Separable and combinable airplane wheel jack
By designing a detachable and combinable wheel jack, and utilizing structures such as pins, limit pins, and high-pressure quick couplings, the problems of inconvenient operation and safety hazards of wheel jacks in narrow spaces have been solved, enabling safe, convenient operation and remote use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-03
AI Technical Summary
Conventional wheel jacks are integral structures, which are inconvenient to use in narrow operating spaces and pose safety hazards.
Design a detachable and combinable wheel jack. The jack can be separated and combined by setting up a pin, limit pin, torsion spring and slot. Combined with a high-pressure quick connector and a multi-layer ultra-high strength steel wire wound hose, it is convenient to operate in different spaces.
It enables safe operation in confined spaces, avoids safety hazards, enhances operational convenience and safety, and supports remote operation.
Smart Images
Figure CN224076989U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of jack technology, specifically a detachable and combinable wheel jack. Background Technology
[0002] An aircraft wheel axle jack consists of multiple jack sections, a frame, a high-pressure pump, a low-pressure pump, an oil tank, and other components. Its main purpose is to lift the aircraft wheel axle during maintenance, thereby facilitating the inspection and replacement of components such as the wheels.
[0003] Conventional aircraft wheel jacks are usually a single-piece structure. In some special working conditions, the operating space is narrow, and personnel need to squat under the aircraft wheel axle to operate them. This is inconvenient to use, and at the same time, it is easy to cause safety hazards if it falls, resulting in low safety. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide a separable and combinable wheel jack to solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a separable and combinable wheel jack, comprising an oil tank, a valve assembly, a base, and a jack body. Two first docking plates are fixed to the lower side of one side of the oil tank, and two second docking plates are fixed to the top side of the base. A pin connects the first docking plates and the second docking plates. A push rod passes through the outer surface of the pin, and a spring is sleeved on the outside of the push rod. A magnetic ring is sleeved on the outside of the pin. A slot is provided at the top of the pin. A bracket is fixed to the upper back of the second docking plates, and a limit pin and a torsion spring are connected inside the bracket. An oil pipe connects the valve assembly and the jack body through an oil line connector.
[0006] By adopting the above technical solution, when the machine wheel jack needs to be used separately, the operator presses the push rod to displace it. After the push rod displaces, it compresses the spring, and the push rod presses against the limit pin, causing the limit pin to rotate upwards, ending the limit on the pin. At this time, the operator can pull the pin outwards through the protrusion on the outer ring of the pin to complete the disassembly work, thereby limiting the first and second docking plates. After pulling out the pin, it is no longer necessary to press the push rod. Then, the operator first disconnects the oil pipe through the oil line connector, and then connects the oil lines of the valve group and the jack body to the oil lines through other oil line connectors of other lengths. This allows the operator to operate the hand pump and valve group in a more spacious place. When combined use is required, the operator first disconnects the oil pipe through the oil line connector, and then the operator... The operator merges the oil tank with the base, aligning the first and second docking plates. Then, the operator inserts a pin, which pushes upwards to open the limiting pin. Once the pin is fully inserted, it limits the connection between the first and second docking plates. A torsion spring, combined with gravity, causes the limiting pin to rotate downwards into a slot, thus preventing the pin from falling off. A magnetic ring ensures the larger diameter end of the pin is pressed tightly against the first docking plate, increasing structural stability. Both the pin and the limiting pin are made of maraging steel such as Ni or titanium alloys such as Ti-Al-V, possessing ultra-high strength and good toughness. They have sufficient strength to support the connection area between the first and second docking plates and prevent breakage of the pin or limiting pin due to vibration or stress during movement. Finally, the original oil lines and pipes are reinstalled via the oil line connector.
[0007] Furthermore, the first docking plate is in contact with the second docking plate, and the pin is detachably connected to the first docking plate and the second docking plate.
[0008] By adopting the above technical solution, when combined use is required, the staff first disconnects the oil line pipe through the oil line connector, and then the staff merges the oil tank and the base so that the first docking plate and the second docking plate fit together.
