A railway passenger car water supply quick connector

Abstract

The present invention discloses a railway passenger car water supply quick connector, comprising a clamping claw, a guide tube, a sliding sleeve, a tensioning mechanism, and a connecting pipe. The tensioning mechanism comprises an upper threaded sleeve, a connecting sleeve, a lower threaded sleeve, and an electromagnet. The connecting sleeve is threadedly connected to the upper and lower threaded sleeves, and the electromagnet is fixedly mounted on the connecting pipe. The upper portion of the upper threaded sleeve is hingedly connected to at least two clamping claws along the circumferential direction by a connecting pin, and the sliding sleeve is mounted on the outer sides of the at least two clamping claws. The present invention utilizes the structural characteristics of the ridge boss of the railway passenger car water supply port, uses a sliding sleeve to control the clamping and opening of the clamping claws on the ridge boss of the railway passenger car water supply port, and controls the rapid connection and disconnection of the water supply connector and the railway passenger car water supply port by rotating the connecting sleeve and the electromagnet. The present invention achieves the technical advantages of easy operation, easy control, reliable sealing, and simple structure in the connection between the water supply connector and the railway passenger car water supply port, thereby solving the problems of time-consuming, labor-intensive, and low automation level in railway passenger car water supply operations.

Description

Technical Field

[0001] The invention belongs to the technical field of water supply equipment for railway passenger cars, and in particular relates to a quick water supply connector for railway passenger cars. Background Art

[0002] The traditional method of filling railway passenger cars with water at depots, departure stations, and stops is to manually insert a water supply hose from a ground plug well into the car's water inlet. The hose's elastic force holds the car's water inlet tightly, achieving a sealed connection and filling the water supply. Once the water supply is complete, the hose is manually removed. Due to the uncertainty of the hose's elastic force, filling the water supply is time-consuming and labor-intensive for operators, resulting in prolonged water supply operations for railway passenger cars and even safety accidents caused by delayed water supply operations. With the rapid development of my country's railway construction and the comprehensive improvement of railway technology and equipment, it is imperative to rationally solve the connection method between the ground plug well water supply hose and the car's water inlet. Designing a quick connector between the hose and the water inlet that can meet the requirements for safe water supply for railway passenger cars is particularly important. Summary of the Invention

[0003] The purpose of the present invention is to provide a railway passenger car water supply quick connector to solve the problems in the background art proposed that the traditional railway passenger car water supply pipe connection type that relies on the elastic force of the hose to hold the water injection port tightly is poor in reliability and time-consuming and labor-intensive to operate, and effectively solve the impact of the railway passenger car water supply connection type on railway operations.

[0004] To achieve the above-mentioned purpose, the present invention provides a railway passenger car water supply quick connector, comprising a claw, a guide tube, a sliding sleeve, a tightening mechanism and a connecting pipe, one end of the connecting pipe is connected to the water hose on the bolt well, and the other end of the connecting pipe is connected to one end of the guide tube, the tightening mechanism comprises an upper threaded sleeve, a connecting sleeve, a lower threaded sleeve and an electromagnet, the upper threaded sleeve and the lower threaded sleeve are movably sleeved on the guide tube along the axial direction, the connecting sleeve is threadedly connected to the upper threaded sleeve and the lower threaded sleeve, and the electromagnet is fixedly arranged on the connecting pipe; the upper part of the upper threaded sleeve is hinged with at least two claws along the circumferential direction through a connecting pin, the sliding sleeve is sleeved on the outside of the at least two claws, the sliding sleeve can slide along the axial direction of the guide tube and control the closing or opening of the claws; a limit block is provided on the outer circumferential surface of the guide tube for limiting its movement range, and the guide tube is used to connect with the railway passenger car A guide joint is provided at one end of the water filling port; when the water supply quick connector needs to be connected to the water filling port of the railway passenger car, the electromagnet is first energized, and the electromagnet is attracted to the lower threaded sleeve after being energized; then the sliding sleeve is moved to open the at least two claws, and the guide tube is aligned with the water filling port of the railway passenger car; then the sliding sleeve is pushed to tightly clamp the at least two claws, and the at least two claws are closed above the convex boss of the water filling port of the railway passenger car and hold the water filling port of the railway passenger car; then the connecting sleeve is rotated forward to make the upper threaded sleeve and the lower threaded sleeve move toward each other, and the lower threaded sleeve drives the guide tube to move upward through the electromagnet, and the upper threaded sleeve drives the claws to move downward, and with the help of the thrust effect of the convex boss of the water filling port of the railway passenger car on the claws, the water supply quick connector is tightly connected to the water filling port of the railway passenger car.

