CN-117006758-B - Liquid cooling back suction device for aviation environmental control air conditioner maintenance

CN117006758BCN 117006758 BCN117006758 BCN 117006758BCN-117006758-B

Abstract

The invention relates to a liquid cooling back suction device for aviation environment-controlled air conditioner maintenance, which comprises a boarding bridge, wherein an air conditioning unit is detachably arranged below the boarding bridge through a connecting assembly, a refrigerant recovery assembly is arranged between a four-way valve and a condenser of the air conditioning unit, so that when the air conditioning unit is required to be maintained or disassembled, the refrigerant is recovered into the refrigerant recovery assembly by a compressor, three unit fixing mechanisms are arranged, each unit fixing mechanism comprises two longitudinal beams and a cross beam connected between the two longitudinal beams, the cross beams of the unit fixing mechanisms at the two sides are slidably arranged below an installation seat, the air conditioning unit is fixedly arranged at the lower ends of the two longitudinal beams, the connecting positions of a first unit fixing mechanism in the middle and the air conditioning unit correspond to the gravity center of the air conditioning unit, the connecting positions of a second unit fixing mechanism at the two sides and the air conditioning unit correspond to the two sides of the air conditioning unit respectively, and the whole air conditioning unit is enabled to achieve moment balance by adjusting the positions of the second unit fixing mechanisms at the two sides.

Inventors

XU KAISONG
Xin Houyun
SONG DONG
CAO HAORAN
WANG XIAO
GE JUN
YUE TING
Zheng Shaokan
SHI XIAOWEI
REN HONGLI

Assignees

芜湖天航装备技术有限公司

Dates

Publication Date: 20260505
Application Date: 20230728

Claims (7)

1. The liquid cooling and sucking device for aviation environmental control air conditioner maintenance comprises a boarding bridge, wherein an air conditioning unit is detachably arranged below the boarding bridge through a connecting assembly; A refrigerant recovery assembly is arranged between the four-way valve and the condenser of the air conditioning unit, so that when the air conditioning unit needs to be maintained or disassembled, the refrigerant is recovered into the refrigerant recovery assembly by the compressor; the connecting assembly comprises a mounting seat and a unit fixing mechanism, wherein the mounting seat is mounted on the lower end surface of the boarding corridor bridge, and the unit fixing mechanism is mounted below the mounting seat and is used for mounting an air conditioning unit; the air conditioner unit is characterized in that three unit fixing mechanisms are arranged, each unit fixing mechanism comprises two longitudinal beams and a cross beam connected between the two longitudinal beams, the cross beams of the unit fixing mechanisms on two sides are slidably arranged below the mounting seat, and the air conditioner unit is fixedly arranged at the lower ends of the two longitudinal beams; the connecting positions of the first unit fixing mechanisms in the middle and the air conditioning units correspond to the gravity centers of the air conditioning units, the connecting positions of the second unit fixing mechanisms on the two sides and the air conditioning units correspond to the two sides of the air conditioning units respectively, and the moment balance of the whole air conditioning unit is achieved by adjusting the positions of the second unit fixing mechanisms on the two sides; the two sides of the mounting seat are provided with rails fixedly arranged on the lower end surface of the boarding bridge, and circular rail grooves are formed in the rails; the upper end face of the cross beam is fixedly provided with a sliding block, and the shape and the size of the sliding block are the same as those of the track groove; The lower end face of the mounting seat is provided with a plurality of clamping teeth, the upper end face of the cross beam is fixedly provided with mounting teeth, and the shape and the size of the mounting teeth are matched with those of the clamping teeth; the part of the clamping teeth is configured to extend out of the lower end surface of the mounting seat or retract into the lower end surface of the mounting seat in an elastic telescopic manner; When the air conditioner unit is installed, part of the clamping teeth are in a first elastic state, and the rest of the clamping teeth are in a rigid state; when the air conditioner unit is disassembled, part of the clamping teeth are in a second elastic state; the clamping teeth are triangular teeth and comprise small inclined planes and large inclined planes, and the inclination angles of the small inclined planes are smaller than those of the large inclined planes; When the air conditioning unit is disassembled, the large inclined plane is the stressed plane; the elastic modulus of the clamping teeth in the second elastic state is smaller than that of the clamping teeth in the first elastic state.
2. The liquid cooling and sucking device for aviation environmental control air conditioner maintenance according to claim 1, wherein the lower end surface of the mounting seat is also provided with a mounting groove, a plurality of clamping teeth are elastically and telescopically arranged in the mounting groove, and a first spring is arranged in the mounting groove; the upper end of the first spring is fixedly connected with the lower end face of the extrusion plate, and the lower end of the first spring is fixedly connected with the upper end face of the clamping tooth.
3. The liquid cooling and sucking device for maintenance of an aviation environment-friendly air conditioner according to claim 2, wherein when the air conditioner unit is installed, the extruding plate is in a low position, and the plurality of clamping teeth are in a first elastic state; when the air conditioning unit is disassembled, the extrusion plate is in a high position, and the clamping teeth are in a second elastic state.
4. The liquid cooling and sucking device for aviation environmental control air conditioner maintenance according to claim 2 or 3, wherein the right side of the extruding plate is configured as a wedge surface, the right side of the mounting seat is provided with a positioning block, and the left side of the positioning block is also configured as a wedge surface; The right side of the mounting seat is also provided with a positioning hole, and the positioning block can be slidably inserted into the positioning hole and can be fixed on the mounting seat through a bolt.
5. The liquid cooling and sucking device for maintenance of an aviation environment-controlled air conditioner according to claim 4, wherein when the air conditioner unit is installed, the positioning block is in an installation state, the extrusion plate is in a low position, and the plurality of clamping teeth are in a first elastic state; When the air conditioning unit is disassembled, the positioning block is in a disassembling state, the extrusion plate is in a high position, and the plurality of clamping teeth are in a second elastic state.
6. The liquid cooling and sucking device for maintenance of an aviation environment-controlled air conditioner according to claim 1, wherein a mounting seat adjusting unit is arranged on the lower end face of the boarding bridge, and the mounting seat adjusting unit is connected with the lower ends of mounting seats on two sides.
7. The liquid cooling and sucking device for maintenance of aviation environment-controlled air conditioner of claim 6, wherein the lower end of the boarding bridge is provided with a first waist-shaped hole, the mounting seat is provided with a second waist-shaped hole, and the threaded fastener is used for fixing the mounting seat and the boarding bridge together through the first waist-shaped hole and the second waist-shaped hole.