[0009] Furthermore, the pin and the limiting pin abut against each other, and the limiting pin is rotatably connected to the bracket.
[0010] By adopting the above technical solution, the worker inserts the pin, and when the pin is inserted, it pushes the limiting pin upward. After the pin is inserted, it limits the first docking plate and the second docking plate. The limiting pin is rotated downward into the slot by the torsion spring and gravity, thereby limiting the pin and preventing it from falling off.
[0011] Furthermore, the push rod is slidably connected to the pin, and the push rod abuts against the limiting pin.
[0012] By adopting the above technical solution, the worker presses the top rod to displace it. After the top rod displaces, it compresses the spring, and the top rod presses against the limit pin, causing the limit pin to rotate upward and end the limiting of the pin.
[0013] Furthermore, the top rod has an "L" shaped cross-section.
[0014] By adopting the above technical solution, the shape of the push rod allows the limit pin to be parallel to the latch when the push rod pushes open the limit pin, thereby ending the limitation on the latch.
[0015] Furthermore, both the pin and the limiting pin are made of maraging steel or titanium alloy.
[0016] By adopting the above technical solution, both the pin and the limiting pin are made of martensitic aging steel such as Ni or titanium alloy such as Ti-Al-V, which have ultra-high strength and good toughness. They have sufficient strength to support the connection area of the first and second mating plates and avoid the pin or limiting pin from breaking due to vibration, stress and other effects during movement.
[0017] Furthermore, the valve assembly is installed on the top of the oil tank, and a hand pump is installed on the top of the valve assembly. A tow bar is fixed on one side of the oil tank.
[0018] By adopting the above technical solution, the operator can move the jack by inserting a handle into the tow bar and using rollers. After moving the jack body to below the aircraft wheel axle, the operator can insert a rocker arm into the hand pump and continuously swing the rocker arm to make the hand pump, in conjunction with the valve group, oil line, oil pipe and oil line connector, supply oil to the jack body.
[0019] Furthermore, the base is located on the other side of the oil tank, and the jack body is installed on the top of the base, with rollers connected to one side of the base.
[0020] By adopting the above technical solution, staff can move the wheel jack by inserting a handle into the tow bar and using rollers. After the main body of the jack is raised, the aircraft's wheel axle can be lifted for easy maintenance.
[0021] Furthermore, the oil circuit connector is a Parker Snap-Tite series high-pressure quick connector, and the oil circuit pipe is a multi-layer ultra-high strength steel wire wound hose or an AISI seamless steel pipe.
[0022] By adopting the above technical solution, since the oil circuit connector is a Parker Snap-Tite series high-pressure quick connector, it is easy to quickly separate the connector to replace the oil circuit pipe. Afterwards, the staff can use other oil circuit connectors to connect the oil circuit of the valve group and the main body of the jack to the oil circuit of the valve group and the main body of the jack through the oil circuit pipe made of multi-layer ultra-high strength steel wire wound hose or other lengths of AISI seamless steel pipe. The multi-layer ultra-high strength steel wire wound hose or AISI seamless steel pipe has good high pressure resistance, which avoids the inner wall of the oil circuit pipe from bursting due to pressure.
[0023] In summary, the present invention has the following main advantages:
[0024] 1. This utility model, through the design of a pin, a limiting pin, a torsion spring, and a slot, allows for separate use. When separation is required, rotating the limiting pin upwards releases the pin's position, and then pulling out the pin releases the position of the first and second docking plates. This allows the oil tank and base to be used separately, avoiding the large size of the jack occupying too much operating space. When combined use is required, simply merge the oil tank and base, ensuring the first and second docking plates are in contact. Then insert the pin, which pushes the limiting pin upwards during insertion. Once the pin is fully inserted, it limits the position of the first and second docking plates. The torsion spring, combined with gravity, causes the limiting pin to rotate downwards into the slot, thus limiting the pin and preventing it from falling out. When combined, it is suitable for conventional operating spaces; when separated, it is suitable for narrow spaces, ensuring operator convenience and safety.
