A pressing plate throwing and retracting device, a pressing plate throwing and retracting mechanism and a pressing plate throwing and retracting control system

Abstract

The present invention discloses a pressure plate throw-in and throw-out device, a pressure plate automatic throw-in and throw-out mechanism, and a pressure plate throw-in and throw-out control system. In the pressure plate throw-in and throw-out device, an electromagnet is connected to the output shaft of the throw-in and throw-out drive motor through a transmission assembly. In the pressure plate throw-in and throw-out mechanism, the throw-in and throw-out device moving drive unit includes a moving drive motor, a transmission synchronous belt, and a moving pair; the transmission synchronous belt forms an I-shaped path in the moving plane of the pressure plate throw-in and throw-out device, and the rotation of the moving drive motor drives the transmission synchronous belt to rotate, thereby being able to drive the pressure plate throw-in and throw-out device to move to a specified position in the plane. The pressure plate throw-in and throw-out control system includes a data processor and an action controller. The data processor receives an external pressure plate operation instruction and converts it into the number of revolutions and direction of the drive motor, and then controls the moving drive motor through the action controller so that the pressure plate throw-in and throw-out device moves to the specified pressure plate position, thereby controlling the power-on of the throw-in and throw-out drive motor and the electromagnet to complete the pressure plate throw-in and throw-out operation. The present invention can be applied to the automatic throw-in and throw-out of the pressure plate in relay protection, and provides a basis for unmanned operation of secondary equipment.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substation operation and maintenance, in particular to a pressure plate throwing and withdrawing device, a pressure plate throwing and withdrawing mechanism and a pressure plate throwing and withdrawing control system. Background Art

[0002] At present, there are two ways to realize the switching of relay protection pressure plates: electric pressure plate switching and traditional soft and hard pressure plate switching.

[0003] First, the electric pressure plate is a new type of pressure plate insertion and retraction method. According to the insertion and retraction instructions, the motor or push-pull electromagnet is used as the power source to drive the pressure plate to be inserted and retracted through a specific mechanical structure. Its characteristic is that each pressure plate is equipped with a motor or electromagnet. If there are a large number of pressure plates in the panel cabinet, its production cost will increase greatly, and it will also bring extra weight to the cabinet body, and reduce the reliability of the electric pressure plate insertion and retraction control system, which is prone to adverse situations such as malfunction or failure.

[0004] Second, traditional hard pressure plates are widely used in various types of relay protection cabinets. They are the most common type of pressure plates. Their working environment is generally indoors. However, if hard pressure plates are used in outdoor cabinets, because outdoor cabinets are placed in relatively harsh conditions all year round, operating hard pressure plates under rainy, snowy, windy and sandy weather conditions can easily cause dangerous accidents such as leakage and device damage. In the traditional definition, soft pressure plate activation and deactivation refers to the activation and deactivation of a certain protection or control function in the software system, which is generally controlled by changing the software control word of the microcomputer protection. Soft pressure plates cannot provide a clearly visible disconnection point, nor can they provide double confirmation position feedback, which violates the safety regulations that maintenance circuits must have a clearly visible disconnection point. Summary of the invention

[0005] The purpose of the present invention is to provide a pressure plate throwing and withdrawing device, a pressure plate automatic throwing and withdrawing mechanism and a pressure plate throwing and withdrawing control system, which are suitable for the automatic throwing and withdrawing of pressure plates in relay protection, and further can realize the throwing and withdrawing pressure plate operation in a closed panel cabinet, providing a basis for unmanned operation of secondary equipment.

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

[0007] On the one hand, the present invention provides a pressure plate ejector, comprising a base, an ejector drive motor, an electromagnet and a transmission assembly, wherein the ejector drive motor is mounted on the base, and the electromagnet is connected to the output shaft of the ejector drive motor through the transmission assembly; the base comprises a housing extending to the outer periphery of the motor output shaft, and a guide rail groove is provided on the housing;

[0008] The transmission assembly comprises a piston, one end of which is transmission-connected to the motor output shaft and the other end of which is fixedly connected to the electromagnet; a guide pin which can move along the guide groove is fixedly arranged on the piston, and the piston is slidably connected to the housing via the guide pin.

[0009] When the pressure plate ejection and retraction device of the present invention is used, the rotation angle of the output shaft of the ejection and retraction drive motor can be controlled by inputting a control signal to the ejection and retraction drive motor. When the output shaft rotates, the piston can be driven to rotate or move axially forward and backward under the restriction of the specific track of the guide pin on the shell, and then the electromagnet at the end can be driven to rotate or move forward and backward. When the electromagnet moves to a specified position, the electromagnet can be controlled to be energized to perform the ejection and retraction operation on the pressure plate at the corresponding position.

