Ground well claw type connector with pneumatic braking device

Abstract

The utility model relates to a ground well claw-type joint with a pneumatic brake device, which comprises a ground well joint wheel carrier and a plurality of groups of roller devices, and the roller devices are connected with the ground well joint wheel carrier. The roller device comprises a pneumatic brake device; a universal corner wheel carrier; walking wheels and brake pads; an air pipe is arranged on the ground well connector wheel carrier, and the pneumatic braking device is communicated with the air pipe. Free sliding of the ground well claw type connector can be limited, the problem that an airplane, an airplane engine or other airport equipment is scratched due to free sliding of the ground well claw type connector is solved, the possibility of accidents of an airport is effectively reduced, and economic losses are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft refueling vehicle accessory devices, in particular to a ground well claw type joint provided with a pneumatic braking device. Background Art

[0002] Aircrafts are often refueled with pipeline refueling vehicles, which are equipped with key components such as filter separators, pressure control devices, flow meters, refueling hoses, and ground well claw joints. Among them, the ground well claw joint is installed at the head end of the refueling hose and is used to connect the ground well plug.

[0003] The ground well claw joint bracket adopts a design with freely movable walking wheels. After completing the aircraft refueling operation, the refueler will disengage the ground well claw joint and the ground well bolt and place it next to the ground well bolt for subsequent operations. However, since the apron pavement itself has a certain slope, and the ground well claw joint and the connecting hose are both equipped with universal wheels without locking devices, this may cause the entire body to move under the action of external forces, and may even hit other airport equipment, affect other vehicles, cause apron accidents, and cause economic losses.

[0004] To solve this problem, a ground-well claw joint equipped with a pneumatic brake device was proposed, which can effectively prevent the ground-well claw joint from accidentally moving when parked. The pneumatic brake device can be implemented by the refueler through simple operations. Once the refueling operation is completed, the refueler can activate the brake device through the operating device to ensure that the ground-well claw joint is firmly parked on the ground without interference from external forces. The application of this technology can significantly improve the safety of apron operations, reduce the risk of accidents, and reduce economic losses, which has positive significance for the safe operation of airports. Utility Model Content

[0005] The utility model aims to provide a ground well claw type joint provided with a pneumatic brake device, which can solve the problem that the ground well claw type joint scrapes the aircraft engine and hits the important equipment and facilities of the apron due to sliding.

[0006] The utility model is realized by the following technical scheme: a ground well claw type joint provided with a pneumatic brake device, which comprises a ground well joint wheel frame and a plurality of roller devices, wherein the roller devices are connected to the ground well joint wheel frame;

[0007] The roller device comprises:

[0008] A pneumatic brake device is connected to the ground well joint wheel frame;

[0009] A universal angle wheel frame is arranged below the ground well joint wheel frame and is rotatably connected to the ground well joint wheel frame;

[0010] A travel wheel connected to the inside of the universal angle wheel frame; and

[0011] The brake pad is arranged above the traveling wheel and is rotatably connected to the lower part of the pneumatic brake device;

[0012] An air pipe is arranged on the ground well joint wheel frame, and the pneumatic brake device is communicated with the air pipe.

[0013] Compared with the previous technology, the beneficial effects of the utility model are:

[0014] 1. It can limit the free sliding of the ground well claw joint, solve the problem of scratching the aircraft, aircraft engine or other airport equipment due to the free sliding of the ground well claw joint, avoid it from hitting important equipment and facilities on the apron, effectively reduce the possibility of accidents at the airport, and avoid economic losses.

[0015] 2. The unique double-layer thrust ball bearing design uses a structure in which the rotating layer is fixedly connected to the universal angle wheel frame and the universal angle wheel frame abuts against the brake pad, so that the universal angle wheel frame can rotate around the double-layer thrust ball bearing while driving the traveling wheel and the brake pad to rotate together.

[0016] 3. Equipped with a three-way valve and a regulating valve, one air source can control multiple pneumatic brake devices, and the structure is more refined.

