Explosion-proof mining charging gun

Abstract

The utility model relates to the technical field of charging guns, and discloses an explosion-proof mining charging gun, which comprises a socket and a plug, a locking structure is arranged between the socket and the plug, and the locking structure comprises a first pin, a second pin, a third pin and a control assembly used for controlling the third pin to slide. The first pin is fixedly arranged on the plug, a first fixing groove for the second pin to be inserted is formed in the first pin, the second pin is arranged on the socket in a sliding mode, and a second fixing groove for the third pin to be inserted is formed in the second pin. According to the technical scheme, the problem that a plug is easily separated from a socket in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of charging gun, especially relates to a mine explosion -proof charging gun. BACKGROUND

[0002] Charging gun, usually refers to the electric vehicle conduction charging system, the end is inserted into the vehicle charging interface, is responsible for the safe, reliable transmission of the electric energy of charging device (such as charging pile) to the battery of vehicle equipment.

[0003] At present, the common charging gun, including socket, plug, wherein, the plug is connected with the charging pile, the socket is installed on the equipment to be charged (such as coal explosion -proof mine new energy vehicle). But the plug of the common charging gun and the socket are mostly straight insertion type, and there is no reliable locking component between the two.

[0004] However, the downhole environment usually appears to be bumpy, violent vibration, therefore, the conventional charging plug is easy to fall off from the equipment to be charged in the use process, once the plug falls off from the socket, not only affects the production, the momentary large current and electric arc generated by the virtual connection of the battery are also major safety hazards. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a mine explosion -proof charging gun, to solve the problem that the plug is easy to separate from the socket in the related art.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] A mine explosion -proof charging gun, including socket, plug, the locking structure is arranged between the socket and the plug, the locking structure includes first pin, second pin, third pin, control assembly for controlling the sliding of third pin, the first pin is fixedly arranged on the plug, and the first pin is provided with a first fixed slot for inserting the second pin, the second pin is slidably arranged on the socket, and the second pin is provided with a second fixed slot for inserting the third pin, the second pin includes a pull rod, the pull rod is provided with a lifting body for facilitating lifting itself. The lifting body includes a connecting portion and a force applying portion, a shaft is arranged on the pull rod, and the shaft is rotatably connected with the connecting portion; the end of the connecting portion away from the force applying portion is provided with a avoiding arc surface; the projection surface of the connecting portion in the axial direction of the shaft is a rectangular structure.

[0008] In a possible implementation, the socket is provided with a fixing seat for installing the second pin, the plug is provided with a matching seat for installing the third pin and the control assembly, and the fixing seat is provided with a first insertion slot for the first pin.

[0009] In a possible implementation, the second pin further comprises a plug block, the pull rod and the plug block are both in sliding connection with the fixed seat, and the end of the pull rod away from the plug block is located outside the fixed seat, the second fixed groove is located on the plug block, and an elastic member is arranged between the end of the plug block close to the pull rod and the fixed seat.

[0010] In a possible implementation, the control assembly comprises a control shaft and an electromagnet for driving the control shaft to slide.

[0011] In a possible implementation, the first pin is provided with a first guide inclined surface at the end away from the third pin, and the second pin is provided with a second guide inclined surface at the end close to the third pin.

[0012] In a possible implementation, the fixed seat and the matching seat are provided with an observation window for observing whether the first pin and the second pin are matched.

[0013] The working principle and beneficial effects of the utility model are as follows:

[0014] 1. The utility model technical scheme sets the locking structure between the socket and the plug, so that the plug can be fixed by the locking structure when matched with the socket, and the problem that the direct insertion type charging gun is prone to falling off in the underground environment is solved from the root, and the condition of virtual connection of the battery is effectively avoided, and the instantaneous large current and arc generated between the plug and the socket are avoided to cause explosion.

[0015] 2. The locking structure in the utility model technical scheme mainly comprises a first pin, a second pin, a third pin and a control assembly for controlling the third pin to slide, wherein the first pin is fixedly arranged on the plug, and the first pin is provided with a first fixed groove. The second pin is slidably arranged on the socket, that is, the second pin is inserted into the first fixed groove (the first pin) through the sliding movement of the second pin on the socket, and the second pin is provided with a second fixed groove for inserting the third pin. That is, when the second pin and the first pin are matched, the control assembly is started, the control assembly drives the third pin into the second pin (the second fixed groove), the effect of multiple plugging is realized, and the locking reliability of the locking structure is effectively improved. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating creative labor.