[0010] Optionally, the transmission assembly further comprises a threaded rod having an external thread; one end of the threaded rod is fixedly connected to an output shaft of the insertion and retraction drive motor;

[0011] The piston is hollow and open at one end. The inner side of the piston is provided with a threaded pin that matches the outer thread of the threaded rod, so that the rotation of the threaded rod can drive the piston to rotate or move axially in a state where the circumferential movement is restricted. That is, the output shaft of the throw-in-and-retract drive motor forms a worm transmission structure through the threaded rod and the piston, so that the rotation of the motor output shaft can be converted into the axial linear movement of the piston or follow the rotation in a state where the outer circumference is not restricted.

[0012] Optionally, the threaded rod, the piston and the output shaft of the throwing and retracting driving motor are coaxially arranged, and the output shaft of the throwing and retracting driving motor is embedded and fixed in one end of the threaded rod;

[0013] The portion of the housing extending to the outer periphery of the output shaft of the casting and retraction drive motor is cylindrical, the axial length of the cylindrical extension portion is greater than the length of the output shaft of the casting and retraction drive motor, and the guide rail groove is located on the cylindrical extension portion;

[0014] The guide rail groove is U-shaped.

[0015] Since the guide pin end is limited in the guide rail groove, when the piston is driven by the output shaft of the drive motor, the guide pin can only move along a specific trajectory under the limitation of the guide rail groove, that is, to realize the linear motion or rotational motion of the piston, thereby driving the electromagnet to move forward and backward or rotate.

[0016] The U-shaped guide groove can realize a linear-rotation-linear piston action combination, which can be applied to the insertion and withdrawal of the plug-in pressure plate. After the electromagnet is energized to adsorb the pressure plate, the pressure plate is first pulled out by a retracting linear motion, and then the pressure plate is rotated by rotation, and then the rotated pressure plate is pushed in by a pushing linear motion, thus completing the insertion and withdrawal operation of the plug-in pressure plate. In view of other linear-rotation combination forms that may exist in the insertion and withdrawal operation of the pressure plate, the shape of the guide groove can be set to other shapes as needed.

[0017] Optionally, the electromagnet is fixedly connected to the piston end through an electromagnet bracket; the electromagnet bracket is hollow, the electromagnet is clamped to one end inside the electromagnet bracket, and the other end of the electromagnet bracket is fixedly sleeved on the outer periphery of the piston end.

[0018] In a second aspect, the present invention proposes a pressure plate ejection and retraction mechanism based on the pressure plate ejection and retraction device described in the first aspect, comprising a frame, a pressure plate ejection and retraction device, and an ejection and retraction device moving drive unit; the ejection and retraction device moving drive unit comprises a moving drive motor, a transmission synchronous belt, and a moving pair;

[0019] There are at least two mobile drive motors, which are respectively installed at the two side ends of the frame or the two ends of the same side, and the output shafts thereof are installed with output synchronous wheels. Among the four corners of the frame, the corners where the mobile drive motors are not installed are respectively installed with frame synchronous wheels;

[0020] The frame is provided with at least one linear transverse guide rail; the moving pair comprises mounting seats arranged opposite to each other in the upper and lower parts, at least one linear longitudinal guide rail is fixedly connected between the two mounting seats, at least one mounting seat is provided with a transverse slider adapted to the linear transverse guide rail; the moving pair is slidably connected to the linear transverse guide rail through the transverse slider; the left and right sides of the two mounting seats are respectively provided with moving pair synchronous wheels;

[0021] A base cushion column is provided on one side of the base of the pressure plate ejector, and a longitudinal slide block adapted to the linear longitudinal guide rail is provided on at least one side of the base of the pressure plate ejector, and the base of the pressure plate ejector is slidably connected to the linear longitudinal guide rail through the longitudinal slide block;

[0022] The transmission synchronous belt is rollingly connected to the output synchronous wheel, the moving pair synchronous wheel, and the frame synchronous wheel in the transmission path, and is fixedly connected to the base cushion column to form a transmission belt loop, so that the rotation of the output shafts of at least two moving drive motors can drive the moving pair to slide along the linear horizontal guide rail, or can drive the pressure plate ejector to slide along the linear longitudinal guide rail.

[0023] The synchronization mentioned above only refers to the same rotation speed, and the direction changes according to the direction of rotation of at least two mobile drive motors.

[0024] Optionally, the transmission synchronous belt is connected with the output synchronous wheel, the movable auxiliary synchronous wheel, the frame synchronous wheel, and the base cushion column within the moving plane of the pressure plate throw-in and retractor to form an I-shaped loop.

[0025] Optionally, the number of the mobile drive motors is two, which are respectively installed at the upper and lower ends of one side of the frame;

[0026] Two linear horizontal guide rails are arranged in parallel on the frame, and a horizontal slider is arranged on the top of the two mounting seats of the moving pair respectively, and each mounting seat is slidably connected to a linear horizontal guide rail through a corresponding horizontal slider;

[0027] The moving pair comprises two mutually parallel linear longitudinal guide rails, and corresponding longitudinal sliding blocks are respectively arranged on both sides of the base of the pressure plate ejector for sliding connection with the linear longitudinal guide rails.

