Secondary connection device for automatic charging gun head

Abstract

Disclosed in the present invention is a secondary connection device for an automatic charging gun head, comprising: a male-end assembly and a female-end assembly. The male-end assembly is mounted on the automatic charging gun head, and the female-end assembly is mounted on a mechanical arm; or the female-end assembly is mounted on the automatic charging gun head, and the male-end assembly is mounted on a mechanical arm. The male-end assembly comprises a male-end locking member; the male-end locking member comprises a first mounting portion and a first locking portion; the outer side surface of the first mounting portion is a first guide surface; and the outer side surface of the first locking portion is a first locking surface. The female-end assembly comprises: a female-end locking member, a female-end assembly housing, and a locking apparatus; the female-end locking member comprises a second mounting portion, a guide portion, and a second locking portion; the inner side surface of the guide portion is a second guide surface; the inner side surface of the second locking portion is a second locking surface; and when the male-end locking member is inserted into the female-end locking member, the locking apparatus allows for locking or separation of the male-end locking member and the female-end locking member. In this way, high coupling stability and a simple structure are achieved.

Description

Secondary connection device of automatic charging gun head TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic charging, in particular to a secondary connection device of automatic charging gun head. BACKGROUND

[0002] The automatic charging robot often charges multiple vehicles at the same time, that is, after completing the charging action for a vehicle, the mechanical arm is disconnected from the automatic charging gun head, and then a new automatic charging gun head is connected at the next vehicle charging position to complete the charging process. In this process, a special device is needed to realize the disconnection and connection action of the mechanical arm and the charging gun head, that is, the secondary connection device of the automatic charging gun head.

[0003] In related technologies, the secondary connection device of the automatic charging gun head mainly adopts the motor-driven and two-side clamping mode to clamp the automatic charging gun head. This device not only has a complex structure, but also has poor stability when connecting with the automatic charging gun head, and is prone to automatic charging gun head falling off. TECHNICAL PROBLEM

[0004] To solve the above technical problems, the present application provides a secondary connection device of automatic charging gun head, which adopts a locking device to lock the male end assembly and the female end assembly, can effectively avoid the automatic charging gun head falling off, and has a simple structure. TECHNICAL SOLUTION

[0005] The technical scheme adopted by the present application is as follows:

[0006] The application discloses a secondary connection device for automatically charging a gun head, comprising a male end assembly 100 and a female end assembly 200, wherein the male end assembly 100 is installed on the automatically charging gun head, and the female end assembly 200 is installed on a mechanical arm; or the female end assembly 200 is installed on the automatically charging gun head, and the male end assembly 100 is installed on the mechanical arm; wherein the male end assembly 100 comprises a first mounting seat 110 and a male end locking piece 120, the first mounting seat 110 is installed on the automatically charging gun head or the mechanical arm, the male end locking piece 120 comprises a first mounting part 121 and a first locking part 122, the first mounting part 121 is fixed on the first mounting seat 110, the outer side surface of the first mounting part 121 is a first guide surface, and the outer side surface of the first locking part 122 is a first locking surface; the female end assembly 200 comprises a female end locking piece 210, a female end assembly shell 220 and a locking device 230, one end of the female end assembly shell 220 is directly or indirectly fixed on the mechanical arm or the automatically charging gun head, the female end locking piece 210 comprises a second mounting part 211, a guide part 212 and a second locking part 213, the second mounting part 211 is fixedly connected with the other end of the female end assembly shell 220, the inner side surface of the guide part 212 is a second guide surface, the inner side surface of the second locking part 213 is a second locking surface, and the locking device 230 is arranged in a cavity formed by the female end assembly shell 220 and the female end locking piece 210, and the locking device is used for controlling a sliding piece (2314) to move in a wedge-shaped gap between the first locking part (122) and the second locking part (213) when the male end locking piece 120 is inserted into the female end locking piece 210, so that the male end locking piece 120 is locked with the female end locking piece 210 or separated from the female end locking piece 210.

