CN106477505B - A kind of automobile-used dynamic fuelling coupling - Google Patents

Abstract

The invention relates to a dynamic refueling joint for vehicles, which includes an oil supply unit and an oil receiving unit, and the oil supply unit and the oil receiving unit are socketed; the oil supply joint and the oil receiving Dynamic docking, at the same time, through the design of the slider and the separation finger structure, the rigid connection can be ensured while the separation finger can be elastically reset, so that the relative movement between the fuel nozzle and the fuel nozzle hand clip can meet the ground fluctuation caused by dynamic refueling. The change of the relative position buffers the impact of the force at the same time, ensuring that the dynamic refueling is carried out normally. In addition, the crank rod is tightly held by the lining to hold the fuel nozzle shell tightly to ensure the stability of the connection between the refueling unit and the refueling unit during the refueling process. The oil unit and the oil receiving unit are accurately docked to realize dynamic refueling of vehicles on the ground, and the sealing performance is good during refueling, and the refueling time is fast, which is suitable for dynamic refueling of combat vehicles or ordinary vehicles.

Description

A dynamic refueling joint for vehicles

technical field

The invention relates to a dynamic refueling joint for vehicles, which is mainly used for dynamic refueling of ground combat vehicles and belongs to the technical field of research on dynamic refueling equipment for vehicles.

technical background

At present, dynamic refueling joints are widely used in combat aircraft. After one aerial refueling, the combat radius of bombers can be increased by 30%, and that of fighter jets can be increased by 40%. If multiple air refueling is implemented, combat aircraft capable of receiving refueling can completely "global reach, global operations." It mainly has two forms: one is the hose cone type, and the other is the hard tube type.

The battlefield situation is changing rapidly, and the stationary combat vehicles will become the enemy's living target. Therefore, the movement has greatly improved the survivability of combat vehicles, improved the combat effectiveness of combat vehicles, and won the initiative in the war. The application of dynamic refueling joints on combat vehicles, on the one hand, improves the survivability of combat vehicles and improves the speed and suddenness of warfare. The fuel tank volume of large military vehicles is relatively large, and the refueling time is relatively long, and there is no relevant technology for applying dynamic refueling systems to ground combat vehicles.

The activity space of aircraft is three-dimensional, while the activity space of ground combat vehicles is relatively two-dimensional, so its activity space is small, and the difficulty of dynamic refueling is higher than that of aircraft. At the same time, ground combat vehicles cannot be used because their movement speed is not as high as that of aircraft Hose refueling. Therefore, it is imminent to develop a dynamic refueling joint suitable for ground combat vehicles.

Contents of the invention

The object of the present invention is to provide a dynamic refueling joint for vehicles, which is suitable for dynamic refueling of ground vehicles, can buffer the impact caused by ground undulations, has accurate docking, and has a high degree of freedom in docking.

In order to achieve the above object, the technical solution adopted by the present invention is that the vehicle dynamic refueling joint includes an oil supply unit and an oil receiving unit, and the oil supply unit and the oil receiving unit are socketed; wherein:

The oil supply unit is composed of an outer slider, an inner slider, a shock-absorbing spring, a nozzle grip, a nozzle and a central hose; Sliding along the outer sliding sleeve, the shock-absorbing spring is set on the outer wall of the inner sliding cylinder. The hand clip of the oil nozzle is spliced by the expansion tube and the convergence tube, and the diameter of the outlet end of the convergence section is larger than the diameter of the inlet end of the expansion section. The inlet end of the expansion section of the nozzle hand clip is socketed with the end of the inner sliding cylinder, and the outlet end of the convergent section is snapped into place with the fuel nozzle. The central hose of the nozzle extends along the central axis of the nozzle to the end of the nozzle;