[0005] Furthermore, after the water filling operation is completed, the electromagnet loses power and loses its magnetic force, the electromagnet detaches from the lower threaded sleeve, the guide tube detaches from the railway passenger car water filling port under the action of gravity and drives the sliding sleeve to move, the sliding sleeve releases the restraint on the claw, and the water filling quick connector automatically detaches from the railway passenger car water filling port.

[0006] Furthermore, a wedge block is provided in the sliding sleeve and corresponds to each of the clamping claws. The side of each of the wedge blocks facing the clamping claws is tilted from top to bottom and from outside to inside.

[0007] Furthermore, a mounting groove is provided on one side of each wedge block connected to the sliding sleeve, and a plurality of mounting bosses corresponding one-to-one to the plurality of mounting grooves are provided on the inner side of the sliding sleeve.

[0008] Furthermore, the lower part of the guide joint is sleeved on the outer side of the upper part of the guide tube, and a guide hole which is wider at the top and narrower at the bottom is provided on the inner side of the upper part of the guide joint, and the aperture of the lower end of the guide hole is larger than the outer diameter of the guide tube. A sealing gasket mounting ring groove is also provided on the inner side of the upper part of the guide joint and at the lower end of the guide hole; a sealing gasket is provided on the end face of the guide tube for docking with the water filling port of the railway passenger car, and the outer peripheral side of the sealing gasket is inserted into the sealing gasket mounting ring groove.

[0009] Furthermore, a guard plate is provided at the lower end of the lower threaded sleeve, and an annular mounting cavity is formed between the guard plate and the guide tube, and the upper end of the electromagnet and the connecting pipe is arranged in the annular mounting cavity.

[0010] Furthermore, the inner wall cross section of the guide tube is circular, and the outer wall cross section is polygonal.

[0011] The present invention also provides a railway passenger car water supply quick connector, comprising a claw, a guide tube, a sliding sleeve, a tightening mechanism and a connecting pipe, one end of the connecting pipe is connected to the water supply hose of the bolt well, and the other end of the connecting pipe is connected to one end of the guide tube, the tightening mechanism comprises an upper threaded sleeve, a connecting sleeve and a lower threaded sleeve, the upper threaded sleeve and the lower threaded sleeve are movably sleeved on the guide tube along the axial direction, the connecting sleeve is threadedly connected to the upper threaded sleeve and the lower threaded sleeve, and the lower threaded sleeve is fixedly connected to the other end of the connecting pipe; the upper part of the upper threaded sleeve is hinged with at least two claws along the circumferential direction through a connecting pin, the sliding sleeve is sleeved on the outside of the at least two claws, the sliding sleeve can slide along the axial direction of the guide tube, and control the closing or closing of the claws Open; a limit block is provided on the outer circumference of the guide tube for limiting its movement range, and a guide joint is provided on one end of the guide tube for docking with the water filling port of a railway passenger car; when the water supply quick connector needs to be connected to the water filling port of a railway passenger car, the sliding sleeve is first moved to make the at least two claws in an open state, and the guide tube is aligned with the water filling port of the railway passenger car; then the sliding sleeve is pushed to tightly clamp the at least two claws, and the at least two claws are closed above the convex boss of the water filling port of the railway passenger car and hold the water filling port of the railway passenger car; then the connecting sleeve is rotated, and the thrust effect of the convex boss of the water filling port of the railway passenger car on the claws is used to tightly connect the water supply quick connector to the water filling port of the railway passenger car.

[0012] Furthermore, after the water filling operation is completed, the connecting sleeve is rotated in the opposite direction to make the upper threaded sleeve and the lower threaded sleeve move in opposite directions, the lower threaded sleeve drives the guide tube to move downward, and the upper threaded sleeve drives the claw to move upward, and moves the sliding sleeve toward the side facing away from the water filling port of the railway passenger car, releasing the restraint of the sliding sleeve on the claw, and the claw opens to make the water filling quick connector detach from the water filling port of the railway passenger car.