[0007] In an embodiment of the application, the locking device 230 comprises a holder 231, the holder 231 comprises a sliding piece mounting part 2311 and a limiting part 2312, one or more through holes 2313 are formed in the sliding piece mounting part 2311, and a sliding piece 2314 is arranged in each through hole 2313; and a driving assembly 232, one end of the driving assembly 232 is connected with the side of the limiting part 2312 away from the sliding piece mounting part 2311, and the other end of the driving assembly 232 is fixed on the inner side surface of the female end assembly shell 220, the driving assembly 232 is used for driving the holder 231 to move, and controlling the sliding piece (2314) to be stuck or separated out of the wedge-shaped gap between the first locking part (122) and the second locking part (213).

[0008] In an embodiment of the application, the sliding piece is a rotary body with a central symmetry structure.

[0009] In one embodiment of the present application, the driving assembly 232 comprises: a resilient component 2321, one end of which is connected to the side of the limiting portion 2312 away from the sliding piece mounting portion 2311, and the other end of which is fixed to the inner side of the female end assembly shell 220; and an output component 2322, one end of which is opposite to the side of the limiting portion 2312 away from the sliding piece mounting portion 2311, and the other end of which is fixed to the inner side of the female end assembly shell 220.

[0010] In one embodiment of the present application, the resilient component 2321 comprises: a spring guide rod 23211, which is fixed to the inner side of the female end assembly shell 220; and a spring 23212, which is sleeved on the spring guide rod 23211, one end of which is fixed to the inner side of the female end assembly shell 220, and the other end of which is connected to the side of the limiting portion 2312 away from the sliding piece mounting portion 2311.

[0011] In one embodiment of the present application, the output component 2322 is one of an electromagnet, a motor, a pneumatic cylinder and a hydraulic cylinder.

[0012] In one embodiment of the present application, the side of the second mounting portion 211 is provided with an artificial break hole 214. Advantages

[0013] Advantages of the present application:

[0014] The secondary connection device of the automatic charging gun head of the present application adopts a locking device to lock the male end assembly and the female end assembly, which can effectively avoid the situation that the automatic charging gun head falls off, and has a simple structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic view of the secondary connection device of the automatic charging gun head according to an embodiment of the present application;

[0016] Fig. 2 is an exploded view of the male end assembly according to one embodiment of the present application;

[0017] Fig. 3 is a structural schematic view of the male end locking piece according to one embodiment of the present application;

[0018] Fig. 4 is an exploded view of the female end assembly according to one embodiment of the present application;

[0019] Fig. 5 is a structural schematic view of the female end locking piece according to one embodiment of the present application;

[0020] Fig. 6 is an exploded view of the female end assembly according to another embodiment of the present application;

[0021] Fig. 7 is a structural schematic diagram of a retainer according to an embodiment of the present application;

[0022] Fig. 8 is a schematic diagram of a male component and a female component in a locked state according to an embodiment of the present application;

[0023] Fig. 9 is a schematic diagram of a male component and a female component in a disconnected state according to an embodiment of the present application. Best Mode for Carrying Out the Invention

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0025] Fig. 1 is a structural schematic diagram of a secondary connection device of an automatic charging gun head according to an embodiment of the present application.

[0026] As shown in Fig. 1, the secondary connection device of the automatic charging gun head according to an embodiment of the present application can include a male component 100 and a female component 200. As a possible implementation, the male component 100 is installed on the automatic charging gun head, and the female component 200 is installed on a mechanical arm. As another possible implementation, the female component 200 is installed on the automatic charging gun head, and the male component 100 is installed on the mechanical arm.

[0027] As shown in Fig. 2, the male component 100 includes a first mounting seat 110 and a male locking piece 120, and the first mounting seat 110 is installed on the automatic charging gun head or the mechanical arm. As shown in Fig. 3, the male locking piece 120 includes a first mounting portion 121 and a first locking portion 122, the first mounting portion 121 is fixed on the first mounting seat 110, and the outer side surface of the first mounting portion 121 is a first guide surface, and the outer side surface of the first locking portion 122 is a first locking surface.

