An aircraft de-icing vehicle in-out water linkage switch device and control method

Abstract

The application relates to the technical field of civil aviation ground support equipment, in particular to an airplane deicing vehicle water inlet and outlet linkage switch device and a control method. The device comprises an operation plate, a movable limiting block arranged on the operation plate, and a connecting piece. The connecting piece is arranged at least twice, each connecting piece is rotationally connected with the operation plate, at least one of the connecting pieces is provided with two limiting grooves, the operation plate drives each connecting piece to rotate synchronously in a movement process, the limiting block is clamped into the corresponding limiting groove when the connecting piece rotates to the corresponding angle, the angle of the connecting piece is locked, the limiting block is separated from the limiting groove when the limiting block is pressed, the synchronous switching of the self-suction and working modes of the anti-icing pump is realized, when the device is subjected to vibration or misoperation, the self-suction pipeline ball valve and the working pipeline ball valve are both opened by a part, the anti-icing liquid is caused to flow back, the pump body is caused to idle, even in a severe cold environment, the pipeline is caused to be frozen and blocked, and the deicing operation efficiency and equipment safety are seriously affected.

Description

Technical Field

[0001] This invention relates to the field of civil aviation ground support equipment technology, and in particular to a water inlet / outlet linkage switch device and control method for aircraft de-icing vehicles. Background Technology

[0002] Aircraft de-icing trucks are critical ground support equipment for winter operations at civil aviation airports. They serve aircraft flying within the atmosphere by using anti-icing pumps to deliver anti-icing fluid from storage tanks to the aircraft surface for de-icing. De-icing trucks typically have a self-priming mode and a working mode. The "self-priming mode" described in this article refers to the operating state where the anti-icing pump draws anti-icing fluid from the storage tank; in this state, the self-priming line ball valve is open and the working line ball valve is closed. The "working mode" described in this article refers to the state where the anti-icing pump delivers anti-icing fluid for spraying operations; in this state, the working line ball valve is open and the self-priming line ball valve is closed. Switching between the two modes is achieved through the coordinated switching of the working line ball valve and the self-priming line ball valve.

[0003] In aircraft de-icing operations, the switching between self-priming and operating modes of traditional anti-icing pumps typically relies on manual operation of two ball valves, which is cumbersome and prone to malfunction. For example, when switching to self-priming mode, forgetting to close the working pipeline valve can cause anti-icing fluid backflow, pump dry running, and even pipeline icing and blockage in extremely cold environments, severely impacting de-icing efficiency and equipment safety.

[0004] Therefore, a water inlet / outlet linkage switch device and control method for aircraft de-icing vehicles are proposed. Summary of the Invention

[0005] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0006] To address the shortcomings of existing technologies, one objective of this invention is to provide a water inlet / outlet linkage switch device for aircraft de-icing vehicles.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a water inlet / outlet linkage switch device for an aircraft de-icing vehicle, comprising an operation panel with a movable limiting block and connecting members. At least two connecting members are provided, and multiple connecting members are rotatably connected to the operation panel. At least one of the connecting members has two limiting grooves. During operation, the operation panel drives each connecting member to rotate synchronously. When the connecting member rotates to the corresponding angle, the limiting block engages with the corresponding limiting groove, locking the angle of the connecting member. When the limiting block is pressed, the limiting block disengages from the limiting groove, and the connecting member returns to a rotatable state.

[0008] As a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, two connecting parts are provided, one end of each connecting part is rotatably connected to the operating plate, and the other end of each connecting part is respectively connected to the working pipeline ball valve and the self-priming pipeline ball valve.

[0009] As a preferred embodiment of the aircraft de-icing vehicle water inlet / outlet linkage switch device of the present invention, wherein: the working pipeline ball valve is installed on the first pipeline, the self-priming pipeline ball valve is installed on the second pipeline, and both the first pipeline and the second pipeline are connected to the anti-icing pump.