[0013] Furthermore, a flange is provided on the outer side of one end of the connecting pipe connected to the lower threaded sleeve, and the connecting pipe is detachably fixedly connected to the lower threaded sleeve via the flange.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) A railway passenger car water supply quick connector of the present invention comprises a clamping claw, a guide tube, a sliding sleeve, a tightening mechanism and a connecting pipe, wherein the tightening mechanism comprises an upper threaded sleeve, a connecting sleeve, a lower threaded sleeve and an electromagnet. When the electromagnet is energized, the clamping claw is attracted to and opened by the lower threaded sleeve with the aid of the structural characteristics of the convex boss of the railway passenger car water supply port, and the quick connection and disassembly of the water supply connector and the railway passenger car water supply port are controlled by rotating the connecting sleeve and the electromagnet; when the electromagnet is out of power, the connection and disassembly of the water supply quick connector and the railway passenger car water supply port can also be completed manually; this structure achieves the technical effects of easy operation, easy control, reliable sealing and simple structure of the docking of the water supply connector and the railway passenger car water supply port, and solves the problems of time-consuming, labor-intensive and low degree of automation in the operation of water supplying the railway passenger car.

[0016] (2) A railway passenger car water supply quick connector of the present invention comprises a clamping claw, a guide tube, a sliding sleeve, a tightening mechanism and a connecting pipe, wherein the tightening mechanism comprises an upper threaded sleeve, a connecting sleeve and a lower threaded sleeve, and the lower threaded sleeve is directly fixedly connected to the other end of the connecting pipe. The sliding sleeve is used to control the clamping claw to clamp and open the convex edge of the railway passenger car water filling port, and the connecting sleeve is rotated to control the quick connection and disassembly of the water supply connector and the railway passenger car water filling port; this structure also achieves the technical effects of easy operation, easy control, reliable sealing and simple structure of the water supply connector and the railway passenger car water filling port, thereby solving the problems of time-consuming, labor-intensive and low degree of automation in the operation of water supplying the railway passenger car.

[0017] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural diagram of a railway passenger car water supply quick connector embodiment 1 of the present invention, with the claws in a closed state;

[0020] Figure 2 This is a structural diagram of a railway passenger car water supply quick connector embodiment 1 of the present invention, with the claws in an open state;

[0021] Figure 3 This is a structural diagram of a second embodiment of a railway passenger car water supply quick connector according to the present invention;

[0022] Figure 4 This is a structural diagram of a third embodiment of a railway passenger car water supply quick connector according to the present invention;

[0023] Among them, 1-sealing gasket, 2-claw, 3-guide tube, 4-sliding sleeve, 5-pin shaft, 6-upper threaded sleeve, 7-connecting sleeve, 8-lower threaded sleeve, 9-electromagnet, 10-connecting pipe, 11-water hose on the bolt well, 12-railway passenger car water injection port, 13-guide joint, 14-wedge block, 15-flange, a-annular mounting cavity. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] Example 1

[0026] See Figure 1 and Figure 2 This embodiment provides a railway passenger car water supply quick connector, which is used to connect the water supply hose 11 of the bolt well with the water injection port 12 of the railway passenger car. The water supply quick connector includes a claw 2, a guide tube 3, a sliding sleeve 4, a tightening mechanism and a connecting pipe 10. The specific structure is as follows:

[0027] The water hose 11 on the bolt well is sleeved on one end of the connecting pipe 10, and the other end of the connecting pipe 10 is sleeved on one end of the guide pipe 3. The tensioning mechanism includes an upper threaded sleeve 6, a connecting sleeve 7, a lower threaded sleeve 8 and an electromagnet 9. The upper threaded sleeve 6 and the lower threaded sleeve 8 are sleeved on the guide pipe 3. The inner wall cross-section of the guide pipe 3 is circular, and the outer wall cross-section is polygonal, that is, the guide pipe uses a polygonal outer surface as a guide surface. The connecting sleeve 7 is threadedly connected to the upper threaded sleeve 6 and the lower threaded sleeve 8. The electromagnet 9 is fixedly set on the connecting pipe 10, and the electromagnet 9 can be attracted to the lower threaded sleeve 8 by magnetic force. The upper part of the upper threaded sleeve 6 is hinged with three claws 2 along the circumferential direction through the connecting pin 5, and the sliding sleeve 4 is sleeved on the outside of the three claws. In this structural setup, the sliding sleeve can slide axially along the guide tube 3 and control the closing or opening of the claw 2. The upper and lower threaded sleeves can slide axially along the guide tube. The connecting sleeve 7 is connected to the upper and lower threaded sleeves via threads with opposite rotations, forming a tensioning mechanism. An annular boss is formed on the outer surface of the connecting pipe end that connects to the water hose on the bolt well and the end of the guide tube inserted into the connecting pipe. The guide tube 3 and the connecting pipe 10 are connected as a whole and are attracted to the lower threaded sleeve by an electromagnet 9 fixed to the connecting pipe. Rotating the connecting sleeve 7 causes the upper and lower threaded sleeves to move relative to each other, driving the claw and the guide tube to move relative to each other. The outer circumference of the guide tube 3 is provided with a limit block to limit its range of movement, and the end of the guide tube 3 that connects to the railway coach water inlet 12 is provided with a guide joint 13.

