Driving device

Abstract

The invention discloses a driving device which comprises a static iron core, a movable iron core, a movable iron core shaft, a coil, a shell, an upper copper sleeve, a lower copper sleeve and a sealing cover. The shell is of a hollow structure with the upper end and the lower end open. A coil is arranged in an inner cavity of the shell. A movable iron core shaft vertically penetrates through the central position of the coil; the movable iron core shaft is exposed out of the upper part of the top surface of the coil, penetrates through the top opening of the shell and the central through hole of the upper copper sleeve from bottom to top, and then is connected with a pressing nut; a movable iron core is arranged on the circumferential outer side of the middle part of the movable iron core shaft; the lower portion of the movable iron core shaft vertically penetrates through the center through hole of the static iron core, the center through hole of the lower copper sleeve and the center through hole of the sealing cover from top to bottom and then is exposed out of the bottom face of the sealing cover. The system is reasonable in design, good in operation reliability, not prone to being interfered by the environment, high in adaptability in the outdoor environment and capable of well meeting the requirements of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a driving device. BACKGROUND

[0002] The hump vehicle retarder is the most important speed control equipment in the railway freight marshalling station. The speed of the vehicle is controlled by friction braking of the vehicle that is released, so as to realize automatic and safe connection of the vehicle. When the disassembled vehicle is released from the top of the hump, the potential energy is converted into kinetic energy to form a certain speed. According to the need of marshalling, the interval and arrival at different specified positions need to be controlled. The vehicle retarder controls the vehicle to reach a certain speed requirement by braking.

[0003] With the development of railway freight transportation, the number of released freight vehicles in the hump marshalling station increases, and the braking frequency of the pneumatic non-gravity vehicle retarder (such as the T.JK series non-gravity vehicle retarder produced by Tianjin Railway Signal Co., Ltd.) also increases. At the same time, the pneumatic non-gravity vehicle retarder is a device that is used outdoors for a long time. The reliability, stability and safety performance of the pneumatic non-gravity vehicle retarder and its control device are also improved. The requirements for the structural strength, temperature change resistance and voltage fluctuation resistance of the control device matched with the pneumatic non-gravity vehicle retarder are also improved. The main function of the control device matched with the pneumatic non-gravity vehicle retarder is to control the main air path switching to realize the cylinder action of the pneumatic non-gravity vehicle retarder, so as to realize the action of the vehicle retarder.

[0004] However, the control device matched with the traditional T.JK series non-gravity vehicle retarder has a power device (i.e. driving device) for air path switching, which is designed to rely on control pressure difference switching, and the control coil is relatively small. The adaptability to the large difference between the north and south environment is relatively poor, and it is easy to be disturbed by environmental factors. The adaptability in outdoor environment is poor, and it cannot meet the needs of users.

[0005] In addition, the pneumatic control valve (such as K33DJ three-position three-way electric control stop valve produced by Tianjin Railway Signal Co., Ltd.) in the control device matched with the current T.JK series non-gravity vehicle retarder has a self-designed small two-position three-way electromagnetic switching valve in the pilot part. The pilot air path switching is realized by controlling the spool action. Since the air filter is not provided at the front end of the control device, small impurities in the air source can easily cause the sliding seal to be blocked, air leakage and other problems.

[0006] Therefore, it is urgent to develop a technology that can solve the above technical problems. SUMMARY

[0007] The purpose of the present application is to provide a driving device to solve the technical defects of the prior art.

[0008] To this end, the application provides a driving device characterized in comprising a static iron core, a dynamic iron core, a dynamic iron core shaft, a coil, a shell, an upper copper sleeve, a lower copper sleeve and a sealing cover.

[0009] The shell is of a hollow structure with openings at its upper and lower ends.

[0010] The inner cavity of the shell is provided with the coil.

[0011] The center of the coil is vertically penetrated by the dynamic iron core shaft.