[0028] Optionally, the transmission synchronous belt passes through the upper output synchronous wheel, the upper mounting seat of the movable pair, and then sequentially bypasses the upper frame synchronous wheel, an upper movable pair synchronous wheel toward one side of the frame synchronous wheel, a lower movable pair synchronous wheel, the lower frame synchronous wheel, and then passes through the lower mounting seat of the movable pair, and then sequentially bypasses the lower output synchronous wheel, another lower movable pair synchronous wheel, another upper movable pair synchronous wheel, and finally reaches the upper output synchronous wheel, forming an I-shaped transmission loop;

[0029] The transmission synchronous belt is fixedly connected to the base column between the upper moving pair synchronous wheel and the lower moving pair synchronous wheel on the left / right side of the moving pair. That is, only one side of the base of the pressure plate ejector is connected to the transmission synchronous belt, so that the up and down movement of the pressure plate ejector is driven by only one side of the transmission synchronous belt. Therefore, the up and down movement and left and right movement of the pressure plate ejector in the moving plane will not interfere with each other.

[0030] Optionally, a pressure plate mounting panel is further provided on the frame, a moving plane of the pressure plate ejector is parallel to the pressure plate mounting panel, and one end of the pressure plate ejector mounting electromagnet faces the pressure plate mounting panel.

[0031] When the pressure plate insertion and retraction mechanism of the present invention is used, the directions of different driving motors can be controlled to be the same or different during synchronous rotation, and the rotation angle can be coordinated to realize the movement of the pressure plate insertion and retraction device in the horizontal and vertical directions, that is, the change of the pressure plate insertion and retraction device to any position within the moving plane can be realized, thereby adapting to the insertion and retraction of pressure plates at different positions on the pressure plate installation panel.

[0032] In a third aspect, the present invention further proposes a pressure plate insertion and withdrawal control system based on the pressure plate insertion and withdrawal mechanism described in the second aspect, comprising a pressure plate insertion and withdrawal mechanism, a data processor and a motion controller; in the pressure plate insertion and withdrawal mechanism, the pressure plate insertion and withdrawal device further comprises a motor control input terminal and an electromagnetic control input terminal:

[0033] The data processor receives an external pressure plate throwing and retracting control instruction, determines the target position of the pressure plate throwing and retracting device according to the pressure plate throwing and retracting control instruction, and then calculates the rotation direction and number of rotations of each mobile drive motor according to the target position of the pressure plate throwing and retracting device;

[0034] The motion controller receives the rotation direction and number of revolutions of each mobile drive motor, controls the rotation of the corresponding mobile drive motor, and moves the pressure plate ejector to the target position; in response to the pressure plate ejector moving to the target position, controls the rotation of the ejector drive motor through the motor control input end, controls the power supply of the electromagnet through the electromagnetic control input end, and executes the pressure plate ejection and retraction operation; in response to the end of the pressure plate ejection and retraction operation, controls the power supply of the electromagnet.

[0035] Optionally, the pressure plate throwing and retracting control system also includes a position sensor and a visual sensor. The visual sensor monitors the image of the pressure plate throwing and retracting execution process of the pressure plate throwing and retracting device and transmits it to the data processor; position sensors are respectively provided at the pressure plate installation positions, and the position sensors monitor the throwing and retracting status of the pressure plate at the current position and transmit it to the data processor. The data processor can determine whether the pressure plate throwing and retracting operation is successful based on the signals of the position sensor and the visual sensor, and thus exit the control in response to a successful operation, or control the pressure plate throwing and retracting operation again through the action controller in response to an unsuccessful operation. That is, a closed loop of operation control is realized. Thereafter, the pressure plate throwing and retracting control system of the present invention can also upload the status data and video image data involved in the process to the cloud, so as to realize remote control and online monitoring functions.

[0036] To simplify the control logic, the initial position of the ejector is the same for each push plate ejection and retraction operation, and the ejector is controlled to return to the initial position after the operation is completed.

[0037] Beneficial Effects

[0038] The pressing plate throwing and retracting device of the present invention can realize the control of the throwing and retracting driving motor through an external control signal, thereby realizing the throwing and retracting operation of the pressing plate through the movement or rotation control of the electromagnet.

[0039] The pressure plate insertion and retraction mechanism provides an effective controllable movement mode of the pressure plate insertion and retraction device, so that the pressure plate insertion and retraction device can realize lateral and longitudinal movement in a moving plane parallel to the pressure plate installation plane, thereby enabling the insertion and retraction operations of multiple pressure plates in the pressure plate installation plane.

[0040] The pressure plate insertion and withdrawal control system provides a reliable solution for the automatic insertion and withdrawal of the pressure plate, which can realize the automatic control of the insertion and withdrawal of the pressure plate in the closed screen cabinet, and has a great significance for improving the protective performance of the outdoor cabinet. At the same time, in conjunction with the sensor system, the present invention can transform the hard pressure plate from on-site insertion and withdrawal and manual inspection to remote-controlled insertion and withdrawal and automatic inspection, and from distributed management to centralized management, effectively reducing the workload and operational risks of operation and maintenance personnel, reducing costs and increasing efficiency.

