An air charging device for a coupler of an EMU

Abstract

The present invention discloses an air charging device for a motor vehicle coupler, belonging to the field of motor vehicle assembly technology. The device comprises: an air charging tube, the outlet end of which can extend into the interior of the air inlet of the coupler; a main body to which the air charging tube is connected; and a locking mechanism connected to the main body. When the air charging tube is connected to the air inlet of the coupler, the locking mechanism can lock the relative position of the main body and the coupler. The present invention changes the locking method between the air charging device and the coupler, making the assembly and disassembly of the air charging device easy and flexible, reducing labor intensity, reducing the number of operators, and improving work efficiency and operational safety.

Description

Technical Field

[0001] The invention belongs to the technical field of EMU assembly, and in particular relates to an air charging device for an EMU coupler. Background Art

[0002] When the existing air charging device inflates the coupler, the sealing between the air charging device and the air inlet of the coupler is achieved by pressing the rubber sealing ring face to face. This connection method requires thick materials to ensure the sealing effect without deformation when applying a large pressure to the air charging device, resulting in the overall air charging device being relatively bulky.

[0003] In actual operation, the current coupler air charging device requires one person to forcefully pull open the tongue spring handle of the coupler, and another person to lift the air charging tool and insert it into the coupler tongue spring, and then release the tongue spring handle so that the tongue spring tightly fastens the air charging tool to tightly connect the rubber sealing ring of the air charging port on the tool and the rubber sealing ring of the air inlet of the coupler. This air charging tool is cumbersome to operate, there is a risk of falling and injury, the labor intensity is high and the work efficiency is low.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] In order to solve at least some of the above-mentioned problems, the present invention provides an EMU coupler air charging device, which changes the locking method between the air charging device and the coupler, making the disassembly and assembly of the air charging device easy and flexible, reducing labor intensity, reducing the number of operators, and improving work efficiency and operation safety factor.

[0006] The basic concept of the technical solution adopted in the present invention is:

[0007] An air charging device for a coupler of an EMU train comprises:

[0008] The air outlet end of the air inlet pipe can be inserted into the air inlet of the coupler;

[0009] a main body, the inflation tube being connected to the main body;

[0010] The locking mechanism is connected to the main body, and when the inflation tube is connected to the air inlet of the coupler, the locking mechanism can lock the relative position of the main body and the coupler.

[0011] Furthermore, the inflation tube includes a main section and a docking section, and the docking section can be inserted into the air inlet of the coupler;

[0012] An elastic annular sealing member is provided on the outer side of the docking section, and the sealing member is sleeved on the docking section;

[0013] Preferably, there are multiple sealing members and they are arranged at intervals along the extension direction of the docking section.

[0014] Furthermore, the main body includes an upper half and a lower half;

[0015] When the inflation tube is connected to the air inlet of the coupler, the head end of the upper half abuts against the front end surface of the coupler; the head end of the lower half extends to the back surface of the coupler.

[0016] Furthermore, the locking mechanism includes:

[0017] a stopper pivotally connected to the head end of the lower half;

[0018] The control assembly is connected to the stopper and is used to control the rotation of the stopper so as to switch the stopper between a locked state and a released state.

[0019] Furthermore, the control component includes:

[0020] A sliding block is slidably connected to the lower half, and the sliding block moves from the head end to the tail end of the lower half;

[0021] a connecting rod, one end of which is hinged to the stopper, and the other end of which is hinged to the sliding block;

[0022] When the sliding block moves from the tail end to the head end of the lower half, the stopper turns to a locked state, and when the sliding block moves from the head end to the tail end of the lower half, the stopper turns to a released state;

[0023] Preferably, a handle is provided on the sliding block.

[0024] Furthermore, the sliding block is slidably connected to the bottom end surface of the lower half;

[0025] An extension portion extending downward is fixedly provided on the pivot;

[0026] One end of the connecting rod connected to the stopper is hinged on the extension portion.

[0027] Furthermore, a guide rail is provided on the bottom surface of the lower half, and the extension direction of the guide rail is provided from the tail end to the head end of the lower half; when the sliding block moves, it moves along the extension direction of the guide rail;

[0028] Preferably, there are two guide rails, and the sliding block is located between the two guide rails.

[0029] Furthermore, a positioning pin is provided on the bottom end surface of the lower half, and when the sliding block moves toward the tail end of the lower half and abuts against the positioning pin, the stopper is in a released state.

