A differential controller and multi-position power-assisted liquid-filling gun

Abstract

The present invention discloses a differential controller and a multi-position power-assisted liquid-adding gun, which includes a double-control differential controller, a double-acting cylinder provided on the liquid-adding gun, a first piston and a second piston provided in the double-acting cylinder, a first air inlet provided on the side of the double-acting cylinder close to the first piston, a second air inlet provided on the side of the double-acting cylinder close to the second piston, a third air inlet provided between the piston and the second piston, the first air inlet, the second air inlet and the third air inlet respectively connected to the air outlet channel on the differential controller body; the piston is connected to a curved liquid-adding gun head mechanism, and a locking claw mechanism is connected to the curved liquid-adding gun head mechanism. The purpose is to control the different forms of the double-acting cylinder through the differential controller, so that the liquid-adding gun has three different states of gas-adding / locking claw / opening claw that are independent of each other.

Description

Technical Field

[0001] The invention relates to the field of liquefied natural gas filling equipment, and in particular to a multi-position power-assisted liquid filling gun. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] At an LNG filling station, filling is the most important link and also reflects the technical level of the entire station. Existing filling guns are usually manually pushed forward or rotated forward so that the filling gun nozzle is connected to the filling port on the LNG vehicle. After the filling is completed, the filling gun nozzle is manually withdrawn.

[0004] Therefore, the existing problems of the liquid filling gun are as follows: 1. An angle liquid inlet method is usually adopted, that is, the liquid inlet pipe is bent at 90 degrees, and the medium flows into the liquid filling gun at a right angle. This liquid inlet method has a large resistance to the liquid, which affects the flow rate of the liquid; 2. The liquid filling and locking claw methods of the existing liquid filling gun are usually manual, and the operator is required to add liquid by turning the operating lever. However, in general gas filling stations, most of the operators are female workers, and they often cannot lift or turn the lever; and if the gas filling operation lasts for a long time, the physical requirements for the operator are also high; 3. Although the existing liquid filling gun is also controlled by a double-acting cylinder, the control method is complicated and the structure of the controller is relatively complicated, which makes the manufacturing cost high. Summary of the invention

[0005] The purpose of the present invention is to control different working states of a double-acting cylinder through a differential controller, thereby realizing the operation of adding gas / locking claw / opening claw of a liquid filling gun, and realizing the transformation of the liquid filling gun from a manual mode to a pneumatic mode; changing the existing angle type operation to a curved type operation, so that the pipe wall of the liquid flow is smoother and the resistance to the liquid flow is reduced; through the connection between the locking claw mechanism and the liquid filling gun head, the locking claw mechanism is driven to move forward and backward while the liquid filling gun head is in motion, so as to realize locking claw / opening claw, simplify the structure, and make the control simpler.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A differential controller, wherein two parallel through holes are provided in a controller body, a first multi-way valve core and a second multi-way valve core are slidably provided in the through holes respectively, the first multi-way valve core and the second multi-way valve core are staggered, the first multi-way valve core and the second multi-way valve core are connected together by a control rod, and the other end of the control rod extends out of the outside of the controller body; an air inlet is provided on the controller body, the air inlet is connected to the two parallel through holes respectively through air passages, and a plurality of air outlet channels are provided on the controller body; through the sliding of the control rod, different air outlet channels are connected to the air inlet via the first multi-way valve core and / or the second multi-way valve core.

[0008] Preferably, a plurality of air-isolating O-rings in contact with the inner wall of the through hole are respectively arranged on the first multi-way valve core and the second multi-way valve core, an air inlet channel is formed between two adjacent air-isolating O-rings, and the air-isolating O-rings on the first multi-way valve core and the air-isolating O-rings on the second multi-way valve core are staggered.

[0009] Preferably, six air inlet channels are arranged on the first multi-way valve core, and five air inlet channels are arranged on the second multi-way valve core; a baffle is slidably connected to the position on the control rod that contacts the controller body, and the baffle is fixedly connected to the controller body.

[0010] A multi-position power-assisted liquid filling gun, the liquid filling gun is provided with a double-acting cylinder, a first piston and a second piston are provided in the double-acting cylinder, a first air inlet is provided on the side of the double-acting cylinder close to the first piston, a second air inlet is provided on the side of the double-acting cylinder close to the second piston, a third air inlet is provided between the first piston and the second piston, the first air inlet, the second air inlet and the third air inlet are respectively connected to the air outlet channel on the controller body; the first piston is connected to a curved liquid filling gun head mechanism, and a locking claw mechanism is connected to the curved liquid filling gun head mechanism.

