Doldman and aircraft refueling system
By introducing a lever and linkage switch design into the Dedman, the problem of accidental circuit closure in the refueling pipeline is solved, preventing operators from accidentally pressing the pressure plate and improving the safety and ease of operation of aircraft refueling.
Patent Information
- Application Number
- CN202512032396.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-27
AI Technical Summary
When using the existing Dydman tablets, operators may accidentally trigger the tablet press, causing the refueling line to become unblocked, posing a safety hazard.
Design a Dedman, which includes a control handle, a pressure plate, a linkage switch, and a lever. The pressing angle of the pressure plate is controlled by the locking and unlocking position of the lever to prevent accidental activation of the pressure plate. The linkage switch is linked with the control valve to ensure the safe connection and disconnection of the refueling line.
It effectively prevents the refueling pipeline from being accidentally connected, improves operational safety, reduces the risk of misoperation, simplifies the operation steps, and improves the ease of operation for operators.
Smart Images
Figure CN121573192A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of aircraft refueling technology, and in particular to a Dedemann refueling system and an aircraft refueling system. Background Technology
[0002] Airports are vital transportation hubs connecting cities to the rest of the world, and aviation refueling stations are responsible for ensuring the fuel supply for flights taking off and landing, thus maintaining the safe and stable operation of airports. Once an aircraft is parked on the tarmac, refueling personnel can refuel the designated aircraft according to the refueling assignment. During the refueling process, the refueling personnel manually control the connection and disconnection of the refueling lines using a handheld DEADMAN.
[0003] In related technologies, the Dedman includes a control handle and a pressure plate hinged to the control handle. The operator holds the control handle and presses the pressure plate to open the refueling line. When the operator releases the pressure on the pressure plate, the pressure plate returns to its original position to disconnect the refueling line. However, when using the Dedman provided by this technology, operators are highly susceptible to accidentally opening the refueling line by accidentally pressing the pressure plate, creating a safety hazard. Summary of the Invention
[0004] In view of this, this application provides a Dydman refueling system and an aircraft refueling system that can prevent operators from accidentally touching the pressure plate when using the Dydman, thereby preventing the refueling pipeline from being accidentally connected and improving operational safety.
[0005] Specifically, this application is implemented through the following technical solution: In a first aspect, embodiments of this application provide a Dedman, including a control handle, a pressure plate, a linkage switch, and a lever. The pressure plate has a connecting end and a pressing end connected to the connecting end. The connecting end is rotatably connected to the control handle, and the pressing end is spaced apart from the control handle, forming a pressing angle between the pressure plate and the control handle. The linkage switch is located between the control handle and the pressure plate. The lever is movably connected between the control handle and the pressing end, and has a locked position for closing the linkage switch and an unlocked position for opening the linkage switch. In the locked position, the lever is fixedly supported between the control handle and the pressure plate, so that the pressing angle is at a first pressing angle. In the unlocked position, the lever is subjected to external force to press the pressure plate toward the control handle, so that the pressing angle is at a second pressing angle, and the second pressing angle is less than the first pressing angle.
[0006] The technical solutions provided by the embodiments of this application have at least the following beneficial effects: The Dedemann refueling system provided in this application can be used with a corresponding refueling truck. The refueling truck has a refueling hose for refueling aircraft and a control valve located on the refueling hose. The control valve controls the opening and closing of the refueling hose. The Dedemann's interlock switch can be linked with the control valve, allowing operators to open and close the control valve by controlling the opening and closing of the interlock switch, thereby controlling the opening and closing of the refueling hose. When the operator is not refueling the aircraft, the lever is in the locked position. At this time, the lever is fixedly supported between the control handle and the pressure plate, preventing the pressure plate from rotating relative to the control handle. This fixes the pressure plate's pressing angle at the first pressing angle, and the pressure plate and interlock switch are spaced apart, keeping the interlock switch closed. Correspondingly, the control valve is also closed to prevent accidental opening of the refueling hose. When the operator needs to refuel the aircraft, the operator needs to move the lever from the locked position to the unlocked position. During this process, the lever, propelled by the operator, presses the pressure plate against the control handle, bringing it to a second pressing angle, which is significantly smaller than the first pressing angle. This brings the pressure plate closer to the interlock switch, activating it. Consequently, the control valve also opens, allowing the operator to supply fuel to the aircraft via the refueling hose.