[0028] A wedge block 14 is positioned within the sleeve 4, corresponding to each jaw 2. Each wedge block is tilted from top to bottom and from outward to inward on the side facing the jaw 2. Each wedge block 14 has a mounting groove on the side where it connects to the sleeve. The inside of the sleeve 4 is equipped with multiple mounting bosses that correspond to the mounting grooves. This structural arrangement facilitates the sleeve's control of the jaw's state.

[0029] The lower portion of the guide joint 13 is sleeved onto the upper outer side of the guide tube. A guide hole, wider at the top and narrower at the bottom, is provided on the upper inner side of the guide joint. The diameter of the lower end of the guide hole is larger than the outer diameter of the guide tube. A sealing gasket mounting groove is also provided on the upper inner side of the guide joint and at the lower end of the guide hole. A sealing gasket 1 is provided on the end face of the guide tube 3 that interfaces with the railway carriage water inlet 12. The outer circumference of the sealing gasket is inserted into the sealing gasket mounting groove. This structural arrangement not only effectively secures the sealing gasket but also ensures a tight connection between the water supply quick connector and the railway carriage water inlet 12, resulting in a reasonable structural arrangement. A guard plate is also provided at the lower end of the lower threaded sleeve 8. An annular mounting cavity a is formed between the guard plate and the guide tube 3. The electromagnet 9 and the upper end of the connecting pipe are disposed within this annular mounting cavity. This structural arrangement protects the electromagnet and connecting pipe while also enhancing the aesthetics of the water supply quick connector.

[0030] When the water supply quick connector needs to be connected to the water filling port 12 of the railway passenger car, the electromagnet 9 is first energized, and the electromagnet 9 is attracted to the lower threaded sleeve 8 after being energized; then the sliding sleeve 4 is moved to open the three claws, and the guide tube 3 is aligned with the water filling port 12 of the railway passenger car; then the sliding sleeve 4 is pushed to one side of the water filling port 12 of the railway passenger car, so that the sliding sleeve tightly clamps the three claws, and the three claws close above the convex portion of the water filling port 12 of the railway passenger car, and hold the water filling port 12 of the railway passenger car; then the connecting sleeve 7 is rotated forward to move the upper threaded sleeve 6 and the lower threaded sleeve 8 toward each other, and the lower threaded sleeve 8 drives the guide tube to move upward through the electromagnet 9, and the upper threaded sleeve 6 drives the claws 2 to move downward, and with the help of the thrust effect of the convex portion of the water filling port 12 of the railway passenger car on the claws 2, the water supply quick connector is tightly connected to the water filling port 12 of the railway passenger car.

[0031] After the water filling operation is completed, the electromagnet 9 loses power and loses its magnetic force, the electromagnet and the lower threaded sleeve are disengaged, and the tension of the tensioning mechanism is released; the guide tube and the connecting pipe, electromagnet, and bolt well water supply hose 11 fixed thereto are separated from the railway passenger car water filling port under the action of their own weight; during the process of the guide tube falling off, the sliding sleeve is driven to move toward the side of the upper threaded sleeve, releasing the sliding sleeve from the clamping claw, the clamping claw opens, and the water filling quick connector is separated from the railway passenger car water filling port.

[0032] When the electromagnet cannot be attracted due to lack of power, the rotating connecting sleeve can drive the lower threaded sleeve and the guide pipe and connecting pipe connected as one to move, thereby realizing manual connection and disassembly of the water supply quick connector and the water filling port of the bus.