[0041] In addition, the present invention not only does not affect the original manual insertion and withdrawal method of the pressure plate, but also retains the inherent advantage of the hard pressure plate with a clearly visible disconnection point, and can provide the double confirmation insertion and withdrawal position feedback required by relevant safety regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a pressure plate automatic throwing and retracting device in one embodiment of the present invention;

[0043] Figure 2 It is a structural schematic diagram of a throw-in / out device unit in an embodiment of the present invention;

[0044] Figure 3It is a cross-sectional schematic diagram of an insertion and withdrawal device unit in one embodiment of the present invention;

[0045] Figure 4 It is a structural schematic diagram of a mobile sub-unit in an embodiment of the present invention;

[0046] Figure 5 It is a structural schematic diagram of a frame unit in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following is further described in conjunction with the accompanying drawings and specific embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention.

[0048] In the description of the patent of the present invention, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the listed elements but also other elements not explicitly listed.

[0049] In the description of the patent of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the patent of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the patent of the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The inventive concept of the present invention is to use artificial intelligence to realize the operation of "machine replacing human" to perform the operation of inserting and retracting the pressure plate, thereby improving the protection level of the relay protection cabinet. In view of the "machine replacing human" operation of inserting and retracting the pressure plate, a pressure plate inserting and retracting mechanism based on worm guide rail transmission is proposed, thereby realizing the operation of inserting and retracting the pressure plate in a closed panel cabinet.

[0052] Example 1

[0053] refer to Figures 1 to 3As shown, this embodiment is a pressure plate ejector 1, comprising a base 11, an ejector drive motor 12, an electromagnet 17 and a transmission assembly, wherein the ejector drive motor is mounted on the base 11, and the electromagnet 17 is connected to the output shaft of the ejector drive motor 12 through the transmission assembly; the base 11 comprises a housing extending to the outer periphery of the motor output shaft, and a guide rail groove is provided on the housing;

[0054] The transmission assembly includes a piston 14, one end of which is rotatably connected to the output shaft of the casting and retraction driving motor, and the other end is fixedly connected to the electromagnet 17. A guide pin 16 that can move along the guide groove is fixedly provided on the piston 14, and the piston 14 is slidably connected to the shell through the guide pin 16.

[0055] When the pressure plate ejector of this embodiment is used, in order to realize the control input, the pressure plate ejector can be provided with a motor control input terminal and an electromagnetic control input terminal as an external command interface, and the rotation angle of the ejector drive motor output shaft can be controlled by inputting the ejector drive motor control signal. When the output shaft rotates, the piston can be driven to move under the restriction of the outer shell guide groove, and then the electromagnet at the end can be driven to move linearly or rotate, so as to achieve the purpose of ejecting and retracting the pressure plate.

[0056] Example 1-1

[0057] Based on Example 1, in this embodiment:

[0058] The transmission assembly also includes a threaded rod 13 with an external thread, one end of which is fixedly connected to the output shaft of the casting and retraction drive motor 12; the piston 14 is hollow and one end is open, and the inner side of the piston 14 is provided with a threaded pin 15 that matches the external thread of the threaded rod, so that the rotation of the threaded rod 13 can drive the piston 14 to rotate or move axially in a state where the circumferential movement is restricted. The output shaft of the casting and retraction drive motor forms a worm transmission structure through the threaded rod and the piston, so that the rotation of the motor output shaft can be converted into the axial linear movement of the piston or follow the rotation in a state where the outer periphery is not restricted.

[0059] The threaded rod 13 , the piston 14 and the output shaft of the throwing and retracting driving motor are coaxially arranged, and the output shaft of the throwing and retracting driving motor is embedded and fixed in one end of the threaded rod 13 .

[0060] The portion of the housing extending to the periphery of the output shaft of the casting and retraction driving motor is cylindrical, the axial length of the cylindrical extension portion is greater than the length of the output shaft of the casting and retraction driving motor, and the guide rail groove is located on the cylindrical extension portion.

[0061] The guide groove of this embodiment is set to be U-shaped. The U-shaped guide groove can realize a linear-rotational-linear piston action combination, which can be suitable for the insertion and withdrawal of the plug-in pressure plate. After the electromagnet is energized to adsorb the pressure plate, the pressure plate is first pulled out through a retracting linear motion, and then the pressure plate is rotated by rotation, and then the rotated pressure plate is pushed in through a pushing-out linear motion, thereby completing the insertion and withdrawal operation of the plug-in pressure plate.

[0062] The threaded pin 15 can be modified by grinding the dome at the front end of the screw, so that the friction of the worm drive between the piston and the threaded rod is reduced. Of course, in other embodiments, other structures can also be used, such as using a stainless steel pin or directly welding a hemispherical body that can match the threaded rod 13 to the inner hole of the piston 14, which is not limited to this embodiment.