The oil receiving unit is composed of an inner oil nozzle, an outer oil nozzle, a support cylinder, a ball valve, an insert rod, a tight crank rod and a hydraulic cylinder. The inner oil nozzle is trumpet-shaped and can be socketed with the oil nozzle of the oil filling joint. Make the oil nozzle extend to the throat of the inner oil nozzle, and the outlet of the throat of the inner layer oil nozzle is connected with the support cylinder. The middle section of the inner cavity of the support cylinder is provided with a partition to isolate the two ends of the support cylinder. There is a ball valve at the port connected to the throat of the layer oil nozzle. The return spring of the ball valve is connected with the partition. A fuel outlet is processed on the side wall opposite to the ball valve, and a strip is processed in the middle of the side wall of the support cylinder on the other side of the partition. In the strip-shaped hole, an insertion rod is arranged. The insertion rod extends to the outside of the support cylinder along the radial direction of the support cylinder. A hydraulic cylinder is arranged at the port of the support cylinder. The piston rod of the hydraulic cylinder extends along the central axis of the support cylinder. Extending into the support tube, the end of the piston rod is connected with the end of the plunger rod, the outer wall of the inner oil nozzle is set with the outer layer oil nozzle with the same structure, and a pin bearing is arranged on the outer wall of the throat of the outer layer oil nozzle. The tight-holding curved rod is installed on the pin shaft support through the pin shaft and can be tilted up and down with the pin shaft support as the fulcrum. One end of the fastening curved rod is bent and can be clamped on the outer wall of the fuel nozzle, and the other end is processed on the side wall. The chute is connected with the insertion rod through the pin shaft installed in the chute and can move along the chute, and the insertion rod is driven to slide in the strip hole by the movement of the piston rod, and the crank rod is held tightly with the pin support as the fulcrum Pitch.

The inner wall of the inner oil nozzle is processed with a protrusion matching the annular groove on the outer wall of the oil nozzle along the circumferential direction.

The inlet end of the above fuel nozzle expands, the outlet end converges, and the diameter of the inlet end is larger than the diameter of the outlet end. Ribs are provided on the inner wall at positions corresponding to the grooves.

Strip holes and strip grooves are respectively processed on the side walls of the converging section of the oil nozzle hand clip and the expansion section of the oil nozzle. To connect, an outward edge is processed on the port where the fuel nozzle extends into the fuel nozzle hand clip, and an inner edge snapped to the outer edge of the fuel nozzle is processed at the port of the fuel nozzle hand clip.

The ratio of the diameter of the inlet end of the expansion section to the diameters of the outlet end of the expansion section and the outlet end of the convergence section of the oil nozzle grip is 1:2:1.5˜1:3:1.8.

The above-mentioned clamping crank rods are multiple evenly distributed on the outside of the outer nozzle. The clamping crank rods include a long arm and a short arm. The angle between the long arm and the short arm is 100-170°. At the end of the long arm, there is a The grappling hook extending radially along the outer oil nozzle is provided with a lining matching the outer wall of the oil nozzle at the end of the grappling hook, and the chute is processed on the short arm.

The above-mentioned inner oil nipple is made of elastic material, and the elastic modulus of the elastic material is 1-10 MPa.

The dynamic refueling joint for vehicles provided by the present invention is designed to be a trumpet-shaped oil supply joint and oil receiving joint, which is convenient for dynamic docking. At the same time, the design of the sliding cylinder and the separation finger structure ensures its rigid connection. The finger can be separated to ensure elastic reset, so that the fuel nozzle and the fuel nozzle hand clip can move relative to each other, which can meet the relative position change caused by the ground fluctuation during dynamic refueling, and at the same time buffer the impact of force to ensure the normal progress of dynamic refueling. In addition, hold the curved rod tightly The casing of the fuel nozzle is tightly held by the lining to ensure the stability of the connection between the oil supply unit and the oil receiver unit during the refueling process. The invention can ensure the accurate docking of the oil supply unit and the oil receiver unit, realize the dynamic refueling of vehicles on the ground, and seal when refueling Good performance, fast refueling time, suitable for dynamic refueling of combat vehicles or ordinary vehicles.

Description of drawings

Fig. 1 is a schematic structural view of a refueling joint according to Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of the oil supply unit 1 in FIG. 1 .

FIG. 3 is a structural schematic diagram of the oil nozzle 1-5 in FIG. 2 .

