Air supply pipe joint mounting equipment and special trolley for airplane ground air conditioner

Abstract

The utility model relates to the technical field of airplane ground air conditioner auxiliary equipment, in particular to air supply pipe joint mounting equipment and a trolley special for an airplane ground air conditioner. The air supply pipe joint installation equipment comprises a walking mechanism and a lifting device, the walking mechanism comprises a supporting base and walking wheels, the walking wheels are installed below the supporting base, the lifting device is arranged on the supporting base, the lifting device is provided with a fixing part, and the fixing part is used for containing an air supply pipe joint; the lifting device can drive the air supply pipe connector to move to the ventilation connecting position of the cabin so that the air supply pipe connector can be connected with the ventilation connecting position of the cabin. During use, a worker does not need to lift the air supply pipe joint, the labor intensity is reduced, meanwhile, the air supply pipe joint is driven to move through movement of the walking mechanism, the butt joint difficulty can be reduced, and the operation safety is also improved.

Description

Technical Field

[0001] This application relates to the technical field of aircraft ground air conditioning auxiliary equipment, and particularly to an installation device for an air supply pipe joint and a special trolley for aircraft ground air conditioning. Background Art

[0002] When a civil aviation aircraft is parked on the apron or under maintenance in a maintenance workshop, it is necessary for the aircraft ground air conditioning unit to send processed fresh air into the aircraft. When connecting the air supply hose of the aircraft ground air conditioning unit to the air inlet of the aircraft cabin, an air supply pipe joint is required. One end of the air supply pipe joint is connected to the air supply hose, and the other end of the air supply pipe joint is connected to the connection part of the air inlet of the aircraft cabin.

[0003] During actual use, on-site staff need to hold up the heavy air supply pipe joint and fix the buckle of the air supply pipe joint to the connection part of the air duct in the cabin. In this process, the labor intensity of the staff is relatively high. When holding up, it is not only difficult to accurately align the installation position of the buckle, resulting in a decrease in work efficiency, but also because the surface of the air supply pipe joint is smooth, it is easy for the staff to cause the air supply pipe joint to slip and break during operation. Utility Model Content

[0004] The purpose of this application is to provide an installation device for an air supply pipe joint and a special trolley for aircraft ground air conditioning, so as to reduce the labor intensity, improve work efficiency and operation safety.

[0005] Based on the above purpose, this application provides an installation device for an air supply pipe joint, including a traveling mechanism and a lifting device. The traveling mechanism includes a support base and traveling wheels, and the traveling wheels are installed below the support base. The lifting device is arranged on the support base, and the lifting device is provided with a fixing part for placing the air supply pipe joint. The lifting device can drive the air supply pipe joint to move to the ventilation connection part of the cabin so that the air supply pipe joint is connected to the ventilation connection part of the cabin.

[0006] In an embodiment of this application, the fixing part includes a support arm, and the support arm is provided with a receiving space for placing the air supply pipe joint. The upper surface of the support arm is used to contact the lower surface of the flange edge of the air supply pipe joint.

[0007] In an embodiment of this application, the support arm includes an arc-shaped rod structure, and the inner ring surface of the arc-shaped rod structure is adapted to the circumferential outer surface of the air supply pipe joint, so that the air supply pipe joint can be placed in the receiving space surrounded by the inner ring surface of the arc-shaped rod structure.

[0008] In one embodiment of the present application, the traveling wheels are universal wheels, and / or the lifting device includes an electric push rod, a cylinder or a hydraulic cylinder.

[0009] Based on the above object, the present application further provides a special trolley for aircraft ground air conditioning, including an air supply pipe joint and the installation device of the air supply pipe joint. The air supply pipe joint is placed on the fixing part. One end of the air supply pipe joint is used to connect with the air supply hose, and the other end of the air supply pipe joint is used to connect with the ventilation connection part of the cabin to supply air into the cabin.

[0010] In one embodiment of the present application, the air supply pipe joint includes a joint body. The joint body has a first end and a second end. The air supply hose is used to be sleeved on the first end; a flange is provided at the second end of the joint body, and the flange can be lapped on the upper surface of the support arm of the fixing part.

[0011] In one embodiment of the present application, an annular groove is provided on the outer circumferential surface of the joint body;

[0012] The special trolley for aircraft ground air conditioning further includes a hoop. The hoop is limited in the annular groove and fixes the air supply hose on the joint body.