[0063] The electromagnet 17 is fixedly connected to the end of the piston 14 through the electromagnet bracket 18; the electromagnet bracket 18 is hollow, the electromagnet is clamped to one end of the inner part of the electromagnet bracket, and the other end of the electromagnet bracket is fixedly sleeved on the outer periphery of the piston end. The function of the electromagnet bracket 18 is to fix and support the electromagnet 17 and guide the pressure plate to contact the electromagnet 17.

[0064] When the pressure plate ejector of this embodiment is used, the output shaft of the ejector drive motor 12 is rigidly connected to the threaded rod 13. When working, the ejector drive motor 12 rotates to drive the threaded rod 13 to rotate at the same angle as the axis, thereby transmitting power to the piston. Since the guide pin 16 fixedly connected to the piston can only move in the guide groove, the piston 14 can only move according to the preset trajectory corresponding to the guide groove. By adjusting the thread pitch, thread radius, shape and length of the guide groove of the ejector base 11 of the threaded rod 13, the rotation angle, forward and backward range of the piston 14, that is, the preset trajectory, can be set. In actual operation, the functions that can be realized by the above-mentioned design of the pressure plate ejector 1 include completing the forward, rotation and backward operations of the electromagnet 17 and the electromagnet bracket 18 on the axis.

[0065] Example 2

[0066] Based on Example 1, combined Figures 1 to 5 ,in particular Figure 1 This embodiment is a pressure plate ejection and retraction mechanism based on the pressure plate ejection and retraction device in embodiment 1, including a frame 3, a pressure plate ejection and retraction device 1 and an ejection and retraction device moving drive unit; the pressure plate ejection and retraction device 1 can be any implementation method in embodiment 1; the ejection and retraction device moving drive unit includes a moving drive motor, a transmission synchronous belt 4 and a moving pair 2;

[0067] refer to Figure 5 As shown, there are at least two mobile drive motors, which are respectively installed at the two side ends or the two ends of the same side of the frame 3, and the output shafts thereof are installed with output synchronous wheels 36. Among the four corners of the frame, the corners where the mobile drive motors are not installed are respectively installed with frame synchronous wheels 37;

[0068] At least one straight horizontal guide rail 35 is provided on the frame; Figure 4 As shown, the moving pair 2 includes mounting seats 22 arranged opposite to each other in the upper and lower parts, at least one straight longitudinal guide rail 23 is fixedly connected between the two mounting seats, and at least one mounting seat is provided with a transverse slider 21 adapted to the linear transverse guide rail 35; the moving pair 2 is slidably connected to the linear transverse guide rail 35 through the transverse slider 21; and the left and right sides of the two mounting seats are respectively provided with moving pair synchronous wheels 24;

[0069] A base cushion column 101 is provided on one side of the base 11 of the pressure plate ejector 1, and a longitudinal slider 19 adapted to the linear longitudinal guide rail 23 is provided on at least one side of the base of the pressure plate ejector 1. The base of the pressure plate ejector 1 is slidably connected to the linear longitudinal guide rail through the longitudinal slider 19; there are two base cushion columns arranged in parallel, and a cushion column reinforcing rib is connected between the ends of the two base cushion columns.

[0070] The transmission synchronous belt 4 is rollingly connected to the output synchronous wheel 36, the movable pair synchronous wheel 24, and the frame synchronous wheel 37 in the transmission path, and is fixedly connected to the base cushion column 101 to form a transmission belt loop, so that the rotation of the output shafts of at least two movable drive motors can drive the movable pair to slide along the linear horizontal guide rail, or can drive the pressure plate ejector to slide along the linear longitudinal guide rail.

[0071] Since the base column of the pressure plate ejector is fixedly connected to the transmission synchronous belt, the position of the connection point between the transmission synchronous belt and the base column is limited within the length range of the linear longitudinal guide in the moving pair. Therefore, by adjusting the rotation direction of the moving drive motor to be the same or different and the timing of switching, the pressure plate ejector can be moved to any position in the moving plane. The corresponding rules between the specific position and the motor control method can be discovered through multiple experiments.

[0072] Example 2-1

[0073] Based on Example 2, in this embodiment: the transmission synchronous belt 4 is connected with the output synchronous wheel, the movable auxiliary synchronous wheel, the frame synchronous wheel, and the base cushion column within the moving plane of the pressure plate throw-in and retract device 1 to form an I-shaped loop.

[0074] refer to Figure 1 As shown, the frame includes a front frame 31 and a rear frame 32, which are connected by a side beam 34. The front frame provides a movable installation plane for the pressure plate ejector, and the rear frame can be used to install the pressure plate installation panel.

[0075] On the front frame, there are two mobile drive motors 36, which are respectively installed at the upper and lower ends of one side of the frame 3;

[0076] Two linear horizontal guide rails 35 are arranged in parallel on the frame 3, and a horizontal slider 21 is arranged on the top of the two mounting seats 22 of the moving pair 2, and each mounting seat 22 is slidably connected to the linear horizontal guide rail 35 through the corresponding horizontal slider 21;

[0077] The moving pair 2 comprises two linear longitudinal guide rails 23 parallel to each other. Corresponding longitudinal sliding blocks 19 are respectively provided on both sides of the base of the pressure plate ejector 1 to be slidably connected to the linear longitudinal guide rails 23 .