[0010] In a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, a spring is connected to the operation panel, and one end of the spring is connected to a limit block.

[0011] As a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, the following features are provided: an installation groove is provided on the operating plate; the limiting block and the spring are both located inside the installation groove; one end of the spring is connected to the inner wall of the installation groove, and the other end of the spring is connected to the limiting block; the connecting member includes a connecting plate and a combined cylinder; one end of the connecting plate is connected to a working pipeline ball valve or a self-priming pipeline ball valve; the combined cylinder is installed on the connecting plate at one end of the ball valve connected to it; the combined cylinder consists of a concentric large cylinder and a small cylinder; the large cylinder is located inside the installation groove; one end of the small cylinder extends into the installation groove, and the other end of the small cylinder penetrates the installation groove; the limiting groove is provided on the large cylinder.

[0012] As a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, the operation panel is provided with a sliding groove, the sliding groove is connected to the mounting groove, and one end of the limiting block is located inside the sliding groove.

[0013] As a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, wherein: one end of the operating plate is provided with a drive handle, the drive handle includes a force plate and a sliding plate, one end of the sliding plate is connected to the force plate, and the other end of the sliding plate extends into the mounting groove.

[0014] As a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, the drive handle further includes a folding plate, one end of which is rotatably connected to a force-bearing plate, and the other end of which is rotatably connected to a limiting block.

[0015] As a preferred embodiment of the water inlet / outlet linkage switch device for the aircraft de-icing vehicle described in this invention, the drive handle further includes a pressing plate connected to the end of the sliding plate away from the force plate, and the pressing plate is provided with a first inclined surface and a first flat surface. The limiting block is provided with a second inclined surface and a second plane, and the first inclined surface corresponds to the second inclined surface.

[0016] The beneficial effects of the water inlet / outlet linkage switch device for aircraft de-icing truck of the present invention are as follows: The present invention realizes the linkage control of the ball valve in the working pipeline and the ball valve in the self-priming pipeline through the synchronous rotation structure of the control panel and multiple connecting parts, simplifying the traditional cumbersome step-by-step operation into a one-step switching, significantly improving the efficiency of de-icing operations; at the same time, by utilizing the cooperation of the double limit groove and movable limit block on the connecting parts, the valve is forcibly locked when rotated to the preset fully open or closed position, fundamentally eliminating the safety hazards such as anti-icing fluid backflow, pump dry running, and pipeline icing caused by the double valve half-open; in addition, the push-to-unlock design not only makes the mode switching operation convenient and reliable, but also effectively resists equipment vibration or accidental contact by personnel in the locked state, ensuring that the valve position remains stable. The overall structure is compact, easy to install and modify, and has the comprehensive effects of high efficiency, safety and practicality.

[0017] To address the shortcomings of existing technologies, another objective of this invention is to provide a control method for a water inlet / outlet linkage switch device for aircraft de-icing vehicles.

[0018] To achieve the above objectives, the present invention adopts the following technical solution: a control method for an aircraft de-icing truck water inlet / outlet linkage switch device, which uses the aforementioned aircraft de-icing truck water inlet / outlet linkage switch device and operates according to the following steps: turning off the anti-icing pump to ensure the system is in a non-working state; pressing the limit block to disengage it from its current limit slot, releasing the locking state between the operating plate and the corresponding connecting piece; driving the operating plate to rotate, which in turn drives multiple connecting pieces to rotate synchronously, each connecting piece driving the valve handles of the working pipeline ball valve and the self-priming pipeline ball valve connected to it to rotate, realizing the synchronous switching between the working pipeline and the self-priming pipeline; when the connecting piece rotates to a preset angle, causing the working pipeline ball valve and the self-priming pipeline ball valve to reach the corresponding fully open or fully closed state respectively, releasing the limit block, or under the action of a spring, causing the limit block to automatically engage in another limit slot, locking the angle of the connecting piece, and completing the switching between the anti-icing pump working mode and the self-priming mode.