[0011] Preferably, the curved liquid-filling gun head mechanism comprises a liquid-filling gun nozzle assembly, and the liquid-filling gun nozzle assembly is connected to the liquid inlet pipe by a curved pipe, and the center of the curved pipe is close to the direction of liquid flow during liquid filling.

[0012] Preferably, the liquid filling gun nozzle assembly includes a one-way valve core, the one-way valve core is slidably connected to a liquid filling sleeve on the outside, the liquid filling sleeve is sleeved on the outside of the liquid filling tube and sealed with the liquid filling tube, and the liquid filling tube and the liquid inlet pipe are connected by a bent pipe; a first spring is sleeved on the outside of the liquid filling tube, one end of the first spring is in contact with the step surface on the outside of the liquid filling tube, and the other end is in contact with the one-way valve core.

[0013] Preferably, the liquid filling sleeve is connected to the transition pipe, the transition pipe is connected to the piston, and the liquid filling pipe is arranged in the transition pipe; the transition pipe is connected to the sliding sleeve by a fixing bolt, a gun head is arranged between the transition pipe and the sliding sleeve, and there is relative movement between the sliding sleeve and the gun head; a plurality of claw holes are arranged on the side wall of the gun head, each of the claw holes is rotatably connected to a claw, and the hook portion of the claw cooperates with the liquid filling port of the vehicle; the sliding sleeve is arranged on the outside of the claw, and the claw realizes opening / locking of the claw by sliding of the sliding sleeve.

[0014] Preferably, the other end of the claw is connected to the gun head through a second spring, a groove is provided at the middle position of the side where the claw contacts the sliding sleeve, a flange is provided on the end of the claw close to the spring, and the flange cooperates with the inner side surface of the sliding sleeve to realize the opening / locking of the claw.

[0015] Preferably, the claw is rotatably connected to the gun head via a shaft, and the shaft protrudes from the outer surface of the claw; the shaft is arranged between the hook and the second spring, close to one end of the second spring; and the number of the claws is at least two.

[0016] Preferably, a first handle is provided on an end face of the double-acting cylinder away from the piston, and both ends of the first handle are connected to brackets, and the brackets are triangular and symmetrically connected to the end face of the double-acting cylinder; the gun head and the double-acting cylinder are connected by several reinforcing rods, and a second handle is provided on the reinforcing rod, and both ends of the second handle are connected to brackets, and the two brackets are respectively located at both ends of the reinforcing rod.

[0017] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present invention are: through the setting of the differential controller, different airways can be connected or closed when the control lever is turned, thereby realizing different working modes of the double-acting cylinder; the filling gun is set to be bent, which can reduce the resistance to liquid flow and make the liquid flow smoother during filling; through the action of the double-acting cylinder, the forward and backward movement of the filling gun head is controlled, and then the action of the locking claw mechanism is controlled, thereby realizing the linkage between the filling gun head and the locking claw mechanism, making the whole structure simpler, reducing the weight and volume of the filling gun as a whole, and being more convenient for operators to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a stereogram of a differential controller;

[0019] Figure 2 is a stereogram of the present invention;

[0020] Figure 3 is a cross-sectional view of the present invention;

[0021] Figure 4This is a partial enlarged view of the connection between the controller and the double-acting cylinder.

[0022] In the figure: 1-controller body; 2-first multi-way valve core; 3-second multi-way valve core; 4-control rod; 6-gas-isolating O-ring; 7-baffle; 8-muffler; 9-double-acting cylinder; 10-gun head; 11-sliding sleeve; 12-elbow; 13-reinforcement rod; 14-bracket; 15-second handle; 16-claw; 17-first handle; 51-first air outlet channel; 52-second air outlet channel; 53-third air outlet channel; 91-first chamber; 9 2-second chamber; 93-third chamber; 94-first air inlet; 95-third air inlet; 96-second air inlet; 97-first piston; 98-second piston; 111-fixing bolt; 112-slide rail; 121-one-way valve core; 122-first spring; 123-liquid adding pipe; 124-transition pipe; 125-liquid inlet pipe; 126-liquid adding sleeve; 161-rotating shaft; 162-second spring; 163-groove; 164-flange. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] A differential controller can be combined with a cylinder to control the movement of the cylinder. Two parallel through holes are arranged in the controller body 1. A first multi-way valve core 2 and a second multi-way valve core 3 are slidably arranged in the through holes respectively. The first multi-way valve core 2 and the second multi-way valve core 3 are staggered. It can be understood that the first multi-way valve core 2 and the second multi-way valve core 3 are staggered by the staggered arrangement, and the air inlet channel on the valve core is also staggered, thereby controlling the opening and closing of different air outlet channels.