[0007] Thus, the Daedmann provided in this application can limit the pressure plate's movement via a lever located between the pressure plate and the control handle, giving the Daedmann a function to prevent accidental activation of the pressure plate. With this configuration, the pressure plate can only open the interlock switch when the operator moves the lever to the unlock position, allowing the operator to open the control valve on the refueling line to supply fuel to the aircraft. When the operator does not move the lever, it remains in the locked position to fix the pressure plate, preventing the pressure plate from rotating relative to the control handle and opening the interlock switch. Therefore, the Daedmann provided in this application can prevent operators from accidentally activating the pressure plate while using the Daedmann, thereby preventing the refueling line from being accidentally opened and improving operational safety.
[0008] The technical solution of this application will be further described below: In one embodiment, the pressure plate has a groove located at the pressing end, the groove extending in the direction from the connecting end toward the pressing end. The lever has a hinged end rotatably connected to the control handle and a toggle end connected to the hinged end, the toggle end being slidably disposed within the groove for switching between the locked and unlocked positions.
[0009] In one embodiment, in the locked position, the actuating end is located on the side of the slide closer to the connecting end. In the unlocked position, the actuating end is located on the side of the slide closer to the pressing end.
[0010] In one embodiment, the Dedman also includes an elastic element connected between the lever and the pressure plate, enabling the lever to be reset from the unlocked position to the locked position using the elastic restoring force of the elastic element.
[0011] In one embodiment, the elastic element includes a torsion spring having a spring coil, a first leg connected to the spring coil, and a second leg connected to the spring coil. The lever has a connecting hole and a connecting shaft located within the connecting hole. The pressure plate has connecting flanges spaced apart on both sides along its width direction, and the two ends of the connecting shaft are respectively connected to the two connecting flanges. The spring coil is fitted onto the connecting shaft, the first leg abuts against the lever, and the second leg abuts against the pressure plate.
[0012] In one embodiment, the linkage switch includes a button protruding from the control handle. In the locked position, the pressure plate engages with the button with a clearance. In the unlocked position, the pressure plate presses against the button.
[0013] In one embodiment, the Deadman also provides a limiting protrusion located on the side of the pressure plate facing the control handle, or the limiting protrusion is located on the side of the control handle facing the pressure plate.
[0014] In one embodiment, the control handle also includes a light and a light switch electrically connected to the light.
[0015] In a second aspect, embodiments of this application provide an aircraft refueling system, including a refueling truck and the Deidmann described in any of the above embodiments. The refueling truck is equipped with a signal receiving module and a control valve electrically connected to the signal receiving module. The control valve is used to control the opening or closing of the refueling pipeline. The Deidmann includes a control module and a signal transmitting module located within a control handle. The control module is electrically connected to the signal transmitting module and a linkage switch, respectively. The signal transmitting module is used to establish a communication connection with the corresponding signal receiving module of the refueling truck according to a first input command from the user, so that the linkage switch establishes a communication connection with the control valve. The control module is used to send a control command to the refueling truck according to a second input command from the user, so that the refueling truck controls the working state of the control valve according to the control command. The second input command from the user includes: the user moving the lever to the locked position, so that the control valve is in the closed state; the user moving the lever to the unlocked position, so that the control valve is in the open state.
[0016] The technical solutions provided by the embodiments of this application have at least the following beneficial effects: The aircraft refueling system provided in this application utilizes a Dedman refueling system in conjunction with a refueling truck to refuel aircraft. The Dedman system uses a lever to prevent operators from accidentally pressing the pressure plate while using it, thereby preventing the refueling pipeline on the refueling truck from being accidentally connected, thus improving operational safety.
[0017] The technical solution of this application will be further described below: In one embodiment, the refueling vehicle is further provided with a power supply base, one of the power supply base and the control handle is provided with a socket, and the other of the power supply base and the control handle is provided with a plug. The socket and the plug are connected to each other to make the control handle electrically connected to the power supply base.
[0018] In one embodiment, the power supply base is also provided with an alarm sensor, which is used to issue an alarm when the control handle is not plugged into the power supply base.
[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the Dedman mechanism in the locked position according to an embodiment of this application.
[0023] Figure 2 This is a schematic diagram of the Dedman mechanism in the unlocked position, as shown in one embodiment of this application.
[0024] Figure 3 This is a schematic diagram of the structure of the Deidmann lever in another embodiment of this application, where the lever is in the groove (locked position) of the pressure plate.
[0025] Figure 4 This is a schematic diagram of the structure of the Dedman in another embodiment of this application, where the lever is in the groove of the pressure plate (unlocked position).
[0026] Figure 5 This is a schematic diagram of the connection between the pressure plate and the lever of the Dedemann device, as shown in another embodiment of this application.