[0013] In one embodiment of the present application, the air supply pipe joint further includes a hook. The hook is provided on the flange. The hook includes a hook part, and the hook part is used to be clamped with a clamping groove at the connection part of the cabin.

[0014] In one embodiment of the present application, the air supply pipe joint further includes a detection element and a control panel. The detection element is provided on the flange. The detection element is used to detect the relative position of the connection part between the air supply pipe joint and the cabin. The control panel is connected to the traveling mechanism, so that the traveling mechanism drives the air supply pipe joint to move, and makes the hook align with and be clamped with the clamping groove.

[0015] In one embodiment of the present application, the air supply pipe joint further includes a sealing member. The sealing member is installed on the upper surface of the flange. The sealing member is provided with a first through hole and a second through hole. The first through hole corresponds to the position of the hook, and the second through hole corresponds to the position of the detection element.

[0016] In one embodiment of the present application, the air supply pipe joint further includes two handles. The joint body is provided with a plurality of installation positions, and the two handles can be installed at different installation positions.

[0017] In an embodiment of the present application, the air duct joint further includes a bolt, the installation position is a jack, a threaded hole is provided at the end of the handle, and the end of the handle is inserted into the jack; the bolt passes through the jack and is connected to the threaded hole.

[0018] In an embodiment of the present application, the air duct joint further includes a protective net, and the protective net is installed inside the joint body.

[0019] The beneficial effects of the present application mainly lie in:

[0020] When the air duct joint installation device provided by the present application is in use, the air duct joint is placed on the fixing part, and the lifting device can drive the air duct joint to move to the ventilation connection of the cabin. When the position of the air duct joint needs to be adjusted, it can be adjusted by the movement of the traveling mechanism, so as to realize the docking of the air duct joint with the ventilation connection of the cabin. In this process, the staff does not need to lift the air duct joint, reducing the labor intensity. At the same time, driving the air duct joint to move through the movement of the traveling mechanism can reduce the docking difficulty and improve the operation safety. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the air duct joint installation device provided by the embodiment of the present application;

[0023] Figure 2 It is a schematic structural diagram of the special trolley for aircraft ground air conditioning provided by the embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the special trolley for aircraft ground air conditioning provided by the embodiment of the present application connected to the air supply hose.

[0025] The descriptions of the reference numerals are as follows:

[0026] 100 - Travel mechanism; 101 - Support base; 102 - Travel wheels; 200 - Lifting device; 300 - Support arm; 301 - Arc-shaped rod structure; 302 - Connection part; 400 - Air supply pipe joint; 401 - Joint body; 4011 - Flange edge; 4012 - Annular groove; 4013 - Rim; 402 - Hook; 4021 - Hook part; 403 - Observation probe; 404 - Control panel; 405 - Seal; 406 - Handle; 407 - Protection net; 500 - Air supply hose. Detailed implementation manner

[0027] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0028] In the description of the present application, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] See Figure 1 As shown, this embodiment provides an air supply pipe joint installation device, including a travel mechanism 100 and a lifting device 200. The travel mechanism 100 includes a support base 101 and travel wheels 102. The travel wheels 102 are installed below the support base 101. The lifting device 200 is arranged on the support base 101. The lifting device 200 is provided with a fixing part for placing the air supply pipe joint 400. The lifting device 200 can drive the air supply pipe joint 400 to move to the ventilation connection of the engine room so that the air supply pipe joint 400 is connected to the ventilation connection of the engine room.

[0031] When the air duct joint installation equipment provided in this embodiment is in use, the air duct joint 400 is placed on the fixing part, and the lifting device 200 can drive the air duct joint 400 to move to the ventilation connection part of the cabin. When it is necessary to adjust the position of the air duct joint 400, it can be adjusted by the movement of the traveling mechanism 100, so as to realize the docking of the air duct joint 400 with the ventilation connection part of the cabin. In this process, the staff does not need to lift the air duct joint 400, which reduces the labor intensity. At the same time, driving the air duct joint 400 to move through the movement of the traveling mechanism 100 can reduce the docking difficulty and improve the operation safety.

[0032] In some embodiments, the traveling mechanism 100 can be moved by pushing by hand, so as to adjust the position of the air duct joint 400, so that it can be connected to the ventilation connection part of the cabin.

[0033] Exemplarily, a handrail (not shown in the figure) can be provided on the support base 101 for easy operation.

[0034] Of course, the traveling mechanism 100 can also be driven electrically.