[0026] The first multi-way valve core 2 and the second multi-way valve core 3 are connected together by a control rod 4. By toggling the control rod 4 left and right, the first multi-way valve core 2 and the second multi-way valve core 3 can be driven to move together. The other end of the control rod 4 extends out of the outside of the controller body 1 for the user to toggle left and right. The controller body 1 is provided with an air inlet (not shown in the figure), and a muffler 8 is provided next to the air inlet. The air inlet is connected to the air inlet device, and the air inlet is connected to two parallel through holes through the air channel. The controller body 1 is provided with several air outlet channels. By sliding the control rod 4, different air outlet channels are connected to the air inlet through the first multi-way valve core 2 and / or the second multi-way valve core 3. It can be understood that when the control rod 4 is in different positions, the opening and closing states of the several air outlet channels are different, so that the forward and backward movement of the piston on the cylinder is controlled by different air outlet channels.

[0027] Several air-isolating O-rings 6 in contact with the inner wall of the through hole are respectively arranged on the first multi-way valve core 2 and the second multi-way valve core 3, and an air inlet channel is formed between two adjacent air-isolating O-rings 6. When the control rod 4 is in different positions, different air inlet channels are connected to the air inlet port and are discharged through different air outlet channels, thereby achieving the purpose of controlling the cylinder; the air-isolating O-rings 6 on the first multi-way valve core 2 and the air-isolating O-rings 6 on the second multi-way valve core 3 are staggered, so that the air inlet channel on the first multi-way valve core 2 and the air inlet channel on the second multi-way valve core 3 are staggered, thereby achieving the purpose of dual control.

[0028] like Figure 1 As shown, the first multi-way valve core 2 is a two-position five-way valve, and the second multi-way valve core 3 is a two-position three-way valve. The two valve cores are staggered and offset, so as to achieve a double control effect on the cylinder; the baffle 7 is slidably connected to the position on the control rod 4 that contacts the controller body 1, and the baffle 7 is fixedly connected to the controller body 1.

[0029] Combination Figure 3-4 Taking the differential controller controlling the double-acting cylinder 9 as an example, the double-acting cylinder 9 is provided with a first piston 97 and a second piston 98, and there are three air outlet channels on the differential controller, namely, the first air outlet channel 51, the second air outlet channel 52, and the third air outlet channel 53; wherein, the first air outlet channel 51 is connected to the first chamber 91 on the double-acting cylinder 9, the second air outlet channel 52 is connected to the second chamber 92, and the third air outlet channel 53 is connected to the third chamber 93.

[0030] When the first piston 97 and the second piston 98 on the double-acting cylinder 9 are simultaneously at the leftmost position in the figure (i.e., the filling position), the second chamber 92 and the third chamber 93 are connected to the air inlet to intake air, the first chamber 91 is exhausted, and the gas is discharged into the atmosphere.

[0031] When the first piston 97 on the double-acting cylinder 9 is in the middle position and the second piston 98 is in the left position (i.e. the locking claw position), the first chamber 91 and the second chamber 92 are connected to the air inlet to intake air, and the third chamber 93 is exhausted.

[0032] When the first piston 97 and the second piston 98 on the double-acting cylinder 9 are at the rightmost position at the same time (i.e., the open claw position), the first chamber 91 is connected to the air inlet to intake air, and the second chamber 92 and the third chamber 93 are exhausted.

[0033] A multi-position booster liquid filling gun, comprising the above-mentioned differential controller, a double-acting cylinder 9 is arranged on the liquid filling gun, and the double-acting cylinder 9 is controlled by the differential controller, so as to control different states of the liquid filling gun, such as gas filling, locking claw, and opening claw. A first piston 97 and a second piston 98 are arranged in the double-acting cylinder 9, a first air inlet 94 is arranged on the side of the double-acting cylinder 9 close to the first piston 97, and the first air inlet 94 is connected to the first air outlet channel 51 on the differential controller, a second air inlet 96 is arranged on the side of the double-acting cylinder 9 close to the second piston 98, and the second air inlet 96 is connected to the third air outlet channel 53 on the differential controller, a third air inlet 95 is arranged between the first piston 97 and the second piston 98, and the third air inlet 95 is connected to the second air outlet channel 52 on the differential controller; the first piston 97 is connected to the curved liquid filling gun head mechanism, and the curved liquid filling gun head mechanism is connected to the locking claw mechanism. The forward and backward movement of the first piston 97 can drive the forward and backward movement of the curved liquid filling gun head, and can also drive the locking claw mechanism to perform the locking claw / opening claw action.

