Mining flame-proof power supply charging connector

Abstract

The utility model relates to a mining flame-proof type power supply charging connector with double locking, reliable connection and good anti-falling performance. The mining flame-proof type power supply charging connector comprises a plug and a socket, the plug is oppositely provided with two locking bosses adjacent to a connecting plug of the plug and an electromechanical interlocking mechanism. The electromechanical interlocking mechanism comprises a shell fixed on the outer surface of the plug, a first lock rod and a second lock rod which are connected with the shell, a driving piece for driving the first lock rod to stretch out and draw back, and a stroke sensor mounted on the second lock rod; a U-shaped swing arm is connected to the side, where the inserting groove is located, of the socket in a pivoted mode, locking grooves composed of a clamping limiting part and a guiding part are formed in the two opposite inner sides of the U-shaped swing arm, a first convex lug and a second convex lug are oppositely arranged on the U-shaped swing arm, and a penetrating hole allowing the first lock rod to penetrate through is formed in the first convex lug. The U-shaped swing arm swings after the connecting plug is inserted into the slot, and the locking boss is embedded into the locking slot to mechanically lock the connector; the stroke sensor is triggered when the second lug abuts against the second lock rod, so that the driving piece controls the first lock rod to be embedded into the penetrating hole and electrically locks the connector.

Description

Technical Field

[0001] The utility model relates to the technical field of charging equipment, in particular to a flameproof power charging connector for mining. Background Art

[0002] The flameproof power charging connector for mining is mainly used in coal mines and in environments with explosive gas mixtures such as coal dust and methane. It is used as a connection device between power cables and flameproof electrical switchgear. For mining equipment with high load drive requirements, mining cables with larger diameters and weights are required. When the cable slides from a height, the cable will quickly pull the connection between the plug and the socket in a very short time under the action of its gravity, causing the connection between the plug and the socket to be disconnected, thereby causing power failure of the equipment and even causing safety accidents. At present, the common flameproof power charging connectors for mining on the market only use simple mechanical locking structures such as bolts or buckles when charging mining equipment. When the operator makes an error in operation, the plug and socket of the connector are very likely to be detached, and the reliability and anti-fall performance of the connector are insufficient. Utility Model Content

[0003] Based on this, it is necessary to provide a mining flameproof power charging connector with double locking, reliable connection and good anti-falling performance to address the above shortcomings.

[0004] A flameproof power charging connector for mining, comprising a plug assembled on the charger side or the vehicle side through a cable and a socket assembled on the equipment side and plugged with the plug, the plug is provided with a plug connector, the socket is provided with a slot for inserting the plug connector, and the mating surfaces of the plug connector and the slot are respectively flameproof surfaces;

[0005] Two opposite sides of the plug are each provided with a locking boss at a position adjacent to the plug connector, and a side of the locking boss facing away from the plug connector is provided with an electromechanical interlocking mechanism fixed to the plug, the electromechanical interlocking mechanism comprising a shell fixed to the outer surface of the plug, a first locking rod and a second locking rod arranged at two opposite outer sides of the shell, a driving member accommodated in the inner cavity of the shell and electrically connected to the vehicle or charger controller to drive the end of the first locking rod to extend or retract, and a travel sensor installed on the second locking rod and electrically connected to the vehicle or charger controller;

[0006] The socket is provided with a U-shaped swing arm pivotally connected to the edge of the slot on the side where the slot is located, and two locking grooves corresponding to the two locking bosses are provided on two opposite inner side walls of the U-shaped swing arm, and the locking groove includes a clamping limit portion and a guide portion connected to the clamping limit portion and extending along the swinging direction of the U-shaped swing arm, and the guide portion penetrates the side of the U-shaped swing arm to form a clamping interface, and a locking mechanism corresponding to the electromechanical interlocking mechanism is provided on the U-shaped swing arm on the surface where the clamping interface is located, and the locking mechanism includes a first lug and a second lug relatively fixed on both sides of the U-shaped swing arm, and a through hole for the first locking rod to pass through is opened on the first lug;

[0007] The U-shaped swing arm swings after the plug connector is inserted into the slot, so that the locking boss is embedded in the locking groove and mechanically locks the plug and the socket. When the locking boss slides to the clamping limit portion of the locking groove, the second locking rod abuts against the inner side surface of the second lug and triggers the travel sensor. The driving member controls the end of the first locking rod to extend and embed into the through-hole of the first lug to electrically lock the plug and the socket.