[0028] It can be understood that, in an embodiment of the present application, as shown in Figs. 2 and 3, a boss is formed on the side of the first mounting seat 110 away from the automatic charging gun head, the first mounting portion 121 is sleeved on the boss and fixed on the first mounting seat 110, so that the stability of the first mounting portion 121 fixed on the first mounting seat 110 can be improved.

[0029] As a possible implementation, as shown in Fig. 3, a plurality of screw locking holes 123 are opened on the surface of the first mounting seat 110 intersecting with the first locking portion 122, and the first mounting portion 121 is fixed on the first mounting seat 110 by screws through the screw locking holes 123.

[0030] As shown in Fig. 4, the female end assembly 200 comprises a female end locking member 210, a female end assembly housing 220 and a locking device 230, one end of the female end assembly housing 220 is directly or indirectly fixed on the mechanical arm or the automatic charging gun head. As shown in Fig. 5, the female end locking member 210 comprises a second mounting portion 211, a guide portion 212 and a second locking portion 213, the second mounting portion 211 is fixedly connected with the other end of the female end assembly housing 220, the inner side surface of the guide portion 212 is a second guide surface, and the inner side surface of the second locking portion 213 is a second locking surface. As shown in Fig. 4, the locking device 230 is arranged in the cavity formed by the female end assembly housing 220 and the female end locking member 210. The locking device is used to control the movement of the sliding member 2314 in the wedge-shaped gap between the first locking portion 122 and the second locking portion 213 when the male end locking member 120 is inserted into the female end locking member 210, so as to lock or release the male end locking member 120 and the female end locking member 210.

[0031] As a possible embodiment, as shown in Fig. 6, the female end assembly 200 further comprises a connecting plate 240, the connecting plate 240 is fixed on the mechanical arm or the automatic charging gun head, and one end of the female end assembly housing 220 is fixed on the connecting plate 240, i.e. one end of the female end assembly housing 220 is indirectly fixed on the mechanical arm or the automatic charging gun head.

[0032] In an embodiment of the present application, as shown in Figs. 4 and 7, the locking device 230 comprises a holder 231 and a driving assembly 232, the holder 231 comprises a sliding member mounting portion 2311 and a limiting portion 2312, the sliding member mounting portion 2311 is provided with one or more through holes 2313, and each through hole 2313 is provided with a sliding member 2314; one end of the driving assembly 232 is opposite to the side of the limiting portion 2312 away from the sliding member mounting portion 2311, and the other end of the driving assembly 232 is fixed on the inner side surface of the female end assembly housing 220, and the driving assembly 232 is used to drive the holder 231 to move the sliding member 2314 in the wedge-shaped gap.

[0033] In an embodiment of the present application, the sliding member 2314 is a rotary body with a central symmetry structure, for example, a steel ball, a cylindrical workpiece, etc. Specifically, when the sliding member 2314 is a cylindrical workpiece, the corresponding through hole 2313 can be provided in the form of a strip-shaped slot.

[0034] In one embodiment of the present application, as shown in Fig. 4, the driving assembly 232 comprises: a resilient component 2321, one end of which is connected to the side of the limiting portion 2312 away from the sliding member mounting portion 2311, and the other end of which is fixed to the inner side of the female end assembly housing 220; and an output component 2322, one end of which is opposite to the side of the limiting portion 2312 away from the sliding member mounting portion 2311, and the other end of which is fixed to the inner side of the female end assembly housing 220.

[0035] In one embodiment of the present application, as shown in Fig. 4, the resilient component 2321 can comprise: a spring guide rod 23211, which is fixed to the inner side of the female end assembly housing 220; and a spring 23212, which is sleeved on the spring guide rod 23211, one end of which is fixed to the inner side of the female end assembly housing 220, and the other end of which is connected to the side of the limiting portion 2312 away from the sliding member mounting portion 2311. It can be understood that in other embodiments of the present application, the resilient component 2321 can also be in other forms, for example, it can be a telescopic rod.