[0034] The curved liquid adding gun head mechanism includes a liquid adding gun nozzle assembly, and the liquid adding gun nozzle assembly is connected to the liquid inlet pipe 125 by a curved pipe 12, and the center of the curved pipe 12 is close to the direction of liquid flow during liquid addition. The liquid inlet pipe 125 is connected to the liquid storage tank, and the setting of the curved pipe 12 can keep the pipe surface in contact with the liquid smooth and reduce the resistance of the liquid.

[0035] The liquid adding gun nozzle assembly includes a one-way valve core 121, and the one-way valve core 121 is slidably connected to the outside of the liquid adding sleeve 126. The liquid adding sleeve 126 is sleeved on the outside of the liquid adding tube 123 and sealed between the liquid adding tube 123, that is, the liquid adding sleeve 126 can axially limit the liquid adding tube 123. The liquid adding sleeve 126 can be directly connected to the first piston 97 and driven to move forward and backward by the first piston 97. The liquid adding tube 123 and the liquid inlet tube 125 are connected by a bent pipe 12.

[0036] The outer part of the liquid adding tube 123 is provided with a first spring 122, one end of the first spring 122 is in contact with the step surface on the outer side of the liquid adding tube 123, and the other end is in contact with the one-way valve core 121. The sealing method can adopt the sealing method in the prior art. In this embodiment, a step surface protruding outward is provided on the outer side wall of the liquid adding tube 123, and the outer part of the liquid adding tube 123 is provided with a first spring 122, one end of the first spring 122 is in contact with the one-way valve core 121, and the other end is in contact with the step surface, so that when adding liquid, the sealing of the liquid adding tube 123 is further strengthened by the first spring 122, so that the liquid adding tube 123 and the liquid adding sleeve 126 are more tightly connected, thereby ensuring the sealing effect.

[0037] A gasket may also be provided in the first spring 122, and the gasket is located between the one-way valve core 121 and the liquid adding tube 123 (not shown in the figure); the gasket may also be omitted, so that the diameter of the liquid adding tube 123 is smaller than the diameter of the one-way valve core 121. When the liquid adding tube 123 moves forward relative to the one-way valve core 121, the liquid adding tube 123 may be directly inserted into the one-way valve core 121, so that the liquid flows directly from the liquid adding tube 123 into the one-way valve core 121, thereby avoiding contact between the liquid and the first spring 122.

[0038] Furthermore, the liquid adding sleeve 126 is connected to the transition pipe 124 by a threaded connection. The transition pipe 124 is connected to the first piston 97. The liquid adding pipe 123 is arranged in the transition pipe 124, and the liquid adding pipe 123 is axially limited and sealed by the transition pipe 124 so that no liquid will flow out when adding liquid.

[0039] The curved pipe 12 is located at the front end of the first piston 97 , extends from the lower side wall of the transition pipe 124 and bends toward the ground. The curved pipe 12 is arranged at the lower side of the liquid filling gun and does not affect the use of the operator.

[0040] The transition pipe 124 is connected to the sliding sleeve 11 by a fixing bolt 111, and a gun head 10 is arranged between the transition pipe 124 and the sliding sleeve 11, and there is relative movement between the sliding sleeve 11 and the gun head 10; the gun head 10 is connected to the double-acting cylinder 9 by a reinforcing rod 13 to keep it fixed.

[0041] The side wall of the gun head 10 is provided with several claw holes, each of which is rotatably connected with a claw 16, and the hook of the claw 16 cooperates with the liquid filling port of the vehicle. Through the locking claw of the claw 16, the gun head 10 can be tightly connected with the liquid filling port on the vehicle; the sliding sleeve 11 is sleeved on the outside of the claw 16, and the claw 16 can open / lock the claw by sliding the sliding sleeve 11. In this embodiment, preferably three claw holes are evenly distributed on the side of the gun head 10, each claw hole corresponds to a claw 16, and a long hole is also provided between the two claw holes, and each long hole corresponds to a fixing bolt 111, so that the fixing bolt 111 can slide back and forth, and the claw 16 and the fixing bolt 111 are staggered; the number of the claws 16 is at least two, and in this embodiment, the number of the claws 16 is preferably three, so as to ensure the gripping strength of the claws 16.