[0027] Figure 6 for Figure 5 The diagram shows the connection between the pressure plate and the lever of the Dedman sensor from another perspective.
[0028] Figure 7 This is a schematic diagram of the refueling vehicle in the aircraft refueling system provided in this application.
[0029] Figure 8 A schematic diagram illustrating the principle of wireless communication between the refueling vehicle and the Deidmann wireless communication system in the aircraft refueling system provided in this application.
[0030] Figure 9 This is a schematic diagram of the connection between the Deidmann and the power supply base provided in this application.
[0031] Figure label: 1-Aircraft refueling system; 11-Dedmann; 111-Control handle; 111a-Lighting light; 111b-Lighting switch; 111c-Matching switch; 112-Pressure plate; 1121-Connecting end; 1122-Pressing end; 1123-Slide groove; 1124-First pressing angle; 1125-Second pressing angle; 1126-Connecting flange; 113-Interlocking switch; 114-Lever; 1141-Hinged end; 1142-Toggle Moving end; 1143-First lever angle; 1144-Second lever angle; 1145-Connecting shaft; 115-Elastic element; 1151-Spring ring; 1152-First support leg; 1153-Second support leg; 116-Limiting protrusion; 117-Control module; 118-Communication module; 12-Refueling truck; 12a-Cab; 12b-Refueling trailer; 121-Signal receiving module; 122-Control valve; 123-Power supply base. Detailed Implementation
[0032] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0033] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, height, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indications or positional relationships will also change accordingly.
[0034] Airports are vital transportation hubs connecting cities to the rest of the world, and aviation refueling stations are responsible for ensuring the fuel supply for flights taking off and landing, thus maintaining the safe and stable operation of airports. Once an aircraft is parked on the tarmac, refueling personnel can refuel the designated aircraft according to the refueling assignment. During the refueling process, the refueling personnel manually control the connection and disconnection of the refueling lines using a handheld DEADMAN.
[0035] In related technologies, the Dedman includes a control handle and a pressure plate hinged to the control handle. The operator holds the control handle and presses the pressure plate to open the refueling line. When the operator releases the pressure on the pressure plate, the pressure plate returns to its original position to disconnect the refueling line. However, when using the Dedman provided by this technology, operators are highly susceptible to accidentally opening the refueling line by accidentally pressing the pressure plate, creating a safety hazard.
[0036] Therefore, this application provides a Dedemann refueling system for aircraft that can prevent operators from accidentally pressing the pressure plate when using Dedemann, thereby preventing the refueling pipeline from being accidentally connected and improving operational safety.
[0037] The Deidmann 11 provided in this application will now be described in conjunction with the accompanying drawings.
[0038] See Figure 1 and Figure 2 This application provides a Dedemann 11, including a control handle 111, a pressure plate 112, a linkage switch 113, and a lever 114. The pressure plate 112 has a connecting end 1121 and a pressing end 1122 connected to the connecting end 1121. The connecting end 1121 is rotatably connected to the control handle 111. The pressing end 1122 is spaced apart from the control handle 111, forming a pressing angle between the pressure plate 112 and the control handle 111. The linkage switch 113 is located between the control handle 111 and the pressure plate 112. The lever 114 is movably connected between the control handle 111 and the pressing end 1122. The lever 114 has a locked position for closing the linkage switch 113 and an unlocked position for opening the linkage switch 113. In the locked position, the lever 114 is fixedly supported between the control handle 111 and the pressure plate 112, so that the pressing angle is at a first pressing angle 1124. In the unlocked position, the lever 114 is subjected to external force to press the pressure plate 112 toward the control handle 111, so that the pressing angle is at the second pressing angle 1125, and the second pressing angle 1125 is less than the first pressing angle 1124.
[0039] It should be noted that the Dedman 11 can be used in conjunction with a corresponding refueling truck 12. The refueling truck 12 has a refueling hose for refueling aircraft and a control valve 122 located on the refueling hose. The control valve 122 controls the opening and closing of the refueling hose. The interlocking switch 113 of the Dedman 11 can be linked with the control valve 122. Operators can open and close the control valve 122 by controlling the opening and closing of the interlocking switch 113. For example, operators can press the pressure plate 112, bringing it close to the interlocking switch 113 to activate the circuit within the interlocking switch 113, thus opening the interlocking switch 113. At this time, the control valve 122 is also open, allowing operators to refuel the aircraft through the refueling hose. When the operator releases the pressure plate 112, it returns to its original position, moving away from the interlocking switch 113 to disconnect the circuit within the interlocking switch 113, thus closing the interlocking switch 113. At this time, the control valve 122 is also closed, and the refueling hose stops supplying fuel to the aircraft. Understandably, the linkage switch 113 can be a contact switch or a non-contact switch, that is, the pressure plate 112 can approach the linkage switch 113 to open the linkage switch 113, or the pressure plate 112 can press against the linkage switch 113 to open the linkage switch 113. This application does not limit this.