[0036] Specifically, the first mounting seat 110 and the male end locking piece 120 are fixedly connected together to form an integral whole. The female end locking piece 210 is fixedly connected to the end of the female end assembly housing 220 close to the male end assembly 100. The sliding member 2314 is placed in the through hole 2313. The assembly of the sliding member 2314 and the retainer 231 can move in the narrow space formed by the female end locking piece 210 and the driving assembly 232. The first locking surface and the second locking surface form a wedge-shaped gap, and the angle of the wedge-shaped gap is set to ensure that a clamping state can be formed when cooperating with the sliding member 2314.

[0037] The spring 23212 is arranged between the retainer 231 and the inner bottom surface of the female end assembly housing 220. In the default state, the retainer 231 is pushed by the spring 23212, thereby driving the sliding member 2314 to be pushed in the wedge-shaped gap formed by the first locking surface and the second locking surface to form a clamping state, thereby ensuring that the male end assembly 100 cannot be pulled out. The spring guide rod 23211 is arranged inside the female end assembly housing 220, and has a guiding effect on the spring 23212. The output component 2322 is arranged at a position close to the middle of the inside of the female end assembly housing 220. The female end assembly housing 220 is fixedly connected to the connecting plate 240, so that the female end assembly 200 as a whole can be fixed to a mechanical arm or an automatic charging gun head. One end of the through hole 2313 is tightened to ensure that the sliding member 2314 will not fall out in the non-docking state.

[0038] The specific action of the secondary connection device in the above embodiment will be described in detail below.

[0039] Specifically, before the automatic charging mechanical arm does not plug the gun, or before the end of plugging the gun, the secondary connection device locks the automatic charging gun head by mechanical clamping, keeps the connection between the automatic charging gun head and the mechanical arm, and the specific state is shown in FIG. 8.

[0040] In this state, the output component 2322 does not provide tension. The retainer 231 moves to the male assembly 100 under the action of the spring 23212, and the sliding member 2314 is clamped in the wedge-shaped gap composed of the first locking surface and the second locking surface. The spring force existing on the spring 23212 makes the squeezed sliding member 2314 have a larger normal pressure on the two sides of the contact surface, that is, the first locking surface and the second locking surface. When the male assembly 100 is pulled outward, the sliding member 2314 and the first locking surface will form a friction force, which prevents the male assembly 100 from moving in the plugging direction. At the same time, the friction force will drive the sliding member 2314 to move to the narrow part of the second locking surface. In this movement process, the sliding member 2314 is squeezed, thereby increasing the normal pressure of the sliding member 2314 on the first locking surface. According to the relationship between contact pressure and friction, the greater the pressure, the greater the friction. The increased friction further prevents the male assembly 100 from moving outward. That is, the greater the friction between the sliding member 2314 and the first locking surface, the more difficult it is to move the male assembly 100 outward, resulting in the male assembly 100 being unable to move outward. Therefore, the automatic charging gun head is fixed relative to the female assembly 200 when not plugging the gun and before the end of plugging the gun.

[0041] It should be noted that in an embodiment of the present application, the first guide surface can be a conical guide surface, and the second guide surface can also be correspondingly provided as a conical guide surface. When the male locking member 120 is inserted into the female locking member 210, the first guide surface and the second guide surface are in contact. Therefore, during the docking process, the two conical surfaces cooperate to correct the positioning error caused by visual guidance or mechanical arm movement, thereby improving the accuracy of repeatedly picking and placing the gun head, and ultimately realizing that the automatic charging gun head does not introduce additional positional deviation when charging the automobile charging seat again.

[0042] When it is necessary to disconnect the automatic charging gun head, such as when the mechanical arm plugs the gun and needs to disconnect and move to the next plugging position to charge the next vehicle, the power component 2322 is powered on to disconnect, and the specific state is shown in FIG. 9.