[0035] In one embodiment, the traveling wheel 102 can be a universal wheel, which can enhance the flexibility of the movement of the traveling mechanism 100 and facilitate the precise adjustment of the position of the air duct joint 400.

[0036] In one embodiment, the lifting device 200 includes an electric push rod, a cylinder or a hydraulic cylinder.

[0037] Exemplarily, the lifting device 200 can be a cylinder. The cylinder body of the cylinder is connected to the support base 101, and the fixing part is arranged on the piston rod of the cylinder. Through the telescopic movement of the piston rod, the lifting of the fixing part is realized, and then the air duct joint 400 is driven to move towards the ventilation connection part of the cabin or driven to move away from the ventilation connection part of the cabin.

[0038] In one embodiment, the fixing part includes a support arm 300. The support arm 300 is provided with an accommodation space for placing the air duct joint 400, and the upper surface of the support arm 300 is used to contact the lower surface of the flange 4011 of the air duct joint 400.

[0039] When in use, the air duct joint 400 can be placed into the accommodation space from top to bottom. At this time, the upper surface of the support arm 300 contacts the lower surface of the flange 4011 of the air duct joint 400. That is to say, the flange 4011 of the air duct joint 400 is erected on the support arm 300 to prevent the air duct joint 400 from falling.

[0040] It should be understood that, depending on the structure of the support arm 300, the accommodation space can be an open space with both ends open, or the internal space of a cylindrical structure with an open upper end.

[0041] In some embodiments, referring to Figure 1 as shown, the support arm 300 includes an arc-shaped rod structure 301. The inner ring surface of the arc-shaped rod structure 301 is adapted to the circumferential outer surface of the air duct joint 400, so that the air duct joint 400 can be placed in the accommodation space surrounded by the inner ring surface of the arc-shaped rod structure 301.

[0042] The support arm 300 further includes a connecting portion 302. One end of the connecting portion 302 is connected to the lifting device 200, and the other end of the connecting portion 302 can be connected to the middle position of the arc-shaped rod structure 301. The arc-shaped rod structure 301 has two free ends, and there is a gap between the two free ends to form an opening. The width of the opening is smaller than the outer diameter of the air duct joint 400; the opening can be used to avoid the air supply hose 500 connected to the air duct joint 400 and the structure on the outer surface of the air duct joint 400, so as to facilitate placing the air duct joint 400 in the accommodation space.

[0043] Referring to Figure 2 and Figure 3 as shown, this embodiment also provides a special trolley for aircraft ground air conditioning, including the air duct joint 400 and the air duct joint installation device provided in this embodiment. The air duct joint 400 is placed on the fixing portion. One end of the air duct joint 400 is used to connect with the air supply hose 500, and the other end of the air duct joint 400 is used to connect with the ventilation connection of the cabin to supply air to the cabin.

[0044] For the special trolley for aircraft ground air conditioning provided in this embodiment, due to the use of the air duct joint installation device provided in this embodiment, during use, by the movement of the traveling mechanism 100, the air duct joint 400 is moved below the ventilation connection of the cabin, and then the lifting device 200 drives the air duct joint 400 to move to the ventilation connection of the cabin. When it is necessary to adjust the position of the air duct joint 400, it can be adjusted by the movement of the traveling mechanism 100, so as to realize the docking of the air duct joint 400 with the ventilation connection of the cabin. In this process, the staff does not need to lift the air duct joint 400, reducing the labor intensity. At the same time, driving the air duct joint 400 to move by the movement of the traveling mechanism 100 can reduce the docking difficulty and improve the operation safety.

[0045] In one embodiment, referring to Figure 2 and Figure 3As shown, the air supply pipe joint 400 includes a joint body 401. The joint body 401 has a first end and a second end. The air supply hose 500 is sleeved on the first end; a flange 4011 is provided at the second end of the joint body 401, and the flange 4011 can be lapped on the upper surface of the support arm 300 of the fixing part.

[0046] Exemplarily, the joint body 401 is generally a hollow cylindrical structure with openings at both ends. The air supply hose 500 can be directly sleeved and fixed on the first end of the joint body 401, and then the joint body 401 is placed in the accommodation space of the support arm 300. The air supply hose 500 enters the accommodation space from the opening. When the traveling mechanism 100 moves from the storage place of the air supply hose 500 to the ventilation connection of the cabin, it can drive the air supply hose 500 to move together.

[0047] Exemplarily, the air supply hose 500 is wound around the rotating shaft at the storage place. When the traveling mechanism 100 moves, it can drive the air supply hose 500 to be released from the rotating shaft.