[0008] In one of the embodiments, a groove is provided on a side surface of the shell away from the first locking rod, a limiting tube is embedded in the groove, the second locking rod passes through the limiting tube and is slidably inserted into the groove, the end of the second locking rod extends out of the groove and the second locking rod is provided with a convex portion which cooperates with the inner surface of the limiting tube to limit the stroke of the second locking rod, and an elastic trigger component is fixedly connected to one end of the second locking rod located in the groove, and the stroke sensor is accommodated in the groove and is located between the bottom of the groove and the elastic trigger component.

[0009] In one of the embodiments, the plug is bent to form a first pipe that cooperates with the socket and a second pipe that is assembled with the charger side or the vehicle side and connected to the first pipe, the plug connector is fixed in the first pipe at one end facing away from the second pipe, and cables electrically connected to the plug connector are arranged in the first pipe and the second pipe. The angle between the first pipe and the second pipe is greater than 90 degrees, the electromechanical interlocking mechanism is located in the area enclosed by the first pipe and the second pipe, and the shell is fixed to the connecting portion of the first pipe and the second pipe.

[0010] In one embodiment, a gripping handle is provided on the side of the second pipe facing away from the housing.

[0011] In one embodiment, the U-shaped swing arm includes two arm bodies arranged opposite to each other, a handle fixedly connected to one end of the two arm bodies away from the slot, the inner side surface of the arm body is provided with the locking groove, and the first lug and the second lug are respectively fixed on one arm body.

[0012] In one embodiment, the arm body is bent to form a first arm segment fixedly connected to the handle and a second arm segment fixedly connected to the first arm segment and pivotally connected to the edge of the slot, the angle between the first arm segment and the second arm segment is greater than 90 degrees, the locking groove is opened in the second arm segment, and the card interface faces away from the area surrounded by the first arm segment and the second arm segment; the first lug and the second lug are fixed on a side of the second arm segment facing away from the area surrounded by the first arm segment and the second arm segment and adjacent to the connecting portion between the first arm segment and the second arm segment.

[0013] In one embodiment, the bending direction of the plug is opposite to the bending direction of the arm.

[0014] In one embodiment, an axial hole penetrating the inner side and the outer side of the second arm segment is provided at the end of the second arm segment, and a swing shaft is provided on both side edges of the slot on the socket for correspondingly penetrating into the axial hole on the second arm segment.

[0015] In one of the embodiments, a mounting opening communicating with the inner cavity of the housing is provided on a side of the housing facing away from the plug, and a cover plate is installed at the mounting opening, and the cover plate is screwed to the edge of the mounting opening.

[0016] In one embodiment, the driving member is an electric motor.

[0017] The mining flameproof power charging connector of the utility model realizes mechanical locking of the plug and the socket through the cooperation of the locking boss on the plug and the locking groove of the swing arm on the socket, and realizes electrical locking of the plug and the socket through the driving member controlling the end of the first locking rod to extend and embed into the through-hole of the first lug. The double locking improves the stability of the connection between the plug and the socket of the connector, ensures that the plug and the socket are always in a locked state when the power is on, prevents the operator from lifting the swing arm due to misoperation, thereby preventing the plug and the socket from being disconnected, and improves the release performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a flameproof power charging connector for mining in one embodiment of the utility model;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of a flameproof power charging connector for mining in one embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a plug in one embodiment of the utility model;

[0021] Figure 4 A top view of a plug in one embodiment of the utility model;

[0022] Figure 5This is a schematic diagram of the structure of the socket and the U-shaped swing arm in one embodiment of the utility model;

[0023] Figure 6 It is a partial cross-sectional view of a plug and a socket when mechanically locked in one embodiment of the utility model;