[0017] 4. The return spring inside the pneumatic brake device can assist the cylinder and brake pads to reset and release the brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is the effect diagram when the brake pads are not in contact with the running wheels;

[0020] Figure 3 This is the effect diagram when the brake pad contacts the travel wheel.

[0021] Explanation of reference numerals: 11 ground well joint wheel frame, 111 three-way valve, 12 pneumatic brake device, 121 pneumatic shaft, 122 cylinder, 123 rotating connector, 124 pneumatic head, 124-1 threaded rod, 124-2 locking nut, 125 double-layer thrust ball bearing, 125-1 upper seat ring, 125-2 upper ball layer, 125-3 rotating layer, 125-4 lower ball layer, 125-5 lower seat ring, 126 regulating valve, 13 universal angle wheel frame, 14 walking wheel, 15 brake pad, 16 air pipe, 17 switch valve, 18 fixing nut. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with the accompanying drawings, but the protection content of the utility model is not limited to the following:

[0023] like Figures 1 to 3 As shown, a ground well claw type joint provided with a pneumatic brake device comprises a ground well joint wheel frame 11 and a plurality of roller devices, wherein the roller devices are connected to the ground well joint wheel frame 11;

[0024] The roller device comprises:

[0025] A pneumatic brake device 12 is connected to the ground well joint wheel frame 11;

[0026] The universal angle wheel frame 13 is arranged below the ground well joint wheel frame 11 and is rotatably connected to the ground well joint wheel frame 11;

[0027] The travel wheel 14 is connected to the inside of the universal angle wheel frame 13; and

[0028] The brake pad 15 is arranged above the running wheel 14 and is rotatably connected to the lower part of the pneumatic brake device 12;

[0029] An air pipe 16 is arranged on the underground well joint wheel frame 11 , and the pneumatic brake device 12 is communicated with the air pipe 16 .

[0030] The utility model solves the problem that the free sliding of the ground well claw type joint causes scratching of the aircraft, aircraft engine or other airport equipment, thereby reducing the possibility of accidents at the airport and avoiding economic losses.

[0031] The pneumatic brake device 12 comprises:

[0032] The pneumatic shaft body 121 passes through the ground-well joint wheel frame 11 and is fixed on the ground-well joint wheel frame 11. The pneumatic shaft body 121 has a cavity that passes through from top to bottom.

[0033] The cylinder 122 is disposed at the upper portion of the cavity, and the upper end of the cylinder 122 is connected and communicated with the air pipe 16;

[0034] The rotating connecting member 123 is disposed at the lower part of the cavity, and the rotating connecting member 123 is axially rotatably connected to the movable end of the cylinder 122;

[0035] The pneumatic head 124 is fixedly connected to the lower end of the rotating connecting member 123 , and the brake pad 15 is fixedly connected to the pneumatic head 124 .

[0036] The roller device is provided with two groups;

[0037] The ground well joint wheel frame 11 is also provided with a three-way valve 111, and the three ports of the three-way valve 111 are connected to the air pipe 16;

[0038] The two cylinders 122 are respectively connected to the two ports of the three-way valve 111 through the air pipe 16;

[0039] The air pipe 16 on the third port of the three-way valve 111 is connected to the air source and is provided with a switch valve 17 .

[0040] When braking, the switch valve 17 is opened to allow the gas to enter the cylinder 122 through the switch valve 17, the air pipe 16, the three-way valve 111, the air pipe 16, and the regulating valve 126; the cylinder 122 pushes the brake pad 15 to lock the travel wheel 14 to achieve the braking effect.