[0048] In one embodiment, an annular groove 4012 is provided on the circumferential outer surface of the joint body 401; the special trolley for aircraft ground air conditioner further includes a hoop (not shown in the figure). The hoop is limited in the annular groove 4012 and fixes the air supply hose 500 on the joint body 401, which can ensure a tight connection and is not easy to fall off.

[0049] Exemplarily, the annular groove 4012 can be formed by necking down the joint body 401.

[0050] In one embodiment, the air supply pipe joint 400 further includes a hook 402. The hook 402 is provided on the flange 4011. The hook 402 includes a hook portion 4021, and the hook portion 4021 is used for clamping with the card slot at the connection of the cabin.

[0051] Exemplarily, the hook portion 4021 can be aligned with the card slot first, and then the lifting device 200 drives the air supply pipe joint 400 to rise, so that the hook portion 4021 is inserted into the card slot. Then, through the movement of the traveling mechanism 100, the air supply pipe joint 400 is driven to rotate around its own axis, so that the hook portion 4021 is locked in the card slot, reducing the risk of the air supply pipe joint 400 slipping off.

[0052] When the aircraft ground air conditioner unit stops supplying air, the air supply pipe joint 400 can be rotated in the reverse direction, and then the lifting device 200 drives the air supply pipe joint 400 to descend, so that the hook portion 4021 is removed from the card slot, thereby realizing the separation of the air supply pipe joint 400 from the ventilation connection of the cabin.

[0053] In this embodiment, the number of the hooks 402 is two, and the two hooks 402 are arranged oppositely along the radial direction of the joint body 401. Of course, the number and the setting position of the hooks 402 can also be adjusted according to the actual situation.

[0054] The material of the hook 402 can be metal.

[0055] In one embodiment, the air duct joint 400 further includes a detection element and a control panel 404. The detection element is arranged on the flange edge 4011 and is used to detect the relative position of the connection between the air duct joint 400 and the cabin. The control panel 404 is connected to the traveling mechanism 100 so that the traveling mechanism 100 drives the air duct joint 400 to move, and the hook 402 is aligned with and clamped to the slot.

[0056] Exemplarily, a display and operation buttons are arranged on the control panel 404. For example, the operation buttons can include a switch button, movement buttons (such as a forward movement button, a backward movement button, a left movement button, a right movement button), a lifting button, and speed regulation buttons (an acceleration button, a deceleration button), etc.

[0057] The detection element can be an observation probe 403. The number of the observation probes 403 can be multiple, and the multiple observation probes 403 are arranged at intervals along the circumferential direction of the flange edge 4011. Exemplarily, the number of the observation probes 403 is four, and the four observation probes 403 are evenly arranged at intervals along the circumferential direction of the flange edge 4011.

[0058] The observation probe 403 has an imaging function. When the hook 402 is docked with the ventilation connection of the cabin, image information from the observation probe 403 can be displayed on the display of the control panel 404, which is convenient for the operator to make necessary manual adjustments.

[0059] The observation probe 403 also has a scanning and detecting function. Exemplarily, the observation probe 403 can scan the size of the ventilation connection of the cabin. At the same time, it can also detect information such as the height of the ventilation connection of the cabin from the horizontal ground and the relative position between the ventilation connection of the cabin and the air duct joint 400.

[0060] On the one hand, the control panel 404 can control the special ground air conditioner trolley of the aircraft to perform automatic navigation and movement between the ventilation connection of the cabin of the aircraft to be flown and the storage place of the air supply hose.

[0061] Specifically, when the special trolley for aircraft ground air conditioning automatically navigates and moves from the air supply hose storage to the cabin ventilation connection of the aircraft waiting to take off, it can automatically generate a driving route from the special trolley to the cabin ventilation connection of the aircraft waiting to take off according to the specific parking position information of the aircraft waiting to take off displayed on the monitor of the control panel 404; the staff can use the switch buttons on the control panel 404 to enable the navigation and driving functions of the special trolley; since the air supply pipe joint 400 is placed in the accommodation space of the support arm 300 and the air supply hose 500 is connected to the first end of the air supply pipe joint 400, when the special trolley for aircraft ground air conditioning moves, it can simultaneously pull the air supply hose 500 and move together towards the cabin ventilation connection of the aircraft waiting to take off.