[0019] The beneficial effects of the control method for the water inlet and outlet linkage switch device of an aircraft de-icing vehicle of the present invention are the same as those of the water inlet and outlet linkage switch device of an aircraft de-icing vehicle, and will not be repeated here. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure shown in the first embodiment of the present invention.

[0022] Figure 2 This is a top view of the working pipeline ball valve being closed and the self-priming pipeline ball valve being open, according to the present invention.

[0023] Figure 3 This is a top view showing the working pipeline ball valve open and the self-priming pipeline ball valve closed according to the present invention.

[0024] Figure 4 This is a schematic diagram of the fourth embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the fifth embodiment of the present invention.

[0026] Figure 6 This is a cross-sectional schematic diagram of the connection between the operation panel and the connector of the present invention.

[0027] In the diagram: 100, operating panel; 101, limiting block; 101a, second inclined plane; 101b, second plane; 102, spring; 103, mounting groove; 104, sliding groove; 105, drive handle; 105a, force plate; 105b, sliding plate; 105c, folding plate; 105d, extrusion plate; 105e, first inclined plane; 105f, first plane; 200, connector; 201, limiting groove; 202, connecting plate; 203, combined cylinder; 300, working pipeline ball valve; 301, first pipeline; 400, self-priming pipeline ball valve; 401, second pipeline; 500, anti-icing pump. Detailed Implementation

[0028] To make the objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1This embodiment provides a water inlet / outlet linkage switch device for an aircraft de-icing vehicle, including an operation panel 100 with a movable limit block 101, and connecting members 200. At least two connecting members 200 are provided, and all connecting members 200 are rotatably connected to the operation panel 100. At least one connecting member 200 has two limit grooves 201, which correspond to the opening and closing of the working pipeline ball valve 300 and the self-priming pipeline ball valve 400, respectively. When the limit block 101 is pressed, the limit block 101 disengages from one of the limit grooves 201, and the connecting member 200 returns to its rotatable state. During the movement of the operation panel 100, it drives each... The connectors 200 rotate synchronously, and each connector 200 drives the valve handle connected to it to rotate, causing the valve to open or close. When the connector 200 rotates to the corresponding angle, it realizes the synchronous switching of the anti-icing pump 500 between self-priming and working modes. After the switching is completed, the limit block 101 is inserted into another limit groove 201 to lock the angle of the connector 200. This prevents the ball valve 400 in the self-priming pipeline and the ball valve 300 in the working pipeline from opening partially due to vibration or misoperation, which could lead to anti-icing fluid backflow, pump body running dry, or even pipeline freezing and blockage in severe cold environments, seriously affecting the efficiency of de-icing operations and equipment safety.

[0033] Example 2

[0034] Reference Figures 1-3 There are two connectors 200. One end of each connector 200 is rotatably connected to the control plate 100, and the other end of each connector 200 is fixedly connected to the handle of the working pipeline ball valve 300 and the self-priming pipeline ball valve 400, respectively. The working pipeline ball valve 300 is installed on the first pipeline 301, and the self-priming pipeline ball valve 400 is installed on the second pipeline 401. Both the first pipeline 301 and the second pipeline 401 are connected to the anti-icing pump 500.

[0035] Assuming the current state is that the working pipeline ball valve 300 is closed and the self-priming pipeline ball valve 400 is open, a switch needs to be made. First, turn off the anti-icing pump 500. Then, push the limit block 101 out of one of the limit grooves 201 to release the lock between the operating plate 100 and the connecting piece 200. From a top-down view, push the operating plate 100 again. The operating plate 100 will cause the two connecting pieces 200 to rotate counterclockwise synchronously, so that the connecting piece 200 connected to the working pipeline ball valve 300... The working pipeline ball valve 300 slowly opens, and the connector 200 connected to the self-priming pipeline ball valve 400 drives the self-priming pipeline ball valve 400 to slowly close. The working pipeline ball valve 300 and the self-priming pipeline ball valve 400 operate synchronously. When the working pipeline ball valve 300 is fully open and the self-priming pipeline ball valve 400 is fully closed, the limit block 101 is engaged in another limit groove 201 to lock the rotation position of the connector 200, keeping the two ball valves in their corresponding switching states. During reverse switching, the working pipeline ball valve 300 switches from the open state to the closed state, and the self-priming pipeline ball valve 400 switches from the closed state to the open state; the linkage principle is the same.