[0043] At this time, the output component 2322 generates a pulling force, and the retainer 231 pulls the sliding piece 2314 to move away from the male end assembly 100 under the action of the pulling force. Thus, the sliding piece 2314 is moved to the first locking surface wide part, so that a gap is generated among the sliding piece 2314, the first locking surface and the second locking surface. The sliding piece 2314 no longer has any friction with the first locking surface and the second locking surface. Therefore, the male end assembly 100 can be freely separated from the female end assembly 200.

[0044] It should be noted that, if the male end assembly 100 and the female end assembly 200 need to be combined again, the mechanical arm can be in a fixed path or a visual guide mode, so that the male locking piece 120 is inserted into the corresponding cavity of the female end assembly 200, thereby forming a locking state, and finally returning to the state that the male end assembly 100 is fixedly connected with the female end assembly 200.

[0045] Therefore, the secondary connection device of the automatic charging gun head can effectively avoid the situation that the automatic charging gun head falls off by locking the male end assembly and the female end assembly by the locking device.

[0046] In an embodiment of the present application, at least one of the guide part 212 and the second locking part 213 is a non-circular cross section in a plane perpendicular to the gun insertion direction. Thus, it is ensured that the male end assembly 100 and the female end assembly 200 will not rotate circumferentially after being connected.

[0047] In an embodiment of the present application, as shown in FIG. 5, the side surface of the second mounting part 211 is opened to form an artificial break hole 214.

[0048] Specifically, if the mechanical arm fails or the gun head needs to be manually charged, the automatic charging gun head needs to be manually taken off. For this purpose, the artificial break hole 214 reserved on the female locking piece 210 can be used to push the retainer 231 to overcome the pushing force of the spring 23212, drive the sliding piece 2314 to be separated from the first locking surface, so that the sliding piece 2314 and the first locking surface no longer generate normal pressure and friction, and thus the male end assembly 100 can be easily taken off.

[0049] In an embodiment of the present application, the output component 2322 is one of an electromagnet, a motor, an air cylinder and a hydraulic cylinder.

[0050] Specifically, the output component 2322 can be one of an electromagnet, a motor, an air cylinder and a hydraulic cylinder. Of course, in other embodiments, the output component 2322 can also be other devices for different application scenarios. And for different output components 2322, the corresponding retainers 231 can also be different. For example, the output component 2322 is an electromagnet, and the corresponding retainer 231 can be made of a magnetically conductive material.

[0051] In summary, according to the secondary connection device of the automatic charging gun head, the secondary connection device comprises a male end assembly and a female end assembly, the male end assembly is installed on the automatic charging gun head, and the female end assembly is installed on the mechanical arm, wherein the male end assembly comprises a first mounting seat and a male end locking piece, the first mounting seat is installed on the automatic charging gun head or the mechanical arm, the male end locking piece comprises a first mounting portion and a first locking portion, the first mounting portion is sleeved on the boss, the first mounting portion is fixed on the first mounting seat, the outer side surface of the first mounting portion is a first guide surface, and the outer side surface of the first locking portion is a first locking surface; the female end assembly 200 comprises a female end locking piece, a female end assembly shell and a locking device, one end of the female end assembly shell is directly or indirectly fixed on the mechanical arm, the female end locking piece comprises a second mounting portion, a guide portion and a second locking portion, the second mounting portion is fixedly connected with the other end of the female end assembly shell, the inner side surface of the guide portion is a second guide surface, the inner side surface of the second locking portion is a second locking surface, and the locking device is arranged in a cavity formed by the female end assembly shell and the female end locking piece; the locking device is used to control the movement of the sliding piece in the wedge-shaped gap between the first locking portion and the second locking portion when the male end locking piece is inserted into the female end locking piece, so that the male end locking piece and the female end locking piece are locked or separated. Therefore, the secondary connection device of the automatic charging gun head adopts the locking device to lock the male end assembly and the female end assembly, so that the situation that the automatic charging gun head falls off can be effectively avoided, and the structure is simple.