[0078] like Figure 1 The transmission synchronous belt 4 passes through the upper output synchronous wheel, the upper mounting seat of the moving pair, and then passes through the upper frame synchronous wheel, an upper moving pair synchronous wheel that has passed through one side of the frame synchronous wheel, a lower moving pair synchronous wheel, the lower frame synchronous wheel, and then passes through the lower mounting seat of the moving pair, and then passes through the lower output synchronous wheel, another lower moving pair synchronous wheel, another upper moving pair synchronous wheel, and then reaches the upper output synchronous wheel, forming an I-shaped transmission loop;

[0079] The transmission synchronous belt is fixedly connected to the base column between the upper moving pair synchronous wheel and the lower moving pair synchronous wheel on the left / right side of the moving pair. That is, only one side of the base of the pressure plate ejector is connected to the transmission synchronous belt, so that the up and down movement of the pressure plate ejector is driven by only one side of the transmission synchronous belt. Therefore, the up and down movement and left and right movement of the pressure plate ejector in the moving plane will not interfere with each other.

[0080] The moving plane of the pressure plate ejector is parallel to the pressure plate mounting panel. Within the movable range, one end of the pressure plate ejector mounting electromagnet faces the pressure plate mounting panel.

[0081] When the pressure plate insertion and retraction mechanism of this embodiment is used, the two mobile drive motors 36 can be controlled to rotate in the same direction and in different directions within a period of time, so as to move the insertion and retraction device unit 1 to any specified position in the plane, thereby adapting to the insertion and retraction of pressure plates at different positions on the pressure plate installation panel.

[0082] The pressing plate of the pressing plate ejector of the present invention can be made of materials such as stainless steel that can interact with the electromagnet, and is a plug-in pressing plate. In this application environment, the implementation process of the pressing plate ejection and ejection of the present embodiment can be: first, through the output power of two mobile drive motors 36, the ejection and ejection device unit 1 is driven by the transmission belt to move on the linear horizontal guide rail 35 and the linear longitudinal guide rail 23 to the position directly opposite to the pressing plate to be ejected and ejected. Then, the ejection and ejection drive motor 12 rotates to drive the electromagnet 17 and the electromagnet bracket 18 at the top of the ejection and ejection device unit 1 that are in contact with the pressing plate to move forward. When the electromagnet 17 moves to the upper cover plate of the plug-in pressing plate to be ejected and ejected, the electromagnet 17 is powered on to adsorb the stainless steel cover plate of the pressing plate. At this time, the ejection and ejection drive motor 12 continues to rotate, and the electromagnet 17 retreats to pull the pressing plate backward, and the rotation and forward pushing action of the pressing plate are completed through the limit of the guide pin 16 in the preset guide groove. At this time, the electromagnet 17 can be controlled to be powered off, and the pressing plate cover plate loses connection with the electromagnet 17, completing the change of the entire pressing plate state. Finally, the two mobile drive motors 36 drive the throw-in and throw-out device 1 to return to the initial position, completing the entire automatic throw-in and throw-out operation of the pressure plate.

[0083] In the non-action state, the throw-in / out device 1 can always be located at a certain initial position in the frame 3. In principle, the initial position setting can be set so as not to affect the position of the manual throw-in / out pressure plate. For example, the initial position can be set to the lower left corner of the frame. This also simplifies the workload of calculating the motor speed and direction each time the control is performed to a certain extent.

[0084] Example 3

[0085] In order to cooperate with the pressure plate throwing and retracting device and the pressure plate throwing and retracting mechanism of the first and second embodiments to efficiently complete the throwing and retracting operation, this embodiment is a pressure plate throwing and retracting control system, including a pressure plate throwing and retracting mechanism, a data processor and a motion controller;

[0086] The pressure plate insertion and withdrawal mechanism is any implementation of the pressure plate insertion and withdrawal mechanism in Example 2, and the pressure plate insertion and withdrawal device also includes a motor control input terminal and an electromagnetic control input terminal:

[0087] The data processor receives an external pressure plate throwing and retracting control instruction, determines the target position of the pressure plate throwing and retracting device according to the pressure plate throwing and retracting control instruction, and then calculates the rotation direction and number of rotations of each mobile drive motor according to the target position of the pressure plate throwing and retracting device;

[0088] The motion controller receives the rotation direction and number of revolutions of each mobile drive motor, controls the rotation of the corresponding mobile drive motor, and moves the pressure plate ejector to the target position; in response to the pressure plate ejector moving to the target position, controls the rotation of the ejector drive motor through the motor control input end, controls the power supply of the electromagnet through the electromagnetic control input end, and executes the pressure plate ejection and retraction operation; in response to the end of the pressure plate ejection and retraction operation, controls the power supply of the electromagnet.