FIG. 4 is a schematic structural diagram of the oil receiving unit 2 in FIG. 1 .

Fig. 5 is a structural schematic diagram of the tight-holding curved rod 2-5 in Fig. 4 .

Detailed ways

The technical solutions of the present invention will now be further described in conjunction with the drawings and embodiments, but the present invention is not limited to the following implementation situations.

Example 1

It can be seen from FIG. 1 that the vehicle dynamic refueling joint of this embodiment is composed of a refueling unit 1 and an oil receiving unit 2 that are socketed and combined.

Wherein: referring to Fig. 2, the oil supply unit 1 of the present embodiment is composed of an outer sliding cylinder 1-1, a damping spring 1-3, an inner sliding cylinder 1-2, a fuel nozzle hand clip 1-4, and a fuel nozzle 1-5 , ribs 1-7, and central hose 1-6; the outer slider 1-1 is a casing structure, and a strip-shaped slot is processed on its side wall, and the inner slider 1-2 is set on the outer slider 1-1 inner cavity, set coaxially, and can slide along the central axis of the outer slider 1-1, the end of the inner slider 1-2 is processed with claws, which extend to the slot of the outer slider 1-1 The inner jaws are engaged with the outer sliding cylinder 1-1 to ensure that it can slide in the outer sliding cylinder 1-1 but will not slip off. The outer wall of the inner sliding cylinder 1-2 is equipped with a shock absorbing spring 1-3. When impacted by uneven road surface, the inner sliding cylinder 1-2 and the outer sliding cylinder 1-1 slide axially, and the damping spring 1-3 can absorb part of the impact force to reduce the impact on the entire system and avoid excessive force and damage components. The other end of the inner sliding cylinder 1-2 is also sleeved with a fuel nozzle hand clip 1-4. The structure of the fuel nozzle hand clip 1-4 is: it is formed by splicing an expanding tube and a convergent tube, and its middle diameter is larger than The diameter of both ends, the diameter of the end port connected to the inner sliding cylinder 1-2 is 50mm, the diameter of the outlet of the expansion section is 100mm, which is equal to the diameter of the entrance of the convergence section, the diameter of the exit of the convergence section is 75mm, and the entrance of the expansion section is the one end with a smaller diameter. On the inner sliding tube 1-2, it can be clamped with the end of the inner sliding tube 1-2 to prevent it from slipping. The outlet of the convergent section, that is, the end with a larger diameter, is clamped with the oil nozzle 1-5, and the oil nozzle is clamped The fuel inlet a is processed on the side wall of 1-4. In order to ensure smooth fuel delivery, the fuel inlet a is set obliquely. The outer side of the fuel inlet a communicates with the fuel tank of the refueling vehicle through the fuel pipe, and the inner side of the fuel inlet a communicates with the central hose 1-6, and the central hose 1-6 extends to the fuel nozzle 1 along the central axis of the fuel nozzle hand clamp 1-4 -5 exit. Referring to Fig. 3, the inlet end of the oil nozzle 1-5 in this embodiment expands and the outlet end converges, and the diameter of the inlet end is larger than the diameter of the outlet end, and the outlet end is processed into a sawtooth shape to facilitate oil leakage and ensure that the central hose 1-6 The fuel is discharged smoothly through the gap of the serrated outlet. Two annular grooves are processed along the circumferential direction on the outer wall of the fuel nozzle 1-5, and ribs 1-7 are arranged on the inner wall corresponding to the annular grooves. , to strengthen the structural strength of the pipe wall of the oil nozzle 1-5.