[0033] Example 2

[0034] See Figure 3As shown, this embodiment also provides a railway passenger car water supply quick connector, including a claw 2, a guide tube 3, a sliding sleeve 4, a tightening mechanism and a connecting pipe 10, one end of the connecting pipe 10 is connected to the bolt well water supply hose 11, and the other end of the connecting pipe 10 is connected to one end of the guide tube 3, the tightening mechanism includes an upper threaded sleeve 6, a connecting sleeve 7 and a lower threaded sleeve 8, the upper threaded sleeve 6 and the lower threaded sleeve 8 are movably arranged on the guide tube 3 along the axial direction, the connecting sleeve 7 is threadedly connected to the upper threaded sleeve 6 and the lower threaded sleeve 8, and the lower threaded sleeve 8 is fixedly connected to the other end of the connecting pipe 10; the upper part of the upper threaded sleeve 6 is hinged with three claws 2 along the circumferential direction through a connecting pin 5, the sliding sleeve 4 is mounted on the outside of the three claws, the sliding sleeve can slide along the axial direction of the guide tube 3, and control the closing or opening of the claws 2; a limit block for limiting its movement range is provided on the outer circumferential surface of the guide tube 3, and a guide joint 13 is provided at one end of the guide tube 3 for docking with the railway passenger car water injection port 12. In this structural setting, the connecting sleeve 7 is connected to the upper threaded sleeve 6 and the lower threaded sleeve 8 through threads with opposite rotation directions. Rotating the connecting sleeve 7 can cause the upper threaded sleeve and the lower threaded sleeve to produce relative movement, and through the lower threaded sleeve, the connected connecting pipe 10 and the guide tube 3 and the claw 2 connected to the upper threaded sleeve through the pin 5 produce relative displacement.

[0035] When the water supply quick connector needs to be connected to the water filling port 12 of the railway passenger car, first move the sliding sleeve 4 so that the three claws are in an open state, and align the guide tube 3 with the water filling port 12 of the railway passenger car; then push the sliding sleeve 4 and make it clamp the three claws, and the three claws close above the convex portion of the water filling port 12 of the railway passenger car and hold the water filling port 12 of the railway passenger car; then, with the help of the thrust effect of the convex portion of the water filling port 12 of the railway passenger car on the claws 2, rotate the connecting sleeve 7, and use the tightening mechanism to tightly connect the water supply quick connector to the water filling port 12 of the railway passenger car.

[0036] After the water filling operation is completed, the connecting sleeve 7 is rotated in the opposite direction to release the tension of the tightening mechanism, so that the upper threaded sleeve 6 and the lower threaded sleeve 8 move in opposite directions, the lower threaded sleeve 8 drives the guide tube to move downward, the upper threaded sleeve 6 drives the claw 2 to move upward, and moves the sliding sleeve 4 toward the side facing away from the water filling port 12 of the railway passenger car, releasing the restraint of the sliding sleeve on the claw 2, the claw can be opened, and the water filling quick connector can be separated from the water filling port of the railway passenger car.

[0037] Example 3

[0038] See Figure 4As shown, this embodiment further provides a railway passenger car water supply quick connector, comprising a clamping claw 2, a guide tube 3, a sliding sleeve 4, a tensioning mechanism, and a connecting pipe 10. The tensioning mechanism comprises an upper threaded sleeve 6, a connecting sleeve 7, and a lower threaded sleeve 8. The embodiment differs from that in Example 2 in that a flange 15 is provided on the outer side of the end of the connecting pipe 10 connected to the lower threaded sleeve 8. The connecting pipe 10 is detachably fixedly connected to the lower threaded sleeve 8 via the flange 15. The connecting sleeve is connected to the upper and lower threaded sleeves via threads with opposite rotation directions. Rotating the connecting sleeve causes the upper and lower threaded sleeves to move relative to each other, thereby driving relative displacement of the clamping claw 2, which is connected to the upper threaded sleeve via the pin 5, and the guide tube 3, which is connected to the lower threaded sleeve via the flange 15 and connecting pipe 10.

[0039] During the water filling operation, the guide tube is connected to the water filling port 12 of the railway passenger car, and the sliding sleeve 4 is manually pushed to the side of the railway passenger car water filling port. The sliding sleeve restrains the three claws, and the claws close above the convex portion of the water filling port of the passenger car and hold the water filling port tightly. With the help of the thrust effect of the convex portion of the water filling port of the railway passenger car, the connecting sleeve is rotated, and the tightening mechanism is used to tightly connect the water filling quick connector to the water filling port of the railway passenger car through the sealing gasket 1.