[0052] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0053] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0056] In addition, each functional unit in each embodiment of the present application can be integrated in one processing module, or each unit can exist physically separately, or two or more units can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0057] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A secondary connection device for automatically charging a gun head, characterized in that include: A male terminal assembly (100) and a female terminal assembly (200); wherein the male terminal assembly (100) is mounted on the automatic charging gun head, and the female terminal assembly (200) is mounted on the robotic arm; or, the female terminal assembly (200) is mounted on the automatic charging gun head, and the male terminal assembly (100) is mounted on the robotic arm; wherein, The male end assembly (100) includes a first mounting base (110) and a male end locking member (120). The first mounting base (110) is mounted on the automatic charging gun head or the robotic arm. The male end locking member (120) includes a first mounting part (121) and a first locking part (122). The first mounting part (121) is fixed on the first mounting base (110). The outer side of the first mounting part (121) is a first guide surface, and the outer side of the first locking part (122) is a first locking surface. The female end assembly (200) includes: a female end locking member (210), a female end assembly housing (220), and a locking device (230). One end of the female end assembly housing (220) is directly or indirectly fixed to the robotic arm or the automatic charging gun head. The female end locking member (210) includes a second mounting part (211), a guide part (212), and a second locking part (213). The second mounting part (211) is fixedly connected to the other end of the female end assembly housing (220). The inner surface of the guide part (212) is a second guide... On the facing side, the inner side of the second locking part (213) is the second locking surface. The locking device (230) is disposed in the cavity formed by the female end assembly housing (220) and the female end locking member (210). The locking device is used to control the sliding member (2314) to move in the wedge-shaped gap between the first locking part (122) and the second locking part (213) when the male end locking member (120) is inserted into the female end locking member (210), thereby locking or disengaging the male end locking member (120) from the female end locking member (210).

2. The secondary connection device for automatically charging a gun head according to claim 1, characterized in that, The locking device (230) includes: The retainer (231) includes a sliding mounting part (2311) and a limiting part (2312). The sliding mounting part (2311) has one or more through holes (2313), and each through hole (2313) is provided with a sliding member (2314). The drive assembly (232) has one end facing the side of the limiting part (2312) away from the sliding member mounting part (2311), and the other end is fixed to the inner side of the female end assembly housing (220). The drive assembly (232) is used to drive the retainer (231) to move the sliding member (2314) in the wedge-shaped gap.

3. The secondary connection device for the automatic charging gun head according to claim 2, characterized in that, The sliding member (2314) is a rotating body with a centrally symmetrical structure.

4. The secondary connection device for automatically charging a gun head according to claim 2, characterized in that, The driving component (232) includes: a resilient member (2321) having one end connected to the side of the limiting portion (2312) away from the slide mounting portion (2311) and the other end fixed to the inner side of the female assembly housing (220); an output member (2322) having one end opposite to the side of the limiting portion (2312) away from the slide mounting portion (2311) and the other end fixed to the inner side of the female assembly housing (220).

5. A secondary connection device for automatically charging a gun head according to claim 4, characterized in that The resilient member (2321) comprises: a spring guide rod (23211) fixed to the inner side of the female assembly housing (220); a spring (23212) sleeved on the spring guide rod (23211), one end of the spring (23212) being fixed to the inner side of the female assembly housing (220) and the other end being connected to the side of the limiting portion (2312) away from the slide mounting portion (2311).

6. The secondary connection device for automatically charging a gun head according to claim 4, characterized in that, The output member (2322) is one of an electromagnet, a motor, an air cylinder and a hydraulic cylinder.

7. The secondary connection device for automatically charging a gun head according to claim 1, characterized in that, The side of the second mounting portion (211) is provided with an artificial break hole (214).

8. The secondary connection device of the automatic charging gun head according to claim 1, characterized in that At least one of the guiding portion (212) and the second locking portion (213) is a non-circular cross section in the direction perpendicular to the insertion direction.

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