In order to ensure that the oil nozzle hand clip 1-4 and the oil nozzle 1-5 can maintain a rigid connection and maintain a certain degree of elasticity during the sliding process, the outlet end of the oil nozzle hand clip 1-4 of the present embodiment and the oil nozzle 1-5 The inlet end of 5 is processed with strip-shaped grooves and strip-shaped holes on the side wall of the convergent section of the oil nozzle hand clip 1-4 and the side wall of the expansion section of the oil nozzle 1-5, and the strip-shaped groove and the strip-shaped hole are spaced apart Distribution, 3 strip holes as a group, there is an open strip groove between each adjacent two groups of strip holes, so that the strip groove and strip holes are evenly distributed on the side wall of the fuel nozzle hand clip 1-4 , forming a separate finger structure, which increases the elasticity of the oil nozzle hand clip 1-4 and the oil nozzle 1-5. When the road surface is uneven and has a large impact, the oil nozzle hand clip 1-4 and the oil nozzle 1-5 slide between the oil nozzle 1-5. The separation fingers of the mouth grip 1-4 are opened to apply force to the central axis of the oil nozzle 1-5, and the separation fingers of the oil nozzle 1-5 are reset and popped out along the radial direction to buffer the impact and ensure a rigid connection at the same time. In order to prevent it from slipping off, an inner edge is processed on the outlet end of the fuel nozzle hand clip 1-4, and an outer edge is also processed on the inlet end of the oil nozzle 1-5 accordingly, and the outer edge is clamped with the inner edge to ensure The fuel nozzle 1-5 is clamped with the fuel nozzle hand clip 1-4 under normal conditions, so that the entire fuel connector is rigidly connected.

The oil receiving unit 2 of this embodiment is socketed with the oil supply unit 1. As can be seen from FIG. 2-8, ball valve 2-3, inserting rod 2-6, hold tight crank rod 2-5 and hydraulic cylinder 2-7 combination, the inner layer oil nozzle 2-1 of the present embodiment is trumpet shape, and with oil nozzle 1- 5, the inner layer nozzle 2-1 is made of rubber material and has elasticity to ensure that it is not easy to slip off when it is docked with the oil nozzle 1-5. There are two inner layer nozzles 2-1. The annular protrusion coincides with the annular groove on the outer wall of the oil nozzle 1-5, and the throat outlet of the inner oil nozzle 2-1 is connected with a support tube 2-4, and the middle section of the inner cavity of the support tube 2-4 is provided with a partition The plate 2-8 separates the two ends of the support cylinder 2-4, and the side connected to the inner oil nozzle 2-1 is the oil injection cavity, and the other side is the sliding cavity, and a ball valve is installed at the entrance of the oil injection cavity 2-3, the ball plug of the ball valve 2-3 is set at the entrance of the oil injection chamber, that is, at the port communicating with the throat of the inner oil nozzle 2-1, one end of the return spring of the ball valve 2-3 is connected with the ball plug, and the other end It is connected with the partition 2-8, and a fuel outlet b is processed on the side wall of the oil injection chamber close to the partition 2-8, which can prevent the ball plug from blocking the fuel outlet b after the return spring is compressed by the ball plug, so as to ensure smooth refueling. When the inner oil nozzle 2-1 enters the oil, the ball plug is under pressure, the return spring contracts, the hydraulic oil enters the oil injection cavity, and is discharged from the oil outlet. At the entrance of the oil injection cavity, ensure that the cavity is closed. A strip-shaped hole is processed on the side wall of the sliding cavity side of the support cylinder 2-4, and the port is connected with the cylinder barrel of the hydraulic cylinder 2-7, and the piston rod of the hydraulic cylinder 2-7 moves along the support cylinder 2- The central axis of 4 extends into the sliding cavity of the support cylinder 2-4. An outer oil nozzle 2-2 is installed on the outer side of the inner layer oil nozzle 2-1. The outer layer oil nozzle 2-2 is made of stainless steel, and a pin bearing is welded on the outer wall of the throat of the outer layer oil nozzle 2-2. Hold tight crank bar 2-5 and be installed on the pin bearing by bearing pin, and can be that bearing pin is fulcrum and do pitching motion.