[0041] The outer circumference of the lower part of the pneumatic shaft body 121 is provided with a double-layer thrust ball bearing 125, and the double-layer thrust ball bearing 125 is arranged below the ground well joint wheel frame 11;

[0042] The double-layer thrust ball bearing 125 includes an upper race 125-1, an upper ball layer 125-2, a rotating layer 125-3, a lower ball layer 125-4 and a lower race 125-5 connected in sequence along the up-down direction;

[0043] The lower side surface of the upper race 125-1 and the upper side surface of the rotating layer 125-3 are provided with a first embedding groove for the upper ball layer 125-2 to be embedded;

[0044] The lower side surface of the rotating layer 125-3 and the upper side surface of the lower race 125-5 are provided with a second embedding groove for the lower ball layer 125-4 to be embedded;

[0045] The universal angle wheel frame 13 is fixedly connected to the rotating layer 125 - 3 .

[0046] The pneumatic head 124 includes a threaded rod 124 - 1 extending downward and two locking nuts 124 - 2 rotatably connected to the threaded rod 124 - 1 , and the brake pad 15 is connected between the two locking nuts 124 - 2 .

[0047] It should be noted that the left and right sides of the brake pad 15 are respectively in contact with the left and right side walls of the universal angle wheel frame 13. When the universal angle wheel frame 13 and the rotating layer 125-3 are able to rotate around the double-layer thrust ball bearing 125 axially, that is, when the universal angle wheel frame 13 is axially rotated around the pneumatic brake device 12, it can drive the brake pad 15 in contact therewith to rotate together, thereby changing the ordinary running wheel 14 into a universal wheel, and realizing the function of the running wheel 14 rotating relative to the ground joint wheel frame 11.

[0048] Therefore, no matter how the traveling wheel 14 rotates, the universal angle wheel frame 13 can rotate together with the brake pad 15, and starting the pneumatic brake device 12 can stop the traveling wheel 14 stably and firmly.

[0049] The outer periphery of the upper portion of the pneumatic shaft body 121 is threadedly connected with a fixing nut 18;

[0050] The outer side wall of the pneumatic shaft body 121 is provided with a variable diameter step structure which is limitedly matched with the ground well joint wheel frame 11;

[0051] The fixing nut 18 and the reducing step structure cooperate to clamp the pneumatic shaft 121 on the ground well joint wheel frame 11 to achieve fixation.

[0052] A regulating valve 126 for regulating the gas input speed is also provided between the cylinder 122 and the air pipe 16. The regulating valve can synchronize the braking of the two running wheels 14, thereby stabilizing the braking.

[0053] A pressure plate 127 is also provided between the double-layer thrust ball bearing 125 and the ground-well joint wheel frame 11, and the pressure plate 127 is penetrated by the pneumatic shaft 121. The pressure plate 127 is used to relieve the force acting on the double-layer thrust ball bearing 125 after the fixing nut 18 is tightened.

[0054] A sealing ring for enhancing confidentiality is also provided between the cylinder 122 and the rotating connecting member 123. The sealing ring structure is a conventional sealing structure, so it will not be described in detail.

[0055] A return spring is arranged inside the rotating connecting member 123. The return spring is used to assist the cylinder 122 to return, so that after the switch valve is closed, the return spring inside can retract the brake pad 15 and disengage the running wheel 14.

[0056] Although the utility model uses specific embodiments and their alternatives to illustrate and describe the utility model, it should be understood that various changes and modifications can be implemented as long as they do not deviate from the spirit and scope of the utility model. Therefore, it should be understood that except for the limitations of the attached claims and their equivalents, the utility model is not limited in any sense.

Claims

1. A ground well claw type joint provided with a pneumatic brake device, comprising a ground well joint wheel frame (11) and a plurality of roller devices, wherein the roller devices are connected to the ground well joint wheel frame (11); It is characterized in that The roller device comprises: A pneumatic brake device (12) connected to the ground well joint wheel frame (11); A universal angle wheel frame (13) is arranged below the ground well joint wheel frame (11) and is rotationally connected to the ground well joint wheel frame (11); A traveling wheel (14) connected to the interior of the universal angle wheel frame (13); and A brake pad (15) is arranged above the running wheel (14) and is rotatably connected to the lower part of the pneumatic brake device (12); An air pipe (16) is arranged on the underground well joint wheel frame (11), and the pneumatic brake device (12) is in communication with the air pipe (16).