[0017] Figure 1A partial enlarged view at A in FIG. 1;

[0018] Figure 2 A semi-sectional view of FIG. 1 or FIG. 3;

[0019] Figure 3 A partial enlarged view at B in FIG. 1; Figure 2 A partial enlarged view at A in FIG. 1;

[0020] Figure 4 A side view of FIG. 1 or FIG. 2 or FIG. 3;

[0021] Figure 5 A partial enlarged view at B in FIG. 1; Figure 5 A partial enlarged view at B in FIG. 1;

[0022] Explanation of reference numerals:

[0023] 1, socket; 11, fixed seat; 111, first slot; 2, plug; 21, matching seat; 3, locking structure; 31, first pin; 311, first fixed groove; 312, first guide inclined surface; 32, second pin; 321, second fixed groove; 322, pull rod; 323, plug block; 324, second guide inclined surface; 325, rotating shaft; 33, third pin; 34, control assembly; 341, control shaft; 342, electromagnet; 4, elastic member; 5, pull body; 51, connecting part; 512, avoiding arc surface; 52, force applying part; 6, observation window.

[0024] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0026] Embodiment 1

[0027] As shown in FIG. 1, the embodiment presents an explosion-proof mine charging gun, mainly comprising a socket 1 and a plug 2, and a locking structure 3 is arranged between the socket 1 and the plug 2, that is, the embodiment applies a locking force to the socket 1 and the plug 2 by means of the locking structure 3, thereby fundamentally solving the problem that the traditional direct insertion type charging gun is prone to loosening in the underground environment. Figure 1 As shown in FIG. 3, the locking structure 3 in the embodiment mainly comprises a first pin 31, a second pin 32, a third pin 33 and a control assembly 34 for controlling the sliding of the third pin 33.

[0028] Figures 2-3 As shown in FIG. 3, the locking structure 3 in the embodiment mainly comprises a first pin 31, a second pin 32, a third pin 33 and a control assembly 34 for controlling the sliding of the third pin 33.

[0029] ​The first pin 31 is fixedly arranged on the plug 2, and the first pin 31 is provided with a first fixed slot 311 for inserting the second pin 32. The second pin 32 is slidably arranged on the socket 1.

[0030] In this way, when the plug 2 is inserted into the socket 1, the second pin 32 on the socket 1 can be expanded and slid by sliding the second pin 32, so as to be embedded into the first pin 31 (the first fixed slot 311) on the plug 2. Preferably, the central axis of the second pin 32 is perpendicular to the horizontal plane, that is, the second pin 32 moves in a direction perpendicular to the horizontal plane, so that when it cooperates with the first pin 31, it can also be assisted by gravity, thereby improving the cooperation stability and reliability between the first pin 31 and the second pin 32.

[0031] Meanwhile, the second pin 32 is provided with a second fixed slot 321 for inserting the third pin 33, so that when the first pin 31 cooperates with the second pin 32, the control assembly 34 can be started to drive the third pin 33 to move, so that the third pin 33 cooperates with the second pin 32. The locking structure 3 in the embodiment has the function of multiple locking, which effectively ensures the locking stability and reliability of the locking structure 3.

[0032] And effectively avoid the situation of virtual connection of the battery, and then avoid the instantaneous large current and arc generated between the plug 2 and the socket 1 to cause explosion.

[0033] The control assembly 34 in the embodiment mainly includes a control shaft 341 and an electromagnet 342 for driving the control shaft 341 to slide, that is, the control shaft 341 is made of magnetic material. The control shaft 341 is provided with a moving space for back and forth movement in the matching seat 21. The specific structure of the moving space should be determined according to the actual structure (such as cross-sectional shape) of the control shaft 341, which will not be described here.

[0034] And the third pin 33 is fixedly connected with the control shaft 341, so that by switching the magnetic field direction of the electromagnet 342, the cooperation between the control shaft 341 and the electromagnet 342 can be switched between the two modes of attraction and repulsion.