[0062] When the special trolley for aircraft ground air conditioning automatically navigates and moves from the cabin ventilation connection of the aircraft waiting to take off to the air supply hose storage, it can automatically generate a driving route from the special trolley to the air supply hose storage according to the position information of the air supply hose storage displayed on the monitor of the control panel 404; the staff can use the switch buttons on the control panel 404 to enable the navigation and driving functions of the special trolley.

[0063] On the other hand, the control panel 404 can also control the special trolley for aircraft ground air conditioning to realize the self-locking and unlocking functions between the hook 402 on the air supply pipe joint 400 and the slot at the cabin ventilation connection.

[0064] Specifically, when realizing the self-locking function between the hook 402 and the cabin ventilation connection, the operator can control the movement of the traveling mechanism 100 by using the operation buttons on the control panel 404 according to the data transmitted by the observation probe 403 to the control panel, so that the axis of the air supply pipe joint 400 is accurately aligned with the central point of the cabin ventilation connection; after the axis of the air supply pipe joint 400 is accurately aligned with the central point of the cabin ventilation connection, the operator can use the control panel 404 to operate the lifting device 200 to rise and carry out the docking work between the ventilation connector and the cabin ventilation connection; after the air supply pipe joint 400 is connected to the cabin ventilation connection, the operator can use the movement buttons on the control panel 404 to realize the self-locking function between the hook 402 on the ventilation connector and the slot at the cabin ventilation connection.

[0065] After the hook 402 and the slot are locked, the signal is fed back through the observation probe 403 and transmitted to the aircraft ground air conditioning unit, and the aircraft ground air conditioning unit receives the signal and starts to supply cold air into the cabin.

[0066] When the aircraft ground air-conditioning unit stops supplying air, the operator can use the operation buttons on the control panel 404 to unlock the hook 402 from the connection with the cabin ventilation. After the hook 402 is unlocked from the connection with the cabin ventilation, the operator can use the lifting buttons on the control panel 404 to control the lifting device 200 to lower the height of the air supply pipe joint 400.

[0067] In one embodiment, the air supply pipe joint 400 further includes a seal 405. The seal 405 is installed on the upper surface of the flange 4011. The seal 405 is provided with a first through hole and a second through hole. The first through hole corresponds to the position of the hook 402, and the second through hole corresponds to the position of the detection element. By providing the seal 405, the sealing performance and stability of the connection between the air supply hose 500 and the cabin can be improved.

[0068] Exemplarily, the seal 405 can be an O-ring or a gasket.

[0069] By providing the first through hole on the seal 405, and the first through hole corresponding to the position of the hook 402, it is ensured that the hook 402 passes through the first through hole.

[0070] By providing the second through hole on the seal 405, and the second through hole corresponding to the position of the detection element, it is ensured that the seal 405 does not block the detection element and the detection element can work properly.

[0071] In one embodiment, the air supply pipe joint 400 further includes two handles 406. The joint body 401 is provided with a plurality of mounting positions, and the two handles 406 can be mounted on different mounting positions.

[0072] Exemplarily, the handles 406 are provided on the circumferential side wall of the joint body 401, so that it does not interfere with the docking of the air supply pipe joint 400 with the ventilation connection of the cabin.

[0073] By providing two handles 406 and mounting the two handles 406 on different mounting positions, when moving the air supply pipe joint 400, for example, when placing the air supply pipe joint 400 in the accommodation space of the support arm 300, it will be relatively labor-saving.

[0074] The material of the handle 406 is metal. For example, the handle 406 can be made of a metal sheet metal part.

[0075] In one embodiment, the air supply pipe joint 400 further includes a bolt. The mounting position is a jack, and the end of the handle 406 is provided with a threaded hole. The end of the handle 406 is inserted into the jack; the bolt passes through the jack and is connected to the threaded hole.

[0076] Insert the end of the handle 406 into the jack, then pass the bolt through the inside of the joint body 401 and connect it to the threaded hole at the end of the handle 406. After tightening the bolt, the head of the bolt can abut against the inner wall of the joint body 401, thereby fixing the handle 406.

[0077] In one embodiment, as shown in Figure 3 the air supply pipe joint 400 further includes a protective net 407, and the protective net 407 is installed inside the joint body 401. By providing the protective net 407, impurities, rats, snakes, etc. in the air supply hose 500 can be prevented from entering the engine room.

[0078] Exemplarily, a flange 4013 is provided on the inner wall of the joint body 401, and the protective net 407 is installed above the flange 4013 through fasteners. Of course, the protective net 407 can also be installed below the flange 4013 through fasteners.