Description

Liquid cooling back suction device for aviation environmental control air conditioner maintenance Technical Field The invention belongs to the technical field of aviation aircrafts, and particularly relates to a liquid cooling back suction device for aviation environmental control air conditioner maintenance. Background The aircraft ground air conditioning unit is equipment for providing fresh air with proper temperature for an aircraft when the engine of the aircraft is stopped, and is of an integral structure due to the application object and the special use scene, namely all components for realizing functions are in one compartment body, and the aircraft ground air conditioning unit is divided into a vehicle-mounted movable type, a floor fixed type, a hanging type and the like according to different use modes. In order to solve the leakage problem of the refrigerant of the air conditioning unit during disassembly and maintenance, a refrigerant recovery assembly is arranged between the four-way valve and the condenser, so that the refrigerant is recovered into the refrigerant recovery assembly by the compressor when the air conditioning unit is required to be repaired or disassembled, the recovery proportion of the refrigerant in the reflux of the air conditioning unit is improved, and the refrigerant leakage during disassembly or maintenance of the air conditioning unit is reduced. For the hanging type aircraft ground air conditioning unit, the air conditioning unit needs to be detached from the boarding bridge when the aircraft ground air conditioning unit is detached or maintained. However, when the existing aircraft ground air conditioner sets are hung, the aircraft ground air conditioner sets are fixedly installed on boarding bridges through bolts, equipment is required to hang the air conditioner sets in the whole installation process, time and labor are wasted in the process of assembling all bolts, and the installation position of the air conditioner sets cannot be conveniently adjusted. In addition, the existing hanging type aircraft ground air conditioning unit also has a lifting space in the aspect of guaranteeing the balance and stability of missile installation, and the stress of each hanging component has an unbalanced problem. Therefore, there is a need for a liquid cooling and suction device for maintenance of an aviation environment-friendly air conditioner, which can solve the above problems. Disclosure of Invention In order to solve the problems, the invention provides a liquid cooling and sucking device for aviation environmental control air conditioner maintenance, which comprises a boarding bridge, wherein an air conditioning unit is detachably arranged below the boarding bridge through a connecting assembly; A refrigerant recovery assembly is arranged between the four-way valve and the condenser of the air conditioning unit, so that when the air conditioning unit needs to be maintained or disassembled, the refrigerant is recovered into the refrigerant recovery assembly by the compressor; the connecting assembly comprises a mounting seat and a unit fixing mechanism, wherein the mounting seat is mounted on the lower end surface of the boarding corridor bridge, and the unit fixing mechanism is mounted below the mounting seat and is used for mounting an air conditioning unit; the unit fixing mechanisms are three, each unit fixing mechanism comprises two longitudinal beams and a cross beam connected between the two longitudinal beams, the cross beams of the unit fixing mechanisms on two sides are slidably arranged below the mounting seats, and the air conditioning unit is fixedly arranged at the lower ends of the two longitudinal beams; The connecting positions of the first unit fixing mechanisms in the middle and the air conditioning units correspond to the gravity centers of the air conditioning units, the connecting positions of the second unit fixing mechanisms on the two sides and the air conditioning units correspond to the two sides of the air conditioning units respectively, and the moment balance of the whole air conditioning unit is achieved by adjusting the positions of the second unit fixing mechanisms on the two sides. Further, the two sides of the mounting seat are provided with rails fixedly arranged on the lower end face of the boarding bridge, and circular rail grooves are formed in the rails; the upper end face of the cross beam is fixedly provided with a sliding block, and the shape and the size of the sliding block are the same as those of the track groove. Further, a plurality of clamping teeth are arranged on the lower end face of the mounting seat, mounting teeth are fixedly arranged on the upper end face of the cross beam, and the shape and the size of the mounting teeth are matched with those of the clamping teeth; the part of the clamping teeth is configured to extend out of the lower end surface of the mounting seat or retract into the lower end surface of the