[0030] Furthermore, a locking pin is provided on the lower half. When the stopper is in a locked state, the locking pin can be connected to the sliding block and restrict the sliding block from moving toward the tail end of the lower half.

[0031] Furthermore, the lower half is provided with a vertically arranged through hole;

[0032] The locking pin is movably arranged in the through hole;

[0033] When the sliding block moves toward the head end of the lower half and causes the stopper to rotate to a locked state, the locking pin automatically falls down and abuts against a side wall of the sliding block facing the tail end of the lower half.

[0034] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0035] 1. When the air inlet of the coupler is inflated with air by the practical air charging device, the outlet end of the air charging tube of the air charging device is inserted into the interior of the air inlet of the coupler, and the existing face-to-face compression sealing method is replaced by the sealing between the outer wall of the air charging tube and the hole wall of the air inlet of the coupler. The sealing between the outer wall of the air charging tube and the hole wall of the air inlet of the coupler does not need to rely on the weight of the air charging device, thereby realizing a lightweight design of the air charging device.

[0036] 2. When locking the air charging device and the coupler, it can be operated by one person. Just push the sliding block toward the head end of the lower half to connect the air charging device and the coupler, which reduces labor intensity, reduces the number of operators, and improves work efficiency and operation safety factor.

[0037] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0039] Figure 1 This is a structural schematic diagram of the EMU coupler air charging device of the present invention, in which the stopper is in a locked state;

[0040] Figure 2 2. It is a cross-sectional view of the inflation pipe of the EMU coupler inflation device of the present invention;

[0041] Figure 3 yes Figure 2A partial enlarged view of part A in the middle;

[0042] Figure 4 This is a structural schematic diagram of the EMU coupler air charging device of the present invention in a released state;

[0043] Figure 5 This is a schematic structural diagram of the bottom end of the main body of the EMU coupler air charging device of the present invention, with the stopper in a released state;

[0044] Figure 6 It is a cross-sectional view of the connection structure between the locking pin and the lower half of the EMU coupler air charging device of the present invention, with the stopper in the released state;

[0045] Figure 7 The invention is a cross-sectional view of the connection structure between the locking pin and the lower half of the coupler air charging device of an EMU when the stopper is in a locked state.

[0046] In the figure: 1. main body; 11. upper half; 12. lower half; 121. guide rail; 1211. vertical part; 1212. horizontal part; 122. through hole; 2. inflation tube; 21. main section; 22. docking section; 221. annular groove; 23. quick connector; 24. O-ring; 3. locking mechanism; 31. stop; 311. pivot; 312. extension; 32. control assembly; 321. sliding block; 3211. handle; 322. connecting rod; 4. positioning pin; 5. locking pin; 51. locking rod; 52. locking cap.

[0047] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] like Figures 1 to 7 As shown, the present invention discloses an air charging device for a coupler of an EMU.

[0052] The EMU coupler air charging device includes a main body 1, and an air charging tube 2 is fixed on the top of the main body 1. The air charging tube 2 is used to connect with the air inlet of the coupler. When the air charging tube 2 is connected with the air inlet of the coupler, the air outlet end of the air charging tube 2 can extend into the interior of the air inlet of the coupler. The outer wall of the area where the air charging tube 2 extends into the interior of the air inlet of the coupler is in sealed contact with the inner wall of the air inlet of the coupler. A locking mechanism 3 is provided at the bottom of the main body 1. When the air charging tube 2 is connected with the air inlet of the coupler, the locking mechanism 3 locks the relative position of the main body 1 and the coupler, so that the EMU coupler air charging device and the coupler are fixed together.

[0053] In this embodiment, the main body 1 includes an upper half 11 and a lower half 12, which are arranged vertically and welded to each other. The upper half 11 is shorter than the lower half 12. The projections of both ends of the upper half 11 toward the lower half 12 are located on the side of the lower half 12 facing the upper half 11.

[0054] In this embodiment, the main body 1 has two ends, one of which is the head end of the main body 1 and the other is the tail end of the main body 1. When the EMU coupler air charging device is connected to the coupler, the head end of the main body 1 faces the direction of the coupler, and the tail end of the main body 1 faces away from the direction of the coupler.

[0055] Specifically, a step is formed between the upper half 11 and the lower half 12. When the EMU coupler air charging device is docked with the coupler, the head end face of the upper half 11 abuts the front end face of the coupler, while the head end of the lower half 12 extends from the bottom of the coupler to the back of the coupler. The locking mechanism 3 is connected to the lower half 12. The locking mechanism 3 on the main body 1 can abut against the back of the coupler, so that the upper half 11 and the locking mechanism 3 clamp the coupler, locking the relative position of the EMU coupler air charging device and the coupler.