There are 8 clamping curved rods 2-5 in this embodiment, which are evenly distributed on the outer wall of the outer oil nozzle 2-2, as shown in Fig. 5, which includes a long arm 2-5-2 and a short arm 2-5-1. An included angle of 150° is formed between the arm 2-5-2 and the short arm 2-5-1, and the end of the long arm 2-5-2 is processed with a grapple 2- 5-3, at the end of the grapple hook 2-5-3, a lining 2-5-4 matching the outer wall of the oil nozzle 1-5 is provided, and a strip chute is processed on the side of the short arm 2-5-1, The clamping curved rod 2-5 is connected with the insertion rod 2-6 through the pin shaft which is installed in the chute and can move along the chute, and the insertion rod 2-6 passes along the radial direction of the support cylinder 2-4 The strip groove on the side wall of the support cylinder 2-4 extends into the sliding cavity of the support cylinder 2-4 and is connected with the piston rod of the hydraulic cylinder 2-7, and the piston rod telescopically pushes the insertion rod 2-6 into the chute Move to make the tight crank bar 2-5 tilt with the pin bearing as the fulcrum, thereby controlling the grabbing hook 2-5-3 to clamp or loosen the oil nozzle 1-5.

When docking, the oil supply unit 1 is socketed with the oil receiving unit 2, the oil nozzle 1-5 extends to the inner cavity of the inner layer oil nozzle 2-1, and is socketed with the inner layer oil nozzle 2-1, and the hydraulic cylinder 2-7 piston rod Shrink and push the insertion rod 2-6 to slide in the chute, hold the curved rod 2-5 to tilt with the pin shaft support as the fulcrum, press down the grabbing hook 2-5-3, and press the oil nozzle 1-5 of the oil supply joint Apply a force perpendicular to the central axis to further ensure the rigid connection between the oil supply unit 1 and the oil receiving unit 2. When the oil nozzle 1-5 and the oil nozzle hand clip 1-4 are completely separated due to other reasons during the refueling process of the system, due to the center The flexible pipes 1-6 are connected, so it is ensured that no oil leakage will occur when the refueling joint is disconnected from the oil receiving joint.

Example 2

In the oil supply unit 1 of this embodiment, the structure of the oil nozzle hand clip 1-4 is: it is spliced by an expanding tube and a convergent tube, the diameter of the middle part is larger than the diameter of both ends, and it is connected with the inner sliding cylinder 1-2. The diameter of the port at one end is 80mm, the diameter of the outlet of the expansion section is 200mm, which is equal to the diameter of the entrance of the convergence section, and the diameter of the exit of the convergence section is 128mm, that is, the diameter of the inlet end of the expansion section of the nozzle grip 1-4 is the same as the diameter of the outlet end of the expansion section and the outlet end of the convergence section. The diameter ratio is 1:2.5:1.6. In order to ensure smooth oil delivery, the angle between the central axis of the fuel inlet a and the central axis of the fuel nozzle grip 1-4 is 150°, and the inlet of the fuel nozzle 1-5 The outlet end expands, the outlet end converges, and the diameter of the inlet end is larger than that of the outlet end. The outlet end is processed into a serrated shape to facilitate oil leakage and ensure that the fuel in the central hose 1-6 is smoothly discharged through the gap of the serrated outlet. An annular groove is processed along the circumferential direction on the outer wall of 1-5, and a rib 1-7 is provided on the inner wall corresponding to the annular groove to strengthen the structural strength of the pipe wall of the oil nozzle 1-5. The outlet end of the oil nozzle hand clip 1-4 and the inlet end of the oil nozzle 1-5 are all processed with strips on the side wall of the convergent section of the oil nozzle hand clip 1-4 and the expansion section side wall of the oil nozzle 1-5. slots and bar-shaped holes, and the bar-shaped slots and bar-shaped holes are distributed at intervals, 4 bar-shaped holes form a group, and there is an open bar-shaped slot between each two adjacent groups of bar-shaped holes, so that the bar-shaped groove and the bar The shaped holes are evenly distributed on the side wall of the oil nozzle hand clip 1-4, forming a separate finger structure, which increases the elasticity of the oil nozzle hand clip 1-4 and the oil nozzle 1-5, and at the outlet end of the oil nozzle hand clip 1-4 Inner ribs are processed on the top, and correspondingly, outer ribs are also processed at the inlet ends of the oil nozzles 1-5.