[0024] Figure 7 It is a partial cross-sectional view of the second locking rod in one embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] Please combine Figure 1-7 The utility model discloses a flameproof power charging connector 10 for mining with double locking, reliable connection and good anti-drop performance. The flameproof power charging connector 10 for mining includes a plug 100 assembled on the charger side or the vehicle side through a cable and a socket 200 assembled on the equipment side and plugged with the plug 100. The plug 100 is provided with a plug connector 110, and the socket 200 is provided with a slot 210 for inserting the plug connector 110. In this embodiment, the plug connector 110 is a male connector fixed at the end of the plug 100, and a female connector is fixed at one end of the socket 200 that matches the plug 100. The end surface of the female connector is provided with a slot 210, and the mating surfaces of the plug connector 110 and the slot 210 are respectively flameproof surfaces. That is to say, the outer annular surface of the plug connector 110 that matches the slot 210 and the inner annular surface of the slot 210 that matches the plug connector 110 are both flameproof surfaces. Furthermore, the outer annular surface on the male connector that matches the inner wall of the plug 100 and the inner annular surface on the plug 100 that matches the male connector are also explosion-proof surfaces, and the outer annular surface on the female connector that matches the inner wall of the socket 200 and the inner annular surface on the socket 200 that matches the female connector are also explosion-proof surfaces. In this embodiment, the parameters such as the surface roughness, length, and gap of the explosion-proof surface are limited to achieve explosion-proofing of the connection portion between the plug 100 and the socket 200.

[0027] A locking boss 120 is provided at two opposite sides of the plug 100 at a position adjacent to the plug connector 110. The locking boss 120 is provided with an electromechanical interlocking mechanism fixed to the plug 100 on one side facing away from the plug connector 110, that is, the distance from the electromechanical interlocking mechanism to the end of the plug connector 110 is greater than the distance from the locking boss 120 to the end of the plug connector 110. The electromechanical interlocking mechanism includes a housing 130 fixed to the outer surface of the plug 100, a first locking rod 140 and a second locking rod 150 provided at two opposite outer sides of the housing 130, a driving member 160 received in the inner cavity of the housing 130 and electrically connected to the vehicle or charger controller to drive the end of the first locking rod 140 to extend or retract, and a travel sensor 170 installed on the second locking rod 150 and electrically connected to the vehicle or charger controller. In this embodiment, the first locking rod 140 extends from the housing 130 and can move relative to the housing 130 under the drive of the driving member 160, so that the end of the first locking rod 140 is close to or away from the housing 130. In other words, the first locking rod 140 is slidably mounted on the housing 130. The second locking rod 150 can be fixedly connected to the housing 130, and the stroke sensor 170 is arranged at the end of the second locking rod 150, or the end of the second locking rod 150 can be arranged as a telescopic structure to meet the triggering of the stroke sensor 170 and ensure the normal response of the stroke sensor 170. Preferably, in the present embodiment, the driving member 160 is an electric motor, a screw rod is fixedly connected to the output shaft of the motor, and a threaded hole rotatably sleeved on the screw rod is opened on one end of the first locking rod 140 located in the inner cavity of the shell 130. In this way, when the motor is working, the output shaft of the motor drives the screw rod to rotate, and the rotation of the screw rod is converted into a linear motion of the first locking rod 140 through the cooperation of the external thread on the screw rod and the internal thread of the threaded hole on the first locking rod 140, thereby driving the end of the first locking rod 140 to extend or retract.

[0028] A U-shaped swing arm 300 is provided on the socket 200 at the side where the slot 210 is located, and is pivotally connected to the edge of the slot 210. The U-shaped swing arm 300 is used to assist the plugging and unplugging of the connector and to achieve mechanical locking of the connector. Two opposite inner side walls of the U-shaped swing arm 300 are provided with two locking grooves 310 corresponding to two locking bosses 120, that is, each locking groove 310 is used to insert a corresponding locking boss 120 and limit the locking boss 120. In this embodiment, the inner side wall of the U-shaped swing arm 300 refers to the side wall of the U-shaped swing arm 300 located on one side of the area surrounded by it. The locking groove 310 includes a clamping limit portion 311 and a guide portion 312 connected to the clamping limit portion 311 and extending along the swinging direction of the U-shaped swing arm 300. The guide portion 312 penetrates the side of the U-shaped swing arm 300 to form a clamping interface 313, and the clamping interface 313 is used to provide an entrance for the locking boss 120 to be embedded in the locking groove 310. In this embodiment, the inner contour shape of the snap-fit ​​limit portion 311 is adapted to the outer contour shape of the locking boss 120, the guide portion 312 is an arc-shaped channel, and a corner portion is provided at the transition portion between the snap-fit ​​limit portion 311 and the limit portion. When the locking boss 120 is embedded in the snap-fit ​​limit portion 311, the corner portion will limit the edge of the locking boss 120 to prevent the U-shaped swing arm 300 from automatically detaching from the locking boss 120 on the plug 100 under external vibration or impact, thereby improving the stability and reliability of the connector after the plug 100 and the socket 200 are electrically coupled.