[0042] The other end of the clamping claw 16 is connected to the gun head 10 through the second spring 162. A groove 163 is provided in the middle position of the side where the clamping claw 16 contacts the sliding sleeve 11. A flange 164 is provided on one end of the clamping claw 16 close to the spring. The flange 164 cooperates with the inner side of the sliding sleeve 11 to realize the opening / locking of the clamping claw 16. It can be understood that when the first piston 97 drives the liquid adding nozzle assembly to move backward, the sliding sleeve 11 also moves backward. At this time, the sliding sleeve 11 cooperates with the flange 164 on the rear side of the rotating shaft 161, so that the rear end of the clamping claw 16 is pressed downward, exposing the clamping claw 16, and presenting an open claw state. The second spring 162 plays a role in strengthening the fixation; when the first piston 97 drives the liquid adding nozzle assembly to move forward, the sliding sleeve 11 also moves forward. At this time, the sliding sleeve 11 restricts the clamping claw 16 in the sliding sleeve 11 to realize the locking claw function.

[0043] The claw 16 is rotatably connected to the gun head 10 via a rotating shaft 161, and the rotating shaft 161 protrudes from the outer surface of the claw 16; the rotating shaft 161 is disposed between the hook portion and the second spring 162, close to one end of the second spring 162. The end of the rotating shaft 161 protrudes from the outer surface of the claw 16, so that when the liquid filling gun is used in a snowy area, snow will not accumulate at the rotating shaft 161, causing the rotating shaft 161 to get stuck. When the sliding sleeve 11 moves backward ( Figure 3 When sliding downward in the middle, the claw 16 cannot be opened.

[0044] The double-acting cylinder 9 is provided with a first handle 17 on one end surface away from the first piston 97, and the two ends of the first handle 17 are connected to a bracket 14, and the bracket 14 is triangular and symmetrically connected to the end surface of the double-acting cylinder 9; the gun head 10 is connected to the double-acting cylinder 9 by a plurality of reinforcing rods 13, and the reinforcing rods 13 are provided with a second handle 15, and the two ends of the second handle 15 are connected to the bracket 14, and the two brackets 14 are respectively located at the two ends of the reinforcing rod 13. Through the first handle 17 and the second handle 15, it can make the operator more labor-saving when holding.

[0045] Furthermore, the second handle 15 can also be arranged on the gun head 10, close to one end of the double-acting cylinder 9, and arranged on the side of the gun head 10, in a cylindrical shape, so as to maintain a stable grip.

[0046] Specific working method: When the vehicle needs to be refilled, the control lever 4 on the differential controller is moved to the open claw position to open the claw 16, and then the gun head 10 is aimed at the filling port on the vehicle. At this time, the control lever 4 is moved to the lock claw position to lock the claw 16 and the filling port on the vehicle and keep it stable; then the control lever 4 is moved to the filling position to make the one-way valve body 121 backward ( Figure 3 The one-way valve body 121 is pushed open downwardly, so that the liquid can flow out of the one-way valve body 121 and flow into the vehicle, completing the liquid adding operation.

[0047] After the filling is completed, the control lever 4 only needs to be moved to the open claw position, so that the claw 16 can be opened, so that the filling gun is separated from the filling port of the vehicle.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A differential controller, characterized in that: Two parallel through holes are arranged in the controller body (1), and a first multi-way valve core (2) and a second multi-way valve core (3) are slidably arranged in the through holes respectively. The first multi-way valve core (2) and the second multi-way valve core (3) are arranged in a staggered manner. The first multi-way valve core (2) and the second multi-way valve core (3) are connected together through a control rod (4), and the other end of the control rod (4) extends out of the outside of the controller body (1); an air inlet (5) is arranged on the controller body (1), and the air inlet (5) is connected to the two parallel through holes through air passages respectively, and a plurality of air outlet channels are arranged on the controller body (1); by sliding the control rod (4), different air outlet channels are connected to the air inlet (5) via the first multi-way valve core (2) and / or the second multi-way valve core (3).

2. The differential controller according to claim 1, characterized in that: A plurality of air-isolating O-rings (6) in contact with the inner wall of the through hole are respectively arranged on the first multi-way valve core (2) and the second multi-way valve core (3), and an air inlet channel is formed between two adjacent air-isolating O-rings (6). The air-isolating O-rings (6) on the first multi-way valve core (2) and the air-isolating O-rings (6) on the second multi-way valve core (3) are arranged in a staggered manner.