2. A well claw type joint with a pneumatic brake device according to claim 1, characterized in that: The pneumatic brake device (12) comprises: A pneumatic shaft body (121) passes through the ground-well joint wheel frame (11) and is fixed on the ground-well joint wheel frame (11), and a cavity that passes through from top to bottom is provided inside the pneumatic shaft body (121); The cylinder (122) is arranged at the upper part of the cavity, and the upper end of the cylinder (122) is connected and communicated with the air pipe (16); A rotating connection member (123) is disposed at the lower part of the cavity, and the rotating connection member (123) is axially rotatingly connected to the movable end of the cylinder (122); The pneumatic head (124) is fixedly connected to the lower end of the rotating connecting member (123), and the brake pad (15) is fixedly connected to the pneumatic head (124).

3. A well claw type joint with a pneumatic brake device according to claim 2, characterized in that: The roller device is provided with two groups; The underground well joint wheel frame (11) is also provided with a three-way valve (111), and the three ports of the three-way valve (111) are all connected to the air pipe (16); The two cylinders (122) are respectively connected to the two ports of the three-way valve (111) through the air pipe (16); The air pipe (16) on the third port of the three-way valve (111) is connected to the air source and is provided with a switch valve (17).

4. A well claw type joint with a pneumatic brake device according to claim 2, characterized in that: The outer circumference of the lower part of the pneumatic shaft body (121) is provided with a double-layer thrust ball bearing (125), and the double-layer thrust ball bearing (125) is arranged below the ground well joint wheel frame (11); The double-layer thrust ball bearing (125) comprises an upper race (125-1), an upper ball layer (125-2), a rotating layer (125-3), a lower ball layer (125-4) and a lower race (125-5) which are sequentially connected in the up-down direction; The lower side surface of the upper race (125-1) and the upper side surface of the rotating layer (125-3) are provided with a first embedding groove into which the upper ball layer (125-2) can be embedded; The lower side surface of the rotating layer (125-3) and the upper side surface of the lower race (125-5) are provided with a second embedding groove into which the lower ball layer (125-4) can be embedded; The universal angle wheel frame (13) is fixedly connected to the rotating layer (125-3).

5. A well claw type joint with a pneumatic brake device according to claim 2, characterized in that: The pneumatic head (124) comprises a threaded rod (124-1) extending downward and two locking nuts (124-2) rotatably connected to the threaded rod (124-1), and the brake pad (15) is connected between the two locking nuts (124-2).

6. A well claw type joint with a pneumatic brake device according to claim 2, characterized in that: The outer periphery of the upper portion of the pneumatic shaft body (121) is threadedly connected with a fixing nut (18); The outer side wall of the pneumatic shaft body (121) is provided with a diameter-changing step structure that cooperates with the ground-well joint wheel frame (11) in a limiting manner; The fixing nut (18) and the diameter-changing step structure cooperate to clamp the pneumatic shaft body (121) on the ground well joint wheel frame (11) to achieve fixation.

7. A well claw type joint with a pneumatic brake device according to claim 2, characterized in that: A regulating valve (126) for adjusting the gas input speed is also provided between the gas cylinder (122) and the gas pipe (16).

8. The underground well claw type joint with pneumatic braking device according to claim 4, characterized in that: A pressure plate (127) is also provided between the double-layer thrust ball bearing (125) and the ground-well joint wheel frame (11), and the pressure plate (127) is penetrated by the pneumatic shaft body (121).

9. A well claw type joint with a pneumatic brake device according to claim 2, characterized in that: A sealing ring for enhancing confidentiality is also provided between the cylinder (122) and the rotating connecting member (123).

10. The underground well claw type joint with pneumatic braking device according to claim 2, characterized in that: A return spring is arranged inside the rotating connecting member (123).

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