[0029] A locking mechanism corresponding to the electromechanical interlocking mechanism is provided on the surface of the U-shaped swing arm 300 where the card interface 313 is located. The locking mechanism includes a first lug 320 and a second lug 330 relatively fixed on both sides of the U-shaped swing arm 300. The first lug 320 is provided with a through hole 321 for the first locking rod 140 to pass through. The U-shaped swing arm 300 swings after the plug connector 110 and the slot 210 are inserted into each other, so that the locking boss 120 is embedded in the locking groove 310 and mechanically locks the plug 100 and the socket 200. When the locking boss 120 slides to the clamping limit portion 311 of the locking groove 310, the second locking rod 150 abuts against the inner side surface of the second lug 330 and triggers the travel sensor 170. The driving member 160 controls the end of the first locking rod 140 to extend and embed into the through hole 321 of the first lug 320 to electrically lock the plug 100 and the socket 200. The inner side surface of the second lug 330 refers to a side of the second lug 330 close to the first lug 320. In this way, through the mechanical locking between the locking boss 120 and the locking groove 310 and the electrical locking between the first lug 320 and the first locking rod 140, the plug 100 and the socket 200 are electrically coupled, and the double locking of the plug 100 and the socket 200 is achieved, thereby improving the stability and anti-falling performance of the connector structure. In this embodiment, the second lug 330 is used to detect whether the U-shaped swing arm 300 is pressed down to the mechanical locking position; the first lug 320 is used to realize mechanical and electronic interlocking by mutual constraint with the first locking rod 140 controlled by the drive 160 to extend and retract after the plug 100 and the socket 200 of the connector are plugged in and the U-shaped swing arm 300 is pulled down to the position, and the drive 160 sends a state feedback signal at the same time. In addition, in this embodiment, the side of the first locking rod that matches the shell and the side of the second locking rod that matches the shell are explosion-proof surfaces.

[0030] Please combine Figure 1-4, the plug 100 is bent to form a first pipe 101 that matches the socket 200 and a second pipe 102 that is assembled with the charger side or the vehicle side and communicates with the first pipe 101, the plug connector 110 is fixed in the first pipe 101 at one end facing away from the second pipe 102, and a cable electrically connected to the plug connector 110 is arranged in the first pipe 101 and the second pipe 102, and the angle between the first pipe 101 and the second pipe 102 is greater than 90 degrees to avoid damage caused by the other parts of the plug 100 hitting the socket 200 when the plug connector 110 of the plug 100 is plugged into the slot 210 of the socket 200. The electromechanical interlocking mechanism is located in the area enclosed by the first pipe 101 and the second pipe 102, and the housing 130 is fixed to the connection between the first pipe 101 and the second pipe 102. A mounting port communicating with the inner cavity of the housing 130 is opened on the side of the housing 130 facing away from the plug 100, and a cover plate 131 is installed at the mounting port, and the cover plate 131 is screwed to the edge of the mounting port. When assembling the plug 100 , first open the cover 131 , install the driving member 160 into the inner cavity of the shell 130 and connect the driving member 160 and the first locking rod 140 , then cover the cover 131 on the installation opening of the shell 130 and lock it.

[0031] Furthermore, a gripping handle 103 is provided on the side of the second pipe 102 facing away from the housing 130. By providing the gripping handle 103, a gripping portion of the plug 100 is provided to reduce the difficulty of the operator gripping the plug 100. In this embodiment, the gripping handle 103 is provided on the side of the second pipe 102 facing away from the housing 130, which can avoid interference between the gripping handle 103 and the housing 130, and prevent the operator from being scratched by the housing 130 when holding the gripping handle 103.