[0012] The upper part of the dynamic iron core shaft protrudes from the top surface of the coil, penetrates the top opening of the shell and the central through hole of the upper copper sleeve from bottom to top, and is connected with a pressing nut.

[0013] The middle part of the dynamic iron core shaft is provided with the dynamic iron core on the outer side in the circumferential direction.

[0014] The lower part of the dynamic iron core shaft penetrates the central through hole of the static iron core, the central through hole of the lower copper sleeve and the central through hole of the sealing cover from top to bottom, and protrudes from the bottom surface of the sealing cover.

[0015] As can be seen from the technical solutions provided by the application, compared with the prior art, the application provides a driving device, which is reasonable in design, reliable in operation, not easily affected by environmental interference, strong in adaptability in outdoor environment, and capable of meeting the needs of users well, and has great practical significance.

[0016] The driving device provided by the application is a solenoid coil device, and by applying the application, the air path reversing of the pneumatic non-gravity vehicle retarder control device can be reliably realized. As the power device for air path reversing in the control device matched with the vehicle retarder, the application can effectively reduce the influence of working voltage fluctuation and temperature and the like, and improve the applicability of the equipment in outdoor environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 a The application provides a mounting state structure schematic diagram of the driving device;

[0018] Figure 1 b The application provides an exploded state structure schematic diagram of the driving device;

[0019] Figure 1 c The application provides a mounting schematic diagram of the driving device and the pilot air path base in the original control device matched with the pneumatic non-gravity vehicle retarder (for example, the T.JK series non-gravity vehicle retarder produced by Tianjin Railway Signal Co., Ltd.);

[0020] Figure 1 dA schematic diagram of the pilot air path of the original control device for a pneumatic non-gravity vehicle reducer (such as the T.JK series non-gravity vehicle reducer produced by Tianjin Railway Signal Co., Ltd.) used in the drive device provided by the present invention.

[0021] Figure 2 A three-dimensional structural diagram of the stationary iron core 1 in a driving device provided by the present invention;

[0022] Figure 3 A three-dimensional structural diagram of the moving iron core 2 in a driving device provided by the present invention;

[0023] Figure 4 A three-dimensional structural diagram of the moving iron core shaft 3 in a driving device provided by the present invention. Figure 5a A three-dimensional schematic diagram of the installation state of the moving iron core shaft 3 and the magnetic shielding copper sheet 15;

[0024] Figure 5b A three-dimensional schematic diagram of the installation state of the moving iron core 2, the moving iron core shaft 3, and the magnetic shielding copper sheet 15;

[0025] Figure 5c A three-dimensional structural diagram showing the assembly of the moving iron core 2 and the moving iron core shaft 3 with the stationary iron core 1 in a cooperative installation state;

[0026] Figure 5d A three-dimensional structural diagram showing the assembly of the moving iron core 2, the moving iron core shaft 3, and the stationary iron core 1 with the coil 4.

[0027] Figure 6a A three-dimensional structural schematic diagram of coil 4 in a driving device provided by the present invention;

[0028] Figure 6b A three-dimensional structural diagram of the coil frame in the coil provided by the present invention;

[0029] Figure 6c A three-dimensional structural diagram of the intermediate support tube 402 in the coil provided by the present invention;

[0030] Figure 6d A three-dimensional structural diagram of the lower support plate 403 in the coil provided by the present invention;

[0031] Figure 6e A three-dimensional structural diagram of the lower insulating plate 404 in the coil provided by the present invention;

[0032] Figure 6f A three-dimensional structural diagram of the upper insulating plate 405 in the coil provided by the present invention;

[0033] Figure 6gThe schematic view of the three-dimensional structure of the upper support plate 406 in the coil provided by the present application;

[0034] Figure 6h The schematic view of the three-dimensional structure of the enameled coil 407 in the coil provided by the present application;

[0035] Figure 7 The schematic view of the three-dimensional structure of the shell 5 in the driving device provided by the present application;

[0036] Figure 8 The schematic view of the three-dimensional structure of the upper copper sleeve 6 in the driving device provided by the present application;