[0040] To allow operators to press the pressure plate 112 with less effort, the pressure plate 112 is provided with a connecting end 1121 rotatably connected to the control handle 111 and a pressing end 1122 connected to the connecting end 1121, with the pressing end 1122 spaced apart from the control handle 111. This arrangement allows the operator to press the pressing end 1122, causing the pressure plate 112 to rotate relative to the control handle 111 with the connecting end 1121 as the fulcrum, thereby triggering the opening and closing of the linkage switch 113. In this way, the lever arm of the pressure plate 112 is increased, allowing operators to work more efficiently when continuously pressing the pressure plate 112 to refuel the aircraft, saving physical strength and reducing operational difficulty.
[0041] Meanwhile, to prevent operators from accidentally activating the refueling line by accidentally touching the pressure plate 112, this application also includes a lever 114 movably connected between the control handle 111 and the pressure plate 112. The lever 114 can be used to limit the rotation angle of the pressure plate 112 relative to the control handle 111, thereby preventing the pressure plate 112 from accidentally activating the linkage switch 113. Understandably, the lever 114 can slide between the control handle 111 and the pressure plate 112, or the lever 114 can rotate between the control handle 111 and the pressure plate 112; this application does not impose any limitations. When the operator is not refueling the aircraft, the lever 114 is in the locked position. At this time, the lever 114 can be fixedly supported between the control handle 111 and the pressure plate 112, so the pressure plate 112 cannot rotate relative to the control handle 111, and the pressing angle of the pressure plate 112 is fixed at the first pressing angle 1124. The pressure plate 112 and the linkage switch 113 are spaced apart, so that the linkage switch 113 can be kept in the closed state. Correspondingly, the control valve 122 is also in the closed state to prevent the refueling line from being accidentally connected. When the operator needs to refuel the aircraft, the operator needs to move the lever 114 from the locked position to the unlocked position. During this process, the lever 114 is pressed against the control handle 111 by the external force provided by the operator, so that the pressing angle of the pressure plate 112 is at the second pressing angle 1125, and the second pressing angle 1125 is obviously smaller than the first pressing angle 1124, so that the pressure plate 112 is close to the linkage switch 113, so that the linkage switch 113 is in the open state. Correspondingly, control valve 122 is also in the open position, allowing operators to supply fuel to the aircraft through the refueling hose.
[0042] Thus, the Deadman 11 provided in this application can limit the pressure plate 112 by means of a lever 114 movably disposed between the pressure plate 112 and the control handle 111, giving the Deadman 11 a function to prevent accidental activation of the pressure plate 112. With this configuration, the pressure plate 112 can only open the linkage switch 113 when the operator moves the lever 114 to the unlocked position, allowing the operator to open the control valve 122 on the refueling line to supply fuel to the aircraft. When the operator does not move the lever 114, the lever 114 remains in the locked position to fix the pressure plate 112, preventing the pressure plate 112 from rotating relative to the control handle 111 and opening the linkage switch 113. Therefore, the Deadman 11 provided in this application can prevent the operator from accidentally activating the pressure plate 112 while using the Deadman 11, thereby preventing the refueling line from being accidentally opened and improving operational safety.
[0043] In one embodiment, the lever 114 is slidably disposed between the control handle 111 and the pressure plate 112. In this case, the lever 114 is slidably connected to both the control handle 111 and the pressure plate 112. When the lever 114 is in the locked position, it is fixedly supported between the control handle 111 and the pressure plate 112, restricting the rotation of the pressure plate 112 and maintaining the pressing angle of the pressure plate 112 at a first pressing angle 1124, thus keeping the linkage switch 113 in the closed state. When the lever 114 is in the unlocked position, it moves out from between the control handle 111 and the pressure plate 112, thereby releasing the rotation restriction on the pressure plate 112, allowing it to be pressed close to the control handle 111, and thus maintaining the pressing angle of the pressure plate 112 at a second pressing angle 1125, thus opening the linkage switch 113.