[0056] In this embodiment, the inflation tube 2 includes a main body section 21 and a docking section 22. The main body section 21 and the docking section 22 are internally connected, and the main body section 21 and the docking section 22 are integrally formed. The outer diameter of the docking section 22 is compatible with the aperture of the air inlet of the coupler. The docking section 22 is fixed to the top of the upper half 11 by welding. The docking section 22 extends to the front side of the head end of the upper half 11. On the side of the main body section 21 facing away from the docking section 22, a quick connector 23 is connected to the main body section 21. The quick connector 23 and the main body section 21 can be fixed together by threaded connection or by welding. Through the quick connector 23, the air source can be quickly docked with the inflation tube 2.

[0057] In this embodiment, a plurality of annular grooves 221 are provided at intervals along the extended square of the docking section 22 on the outer surface of the docking section 22, and an elastic O-ring 24 is installed inside each annular groove 221. The outer diameter of the O-ring 24 is larger than the outer diameter of the docking section 22, so that the outer surface of the O-ring 24 protrudes from the outer surface of the docking section 22.

[0058] When the docking section 22 is inserted into the air inlet of the coupler, the outer surface of the O-ring 24 abuts against the hole wall of the air inlet of the coupler, and the O-ring is in an extruded state. The elasticity of the O-ring 24 is used to achieve a seal between the docking section 22 and the hole wall of the air inlet of the coupler, while not affecting the movement of the docking section 22 in the air inlet of the coupler, thereby avoiding air leakage at the air inlet of the coupler when the docking section 22 and the air inlet of the coupler are docked and inflated.

[0059] In this embodiment, the locking mechanism 3 includes a stopper 31 rotatably connected to the front end of the lower half 12. One end of the stopper 31 is rotatably connected to the lower half 12, serving as the rotational end of the stopper 31, while the other end of the stopper 31 is freely disposed as the free end of the stopper 31. The locking mechanism 3 also includes a control assembly 32 connected to the bottom surface of the lower half 12. The control assembly 32 is connected to the stopper 31 and is used to control the rotation of the stopper 31.

[0060] Specifically, the stopper 31 has two positions: one locked and the other released. When the stopper 31 is in the locked position, the stopper 31 is vertical, meaning the free end of the stopper 31 is above the rotating end of the stopper 31. The free end of the stopper 31 is located above the lower half 12 and horizontally opposite the upper half 11. When the stopper 31 is in the released position, the stopper 31 is horizontal, meaning the free end of the stopper 31 and the rotating end of the stopper 31 are at the same level.

[0061] In this embodiment, two parallel guide rails 121 are provided on the bottom surface of the lower half 12. The guide rails 121 are welded to the lower half 12. The two guide rails 121 extend in the same direction as the lower half 12. A distance is left between the two guide rails 121.

[0062] The rotating end of the stopper 31 is rotatably connected between the two guide rails 121 via a pivot 311. The stopper 31 and the pivot 311 are fixed by welding.

[0063] Preferably, there are two stops 31 , and both stops 31 are connected to the pivot 311 . The two stops 31 clamp the head end of the lower half 12 between the two stops 31 .

[0064] Specifically, the guide rail 121 includes a vertical portion 1211 connected to the lower half 12. The top of the vertical portion 1211 is fixedly connected to the lower half 12 by welding. The bottom of the vertical portion 1211 is provided with a horizontal portion 1212 extending horizontally in the direction of the other guide rail 121. The horizontal portion 1212 and the vertical portion 1211 are integrally formed or fixed together by welding. A sliding groove is formed between the horizontal portion 1212 and the bottom surface of the lower half 12.

[0065] In this embodiment, the control assembly 32 includes a sliding block 321 slidably connected between the two guide rails 121. The sliding block 321 moves along the extension direction of the guide rails 121. The sliding block 321 extends toward one side of the guide rails 121 and enters a sliding groove formed between the horizontal portion 1212 and the bottom end surface of the lower half 12.

[0066] A connecting rod 322 is provided on the sliding block 321 . One end of the connecting rod 322 is hinged to the sliding block 321 , and the other end of the connecting rod 322 is hinged to the stopper 31 .

[0067] Specifically, an extension portion 312 extending downward from the lower half 12 is provided on the pivot 311 of the stopper 31, and the extension portion 312 is welded and fixed to the pivot 311. A connecting rod 322 is hinged to one end of the extension portion 312 away from the pivot 311.