In the oil receiving unit 2 of this embodiment, the inner layer oil nozzle 2-1 is made of high-quality rubber material, and an annular protrusion is processed on the inner wall of the inner layer oil nozzle 2-1, which is connected with the annular protrusion on the outer wall of the oil nozzle 1-5. The grooves match, and there are 4 tight curved rods 2-5, which are evenly distributed on the outer wall of the outer oil nozzle 2-2, and a 170° clip is formed between the long arm 2-5-2 and the short arm 2-5-1. The end of the long arm 2-5-2 is processed with a grappling hook 2-5-3 extending radially along the outer oil nozzle 2-2, and the end of the grappling hook 2-5-3 is provided with 5. The lining 2-5-4 matched with the outer wall is processed with a bar-shaped chute on the side of the short arm 2-5-1, so that the embracing curved rod 2-5 can be installed in the chute and move along the chute The pin shaft is connected with the insertion rod 2-6, and the insertion rod 2-6 passes through the strip groove on the side wall of the support cylinder 2-4 along the radial direction of the support cylinder 2-4 and extends to the slide of the support cylinder 2-4. The cavity is connected with the piston rod of the hydraulic cylinder 2-7, and the piston rod telescopically pushes the insertion rod 2-6 to move in the chute, so that the holding crank rod 2-5 tilts with the pin bearing as the fulcrum, thereby controlling The grapple 2-5-3 clamps the fuel nozzle 1-5 or loosens it.

Other components and their connections are the same as those in Embodiment 1.

Example 3

In the oil supply unit 1 of this embodiment, the structure of the oil nozzle hand clip 1-4 is: it is spliced by an expanding tube and a convergent tube, the diameter of the middle part is larger than the diameter of both ends, and it is connected with the inner sliding cylinder 1-2. The diameter of the port at one end is 60mm, the diameter of the outlet of the expansion section is 180mm, which is equal to the diameter of the entrance of the convergence section, and the diameter of the exit of the convergence section is 108mm, that is, the diameter of the inlet end of the expansion section of the nozzle grip 1-4 is the same as the diameter of the outlet end of the expansion section and the outlet end of the convergence section. The diameter ratio is 1:3:1.8. In order to ensure smooth oil delivery, the angle between the central axis of the fuel inlet a and the central axis of the fuel nozzle hand clamp 1-4 is 120°, and the inlet of the fuel nozzle 1-5 The outlet end expands, the outlet end converges, and the diameter of the inlet end is larger than that of the outlet end. The outlet end is processed into a serrated shape to facilitate oil leakage and ensure that the fuel in the central hose 1-6 is smoothly discharged through the gap of the serrated outlet. Two annular grooves are processed along the circumferential direction on the outer wall of 1-5, and ribs 1-7 are provided on the inner wall corresponding to the annular grooves to strengthen the structural strength of the pipe wall of the oil nozzle 1-5. The outlet end of the oil nozzle hand clip 1-4 and the inlet end of the oil nozzle 1-5 are all processed with strips on the side wall of the convergent section of the oil nozzle hand clip 1-4 and the expansion section side wall of the oil nozzle 1-5. slots and strip holes, and the strip slots and strip holes are distributed at intervals, two strip holes form a group, and there is an open strip slot between each two adjacent groups of strip holes, so that the strip slot and the strip The shaped holes are evenly distributed on the side wall of the oil nozzle hand clip 1-4, forming a separate finger structure, which increases the elasticity of the oil nozzle hand clip 1-4 and the oil nozzle 1-5, and at the outlet end of the oil nozzle hand clip 1-4 Inner ribs are processed on the top, and correspondingly, outer ribs are also processed at the inlet ends of the oil nozzles 1-5.