[0044] See Figure 1 and Figure 2 In one embodiment, the lever 114 can also be rotatably connected to the control handle 111 and slidably connected to the pressure plate 112. In this case, the lever 114 has a hinged end 1141 rotatably connected to the control handle 111 and a toggle end 1142 connected to the hinged end 1141, with the toggle end 1142 slidably connected to the pressure plate 112. With this configuration, the control handle 111, the pressure plate 112, and the lever 114 can form a linkage mechanism. The locking position of the lever 114 can be set to its dead position, meaning that regardless of the pressure applied to the pressure plate 112 by the operator, the lever 114 will always be supported between the pressure plate 112 and the control handle 111, preventing the pressure plate 112 from generating effective torque and maintaining the pressing angle of the pressure plate 112 at the first pressing angle 1124, thus preventing the pressure plate 112 from opening the linkage switch 113. When the operator moves the lever 114 from the locked position to the unlocked position, the lever 114 is moved away from the dead position by the external force applied by the operator, so that the lever 114 releases the limit on the pressure plate 112, and the pressure plate 112 can rotate relative to the control handle 111 to open the linkage switch 113.
[0045] Understandably, during the process of moving the lever 114 from the locked position to the unlocked position, the lever 114 rotates around the hinge end 1141 as the fulcrum, and the actuating end 1142 of the lever 114 is slidably connected to the pressure plate 112. This allows the sliding end of the lever 114 to pull the pressure plate 112 to rotate as the hinge end 1141 rotates, thereby changing the pressing angle of the pressure plate 112 from the first pressing angle 1124 to the second pressing angle 1125, thus realizing the linkage between the lever 114 and the pressure plate 112. With this configuration, when the operator moves the lever 114 from the locked position to the unlocked position, they can also use the movement of the lever 114 to press the pressure plate 112, causing the pressure plate 112 to rotate relative to the control handle 111 to open the linkage switch 113. In this way, the operator can simultaneously drive the movement of both the lever 114 and the pressure plate 112 with a single operation, simplifying the operation of the Dedemann 11.
[0046] As an example, when the lever 114 is in the dead position, a distance is formed between the lever 114 and the control handle 111. Figure 1 The angle of the first lever 114 shown can be less than or equal to 90 degrees, allowing the lever 114 to be firmly supported between the control handle 111 and the pressure plate 112. When the lever 114 is in the unlocked position, a certain distance is formed between the lever 114 and the control handle 111. Figure 2 The angle of the second lever 114 shown can be greater than 90 degrees, so that the lever 114 can easily tilt and deform between the control handle 111 and the pressure plate 112, so that the pressure plate 112 can be pressed against the control handle 111 to open the linkage switch 113.
[0047] See Figure 3 and Figure 4 In one embodiment, the pressure plate 112 is provided with a groove 1123 located at the pressing end 1122, the groove 1123 extending along the direction from the connecting end 1121 toward the pressing end 1122. The toggle end 1142 is slidably disposed within the groove 1123 to switch between the locked position and the unlocked position.
[0048] Understandably, the groove 1123 can be used to limit the sliding range of the actuating end 1142 of the lever 114 relative to the pressure plate 112, so as to facilitate the lever 114 switching between the locked and unlocked positions. Accordingly, when the lever 114 and the pressure plate 112 are linked together, limiting the sliding range of the lever 114 can also limit the pressing depth of the pressure plate 112, so as to prevent excessive pressing of the pressure plate 112.
[0049] As an example, in the locked position, the actuating end 1142 is located on the side of the slide groove 1123 near the connecting end 1121. At this time, the actuating end 1142 can be positioned relative to the slide groove 1123 as follows: Figure 3As shown in the diagram. In the unlocked position, the toggle end 1142 is located on the side of the slide 1123 near the pressing end 1122. At this time, the toggle end 1142 can be positioned relative to the slide 1123 as follows: Figure 4 The position is shown. With this configuration, when the operator moves lever 114 from the locked position to the unlocked position, lever 114 slides relative to the pressure plate 112 in the direction from the connecting end 1121 to the pressing end 1122. See also... Figure 1 and Figure 2 The further away the pressure plate 112 is from the connection end 1121, the greater the distance between it and the control handle 111. This application pushes the lever 114 in the direction from the connection end 1121 to the pressing end 1122, which can reduce the difficulty for the operator to push the lever 114. In addition, the length limitation of the lever 114 can be used to pull the pressure plate 112 closer to the control handle 111 to realize the linkage between the lever 114 and the pressure plate 112.
[0050] See Figure 5 In one embodiment, the Dedemann 11 further includes an elastic element 115 connected between the lever 114 and the pressure plate 112, so that the lever 114 can be reset from the unlocked position to the locked position by the elastic restoring force of the elastic element 115.