[0032] Please combine Figure 1-4 as well as Figure 7In this embodiment, the end of the second locking rod 150 is a telescopic end, and the travel sensor 170 is triggered by the action of the telescopic end. Specifically, a groove 151 is provided on a side of the housing away from the first locking rod 140, and a limiting tube 152 is embedded in the groove 151. The second locking rod 150 passes through the limiting tube 152 and is slidably inserted into the groove 151. The end of the second locking rod 150 extends out of the groove 151, and the second locking rod 150 is provided with a convex portion 153 that cooperates with the inner surface of the limiting tube 152 to limit the travel of the second locking rod 150. The convex portion 153 is used to prevent the second locking rod from escaping from the groove 151. An elastic triggering member 154 is fixedly connected to one end of the second locking rod 150 located in the groove 151, and the travel sensor 170 is accommodated in the groove 151 and is located between the groove bottom of the groove 151 and the elastic triggering member 154. Preferably, the elastic triggering member 154 is a spring. When the plug 100 is not plugged into the socket 200 and the U-shaped swing arm 300 is not pulled down, the elastic trigger member 154 is in a naturally extended state; when the plug 100 is plugged into the socket 200 and the U-shaped swing arm 300 is pulled down, until the end of the second locking rod abuts against the inner wall of the second lug 330, the end of the second locking rod is squeezed, which will push the elastic trigger member 154 to move toward the stroke sensor 170 until the elastic trigger member 154 contacts the stroke sensor 170 and triggers the stroke sensor 170. During this process, the elastic trigger member 154 is compressed. When it is necessary to disconnect the plug 100 and the socket 200, lift the U-shaped swing arm 300, the constraint of the inner wall of the second lug 330 on the end of the second locking rod 150 is released, and the second locking rod is reset under the drive of the elastic trigger member 154.

[0033] Please combine Figure 1-3 as well as Figure 5-6The U-shaped swing arm 300 includes two arms arranged opposite to each other, and a handle 340 fixedly connected to one end of the two arms away from the slot 210, and the handle 340 provides a gripping portion for the operator to grasp the socket 200. The inner side surface of the arm (i.e., the side of the arm adjacent to the other arm) is provided with a locking groove 310, and the first lug 320 and the second lug 330 are respectively fixed to one arm. In this embodiment, the inner side surface of the arm is provided with a reinforcing rib to improve the strength of the arm, to prevent the U-shaped swing arm 300 from being overloaded and damaged during the process of pulling down and lifting, so as to extend the service life of the connector. Furthermore, in the present embodiment, the arm body is bent to form a first arm segment 350 fixedly connected to the handle 340 and a second arm segment 360 fixedly connected to the first arm segment 350 and pivotally connected to the edge of the slot 210, the angle between the first arm segment 350 and the second arm segment 360 is greater than 90 degrees, the locking groove 310 is opened in the second arm segment 360, and the card interface 313 faces away from the area surrounded by the first arm segment 350 and the second arm segment 360; the first lug 320 and the second lug 330 are fixed on a side of the second arm segment 360 facing away from the area surrounded by the first arm segment 350 and the second arm segment 360 and adjacent to the connection portion between the first arm segment 350 and the second arm segment 360. Preferably, the bending direction of the plug 100 is opposite to the bending direction of the arm body, that is, the area enclosed by the first pipe 101 and the second pipe 102 on the plug 100 faces away from the area enclosed by the first arm segment 350 and the second arm segment 360 on the U-shaped swing arm 300, so as to avoid interference between the first arm segment 350 and the second pipe 102, thereby reducing the difficulty of plugging and locking the plug 100 and the socket 200.

[0034] In one embodiment, the end of the second arm segment 360 is provided with an axis hole 370 that penetrates the inner side surface of the second arm segment 360 and the outer side surface of the second arm segment 360, and the socket 200 is provided with a swing shaft 220 at both side edges of the slot 210 for correspondingly penetrating into the axis hole 370 on the second arm segment 360. In this embodiment, the inner side surface of the second arm segment 360 refers to a side of the second arm segment 360 that is adjacent to another arm body, and the outer side surface of the second arm segment 360 refers to a side of the second arm segment 360 that is away from another arm body. By providing the axis hole 370 on the second arm segment 360 and arranging the swing shaft 220 on the socket 200, the pivot connection between the U-shaped swing arm 300 and the socket 200 is achieved.