[0025] 2. With the addition of a push rod and a spring, when the pin needs to be separated for use, simply press the push rod to displace it. After the push rod displaces, it compresses the spring, and the push rod presses against the limiting pin, causing the limiting pin to rotate upward and stop limiting the pin. At this time, the pin can be pulled out through the protrusion on the outer ring of the pin to complete the disassembly. This makes it easy to disassemble the pin.
[0026] 3. This utility model, through the setting of oil circuit pipes and oil circuit connectors, allows the oil tank to be separated from the base, so that the main body of the jack is far away from the valve group and the hand pump. Different lengths of oil circuit pipes can be replaced through the oil circuit connectors, so that the staff can operate the hand pump and valve group in a more spacious place; remote operation is also possible, which is simple and convenient. Attached Figure Description
[0027] Figure 1 This is a side view of the present invention.
[0028] Figure 2 This is a schematic diagram of the structure of this utility model;
[0029] Figure 3 This is a top view of the structure of this utility model;
[0030] Figure 4 This is a schematic diagram of the pin structure of this utility model;
[0031] Figure 5 This is a side sectional view of the pin structure of this utility model.
[0032] In the diagram: 1. Oil tank; 2. Valve assembly; 3. Hand pump; 4. Bounding rod; 5. Base; 6. Roller; 7. Jack body; 8. Oil circuit pipe; 9. Oil circuit connector; 10. First docking plate; 11. Second docking plate; 12. Pin; 13. Push rod; 14. Bracket; 15. Limit pin; 16. Slot; 17. Torsion spring; 18. Spring; 19. Magnetic ring. Detailed Implementation
[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0034] The embodiments of this utility model will be described below based on its overall structure.
[0035] Example 1:
[0036] A detachable and combinable wheel jack, such as Figures 1-5As shown, the device includes an oil tank 1, a valve assembly 2, a base 5, and a jack body 7. Its features include: two first docking plates 10 fixed to the lower side of one side of the oil tank 1; two second docking plates 11 fixed to the top side of one side of the base 5; the first docking plates 10 and second docking plates 11 are in contact; a pin 12 connects the first docking plates 10 and second docking plates 11; the pin 12 is detachably connected to the first docking plates 10 and second docking plates 11; a push rod 13 penetrates the outer surface of the pin 12; the push rod 13 has an "L"-shaped cross-section; the push rod 13 is slidably connected to the pin 12; the push rod 13 abuts against a limiting pin 15; a spring 18 is sleeved on the outside of the push rod 13; a magnetic ring 19 is sleeved on the outside of the pin 12; a slot 16 is opened at the top of the pin 12; and the second docking plates 11... A bracket 14 is fixed on the upper back. Inside the bracket 14 are a limit pin 15 and a torsion spring 17. A pin 12 abuts against the limit pin 15, and the limit pin 15 is rotatably connected to the bracket 14. Both the pin 12 and the limit pin 15 are made of maraging steel or titanium alloy. An oil pipe 8 connects the valve assembly 2 and the jack body 7 via an oil pipe connector 9. When the machine wheel jack needs to be disassembled, the operator presses the push rod 13 to displace it. After the push rod 13 displaces, it compresses the spring 18, and the push rod 13 abuts against the limit pin 15, causing the limit pin 15 to rotate upwards, ending the restriction on the pin 12. At this point, the operator can pull out the pin 12 through the protrusion on its outer ring to complete the disassembly work, thereby connecting the first mating plate. 