[0036] The two connecting parts 200 are respectively pivoted on the valve shafts of the working pipeline ball valve 300 and the self-priming pipeline ball valve 400, and are rotatably connected to the operating plate 100. The operating plate 100, the two connecting parts 200, and the relatively fixed mounting bases between the two valve shafts together form a planar four-bar linkage mechanism. When the limiting block 101 disengages from the limiting groove 201, the four-bar linkage mechanism can move, causing the operating plate 100 to drive the two connecting parts 200 to rotate synchronously. When the limiting block 101 engages with the limiting groove 201 corresponding to one of the connecting parts 200, the rotation angle of the connecting part 200 is restricted, and the degree of freedom of the four-bar linkage mechanism is constrained, thereby restricting the operating plate 100 and the other connecting part 200 from continuing to rotate, keeping the working pipeline ball valve 300 and the self-priming pipeline ball valve 400 in their corresponding switching positions.

[0037] Example 3

[0038] Reference Figures 1-5 A spring 102 is connected to the operation plate 100. One end of the spring 102 is connected to the limiting block 101. Unlike the above embodiment, in this embodiment, after pressing the limiting block 101 to disengage from the limiting groove 201, when the limiting block 101 disengages from one of the limiting grooves 201, even if the spring 102 drives the limiting block 101 to reset after rotating the operation plate 100, the limiting block 101 will still rotate and rub against the surface of the large cylinder. Only when the limiting block 101 corresponds to the other limiting groove 201 will it automatically enter the other limiting groove 201. This operation will only lead to increased wear.

[0039] Furthermore, the operating panel 100 has an installation groove 103. The limiting block 101 and the spring 102 are both located inside the installation groove 103. One end of the spring 102 is connected to the inner wall of the installation groove 103, and the other end of the spring 102 is connected to the limiting block 101. The connecting member 200 includes a connecting plate 202 and a combined cylinder 203. One end of the connecting plate 202 is connected to the working pipeline ball valve 300 or the self-priming pipeline ball valve 400. The combined cylinder 203 is installed on the connecting plate 202 and the ball valve connected to it. The combined cylinder 203 consists of a concentric large cylinder and a small cylinder. The large cylinder is located inside the installation groove 103, and one end of the small cylinder extends into the installation groove 103, while the other end of the small cylinder penetrates the installation groove 103. The limiting groove 201 is opened on the large cylinder.

[0040] Furthermore, the operation panel 100 is provided with a slide groove 104, which is connected to the mounting groove 103, and one end of the limiting block 101 is located inside the slide groove 104.

[0041] In this embodiment, the slide 104 is a through groove, that is, the mounting groove 103 can be connected to the outside through the slide 104, and the limiting block 101 passes through the slide 104.

[0042] When in use, by moving the limiting block 101, the limiting block 101 is disengaged from one of the limiting slots 201. At the same time, the operating plate 100 is rotated. When it is rotated to the appropriate position, the hand is released. Under the elastic force of the spring 102, the limiting block 101 is inserted into the other limiting slot 201, thus completing the switching of the anti-icing pump 500.