In the oil receiving unit 2 of this embodiment, the inner layer oil nozzle 2-1 is made of plastic with an elastic modulus greater than 5MPa and less than 10MPa, and two annular protrusions are processed on the inner wall of the inner layer oil nozzle 2-1, which are compatible with oiling. The annular grooves on the outer wall of the nozzle 1-5 coincide, and there are 6 tight curved rods 2-5, which are evenly distributed on the outer wall of the outer oil nozzle 2-2. The long arm 2-5-2 and the short arm 2-5-1 An included angle of 100° is formed between them, and the end of the long arm 2-5-2 is processed with a grapple 2-5-3 radially extending along the outer oil nozzle 2-2, and at the end of the grapple 2-5-3 A hugging liner 2-5-4 matching the outer wall of the oil nozzle 1-5 is provided, and a bar-shaped chute is processed on the side of the short arm 2-5-1, so that the clinging curved rod 2-5 is installed in the chute And the pin shaft that can move along the chute is connected with the plunger 2-6, and the plunger 2-6 is along the radial direction of the support cylinder 2-4 through the strip groove on the side wall of the support cylinder 2-4 and extends to The sliding cavity of the support cylinder 2-4 is connected with the piston rod of the hydraulic cylinder 2-7, and the piston rod stretches and pushes the insertion rod 2-6 to move in the chute, so that the clamping crank rod 2-5 is supported by the pin shaft. The seat is tilted as a fulcrum, so as to control the grabbing hook 2-5-3 to clamp the oil nozzle 1-5 or loosen it.

Other components and their connections are the same as those in Embodiment 1.

The inner oil nozzle 2-1 in the above embodiment can also be made of other high-elastic materials with an elastic modulus between 1 and 10 MPa, and the diameter of the inlet end of the expansion section of the oil nozzle hand clip 1-4 is the same as that of the outlet end of the expansion section. And the diameter ratio of the outlet end of the convergent section can be adjusted arbitrarily within the range of 1:2:1.5～1:3:1.8 to ensure its structural strength.

The connection methods and materials not described in detail in the above embodiments belong to conventional technologies, and those skilled in the art can know them based on the contents of the above embodiments and drawings in combination with conventional basic knowledge, so they are not described in detail one by one.

Claims (7)