[0089] Example 3-1

[0090] On the basis of Example 3, in order to realize closed-loop control, in this embodiment, the pressure plate insertion and withdrawal control system also includes a position sensor and a visual sensor. The visual sensor monitors the pressure plate insertion and withdrawal execution process image of the pressure plate insertion and withdrawal device and transmits it to the data processor; position sensors are respectively provided at the pressure plate installation positions, and the position sensors monitor the insertion and withdrawal status of the pressure plate at the current position and transmit it to the data processor. The data processor can determine whether the pressure plate insertion and withdrawal operation is successful based on the signals of the position sensor and the visual sensor, and thus exit the control in response to a successful operation, or control the pressure plate insertion and withdrawal operation to be executed again through the action controller in response to an unsuccessful operation. That is, a closed loop of operation control is realized. Thereafter, the pressure plate insertion and withdrawal control system of the present invention can also upload the status data and video image data involved in the process to the cloud, so as to realize remote remote control and online monitoring functions.

[0091] The visual sensor can use a camera. After acquiring the monitoring image, the data processor can use the existing image recognition technology to detect and identify the execution of the entire set of pressure plate thrusting and retracting actions. The position sensor detects the current state of the pressure plate and transmits the signal back to the processor for data sorting, thereby completing the operation control closed loop.

[0092] The pressure plate insertion and retraction control system can eventually upload the sorted status data and video image data to the cloud to realize remote control, online monitoring, etc.

[0093] In this example, the control system will coordinately control the throw-in / out drive motor 12 to rotate clockwise and counterclockwise, the electromagnet 17 to turn on and off, and the movement drive motor 36 to rotate clockwise and counterclockwise.

[0094] The pressure plate insertion and withdrawal control mechanism or pressure plate insertion and withdrawal control system of the present invention can adopt a modular design. The entire pressure plate insertion and withdrawal mechanism serves as a device that is adapted to the size of existing screen cabinets and has the advantages of being able to be quickly installed and ready to use, thereby conveniently and quickly completing the transformation from traditional pressure plates to intelligent automatic pressure plates.

[0095] In summary, the present invention can realize the operation of automatically throwing and retracting the pressure plate in the closed panel cabinet, which greatly improves the protective performance of the outdoor cabinet. At the same time, the present invention transforms the hard pressure plate from on-site throwing and retracting and manual inspection to remote control throwing and retracting and automatic inspection, and from distributed management to centralized management, effectively reducing the workload and operational risks of operation and maintenance personnel, reducing costs and increasing efficiency. Finally, the present invention actively responds to the requirement of the integrated control strategy that all equipment in the substation is controllable and measurable, makes full use of existing technology to promote the advancement of the pressure plate system, and provides support for the development of smart grids.

[0096] The above description is only a preferred embodiment of the present invention to illustrate the principle and efficacy of the present patent application, and is not intended to limit the present patent application. It should be noted that for ordinary technicians in this technical field, all equivalent modifications or technical improvements made without departing from the spirit and technical ideas disclosed in this patent application should also be regarded as the protection scope of the present invention.

Claims

1. A pressure plate ejector, characterized in that: It includes a base, a throw-in / out drive motor, an electromagnet and a transmission assembly. The throw-in / out drive motor is installed on the base, and the electromagnet is connected to the output shaft of the throw-in / out drive motor through the transmission assembly. The base includes a shell extending to the outer periphery of the motor output shaft, and a guide rail groove is provided on the shell. The transmission assembly includes a piston, one end of the piston is transmission-connected to the motor output shaft, and the other end is fixedly connected to the electromagnet; a guide pin that can move along the guide groove is fixedly provided on the piston, and the piston is slidably connected to the housing through the guide pin; The transmission assembly also includes a threaded rod with external threads; one end of the threaded rod is fixedly connected to the output shaft of the insertion and retraction drive motor; The piston is hollow and open at one end. A threaded pin is provided on the inner side of the piston to match the outer thread of the threaded rod, so that the rotation of the threaded rod can drive the piston to rotate or move axially while the circumferential movement is restricted. The threaded rod, the piston and the output shaft of the throwing and retracting driving motor are coaxially arranged, and the output shaft of the throwing and retracting driving motor is embedded and fixed in one end of the threaded rod; The portion of the housing extending to the outer periphery of the output shaft of the casting and retraction drive motor is cylindrical, the axial length of the cylindrical extension portion is greater than the length of the output shaft of the casting and retraction drive motor, and the guide rail groove is located on the cylindrical extension portion; The guide rail groove is U-shaped; The electromagnet is fixedly connected to the piston end through an electromagnet bracket; the electromagnet bracket is hollow, the electromagnet is clamped to one end inside the electromagnet bracket, and the other end of the electromagnet bracket is fixedly sleeved on the outer periphery of the piston end.