[0043] The design of the slide groove 104 not only ensures that the limit block 101 can only move in a straight line, thus ensuring that the spring 102 will only be compressed in a straight line, increasing the service life of the spring 102, but also ensures that in the event of misoperation, the connecting plate 202 rotates, and the combined cylinder 203 rotates the limit block 101. The limit block 101 cannot rotate due to the restriction of the slide groove 104, which in turn prevents the combined cylinder 203 and the connecting plate 202 connected to the combined cylinder 203 from rotating, ensuring that the position of the valve will not be offset, that is, preventing multiple ball valves from being partially opened.

[0044] Example 4

[0045] Reference Figures 1-4The operating plate 100 has a drive handle 105 at one end. The drive handle 105 includes a force plate 105a and a sliding plate 105b. One end of the sliding plate 105b is connected to the force plate 105a, and the other end of the sliding plate 105b extends into the mounting groove 103. The drive handle 105 also includes a folding plate 105c. One end of the folding plate 105c is rotatably connected to the force plate 105a, and the other end of the folding plate 105c is rotatably connected to the limiting block 101.

[0046] In this embodiment, the mounting groove 103 is cylindrical at the corresponding small cylinder and matches the small cylinder, ensuring the sealing between the connecting plate 202 and the operating plate 100 while they can rotate, preventing cold air from entering the mounting groove 103 and affecting the device. The sliding plate 105b is arranged in the same way as the small cylinder, and the groove opening of the mounting groove 103 is also provided with a corresponding cylindrical groove to ensure the sealing between them. At the same time, the sliding groove 104 is not connected to the outside, so cold air from the outside will not enter the mounting groove 103 through the sliding groove 104.

[0047] Unlike the above embodiment, in this embodiment, cold air from the outside will not enter the installation groove 103. By pressing the force plate 105a, the force plate 105a drives the sliding plate 105b to move, and the sliding plate 105b drives the limiting block 101 to move, so that the limiting block 101 disengages from the limiting groove 201 and squeezes the spring 102, causing the spring 102 to contract. When the adjustment is in place, the force plate 105a is released, and under the elastic force of the spring 102, the limiting block 101 will insert into the other limiting groove 201. Otherwise, the limiting block 101 will not be inserted into the limiting groove 201. By observing the position of the force plate 105a, it can be determined whether the two ball valves are fully open or closed.

[0048] Example 5

[0049] Reference Figures 1-6 One end of the operating plate 100 is provided with a drive handle 105. The drive handle 105 includes a force plate 105a and a sliding plate 105b. One end of the sliding plate 105b is connected to the force plate 105a, and the other end of the sliding plate 105b extends into the mounting groove 103. The drive handle 105 also includes a pressing plate 105d connected to the end of the sliding plate 105b away from the force plate 105a. The pressing plate 105d is provided with a first inclined surface 105e and a first flat surface 105f. The limiting block 101 is provided with a second inclined surface 101a and a second flat surface 101b. The first inclined surface 105e corresponds to the second inclined surface 101a.

[0050] In this embodiment, the mounting groove 103 is cylindrical at the corresponding small cylinder and matches the small cylinder, ensuring the sealing between the connecting plate 202 and the operating plate 100 while they can rotate, preventing cold air from entering the mounting groove 103 and affecting the device. The sliding plate 105b is arranged in the same way as the small cylinder, and the groove opening of the mounting groove 103 is also provided with a corresponding cylindrical groove to ensure the sealing between them. At the same time, the sliding groove 104 is not connected to the outside, so cold air from the outside will not enter the mounting groove 103 through the sliding groove 104.

[0051] Unlike the above embodiments, in this embodiment, the folding plate 105c is removed and the extrusion plate 105d is used instead. The two ends of the folding plate 105c are connected to the sliding plate 105b and the limiting block 101, respectively, which is more complicated to process. The extrusion plate 105d is used instead and the bevel is cut, which makes the production process simple and quick.