1. A dynamic refueling joint for a vehicle, characterized in that it comprises an oil supply unit (1) and an oil receiving unit (2), and the oil supply unit (1) and the oil receiving unit (2) are socketed; wherein: The oil supply unit (1) is composed of an outer sliding cylinder (1-1), an inner sliding cylinder (1-2), a damping spring (1-3), an oil nozzle hand clip (1-4), an oil nozzle (1- 5) and the central hose (1-6); the inner slider (1-2) is set in the inner cavity of the outer slider (1-1) and the end is clamped with the outer slider (1-1), along The outer sliding cylinder (1-1) slides, the shock absorbing spring (1-3) is set on the outer wall of the inner sliding cylinder (1-2), and the fuel nozzle hand clip (1-4) is spliced by an expanding tube and a converging tube and the diameter of the outlet end of the convergent section is larger than the diameter of the inlet end of the expansion section. The nozzle (1-5) is clamped, and the fuel inlet (a) connected with the fuel pipe is processed on the side wall of the fuel nozzle hand clip (1-4), and the central hose (1) connected to the fuel inlet (a) -6) extending along the central axis of the filler nozzle (1-5) to the end of the filler nozzle (1-5); The oil receiving unit (2) is composed of an inner layer oil nozzle (2-1), an outer layer oil nozzle (2-2), a support cylinder (2-4), a ball valve (2-3), an insert rod (2-6), a holding Composed of a tight crank rod (2-5) and a hydraulic cylinder (2-7), the inner oil nipple (2-1) is trumpet-shaped, and can be socketed with the oil nipple (1-5) of the refueling joint, so that the refueling The nozzle (1-5) extends to the throat of the inner oil nozzle (2-1), and the outlet of the throat of the inner layer oil nozzle (2-1) communicates with the support cylinder (2-4), and the support cylinder (2-4) The middle section of the inner chamber is provided with a partition (2-8), which isolates the two ends of the support cylinder (2-4), and connects the support cylinder (2-4) with the throat of the inner oil nozzle (2-1). A ball valve (2-3) is arranged at the port, the return spring of the ball valve (2-3) is connected to the partition plate (2-8), and a fuel outlet (b) is processed on the side wall opposite to the ball valve (2-3) , a bar-shaped hole is processed in the middle part of the side wall of the support tube (2-4) on the other side of the partition (2-8), and an inserting rod (2-6) is arranged in the bar-shaped hole, and the inserting rod (2-6 ) along the radial direction of the support cylinder (2-4) to the outside of the support cylinder (2-4), a hydraulic cylinder (2-7) is arranged at the port of the support cylinder (2-4), and the hydraulic cylinder (2- 7) The piston rod extends into the support cylinder (2-4) along the central axis of the support cylinder (2-4), the end of the piston rod is connected with the end of the insertion rod (2-6), and the inner oil nozzle ( The outer wall of 2-1) is equipped with an outer oil nipple (2-2) with the same structure, and a pin bearing is arranged on the outer wall of the throat of the outer oil nipple (2-2), and the curved rod (2-5) is tightly held. ) is installed on the pin shaft support through the pin shaft and can be tilted up and down with the pin shaft support as the fulcrum, and one end of the curved rod (2-5) is held tightly to bend and can be clamped on the outer wall of the oil nozzle (1-5). A chute is processed on the side wall of the other end, and the pin shaft installed in the chute and movable along the chute is connected with the insertion rod (2-6), and the movement of the piston rod drives the insertion rod (2-6) on the bar. Sliding in the shape hole, affects and holds the curved bar (2-5) and pitches with pin bearing as fulcrum. 2. The vehicle dynamic refueling joint according to claim 1, characterized in that: the inner wall of the inner layer nozzle (2-1) is processed along the circumferential direction with an annular groove on the outer wall of the fuel nozzle (1-5) Anastomotic bumps. 3. The vehicle dynamic refueling joint according to claim 1 or 2, characterized in that: the inlet end of the fuel nozzle (1-5) expands, the outlet end converges, and the diameter of the inlet end is larger than the diameter of the outlet end, and the overall shape is conical Shaped pipe, its outlet is processed into a sawtooth shape, grooves are processed along the circumferential direction on the outer wall of the oil nozzle (1-5), and ribs (1-7) are arranged on the inner wall at positions corresponding to the grooves. 4. The vehicle dynamic refueling joint according to claim 3, characterized in that: the side walls of the converging section of the refueling nipple (1-4) and the expansion section of the refueling nipple (1-5) are respectively processed with strips The shaped hole and the bar-shaped groove are in the structure of separate fingers, and the bar-shaped hole and the bar-shaped groove are distributed at intervals, so that the oil nozzle hand clip (1-4) is elastically connected with the oil nozzle (1-5), and the oil nozzle (1-5) The port that extends into the oil nozzle hand clip (1-4) is processed with an outward edge, and the port of the oil nozzle hand clip (1-4) is processed with an outer edge clip with the oil nozzle (1-5) Connected inner edge. 5. The vehicle dynamic refueling joint according to claim 4, characterized in that: the ratio of the diameter of the inlet end of the expansion section of the fuel nozzle hand grip (1-5) to the diameter of the outlet end of the expansion section and the diameter of the outlet end of the convergence section is 1:2:1.5～1:3:1.8. 6. The vehicle dynamic refueling joint according to claim 1, characterized in that: the clamping curved rods (2-5) are a plurality of evenly distributed outside the outer nozzle (2-2), and the clamping curved rods (2-5) includes long arm (2-5-2) and short arm (2-5-1), forming 100～ The included angle of 170°, the end of the long arm (2-5-2) is provided with a grapple (2-5-3) extending radially along the outer nozzle (2-2), on the grapple (2- The end of 5-3) is provided with a lining (2-5-4) matching with the outer wall of the oil nozzle (1-5), and the chute is processed on the short arm (2-5-1). 7. The vehicle dynamic refueling joint according to claim 1, characterized in that: the inner oil nipple (2-1) is made of elastic material, and the elastic modulus of the elastic material is 1-10 MPa.