[0068] In this embodiment, in order to facilitate the control of the movement of the sliding block 321 , a handle 3211 is fixed to the sliding block 321 , and the handle 3211 is used to apply force to the sliding block 321 to push the sliding block 321 to reciprocate between the two guide rails 121 .

[0069] When the sliding block 321 is pushed to move toward the head end of the lower half 12, the connecting rod 322 located between the stopper 31 and the sliding block 321 pushes the stopper 31 to flip, so that the free end of the stopper 31 flips toward the top of the lower half 12, and the stopper 31 rotates to a locked state.

[0070] When the sliding block 321 is pushed to move toward the tail end of the lower half 12, the connecting rod 322 located between the stopper 31 and the sliding block 321 pulls the stopper 31 to flip, causing the free end of the stopper 31 to flip toward the bottom of the lower half 12, so that the stopper 31 rotates to a loose state.

[0071] In this embodiment, a positioning pin 4 is provided between the two guide rails 121 and is fixed to the bottom surface of the lower half 12. When the sliding block 321 moves toward the rear end of the lower half 12, it abuts against the positioning pin 4, which blocks the sliding block 321 and restricts its further movement toward the rear end of the lower half 12. When the sliding block 321 abuts against the positioning pin 4, the stopper 31 is released.

[0072] In this embodiment, a through hole 122 is provided vertically through the lower portion 12. Through hole 122 is located on the side of the positioning pin 4 facing the front end of the lower portion 12. A locking pin 5 is inserted into through hole 122. When the control assembly 32 controls the stop 31 to flip to the locked position, the locking pin 5 automatically drops, thereby locking the control assembly 32 and maintaining the stop 31 in the locked position.

[0073] Specifically, the locking pin 5 includes a locking rod 51 and a locking cap 52 located at one end of the locking rod 51, and the locking rod 51 and the locking cap 52 are integrally formed. The locking rod 51 is clearance-fitted with the through-hole 122, and the locking rod 51 can pass through the through-hole 122 and can move vertically in the through-hole 122. When the locking pin 5 is inserted into the through-hole 122, the locking cap 52 is located above the lower half 12. The diameter of the locking cap 52 is larger than the aperture of the through-hole 122. The length dimension of the locking rod 51 is larger than the height dimension of the lower half 12, so that when the locking cap 52 abuts against the upper surface of the lower half 12, the bottom of the locking rod 51 can move to the bottom of the lower half 12.

[0074] When the locking rod 51 of the locking pin 5 is inserted into the through hole 122 and the bottom of the locking rod 51 moves to the bottom of the lower half 12, the bottom of the locking rod 51 is located between the two guide rails 121. The locking pin 5 is located on the side of the positioning pin 4 facing the head end of the lower half 12.

[0075] When the sliding block 321 moves toward the leading end of the lower half 12, locking the stopper 31, the sliding block 321 is horizontally misaligned with the locking pin 5 and located on the side of the locking pin 5 facing the leading end of the lower half 12. When the sliding block 321 is horizontally misaligned with the locking pin 5, the locking pin 5 falls under the force of gravity, causing the locking rod 51 to move downward and position its bottom between the two guide rails 121. When the locking rod 51 falls and its bottom is located between the two guide rails 121, it restricts the sliding block 321 from moving toward the trailing end of the lower half 12, maintaining the stopper 31 in its locked state.

[0076] When the sliding block 321 abuts against the positioning pin 4, the sliding block 321 is located below the through hole 122. The sliding block 321 can support the locking pin 5 so that the bottom of the locking rod 51 of the locking pin 5 is located inside the through hole 122, and the bottom end face of the locking rod 51 abuts against the sliding block 321.

[0077] When inflating the EMU coupler, first release the stopper 31 of the control mechanism, then insert the docking section 22 of the inflation tube 2 into the air inlet of the coupler, and bring the head end of the upper half 11 of the main body 1 into contact with the front end face of the coupler. Use the handle 3211 to apply force to the sliding block 321, pushing it toward the head end of the lower half 12. As the sliding block 321 continues to move toward the head end of the lower half 12, the connecting rod 322 pushes the stopper 31 to flip until it flips to the locked state, at which point the stopper 31 is stuck on the back of the coupler. The locking pin 5 then falls under the influence of gravity and abuts against the side wall of the sliding block 321 facing the tail end of the lower half 12, limiting the movement of the sliding block 321 toward the tail end of the lower half 12 and keeping the stopper 31 locked.