2. A pressure plate insertion and withdrawal mechanism based on the pressure plate insertion and withdrawal device according to claim 1, characterized in that: It includes a frame, a pressure plate ejector and an ejector moving drive unit; the ejector moving drive unit includes an ejector moving drive motor, a transmission synchronous belt and a moving pair; There are at least two mobile drive motors, which are respectively installed at the two side ends of the frame or the two ends of the same side, and the output shafts thereof are installed with output synchronous wheels. Among the four corners of the frame, the corners where the mobile drive motors are not installed are respectively installed with frame synchronous wheels; The frame is provided with at least one linear transverse guide rail; the moving pair comprises mounting seats arranged opposite to each other in the upper and lower parts, at least one linear longitudinal guide rail is fixedly connected between the two mounting seats, at least one mounting seat is provided with a transverse slider adapted to the linear transverse guide rail; the moving pair is slidably connected to the linear transverse guide rail through the transverse slider; the left and right sides of the two mounting seats are respectively provided with moving pair synchronous wheels; A base cushion column is provided on one side of the base of the pressure plate ejector, and a longitudinal slide block adapted to the linear longitudinal guide rail is provided on at least one side of the base of the pressure plate ejector, and the base of the pressure plate ejector is slidably connected to the linear longitudinal guide rail through the longitudinal slide block; The transmission synchronous belt is rollingly connected to the output synchronous wheel, the moving pair synchronous wheel, and the frame synchronous wheel in the transmission path, and is fixedly connected to the base cushion column to form a transmission belt loop, so that the rotation of the output shafts of at least two moving drive motors can drive the moving pair to slide along the linear horizontal guide rail, or can drive the pressure plate ejector to slide along the linear longitudinal guide rail.

3. The pressing plate insertion and retraction mechanism according to claim 2 is characterized in that: The transmission synchronous belt is connected with the output synchronous wheel, the movable auxiliary synchronous wheel, the frame synchronous wheel and the base cushion column in the moving plane of the pressure plate throwing and retracting device to form an I-shaped loop.

4. The pressing plate insertion and retraction mechanism according to claim 2 or 3, characterized in that: There are two mobile drive motors, which are respectively installed at the upper and lower ends of one side of the frame; Two linear horizontal guide rails are arranged in parallel on the frame, and a horizontal slider is arranged on the top of the two mounting seats of the moving pair respectively, and each mounting seat is slidably connected to a linear horizontal guide rail through a corresponding horizontal slider; The moving pair comprises two mutually parallel linear longitudinal guide rails, and corresponding longitudinal sliding blocks are respectively arranged on both sides of the base of the pressure plate ejector for sliding connection with the linear longitudinal guide rails.

5. The pressing plate insertion and retraction mechanism according to claim 4 is characterized in that: The transmission synchronous belt passes through the upper mounting seat of the moving pair from the upper output synchronous wheel, and then passes around the upper frame synchronous wheel, an upper moving pair synchronous wheel that has passed around one side of the frame synchronous wheel, a lower moving pair synchronous wheel, and the lower frame synchronous wheel, and then passes through the lower mounting seat of the moving pair, and then passes around the lower output synchronous wheel, another lower moving pair synchronous wheel, another upper moving pair synchronous wheel, and finally reaches the upper output synchronous wheel, forming an I-shaped transmission loop; The transmission synchronous belt is fixedly connected with the base cushion column between the upper moving pair synchronous wheel and the lower moving pair synchronous wheel on the left side / right side of the moving pair.

6. The pressing plate insertion and retraction mechanism according to claim 2 is characterized in that: The frame is also provided with a pressing plate installation panel, the moving plane of the pressing plate ejector is parallel to the pressing plate installation panel, and one end of the pressing plate ejector mounting electromagnet faces the pressing plate installation panel.

7. A pressure plate insertion and retraction control system based on the pressure plate insertion and retraction mechanism according to any one of claims 2 to 6, characterized in that: It includes a pressing plate throwing and retracting mechanism, a data processor and a motion controller; in the pressing plate throwing and retracting mechanism, the pressing plate throwing and retracting device also includes a motor control input terminal and an electromagnetic control input terminal: The data processor receives an external pressure plate throwing and retracting control instruction, determines the target position of the pressure plate throwing and retracting device according to the pressure plate throwing and retracting control instruction, and then calculates the rotation direction and number of rotations of each mobile drive motor according to the target position of the pressure plate throwing and retracting device; The motion controller receives the rotation direction and number of revolutions of each mobile drive motor, controls the rotation of the corresponding mobile drive motor, and moves the pressure plate ejector to the target position; in response to the pressure plate ejector moving to the target position, controls the rotation of the ejector drive motor through the motor control input end, controls the power supply of the electromagnet through the electromagnetic control input end, and executes the pressure plate ejection and retraction operation; in response to the end of the pressure plate ejection and retraction operation, controls the power supply of the electromagnet.

8. The pressure plate insertion and retraction control system according to claim 7 is characterized in that: The pressure plate insertion and retraction control system also includes a position sensor and a visual sensor. The visual sensor monitors the pressure plate insertion and retraction execution process image of the pressure plate insertion and retraction device and transmits it to the data processor. Position sensors are respectively provided at the pressure plate installation positions. The position sensors monitor the insertion and retraction status of the pressure plate at the current position and transmit it to the data processor.

Images