[0035] Since the embodiment relies on electromagnetism to control whether the third pin 33 cooperates with the second pin 32, the control assembly 34 in the embodiment has the advantages of quick response and excellent dynamic performance: the establishment and disappearance of electromagnetic force is completed almost instantaneously when power is on and off, and the driving force directly acts on the control shaft 341 without inertia and friction loss caused by intermediate transmission links (such as gears and screws). This makes the response time of the assembly very short and the action frequency high.

[0036] Correspondingly, the electromagnet 342 is equipped with a control switch; the electromagnet 342 is preferably directly powered from the charging pile. How the control switch controls the electromagnet 342 should be determined according to how the actually selected electromagnet 342 switches modes (such as changing the current direction, changing the coil winding direction); how the power supply line between the electromagnet 342 and the charging pile is distributed should be determined according to the actual charging pile structure and site conditions, and this embodiment will not be described again.

[0037] Meanwhile, the socket 1 is provided with a fixed seat 11 for mounting the second pin 32, and the plug 2 is provided with a matching seat 21 for mounting the third pin 33 and the control assembly 34. By additionally providing the matching seat 21 and the fixed seat 11, the internal space of the socket 1 and the plug 2 occupied by the locking structure 3 is avoided. And the locking structure 3 is relatively independent of the socket 1 and the plug 2, which facilitates subsequent adjustment and maintenance work of the locking structure 3.

[0038] Correspondingly, the fixed seat 11 is provided with an avoidance hole for avoiding the third pin 33; the matching seat 21 is provided with a sliding hole for the third pin 33 to slide; the electromagnet 342 includes a sliding seat body for the control shaft 341 to slide.

[0039] Correspondingly, the fixed seat 11 is provided with a first insertion slot 111 for the first pin 31 to enter, so that the first pin 31 can be as little exposed as possible when the socket 1 and the plug 2 are matched with each other, so that the user or irrelevant personnel cannot directly touch the locking structure 3, avoiding unlocking triggered by curiosity or accident, which is particularly important when operated by non-professionals in public places.

[0040] Meanwhile, the second pin 32 includes a pull rod 322 and an insertion block 323, both of which are in sliding connection with the fixed seat 11, that is, both can slide in the fixed seat 11. Correspondingly, the pull rod 322 and the insertion block 323 are integrally formed, so that when any one of them is moved, the other can also be moved.

[0041] And the end of the pull rod 322 away from the insertion block 323 is located outside the fixed seat 11, so that the staff can directly pull the pull rod 322 to make the second pin 32 separate from the first pin 31, thereby facilitating the elimination of the locking effect of the locking structure 3.

[0042] The end of the insertion block 323 close to the pull rod 322 is provided with an elastic element 4 between the fixed seat 11, and the elastic element 4 is preferably a compression spring, and the elastic element 4 is sleeved on the pull rod 322 to ensure that the elastic element 4 can stably deform. Correspondingly, in order to facilitate the installation of the elastic element 4, the diameter of the projection of the insertion block 323 in the axial direction of the second pin 32 is greater than the diameter of the projection of the pull rod 322 in the axial direction of the second pin 32.

[0043] And since the plug 323 itself has a larger diameter (inscribed circle diameter) than the pull rod 322, the second fixed groove 321 is located on the plug 323, thereby effectively reducing the impact of the opening of the second fixed groove 321 on the structural strength of the second pin 32 itself.

[0044] The first pin 31 is provided with a first guide slope 312 away from the third pin 33, and the second pin 32 is provided with a second guide slope 324 close to the third pin 33, and the mutual cooperation of the two guide slopes enables the second pin 32 to avoid the first pin 31 when the plug 2 cooperates with the socket 1, and then enters the first fixed groove 311 under the action of the elastic member 4. In order to insert the plug 2 into the socket 1.

[0045] In order to facilitate the cancellation of the cooperation between the second pin 32 and the first pin 31, the pull rod 322 is provided with a lifting body 5 for facilitating the lifting of itself, and the positional relationship between the lifting body 5 and the pull rod 322 is fixed by a shaft, so that the lifting body 5 and the pull rod 322 are difficult to separate, thereby the existence of the lifting body 5 enables the staff to not need to hold the smooth radial surface of the pull rod 322 and exert a pulling force, effectively avoiding the situation that the staff slips when pulling the pull rod 322.