[0078] In some other embodiments, the through hole 122 may be a threaded hole, the locking pin 5 may be a bolt, and the locking pin 5 is threadedly connected to the through hole 122 .

[0079] When the sliding block 321 moves toward the leading end of the lower half 12 and the stopper 31 flips to the locked state, the locking pin 5 is rotated to move toward the bottom end of the lower half 12, causing the locking rod 51 of the locking pin 5 to abut against the side wall of the sliding block 321 facing the trailing end of the lower half 12. When the coupler inflation device needs to be separated from the coupler, the locking pin 5 is rotated in the opposite direction, causing the bottom of the locking pin 5 to move above the lower half 12 and retract into the through hole 122, thereby moving the sliding block 321 toward the trailing end of the lower half 12.

[0080] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An air-charging device for a coupler of an EMU, characterized in that: The invention comprises: an air-inflating tube (2), the outlet end of which can extend into the interior of the air inlet of the coupler; a main body (1), the air-inflating tube (2) being connected to the main body (1); a locking mechanism (3) connected to the main body (1), and when the air-inflating tube (2) is connected to the air inlet of the coupler, the locking mechanism (3) can lock the relative position of the main body (1) and the coupler; The main body (1) includes an upper half (11) and a lower half (12); when the inflation tube (2) is connected to the air inlet of the coupler, the head end of the upper half (11) abuts against the front end face of the coupler; the head end of the lower half (12) extends to the back face of the coupler; The locking mechanism (3) comprises: a stopper (31) rotatably connected to the head end of the lower half (12) via a pivot (311); a control assembly (32) connected to the stopper (31) and used to control the rotation of the stopper (31) so as to switch the stopper (31) between a locked state and a released state; The control assembly (32) comprises: a sliding block (321) slidably connected to the lower half (12), and the moving direction of the sliding block (321) is set from the head end to the tail end of the lower half (12); a connecting rod (322), one end of which is hinged to the stopper (31), and the other end of which is hinged to the sliding block (321); when the sliding block (321) moves from the tail end to the head end of the lower half (12), the stopper (31) is turned to a locked state, and when the sliding block (321) moves from the head end to the tail end of the lower half (12), the stopper (31) is turned to a released state.

2. The air-charging device for the EMU coupler according to claim 1, characterized in that: The inflation tube (2) comprises a main body section (21) and a docking section (22), wherein the docking section (22) can be extended into the air inlet of the coupler; an elastic annular sealing member is provided on the outer side of the docking section (22), and the sealing member is sleeved on the docking section (22).

3. The air-charging device for the EMU coupler according to claim 2, characterized in that: There are multiple sealing members, which are arranged at intervals along the extending direction of the butt joint section (22).

4. The air-charging device for the EMU coupler according to claim 1, characterized in that: The sliding block (321) is provided with a handle (3211).

5. The air-charging device for the EMU coupler according to claim 1, characterized in that: The sliding block (321) is slidably connected to the bottom surface of the lower half (12); an extension portion (312) extending downward is fixedly provided on the pivot (311); and one end of the connecting rod (322) connected to the stopper (31) is hinged on the extension portion (312).

6. The EMU coupler air charging device according to claim 1, characterized in that: A guide rail (121) is provided on the bottom surface of the lower half (12), and the extension direction of the guide rail (121) is set from the tail end to the head end of the lower half (12); when the sliding block (321) moves, it moves along the extension direction of the guide rail (121).

7. The air-charging device for the EMU coupler according to claim 6, characterized in that: There are two guide rails (121), and the sliding block (321) is located between the two guide rails (121).

8. The air-charging device for the EMU coupler according to claim 1, characterized in that: A positioning pin (4) is provided on the bottom surface of the lower half (12), and when the sliding block (321) moves toward the tail end of the lower half (12) and abuts against the positioning pin (4), the stopper (31) is in a released state.

9. The EMU coupler air charging device according to claim 1, characterized in that: A locking pin (5) is provided on the lower half (12). When the stopper (31) is in a locked state, the locking pin (5) can be connected to the sliding block (321) and restrict the sliding block (321) from moving toward the tail end of the lower half (12).

10. The EMU coupler air charging device according to claim 9, characterized in that: The lower half (12) is provided with a vertically arranged through hole (122); the locking pin (5) is movably arranged in the through hole (122); when the sliding block (321) moves toward the head end of the lower half (12) and the stopper (31) is turned to a locked state, the locking pin (5) automatically falls and abuts against a side wall of the sliding block (321) facing the tail end of the lower half (12).

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