10 and the second docking plate 11 are limited. After the pin 12 is pulled out, it is no longer necessary to press the top rod 13. Then, the operator first disconnects the oil pipe 8 through the oil pipe connector 9. Then, the operator connects the oil pipes 8 of other lengths to the oil pipes of the valve group 2 and the jack body 7 through other oil pipe connectors 9, so that the operator can operate the hand pump 3 and the valve group 2 in a more spacious place. When combined use is required, the operator first disconnects the oil pipe 8 through the oil pipe connector 9. Then, the operator merges the oil tank 1 and the base 5 so that the first docking plate 10 and the second docking plate 11 are attached. Then, the operator inserts the pin 12. When the pin 12 is inserted, it pushes the limiting pin 15 upward. After the pin 12 is fully inserted, the first docking plate 10 is connected to the jack body 7. The connecting plate 10 and the second connecting plate 11 are positioned. The limiting pin 15 is rotated downwards into the slot 16 by the torsion spring 17 and gravity, thereby limiting the pin 12 and preventing it from falling off. The magnetic ring 19 makes the larger diameter end of the pin 12 fit tightly against the first connecting plate 10, increasing structural stability. Both the pin 12 and the limiting pin 15 are made of martensitic aging steel such as 18Ni300 or titanium alloy such as Ti-6Al-4V, which have ultra-high strength and good toughness. They have sufficient strength to support the connection area of the first connecting plate 10 and the second connecting plate 11 and prevent the pin 12 or the limiting pin 15 from breaking due to vibration, stress and other effects during movement. Finally, the original oil pipe 8 is reinstalled through the oil pipe connector 9.
[0037] See Figures 1-3 In the above embodiment, valve assembly 2 is installed on the top of fuel tank 1, and a hand pump 3 is installed on the top of valve assembly 2. A tow bar 4 is fixed on one side of fuel tank 1, and base 5 is located on the other side of fuel tank 1. Jack body 7 is installed on the top of base 5, and a roller 6 is connected to one side of base 5. The operator can move the wheel jack by inserting a handle into the tow bar 4 and cooperating with the roller 6. After moving the jack body 7 to below the aircraft wheel axle, the operator can insert a rocker arm into the hand pump 3 and continuously swing the rocker arm to make the hand pump 3 cooperate with valve assembly 2, oil line oil pipe 8 and oil line connector 9 to supply oil to the jack body 7, so that the jack body 7 can be raised or lowered.
[0038] Example 2:
[0039] Based on the above embodiment one, in order to facilitate quick replacement of oil pipes with different spacings after separation, the following settings are made.
[0040] See Figures 1-3 In the above embodiment, the oil line connector 9 is a Parker Snap-Tite 71 series high-pressure quick connector, which facilitates quick and easy replacement of the oil line pipe 8. The operation is simple, convenient and stable. The oil line pipe 8 is a multi-layer ultra-high strength steel wire wound hose or AISI316 seamless steel pipe, which has good high pressure resistance and avoids the inner wall of the oil line pipe 8 from bursting due to pressure.
[0041] The implementation principle of this utility model is as follows: First, the operator can move the jack by inserting a handle into the tow bar 4 and cooperating with the roller 6. After moving the jack body 7 to below the aircraft wheel axle, the operator can insert a rocker arm into the hand pump 3 and continuously swing the rocker arm to make the hand pump 3 cooperate with the valve group 2, oil line oil pipe 8 and oil line connector 9 to supply oil to the jack body 7, so that the jack body 7 can be raised or lowered.
[0042] When the machine wheel jack needs to be disassembled, the operator presses the push rod 13 to displace it. After the push rod 13 displaces, it compresses the spring 18, and the push rod 13 presses against the limit pin 15, causing the limit pin 15 to rotate upwards and stop limiting the pin 12. At this time, the operator can pull out the pin 12 through the protrusion on the outer ring of the pin 12 to complete the disassembly work, thereby limiting the first docking plate 10 and the second docking plate 11. After pulling out the pin 12, it is no longer necessary to press the push rod 13. Then, the operator first disconnects the oil pipe 8 made of AISI316 seamless steel pipe through the oil pipe connector 9. Since the oil pipe connector 9 is a Parker... Snap-Tite's 71 series high-pressure quick couplings facilitate quick disconnection of the couplings to replace the oil line 8. Afterwards, the operator can connect the oil line 8, which is made of multi-layer ultra-high strength steel wire wound hose or other lengths of AISI316 seamless steel pipe, to the oil line of valve group 2 and jack body 7 through other oil line couplings 9. This allows the operator to operate the hand pump 3 and valve group 2 in a more spacious area.