[0046] At the same time, as shown in Figures 4-5 In order to facilitate the user to check whether the first pin 31 and the second pin 32 are matched (whether the locking structure 3 plays a locking role), the fixed seat 11 and the matching seat 21 are provided with an observation window 6 for observing whether the first pin 31 and the second pin 32 are matched.

[0047] Embodiment 2

[0048] Different from embodiment 1, the control assembly 34 in this embodiment is preferably a telescopic motor, and the third pin 33 is linked with the output shaft of the telescopic motor. Compared with the electromagnetic control of the movement of the third pin 33 in embodiment 1, it can realize accurate position stopping and ensure that the third pin 33 has enough position to enter the second fixed groove 321, thereby effectively improving the fixing strength of the third pin 33 to the second pin 32.

[0049] Embodiment 3

[0050] On the basis of embodiment 1 or embodiment 2, the lifting body 5 in the present embodiment comprises a connecting portion 51 and a force applying portion 52, the connecting portion 51 and the force applying portion 52 are integrally formed, and the connecting strength between the two is fully guaranteed. The rotating shaft 325 is fixedly arranged on the pull rod 322, the rotating shaft 325 is rotationally connected with the connecting portion 51, the connecting portion 51 is provided with an avoiding arc surface 512 at an end away from the force applying portion 52, and the projection plane of the connecting portion 51 in the axial direction of the rotating shaft 325 is a rectangular structure. In this way, when the staff pries the force applying portion 52, the lifting body 5 itself can be flipped on the fixed seat 11 with the rotating shaft 325 as the rotation center, and drives the second pin 32 to move upward, then, by means of the abutting relationship between the connecting portion 51 and the fixed seat 11, the second pin 32 cannot be reset under the action of the elastic member 4, so that the second pin 32 in the present embodiment can long-term maintain the working state of being separated from the first pin 31 without human intervention, and the use flexibility of the present embodiment is effectively improved.

[0051] The same or similar reference signs in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0052] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof mining charging gun, comprising a socket (1) and a plug (2), characterized in that, A locking structure (3) is provided between the socket (1) and the plug (2). The locking structure (3) includes a first pin (31), a second pin (32), a third pin (33), and a control component (34) for controlling the sliding of the third pin (33). The first pin (31) is fixedly disposed on the plug (2) and has a first fixing groove (311) for the second pin (32) to be inserted. The second pin (32) is slidably disposed on the socket (1) and has a second fixing groove (321) for the third pin (33) to be inserted. The second pin (32) includes a pull rod (322), and the pull rod (322) is provided with a lifting body (5) for easy lifting. The lifting body (5) includes a connecting part (51) and a force-applying part (52). The pull rod (322) is provided with a rotating shaft (325), and the rotating shaft (325) is rotatably connected to the connecting part (51). The end of the connecting part (51) away from the force-applying part (52) is provided with a relief arc surface (512). The projection surface of the connecting part (51) in the axial direction of the rotating shaft (325) is a rectangular structure.

2. The explosion-proof mining charging gun according to claim 1, characterized in that, The socket (1) is provided with a fixing seat (11) for installing the second pin (32), the plug (2) is provided with a mating seat (21) for installing the third pin (33) and the control component (34), and the fixing seat (11) is provided with a first slot (111) for the first pin (31) to enter.

3. The explosion-proof mining charging gun according to claim 2, characterized in that, The second pin (32) also includes a plug (323). The pull rod (322) and the plug (323) are slidably connected to the fixed seat (11), and the end of the pull rod (322) away from the plug (323) is located outside the fixed seat (11). The second fixing groove (321) is located on the plug (323). An elastic element (4) is provided between the end of the plug (323) close to the pull rod (322) and the fixed seat (11).

4. The explosion-proof mining charging gun according to claim 1, characterized in that, The control assembly (34) includes a control shaft (341) and an electromagnet (342) for driving the control shaft (341) to slide.

5. The explosion-proof mining charging gun according to claim 2 or 3, characterized in that, The first pin (31) has a first guide slope (312) at the end away from the third pin (33), and the second pin (32) has a second guide slope (324) at the end close to the third pin (33).

6. The explosion-proof mining charging gun according to claim 2, characterized in that, An observation window (6) is provided between the fixed seat (11) and the mating seat (21) for observing whether the first pin (31) and the second pin (32) are mated.

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