[0035] During the plugging process of the connector, when the plug 100 of the connector is engaged with the socket 200, the U-shaped swing arm 300 is pressed down to the locking position. During the process of the locking boss 120 being inserted into the locking groove 310 via the card interface 313, the locking boss 120 moves toward the direction close to the slot 210 under the constraint of the inner wall of the locking groove 310 to assist in pushing the plug connector 110 of the connector into the slot 210 of the socket 200. When the plug 100 of the connector is fully inserted into the socket 200, the locking boss 120 enters the card-connection limiting portion 311 of the locking groove 310 and is held in the card-connection limiting portion 311 under the constraint of the angle portion, thereby realizing the mechanical locking of the connector. At the same time, the end of the second locking rod 150 on the plug 100 abuts against the inner wall of the second lug 330 of the U-shaped swing arm 300, and the second locking rod retracts under the squeezing of the inner wall of the second lug 330 and triggers the stroke sensor 170. The stroke sensor 170 feeds back the state signal of the mechanical locking of the swing arm to the controller of the whole vehicle or the charger, and then the controller of the whole vehicle or the charger controls the action of the driving member 160 to push the end of the first locking rod 140 to insert into the through hole 321 of the first lug 320, and then the driving member 160 feeds back the signal of the electronic lock locking the swing arm to the controller of the whole vehicle or the charger, and thus the electrical and mechanical connection of the connector is completed. That is to say, in the charger of this embodiment, after the plug 100 is completely engaged with the socket 200, the connector is powered on, and electrical locking is achieved at the same time as mechanical locking; after the connector is powered off, the driving member 160 loses power, the first locking rod 140 automatically jumps back, and the electrical locking of the connector is released, and the plug 100 can be manually unplugged to release the mechanical locking of the plug 100. In addition, in this embodiment, through the above-mentioned connector with dual locking function, when the operator connects the non-matching plug and socket due to operating errors, mechanical locking and electrical locking cannot be achieved, which can avoid connection errors and achieve the purpose of foolproofing.

[0036] When the plug 100 of the connector needs to be decoupled from the socket 200, the controller of the vehicle or the charger first determines whether the socket 200 end of the connector is completely powered off. When the socket 200 end of the connector is completely powered off, the controller of the vehicle or the charger controls the drive member 160 to move, so as to drive the end of the first locking rod 140 to retract and leave the through hole 321 of the first lug 320. At the same time, the drive member 160 feeds back the signal of the electronic lock unlocking swing arm to the controller of the vehicle or the charger. The operator lifts the U-shaped swing arm 300 to release the mechanical lock of the connector. When the second locking rod leaves the inner side of the second lug 330, the travel sensor 170 transmits the mechanical lock release signal to the controller of the vehicle or the charger. When the operator continues to lift the U-shaped swing arm 300, the U-shaped swing arm 300 will drive the plug 100 to be pulled out of the socket 200. Finally, the operator manually pulls out the plug 100 of the connector completely, thereby completing the electrical and mechanical decoupling of the connector.

[0037] The mining flameproof power charging connector 10 of the utility model is implemented, and the mechanical locking of the plug 100 and the socket 200 is realized by the cooperation of the locking boss 120 on the plug 100 and the locking groove 310 of the swing arm on the socket 200. The end of the first locking rod 140 is controlled by the driving member 160 to extend and embed into the through hole 321 of the first lug 320, so as to realize the electrical locking of the plug 100 and the socket 200. Through the double locking, the stability of the connection between the plug 100 and the socket 200 of the connector is improved, and it is ensured that the plug 100 and the socket 200 are always in a locked state when the plug 100 and the socket 200 are powered on, which can prevent the operator from lifting the swing arm due to misoperation, thereby preventing the plug 100 and the socket 200 from being disconnected, thereby improving the release performance of the connector.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A flameproof power charging connector for mining, comprising a plug assembled on the charger side or the vehicle side through a cable and a socket assembled on the equipment side and plugged with the plug, the plug is provided with a plug connector, the socket is provided with a slot for inserting the plug connector, and the mating surfaces of the plug connector and the slot are respectively flameproof surfaces; characterized in that, Two opposite sides of the plug are each provided with a locking boss at a position adjacent to the plug connector, and a side of the locking boss facing away from the plug connector is provided with an electromechanical interlocking mechanism fixed to the plug, the electromechanical interlocking mechanism comprising a shell fixed to the outer surface of the plug, a first locking rod and a second locking rod arranged at two opposite outer sides of the shell, a driving member accommodated in the inner cavity of the shell and electrically connected to the vehicle or charger controller to drive the end of the first locking rod to extend or retract, and a travel sensor installed on the second locking rod and electrically connected to the vehicle or charger controller; The socket is provided with a U-shaped swing arm pivotally connected to the edge of the slot on the side where the slot is located, and two locking grooves corresponding to the two locking bosses are provided on two opposite inner side walls of the U-shaped swing arm, and the locking groove includes a clamping limit portion and a guide portion connected to the clamping limit portion and extending along the swinging direction of the U-shaped swing arm, and the guide portion penetrates the side of the U-shaped swing arm to form a clamping interface, and a locking mechanism corresponding to the electromechanical interlocking mechanism is provided on the U-shaped swing arm on the surface where the clamping interface is located, and the locking mechanism includes a first lug and a second lug relatively fixed on both sides of the U-shaped swing arm, and a through hole for the first locking rod to pass through is opened on the first lug; The U-shaped swing arm swings after the plug connector is inserted into the slot, so that the locking boss is embedded in the locking groove and mechanically locks the plug and the socket. When the locking boss slides to the clamping limit portion of the locking groove, the second locking rod abuts against the inner side surface of the second lug and triggers the travel sensor. The driving member controls the end of the first locking rod to extend and embed into the through-hole of the first lug to electrically lock the plug and the socket.