[0040] After the water filling is completed, rotate the connecting sleeve in the opposite direction to release the tension of the tensioning mechanism, move the sliding sleeve back to the side of the water filling port of the railway passenger car, release the constraint of the sliding sleeve on the claw, the claw can be opened, and the water filling quick connector can be separated from the water filling port of the railway passenger car.

[0041] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A railway passenger car water supply quick connector, characterized in that: The invention comprises a clamping claw (2), a guide tube (3), a sliding sleeve (4), a tensioning mechanism and a connecting pipe (10), one end of the connecting pipe (10) is connected to a water hose (11) on a bolt well, and the other end of the connecting pipe (10) is connected to one end of the guide tube (3), the tensioning mechanism comprises an upper threaded sleeve (6), a connecting sleeve (7), a lower threaded sleeve (8) and an electromagnet (9), the upper threaded sleeve (6) and the lower threaded sleeve (8) are axially movably sleeved on the guide tube (3), the connecting sleeve (7) is threadedly connected to the upper threaded sleeve (6) and the lower threaded sleeve (8), and the electromagnet (9) is fixedly arranged on the connecting sleeve (7). The guide tube (10) is provided with a guide joint (13) at one end of the guide tube (3) for connecting with the water inlet (12) of a railway carriage; when the water supply quick connector needs to be connected with the water inlet (12) of the railway carriage, the electromagnet (9) is first energized, and the electromagnet (9) is turned on. (9) After power is turned on, it is attracted together with the lower threaded sleeve (8); then the sliding sleeve (4) is moved to make the at least two claws in an open state, and the guide tube (3) is aligned with the water inlet (12) of the railway passenger car; then the sliding sleeve (4) is pushed and made to clamp the at least two claws, and the at least two claws are closed above the convex platform of the mouth of the water inlet (12) of the railway passenger car, and hold the water inlet (12) of the railway passenger car; then the connecting sleeve (7) is rotated in the positive direction to make the upper threaded sleeve (6) and the lower threaded sleeve (8) move toward each other, and the lower threaded sleeve (8) is driven by the electromagnet (9) The guide tube moves upward, and the upper threaded sleeve (6) drives the claw (2) to move downward. With the help of the thrust action of the boss along the railway carriage water inlet (12) on the claw (2), the water supply quick connector is tightly connected to the railway carriage water inlet (12). After the water supply operation is completed, the electromagnet (9) loses power and loses its magnetic force, and the electromagnet (9) is separated from the lower threaded sleeve (8). Under the action of gravity, the guide tube (3) is separated from the railway carriage water inlet (12) and drives the sliding sleeve (4) to move. The sliding sleeve releases the restraint on the claw (2), and the water supply quick connector automatically separates from the railway carriage water inlet.

2. The railway passenger car water supply quick connector according to claim 1, characterized in that: A wedge block (14) is provided in the sliding sleeve (4) and corresponds to each of the clamping claws (2). The side of each wedge block facing the clamping claw (2) is tilted from top to bottom and from outside to inside.

3. The railway passenger car water supply quick connector according to claim 2, characterized in that: A mounting groove is provided on one side of each wedge block (14) connected to the sliding sleeve, and a plurality of mounting bosses corresponding one-to-one to the plurality of mounting grooves are provided on the inner side of the sliding sleeve (4).

4. The railway passenger car water supply quick connector according to claim 1, characterized in that: The lower part of the guide joint (13) is sleeved on the outer side of the upper part of the guide tube; the inner side of the upper part of the guide joint (13) is provided with a guide hole which is wider at the top and narrower at the bottom; the diameter of the lower end of the guide hole is larger than the outer diameter of the guide tube; the inner side of the upper part of the guide joint (13) and the lower end of the guide hole are further provided with a sealing gasket mounting ring groove; the end surface of the guide tube (3) used for docking with the water injection port (12) of the railway passenger car is provided with a sealing gasket (1); the outer peripheral side of the sealing gasket is inserted into the sealing gasket mounting ring groove.

5. The railway passenger car water supply quick connector according to claim 1, characterized in that: The lower end of the lower threaded sleeve (8) is also provided with a guard plate, and an annular mounting cavity (a) is formed between the guard plate and the guide tube (3), and the upper end of the electromagnet (9) and the connecting pipe is arranged in the annular mounting cavity.

6. The railway passenger car water supply quick connector according to claim 1, characterized in that: The inner wall cross section of the guide tube (3) is circular, and the outer wall cross section is polygonal.

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