[0051] Understandably, during the process of moving lever 114 from the locked position to the unlocked position, the elastic element 115 is continuously stretched. The operator needs to overcome the elastic restoring force of the elastic element 115 to move lever 114. This design serves two purposes: firstly, when the operator releases lever 114, it allows lever 114 to return to the locked position using the elastic restoring force of the elastic element 115, quickly closing the interlock switch 113 and thus rapidly cutting off the refueling line to prevent fuel leakage. Secondly, the elastic element 115 also prevents lever 114 from being easily moved, thereby preventing accidental activation and locking of lever 114.
[0052] See Figure 6 As an example, the elastic element 115 includes a torsion spring having a spring coil 1151, a first leg 1152 connected to the spring coil 1151, and a second leg 1153 connected to the spring coil 1151. The lever 114 has a connecting hole and a connecting shaft 1145 located within the connecting hole. The pressure plate 112 has connecting flanges 1126 spaced apart on both sides along its width direction. The two ends of the connecting shaft are respectively connected to the two connecting flanges 1126. The spring coil 1151 is sleeved on the connecting shaft 1145, the first leg 1152 abuts against the lever 114, and the second leg 1153 abuts against the pressure plate 112.
[0053] With this configuration, when the lever 114 is in the locked position, the first support 1152 and the second support 1153 are close to each other, which can fix the lever 114 in the locked position and prevent the lever 114 from being accidentally activated. When the operator pushes the lever 114 from the locked position to the unlocked position, the torsion spring, with the spring coil 1151 as the fulcrum, moves the first support 1152 and the second support 1153 away from each other, thereby generating an elastic restoring force.
[0054] See Figure 5 and Figure 6 In one embodiment, to facilitate the opening and closing of the linkage switch 113 by the pressure plate 112, the linkage switch 113 includes a button protruding from the control handle 111. In the locked position, the pressure plate 112 and the button are in clearance engagement. In the unlocked position, the pressure plate 112 presses against the button. With this configuration, the linkage switch 113 is a contact-type button switch; when the pressure plate 112 presses against the button, the linkage switch 113 is opened. When the pressure plate 112 separates from the button, the linkage switch 113 is closed. This configuration results in a simple structure for the linkage switch 113, making it easy to trigger and maintain. Of course, in other embodiments, the linkage switch 113 can also be a proximity switch or a magnetic induction switch, etc., and this application does not impose any limitations.
[0055] See Figure 5 and Figure 6 In one embodiment, to prevent the pressure plate 112 from being over-pressed, the Deadman 11 also provides a limiting protrusion 116. The limiting protrusion 116 is located on the side of the pressure plate 112 facing the control handle 111, or on the side of the control handle 111 facing the pressure plate 112. Understandably, if the limiting protrusion 116 is located on the pressure plate 112, the operator will feel pressing resistance when the limiting protrusion 116 abuts against the control handle 111, indicating that the pressure plate 112 has been pressed into place. If the limiting protrusion 116 is located on the control handle 111, the operator will also feel pressing resistance when the limiting protrusion 116 abuts against the pressure plate 112, indicating that the pressure plate 112 has been pressed into place. This design allows the limiting protrusion 116 to indicate the appropriate pressing degree of the pressure plate 112 to avoid over-pressing and damaging the equipment.
[0056] In addition, when the linkage switch 113 is set as a button, the height of the limit protrusion 116 does not exceed the height of the button, so as to prevent the pressure plate 112 from being unable to effectively press the button.
[0057] See Figure 5 and Figure 6 In one embodiment, the control handle 111 is further provided with a light 111a and a light switch 111b electrically connected to the light 111a.
[0058] Understandably, the lighting lamp 111a can be used to illuminate the working environment in dark or dimly lit conditions, so that operators can inspect the working environment and determine whether there is any oil spill. The lighting switch 111b can be used to control the opening and closing of the lighting lamp 111a, which will not be described in detail in this application.
[0059] See Figure 7 and Figure 8 This application also provides an aircraft refueling system 1, including a refueling vehicle 12 and a Dedemann 11 of any of the above embodiments. The aircraft refueling system 1 provided by this application will be described below.