[0043] When combined for use, the operator first disconnects the oil line pipe 8 via the oil line connector 9. Then, the operator merges the oil tank 1 with the base 5, ensuring the first mating plate 10 and the second mating plate 11 are in contact. Next, the operator inserts the pin 12. When the pin 12 is inserted, it pushes upwards to open the limiting pin 15. Once the pin 12 is fully inserted, it limits the first mating plate 10 and the second mating plate 11. The torsion spring 17, combined with gravity, causes the limiting pin 15 to rotate downwards into the slot 16, thus limiting the pin 12 and preventing it from falling out. Furthermore, the magnetic ring 1... 9. The larger diameter end of the pin 12 is pressed tightly against the first mating plate 10 to increase structural stability. Both the pin 12 and the limiting pin 15 are made of martensitic aging steel such as 18Ni300 or titanium alloy such as Ti-6Al-4V, which have ultra-high strength and good toughness. They have sufficient strength to support the connection area of the first mating plate 10 and the second mating plate 11, and avoid the pin 12 or the limiting pin 15 from breaking due to vibration, stress and other effects during movement. Finally, the original oil pipe 8 is reinstalled through the oil pipe connector 9.
[0044] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A detachable and combinable wheel jack, comprising an oil tank (1), a valve assembly (2), a base (5), and a jack body (7), characterized in that: Two first docking plates (10) are fixed on one side of the oil tank (1), and two second docking plates (11) are fixed on one side of the top of the base (5). A pin (12) is connected between the first docking plate (10) and the second docking plate (11). A push rod (13) passes through the outer surface of the pin (12), and a spring (18) is sleeved on the outside of the push rod (13). A magnetic ring (19) is sleeved on the outside of the pin (12). A slot (16) is opened on the top of the pin (12). A bracket (14) is fixed on the upper back of the second docking plate (11), and a limit pin (15) and a torsion spring (17) are connected inside the bracket (14). An oil pipe (8) is connected between the valve group (2) and the jack body (7) through an oil pipe joint (9).
2. The detachable and combinable wheel jack according to claim 1, characterized in that: The first docking plate (10) is in contact with the second docking plate (11), and the pin (12) is detached from the first docking plate (10) and the second docking plate (11).
3. The detachable and combinable wheel jack according to claim 2, characterized in that: The pin (12) abuts against the limiting pin (15), and the limiting pin (15) is rotatably connected to the bracket (14).
4. The detachable and combinable wheel jack according to claim 3, characterized in that: The top rod (13) is slidably connected to the pin (12), and the top rod (13) abuts against the limiting pin (15).
5. The detachable and combinable wheel jack according to claim 4, characterized in that: The top rod (13) has an "L" shaped cross section.
6. The detachable and combinable wheel jack according to claim 5, characterized in that: Both the pin (12) and the limiting pin (15) are made of maraging steel or titanium alloy.
7. The detachable and combinable wheel jack according to claim 1, characterized in that: The valve assembly (2) is installed on the top of the oil tank (1), and a hand pump (3) is installed on the top of the valve assembly (2). A tow rod (4) is fixed on one side of the oil tank (1).
8. The detachable and combinable wheel jack according to claim 7, characterized in that: The base (5) is located on the other side of the oil tank (1), and the jack body (7) is installed on the top of the base (5). A roller (6) is connected to one side of the base (5).
9. The detachable and combinable wheel jack according to claim 1, characterized in that: The oil line connector (9) is a Parker Snap-Tite 71 series high-pressure quick connector, and the oil line pipe (8) is a multi-layer ultra-high strength steel wire wound hose or an AISI316 seamless steel pipe.