is convenient for loading and unloading; the strut 4 and the pull rod 3 form a triangular and stable support for the cross bar 1, which can transmit the force of the cross bar 1 to the strut 4 and the pull rod 3, avoiding any component from bearing all the loads alone, and is reliable and safe.

[0020] like Figure 2 As shown, in this embodiment, the pull rod 3 includes a pull cylinder 31, a pull rod adjustment section 32 threadedly connected to both ends of the pull cylinder 31, and a radial bearing 33 located at the end of the pull rod adjustment section 32. The radial bearing 33 at one end of the pull rod 3 is hingedly mounted on the interface above the helicopter cabin door through a quick-release pin 5, and the radial bearing 33 at the other end is hingedly connected to the upper end of the support rod 4 of the same group through a bolt. The axial length can be adjusted by rotating the pull rod adjustment section 32 by an integer multiple of half a turn, which is convenient and reliable to operate. A locking nut 34 is provided on the pull rod adjustment section 32. After adjusting the length, the locking nut 34 can be used to lock the position, which is more stable and reliable.

[0021] like Figure 3 As shown, in this embodiment, the strut 4 includes a strut tube 41, a strut adjustment section 42 threadedly connected to the lower end of the strut 41, a radial bearing 43 located at the end of the strut adjustment section 42, and a connector 44 located at the upper end of the strut 41. The radial bearing 43 at the lower end of the strut 4 is hingedly mounted on the interface above the helicopter cabin door through a quick-release pin 5. The connector 44 is sleeved on the cross bar 1 and locked. The axial length can be adjusted by rotating the strut adjustment section 42 by an integer multiple of half a turn, which is easy and reliable to operate. A locking nut 45 is provided on the strut adjustment section 42. After adjusting the length, the locking nut 45 can be used to lock the position, which is more stable and reliable.

[0022] like Figures 1 to 3 As shown, in this embodiment, the quick-release latch 5 is connected to the corresponding support rod 4 or pull rod 3 through a connecting rope 6 to avoid being stored separately and easily lost.

[0023] like Figure 1As shown, in this embodiment, the cross bar 1 is extended in two sections, two groups of support rods 4 and pull rods 3 are respectively connected to the ends of the two cross bars 1 that are away from each other, and the third group of support rods 4 and pull rods 3 are simultaneously connected to the ends of the two cross bars 1 that are close to each other, and two rope hanging rings 2 are respectively installed on the two cross bars 1 to form two rappelling channels.

[0024] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A frame-type rappelling device with an adjustable interface, characterized by: It is installed above the helicopter cabin door, including a suspended crossbar with a rope hanging ring installed on the crossbar. Several groups of length-adjustable struts and pull rods are provided along the crossbar. One end of the strut is a centripetal bearing and is hingedly mounted on the interface above the helicopter cabin door through a quick-release pin, and the other end is fixedly connected to the crossbar obliquely upward. Both ends of the pull rod are centripetal bearings and one end is hingedly mounted on the interface above the helicopter cabin door through a quick-release pin, and the other end is hinged to the upper end of the strut in the same group. The struts and pull rods in the same group form a triangle on the side of the crossbar close to the helicopter, and the struts provide supporting force , the pull rod provides pulling force; the strut includes a strut tube, a strut adjustment section threadedly connected to the lower end of the strut tube, a radial bearing at the end of the strut adjustment section, and a connector at the upper end of the strut tube. The radial bearing at the lower end of the strut is hingedly mounted on the interface above the helicopter cabin door through a quick-release pin, and the connector is put on the cross bar and locked; the cross bar is extended in two sections, and two groups of struts and pull rods are respectively connected to the ends of the two cross bars away from each other, and the third group of struts and pull rods are simultaneously connected to the ends of the two cross bars close to each other, and two rope rings are respectively installed on the two cross bars to form two rappelling channels.

2. The interface-adjustable frame-type rappelling device according to claim 1, characterized in that: The pull rod includes a pull cylinder, a pull rod adjustment section threadedly connected to both ends of the pull cylinder, and a radial bearing located at the end of the pull rod adjustment section. The radial bearing at one end of the pull rod is hingedly installed on the interface above the helicopter cabin door through a quick-release pin, and the radial bearing at the other end is hinged to the upper end of the support rod of the same group through bolts.

3. The interface-adjustable frame-type rappelling device according to claim 2, characterized in that: A locking nut is provided on the pull rod adjusting section.

4. The interface-adjustable frame-type rappelling device according to claim 1, characterized in that: A locking nut is provided on the support rod adjustment section.

5. The interface-adjustable frame-type rappelling device according to claim 1, characterized in that: The quick-release latch is connected to the corresponding support rod or pull rod through a connecting rope.

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