[0060] The aircraft refueling system 1 includes a refueling truck 12, which is equipped with a signal receiving module 121 and a control valve 122 electrically connected to the signal receiving module 121. The control valve 122 is used to control the opening or closing of the refueling pipeline. The Dedman 11 includes a control module 117 and a signal transmitting module located within a control handle 111. The control module 117 is electrically connected to the signal transmitting module and a linkage switch 113, respectively. The signal transmitting module is used to establish a communication connection with the corresponding signal receiving module 121 of the refueling truck 12 based on a user's first input command, thereby enabling the linkage switch 113 to establish a communication connection with the control valve 122. The control module 117 is used to send control commands to the refueling truck 12 based on a user's second input command, causing the refueling truck 12 to control the operating state of the control valve 122 according to the control command. The user's second input command includes: the user moving the lever 114 to the locked position, closing the control valve 122; or the user moving the lever 114 to the unlocked position, opening the control valve 122.
[0061] Understandably, the Deadman 11 and the refueling truck 12 provided in this application can be wirelessly connected via a signal transmitting module and a signal receiving module 121. Compared to the method in related technologies where the Deadman 11 is connected to the refueling truck 12 via a wire, the Deadman 11 and the refueling truck 12 provided in this application do not require a wire connection. This avoids limiting the range of movement of operators when using the Deadman 11 due to the length of the connecting wire, thus allowing operators to perform refueling operations more flexibly and conveniently.
[0062] Understandably, the Dedemann 11 and the refueling truck 12 can achieve wireless connection through Bluetooth, NFC, or other means, which will not be elaborated upon in this application. The control module 117 and signal transmission module of the Dedemann 11 can be integrated inside the control handle 111 to improve the structural compactness of the Dedemann 11, achieve miniaturization, and facilitate handholding by operators.
[0063] During the pairing process between the refueling truck 12 and the Daidman 11, the operator first turns on both the Daidman 11 and the refueling truck 12. The operator's first input command is the pairing command between the Daidman 11 and the refueling truck 12. At this time, the operator presses the pairing switch 111c on the Daidman 11 (e.g., ...). Figure 6 As shown, the pairing switch 111c is electrically connected to the signal transmitting module, causing the signal transmitting module to send a matching signal to the refueling truck 12. The signal receiving module 121 on the refueling truck 12 receives the matching signal. The operator can confirm the connection on either the refueling truck 12 or the Daedman 11. If the operator confirms the connection between the refueling truck 12 and the Daedman 11, the wireless connection is successful. The operator can then control the control valve 122 of the refueling pipeline to open or close via the linkage switch 113 of the Daedman 11. If the operator does not confirm the connection between the refueling truck 12 and the Daedman 11, the connection fails and needs to be re-paired.
[0064] After the refueling truck 12 and the Dedemann 11 are successfully paired, the operator's second input command can be to send a control command to the refueling truck 12 based on the received refueling command, so that the refueling truck 12 controls the working state of the control valve 122 according to the control command. Specifically, the user's second input command includes: the user moving the lever 114 to the locked position, so that the control valve 122 is in the closed state; and the user moving the lever 114 to the unlocked position, so that the control valve 122 is in the open state.
[0065] Thus, the aircraft refueling system 1 provided in this application can control the refueling and stopping of refueling of the aircraft through the wireless connection between the Dedmann 11 and the refueling truck 12. At the same time, the Dedmann 11 can also prevent the operator from accidentally touching the pressure plate 112 when using the Dedmann 11, thereby preventing the refueling pipeline on the refueling truck 12 from being accidentally connected, thus improving operational safety.
[0066] See Figure 7 and Figure 9 In one embodiment, based on the wireless connection method of Dedemann 11, the refueling vehicle 12 provided in this application is also provided with a power supply base 123. One of the power supply base 123 and the control handle 111 is provided with a socket, and the other of the power supply base 123 and the control handle 111 is provided with a post. The socket and the post are plugged in to make the control handle 111 electrically connected to the power supply base 123.
[0067] Understandably, the refueling truck 12 includes a cab 12a and a refueling trailer 12b. The cab 12a is equipped with a power supply system for supplying power to the refueling truck 12. The refueling trailer 12b is equipped with an upper structure assembly for refueling aircraft. The power supply base 123 can be electrically connected to the power supply system. When the control handle 111 of the Deadman 11 is plugged into the power supply base 123, the connection circuit between the control handle 111 and the power supply base 123 is activated, enabling the power supply base 123 to charge the Deadman 11.
[0068] In one embodiment, the power supply base 123 is also equipped with an alarm sensor, which is used to issue an alarm when the control handle 111 is not plugged into the power supply base 123. Understandably, when the Daedman 11 is not in use, it is normally plugged into the power supply base 123 to prevent it from being missed or lost by the operator. This arrangement, using the alarm sensor on the power supply base 123, can prompt the operator to immediately plug the Daedman 11 back into the power supply base 123 after use, thus preventing it from being missed or lost.