[0052] Unlike the previous embodiment, in this embodiment, pushing the force plate 105a causes the force plate 105a to move via the sliding plate 105b, which in turn moves the pressing plate 105d. The pressing plate 105d presses the second inclined surface 101a on the limiting block 101 via its first inclined surface 105e, causing the limiting block 101 to disengage from the limiting groove 201. When the first plane 105f on the pressing plate 105d contacts the second plane 101b on the limiting block 101, the limiting block 101 cannot reset. That is, when the operating plate 100 is pulled... When adjusting the two ball valves, it is not necessary to press the control limit block 101 continuously, making the operation simpler. After the adjustment is completed, pull the force plate 105a back so that the first plane 105f on the extrusion plate 105d is misaligned with the second plane 101b on the limit block 101. Even if the first inclined surface 105e on the extrusion plate 105d corresponds to the second inclined surface 101a on the limit block 101, when the limit block 101 is reset, it will also drive the extrusion plate 105d to reset through the second inclined surface 101a, thereby causing the force plate 105a to reset.

[0053] In the locked state, the limit block 101 is always pressed against the limit groove 201 by the spring 102. Unless an external force is applied to press the limit block 101, it cannot be unlocked, which effectively avoids mode switching caused by equipment vibration, accidental contact by personnel, and other unexpected situations, and significantly improves the safety of de-icing operations.

[0054] Example 6

[0055] This embodiment provides a control method for an aircraft de-icing vehicle's water inlet / outlet linkage switch device, including the following steps: Turn off the anti-icing pump 500 to ensure the system is in a non-operating state.

[0056] Pressing the limit block 101 overcomes the force of the spring 102, causing the limit block 101 to move in a straight line and disengage from the current limit groove 201, thus releasing the locking state between the operation plate 100 and the corresponding connecting piece 200.

[0057] The control panel 100 is driven to rotate, which in turn drives multiple connectors 200 to rotate synchronously. Each connector 200 drives the valve handles of the working pipeline ball valve 300 and the self-priming pipeline ball valve 400 connected to it to rotate, thereby realizing the synchronous switching between the working pipeline and the self-priming pipeline.

[0058] When the connector 200 is rotated to a preset angle, so that the working pipeline ball valve 300 and the self-priming pipeline ball valve 400 reach the corresponding state of being fully open or fully closed, the limit block 101 is released. Under the action of the spring 102, the limit block 101 automatically moves into another limit groove 201 along the linear movement direction, locking the angle of the connector 200 and completing the switching between the working mode and the self-priming mode of the anti-icing pump 500.

[0059] When the limit block 101 is engaged in the limit slot 201, it generates perceptible operational feedback to prompt the operator to switch to the correct position.

[0060] Through a three-step operation of pressing to unlock, synchronous linkage, and self-locking upon reaching the target position, the ball valve 300 in the working pipeline and the ball valve 400 in the self-priming pipeline are switched synchronously, simplifying the operation process and improving the efficiency of de-icing operations. The corresponding design of the preset angle and the limit groove 201 forces both valves to be fully open or fully closed simultaneously to complete the locking, eliminating the safety hazard of half-open double valves. After the switching is completed, the limit block 101 automatically engages with the limit groove 201 under the action of the spring 102, locking the angle of the connector 200 and effectively preventing valve position displacement caused by vibration or accidental contact. At the same time, the tactile feedback clearly indicates that the switch is in place, lowering the operation threshold and providing a safe, reliable, and efficient control guarantee for de-icing operations.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water inlet / outlet linkage switch device for an aircraft de-icing vehicle, characterized in that: include, The operation panel (100) is provided with a movable limit block (101). Connector (200), at least two connectors (200) are provided, and multiple connectors (200) are rotatably connected to the operation plate (100), and at least one of the connectors (200) has two limiting grooves (201). During the operation, the operating plate (100) drives each connecting piece (200) to rotate synchronously. When the connecting piece (200) rotates to the corresponding angle, the limiting block (101) is engaged in the corresponding limiting groove (201) to lock the angle of the connecting piece (200). When the limiting block (101) is pressed, the limiting block (101) disengages from the limiting groove (201), and the connecting piece (200) returns to a rotatable state.

2. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 1, characterized in that: Two connectors (200) are provided. One end of each connector (200) is rotatably connected to the operating plate (100), and the other end of each connector (200) is connected to the working pipeline ball valve (300) and the self-priming pipeline ball valve (400) respectively.

3. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 2, characterized in that: The working pipeline ball valve (300) is installed on the first pipeline (301), and the self-priming pipeline ball valve (400) is installed on the second pipeline (401). Both the first pipeline (301) and the second pipeline (401) are connected to the anti-icing pump (500).

4. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in any one of claims 1 to 3, characterized in that: A spring (102) is connected to the operation panel (100), and one end of the spring (102) is connected to the limiting block (101).

5. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 4, characterized in that: The operation panel (100) is provided with an installation groove (103). The limiting block (101) and the spring (102) are both located inside the installation groove (103). One end of the spring (102) is connected to the inner wall of the installation groove (103), and the other end of the spring (102) is connected to the limiting block (101). The connector (200) includes a connecting plate (202) and a combined cylinder (203). One end of the connecting plate (202) is connected to a working pipeline ball valve (300) or a self-priming pipeline ball valve (400). The combined cylinder (203) is installed on one end of the ball valve connected to the connecting plate (202). The combined cylinder (203) consists of a concentric large cylinder and a small cylinder. The large cylinder is located inside the mounting groove (103), and one end of the small cylinder extends into the mounting groove (103), while the other end of the small cylinder penetrates through the mounting groove (103). The limiting groove (201) is formed on the large cylinder.

6. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 5, characterized in that: The operation panel (100) is provided with a sliding groove (104), which is connected to the mounting groove (103), and one end of the limiting block (101) is located inside the sliding groove (104).

7. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 6, characterized in that: One end of the operation plate (100) is provided with a drive handle (105), the drive handle (105) includes a force plate (105a) and a sliding plate (105b), one end of the sliding plate (105b) is connected to the force plate (105a), and the other end of the sliding plate (105b) extends into the mounting groove (103).

8. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 7, characterized in that: The drive handle (105) also includes a folding plate (105c), one end of which is rotatably connected to the force plate (105a), and the other end of which is rotatably connected to the limiting block (101).

9. The aircraft de-icing vehicle water inlet / outlet linkage switch device as described in claim 7, characterized in that: The drive handle (105) also includes a pressing plate (105d) connected to the end of the sliding plate (105b) away from the force plate (105a), and the pressing plate (105d) is provided with a first inclined surface (105e) and a first flat surface (105f). The limiting block (101) is provided with a second inclined surface (101a) and a second plane (101b), and the first inclined surface (105e) corresponds to the second inclined surface (101a).

10. A control method for an aircraft de-icing truck water inlet / outlet interlocking switch device, comprising the aircraft de-icing truck water inlet / outlet interlocking switch device as described in any one of claims 1 to 9, characterized in that: Includes the following steps: Turn off the anti-icing pump (500) and ensure the system is in a non-operating state; Press the limit block (101) to disengage it from the current limit groove (201) and release the locking state between the operation plate (100) and the corresponding connector (200); The drive control plate (100) moves, and the control plate (100) drives multiple connectors (200) to rotate synchronously. Each connector (200) drives the valve handles of the working pipeline ball valve (300) and the self-priming pipeline ball valve (400) connected to it to rotate, so as to realize the synchronous switching between the working pipeline and the self-priming pipeline. When the connector (200) is rotated to the preset angle, so that the working pipeline ball valve (300) and the self-priming pipeline ball valve (400) reach the corresponding state of being fully open or fully closed, the limit block (101) is released, or the limit block (101) is automatically locked into another limit groove (201) under the action of the spring (102), and the angle of the connector (200) is locked, thus completing the switching between the working mode and the self-priming mode of the anti-icing pump (500).

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