[0079] The fasteners can include fastening bolts and nuts. Exemplarily, the fastening bolts pass through the mounting holes on the protective net 407 and the mounting holes on the flange 4013, and then the nuts are tightened on the fastening bolts. Of course, threaded holes can also be provided on the flange 4013. At this time, the fasteners can be fastening bolts, and the fastening bolts pass through the mounting holes on the protective net 407 and are connected to the threaded holes on the flange 4013.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An air supply pipe joint installation device, characterized in that: It includes a walking mechanism and a lifting device, the walking mechanism includes a support seat and walking wheels, the walking wheels are installed below the support seat, the lifting device is arranged on the support seat, the lifting device is provided with a fixing part, and the fixing part is used to place the air supply pipe joint; the lifting device can drive the air supply pipe joint to move to the ventilation connection of the cabin so that the air supply pipe joint is connected to the ventilation connection of the cabin.

2. The air supply pipe joint installation device according to claim 1, characterized in that: The fixing portion comprises a support arm, the support arm is provided with a receiving space for placing the air supply pipe joint, and the upper surface of the support arm is used to contact the lower surface of the flange edge of the air supply pipe joint.

3. The air supply pipe joint installation device according to claim 2, characterized in that: The support arm comprises an arc-shaped rod-shaped structure, the inner annular surface of which matches the circumferential outer surface of the air supply pipe joint, so that the air supply pipe joint can be placed in the accommodation space surrounded by the inner annular surface of the arc-shaped rod-shaped structure.

4. The air supply pipe joint installation device according to any one of claims 1 to 3, characterized in that: The travel wheel is a universal wheel, and / or the lifting device includes an electric push rod, a cylinder or a hydraulic cylinder.

5. A special trolley for aircraft ground air conditioning, characterized in that: It comprises an air supply pipe joint and an air supply pipe joint installation device as described in any one of claims 1 to 4, wherein the air supply pipe joint is placed on the fixing portion, one end of the air supply pipe joint is used to be connected to an air supply hose, and the other end of the air supply pipe joint is used to be connected to a ventilation connection of a cabin to supply air into the cabin.

6. The aircraft ground air conditioning special vehicle according to claim 5, characterized in that: The air supply pipe joint includes a joint body, the joint body has a first end and a second end, and the air supply hose is used to be mounted on the first end; the second end of the joint body is provided with a flange edge, and the flange edge can overlap the upper surface of the support arm of the fixed part.

7. The aircraft ground air conditioning dedicated trolley according to claim 6, characterized in that: The circumferential outer surface of the joint body is provided with an annular groove; The aircraft ground air conditioning special trolley also includes a clamp, which is limited to the annular groove and fixes the air supply hose on the joint body.

8. The aircraft ground air conditioning dedicated trolley according to claim 6, characterized in that: The air supply pipe joint also includes a hook, which is arranged on the flange edge. The hook includes a hook portion, and the hook portion is used to be engaged with a slot at a connection point of the cabin.

9. The aircraft ground air conditioning dedicated trolley according to claim 8, characterized in that: The air supply pipe joint also includes a detection element and a control panel. The detection element is arranged on the flange edge. The detection element is used to detect the relative position of the air supply pipe joint and the connection between the cabin. The control panel is connected to the walking mechanism so that the walking mechanism drives the air supply pipe joint to move and aligns and engages the hook with the slot.

10. The aircraft ground air conditioning dedicated trolley according to claim 9, characterized in that: The air supply pipe joint also includes a sealing member, which is installed on the upper surface of the flange edge. The sealing member is provided with a first through hole and a second through hole, wherein the first through hole corresponds to the position of the hook, and the second through hole corresponds to the position of the detection element.

11. The aircraft ground air conditioning dedicated vehicle according to any one of claims 6 to 10, characterized in that: The air supply pipe joint also includes two handles, and the joint body is provided with a plurality of installation positions, and the two handles can be installed in different installation positions.

12. The aircraft ground air conditioning dedicated trolley according to claim 11, characterized in that: The air supply pipe joint also includes a bolt, the installation position is a socket, the end of the handle is provided with a threaded hole, the end of the handle is inserted into the socket; the bolt passes through the socket and is connected to the threaded hole.

13. The aircraft ground air conditioning dedicated vehicle according to any one of claims 6 to 10, characterized in that: The air supply pipe joint also includes a protective net, which is installed inside the joint body.

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