3. The differential controller according to claim 2, characterized in that: The first multi-way valve core (2) is provided with five air intake channels, and the second multi-way valve core (3) is provided with four air intake channels; a baffle (7) is slidably connected to a position on the control rod (4) that contacts the controller body (1), and the baffle (7) is fixedly connected to the controller body (1).

4. A multi-position booster liquid filling gun, comprising a differential controller according to any one of claims 1 to 3, characterized in that: A double-acting cylinder (9) is provided on the liquid filling gun, a first piston (97) and a second piston (98) are provided in the double-acting cylinder (9), a first air inlet (94) is provided on the side of the double-acting cylinder (9) close to the first piston (97), a second air inlet (96) is provided on the side of the double-acting cylinder (9) close to the second piston (98), a third air inlet (95) is provided between the first piston (97) and the second piston (98), the first air inlet (94), the second air inlet (96) and the third air inlet (95) are respectively connected to the air outlet channel on the controller body (1); the first piston (97) is connected to a curved liquid filling gun head mechanism, and a locking claw mechanism is connected to the curved liquid filling gun head mechanism.

5. A multi-position booster liquid filling gun according to claim 4, characterized in that: The curved liquid adding gun head mechanism comprises a liquid adding gun nozzle assembly, wherein the liquid adding gun nozzle assembly is connected to a liquid inlet pipe (125) via a curved pipe (12), and the center of the curved pipe (12) is close to the direction of liquid flow during liquid addition.

6. A multi-position booster liquid filling gun according to claim 5, characterized in that: The liquid adding gun nozzle assembly comprises a one-way valve core (121), the one-way valve core (121) is slidably connected to a liquid adding sleeve (126) on the outside, the liquid adding sleeve (126) is sleeved on the outside of a liquid adding pipe (123) and is sealed with the liquid adding pipe (123), and the liquid adding pipe (123) is connected to a liquid inlet pipe (125) by a bent pipe (12); a first spring (122) is sleeved on the outside of the liquid adding pipe (123), one end of the first spring (122) is in contact with a step surface on the outside of the liquid adding pipe (123), and the other end is in contact with the one-way valve core (121).

7. A multi-position booster liquid filling gun according to claim 6, characterized in that: The liquid adding sleeve (126) is connected to a transition pipe (124), the transition pipe (124) is connected to a first piston (97), and the liquid adding pipe (123) is arranged in the transition pipe (124); the transition pipe (124) is connected to a sliding sleeve (11) by means of a fixing bolt (111), a gun head (10) is arranged between the transition pipe (124) and the sliding sleeve (11), and relative movement occurs between the sliding sleeve (11) and the gun head (10); a plurality of claw holes are arranged on a side wall of the gun head (10), each of the claw holes being rotatably connected to a clamping claw (16), a hook portion of the clamping claw (16) being matched with a liquid adding port of a vehicle; the sliding sleeve (11) is sleeved on the outside of the clamping claw (16), and the clamping claw (16) is opened / locked by the sliding of the sliding sleeve (11).

8. The multi-position booster liquid filling gun according to claim 7, characterized in that: The other end of the clamping claw (16) is connected to the gun head (10) via a second spring (162); a groove (163) is provided at the middle position of the side surface of the clamping claw (16) in contact with the sliding sleeve (11); a flange (164) is provided on one end of the clamping claw (16) close to the spring; the flange (164) cooperates with the inner side surface of the sliding sleeve (11) to realize the opening / locking of the clamping claw (16).

9. The multi-position booster liquid filling gun according to claim 8, characterized in that: The clamping claw (16) is rotatably connected to the gun head (10) via a rotating shaft (161), and the rotating shaft (161) protrudes from the outer surface of the clamping claw (16); the rotating shaft (161) is arranged between the hook portion and the second spring (162), close to one end of the second spring (162); the number of the clamping claws (16) is at least two.

10. A multi-position power-assisted liquid filling gun according to any one of claims 4 to 9, characterized in that: A first handle (17) is provided on an end surface of the double-acting cylinder (9) away from the first piston (97), and the two ends of the first handle (17) are connected to a bracket (14), and the bracket (14) is triangular and symmetrically connected to the end surface of the double-acting cylinder (9); the gun head (10) and the double-acting cylinder (9) are connected by a plurality of reinforcing rods (13), and a second handle (15) is provided on the reinforcing rod (13), and the two ends of the second handle (15) are connected to the bracket (14), and the two brackets (14) are respectively located at the two ends of the reinforcing rod (13).

Images