2. The flameproof power charging connector for mining according to claim 1, characterized in that: A groove is provided on a side surface of the shell away from the first locking rod, and a limiting tube is embedded in the groove. The second locking rod passes through the limiting tube and is slidably inserted into the groove. The end of the second locking rod extends out of the groove and the second locking rod is provided with a convex portion which cooperates with the inner surface of the limiting tube to limit the stroke of the second locking rod. An elastic trigger component is fixedly connected to one end of the second locking rod located in the groove, and the stroke sensor is accommodated in the groove and is located between the bottom of the groove and the elastic trigger component.

3. The flameproof power charging connector for mining according to claim 1, characterized in that: The plug is bent to form a first pipe that matches the socket and a second pipe that is assembled with the charger side or the vehicle side and connected to the first pipe. The plug connector is fixed in the first pipe at one end facing away from the second pipe. Cables electrically connected to the plug connector are arranged in the first pipe and the second pipe. The angle between the first pipe and the second pipe is greater than 90 degrees. The electromechanical interlocking mechanism is located in the area enclosed by the first pipe and the second pipe, and the shell is fixed to the connecting portion of the first pipe and the second pipe.

4. The flameproof power charging connector for mining according to claim 3, characterized in that: A gripping handle is provided on the side of the second pipe facing away from the housing.

5. The flameproof power charging connector for mining according to claim 3, characterized in that: The U-shaped swing arm includes two arm bodies arranged opposite to each other, a handle fixedly connected to one end of the two arm bodies away from the slot, the inner side surface of the arm body is provided with the locking groove, and the first lug and the second lug are respectively fixed on one arm body.

6. The flameproof power charging connector for mining according to claim 5, characterized in that: The arm body is bent to form a first arm segment fixedly connected to the handle and a second arm segment fixedly connected to the first arm segment and pivotally connected to the edge of the slot, the angle between the first arm segment and the second arm segment is greater than 90 degrees, the locking groove is opened in the second arm segment, and the card interface faces away from the area surrounded by the first arm segment and the second arm segment; the first lug and the second lug are fixed on a side of the second arm segment facing away from the area surrounded by the first arm segment and the second arm segment and adjacent to the connecting portion between the first arm segment and the second arm segment.

7. The flameproof power charging connector for mining according to claim 6, characterized in that: The bending direction of the plug is opposite to the bending direction of the arm body.

8. The flameproof power charging connector for mining according to claim 6, characterized in that: An axial hole penetrating the inner side and the outer side of the second arm segment is formed at the end of the second arm segment, and a swing shaft corresponding to the axial hole on the second arm segment is formed on both side edges of the slot.

9. The flameproof power charging connector for mining according to claim 1, characterized in that: A mounting opening communicating with the inner cavity of the shell is provided on one side of the shell facing away from the plug. A cover plate is installed at the mounting opening, and the cover plate is screwed to the edge of the mounting opening.

10. The flameproof power charging connector for mining according to claim 1, characterized in that: The driving member is an electric motor.

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