[0069] See you later Figure 7 In one embodiment, the superstructure of the refueling trailer 12b may include a refueling lift for the aircraft refueling operator to sit on, a support frame for supporting the refueling trailer 12b during refueling operations, a refueling pipeline for conveying aviation kerosene, and a reel for winding up the refueling pipeline, etc., which are not limited in this application.
[0070] The technical solutions or features described in the above embodiments can be combined or complemented by each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings. All modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A type of diemann, characterized in that, include: Control handle; A pressure plate has a connecting end and a pressing end connected to the connecting end. The connecting end is rotatably connected to the control handle. The pressing end is spaced apart from the control handle so that a pressing angle is formed between the pressure plate and the control handle. An interlocking switch is located between the control handle and the pressure plate; as well as A lever is movably connected between the control handle and the pressing end, and the lever has a locked position for closing the linkage switch and an unlocked position for opening the linkage switch; In the locked position, the lever is fixedly supported between the control handle and the pressure plate, so that the pressing angle is at the first pressing angle; In the unlocked position, the lever is subjected to external force to press the pressure plate toward the control handle, so that the pressing angle is at the second pressing angle, and the second pressing angle is less than the first pressing angle.
2. The Deidmann according to claim 1, characterized in that, The pressure plate has a groove located at the pressing end, and the groove extends along the connecting end in the direction of the pressing end; the lever has a hinge end that is rotatably connected to the control handle and a toggle end that is connected to the hinge end, and the toggle end is slidably disposed in the groove to switch the locked position and the unlocked position.
3. The Deidmann according to claim 2, characterized in that, In the locked position, the actuating end is located on the side of the slide groove closer to the connecting end; in the unlocked position, the actuating end is located on the side of the slide groove closer to the pressing end.
4. The Deidmann according to claim 1, characterized in that, The Dedman also includes an elastic element connected between the lever and the pressure plate, so that the lever can be reset from the unlocked position to the locked position by the elastic restoring force of the elastic element.
5. The Deidmann according to claim 4, characterized in that, The elastic element includes a torsion spring, which has a spring coil, a first leg connected to the spring coil, and a second leg connected to the spring coil; the lever has a connecting hole and a connecting shaft located in the connecting hole; the pressure plate has connecting flanges on both sides spaced apart along the width direction of the pressure plate, and the two ends of the connecting shaft are respectively connected to the two connecting flanges one by one; the spring coil is sleeved on the connecting shaft, the first leg abuts against the lever, and the second leg abuts against the pressure plate.
6. The Deidmann according to claim 1, characterized in that, The linkage switch includes a button protruding from the control handle; in the locked position, the pressure plate and the button are in clearance fit; in the unlocked position, the pressure plate and the button press against each other.
7. The Dilderman according to any one of claims 1 to 6, characterized in that, The Dedemann also has a limiting protrusion, which is located on the side of the pressure plate facing the control handle, or the limiting protrusion is located on the side of the control handle facing the pressure plate; And / or, the control handle is further provided with a light and a light switch electrically connected to the light.
8. An aircraft refueling system, characterized in that, Including refueling trucks and the Dilderman as described in any one of claims 1 to 7; The refueling vehicle is equipped with a signal receiving module and a control valve electrically connected to the signal receiving module. The control valve is used to control the refueling pipeline to be opened or closed. The Dedemann includes a control module and a signal transmission module located inside the control handle, and the control module is electrically connected to the signal transmission module and the linkage switch respectively. The signal transmitting module is used to establish a communication connection with the signal receiving module of the corresponding refueling truck according to the user's first input command, so that the linkage switch and the control valve can establish a communication connection; the control module is used to send a control command to the refueling truck according to the user's second input command, so that the refueling truck controls the working state of the control valve according to the control command; The user's second input instruction includes: The user moves the lever to the locked position, thus closing the control valve. The user moves the lever to the unlock position, thus opening the control valve.
9. The aircraft refueling system according to claim 8, characterized in that, The refueling vehicle is also equipped with a power supply base. One of the power supply base and the control handle is provided with a socket, and the other of the power supply base and the control handle is provided with a plug. The socket and the plug are connected to each other, so that the control handle is electrically connected to the power supply base.
10. The aircraft refueling system according to claim 9, characterized in that, The power supply base is also equipped with an alarm sensor, which is used to issue an alarm when the control handle is not plugged into the power supply base.