[0037] Figure 9 The schematic view of the three-dimensional structure of the lower copper sleeve 7 in the driving device provided by the present application;

[0038] Figure 10 The schematic view of the three-dimensional structure of the sealing cover 8 in the driving device provided by the present application;

[0039] Figure 11 The schematic view of the three-dimensional structure of the dustproof pad 9 in the driving device provided by the present application;

[0040] Figure 12 The schematic view of the three-dimensional structure of the pressing nut 10 in the driving device provided by the present application;

[0041] Figure 13 The schematic view of the three-dimensional structure of the magnetic isolation copper sheet 15 in the driving device provided by the present application;

[0042] Figure 14 The schematic view of the magnetic circuit of the driving device provided by the present application;

[0043] In the figure, 1 is a static core, 2 is a moving core, 3 is a moving core shaft, 4 is a coil, 5 is a shell; 6 is an upper copper sleeve, 7 is a lower copper sleeve, 8 is a sealing cover, 9 is a dustproof pad, 10 is a pressing nut; 11 is a terminal; 12 is a first connecting screw, 13 is a second connecting screw, 14 is a third connecting screw, 15 is a magnetic isolation copper sheet; 16 is a pilot gas path base; 17 is a mounting screw;

[0044] 401 is a lead wire, 402 is an intermediate support tube, 403 is a lower support plate

[0045] 404 is a lower insulating plate, 405 is an upper insulating plate, 406 is an upper support plate, 407 is an enameled coil. DETAILED DESCRIPTION

[0046] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] In the description of the present application, it should be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those of ordinary skill in the art, the specific meaning of the above terms in the present patent can be understood according to the specific circumstances.

[0049] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0050] The technical solutions of the present application will be further described below through specific embodiments. The details not mentioned in the embodiments are industry conventional technologies.

[0051] Referring to Figures 1 a to 1 d , Figures 2 to 4 , Figures 5a to 5d , Figures 6a to 6h , Figures 7 to 14 The present application provides a driving device, which is a solenoid device. The device comprises a static iron core 1, a moving iron core 2, a moving iron core shaft 3, a coil 4, an outer shell 5, an upper copper sleeve 6, a lower copper sleeve 7, a sealing cover 8, a dustproof pad 9, a pressing nut 10, a terminal 11 and a magnetic isolation copper sheet 15.

[0052] The outer shell 5 is a hollow structure with openings at the upper and lower ends.

[0053] The inner cavity of the shell 5 is provided with the coil 4;

[0054] The coil 4 is a hollow structure, and a dynamic iron core shaft 3 vertically penetrates the center position of the coil 4;

[0055] The upper part of the dynamic iron core shaft 3 is exposed on the top surface of the coil 4, penetrates the center through hole of the upper copper sleeve 6 and the top opening of the shell 5 from bottom to top, and is connected with a pressing nut 10;

[0056] The middle part of the dynamic iron core shaft 3 is provided with a dynamic iron core 2 on the outer side in the circumferential direction;

[0057] The dynamic iron core 2 is located in the center through hole on the inner side of the coil 4;

[0058] The lower part of the dynamic iron core shaft 3 penetrates the center through hole of the static iron core 1, the center through hole of the lower copper sleeve 7 and the center through hole of the sealing cover 8 from top to bottom, and is exposed on the bottom surface of the sealing cover 8.

[0059] In the present application, specifically, the center through hole provided on the inner side of the coil 4 is vertically penetrated, and the dynamic iron core 2 is arranged in the center through hole of the coil 4;

[0060] The dynamic iron core shaft 3 vertically penetrates the center through hole of the dynamic iron core 2;

[0061] Specifically, the dynamic iron core 2 and the center through hole on the inner side of the coil 4 are in clearance fit.

[0062] Specifically, the outer diameter of the dynamic iron core 2 is smaller than the inner diameter of the center through hole on the inner side of the coil 4.

[0063] It should be noted that the dynamic iron core 2 is located in the center through hole on the inner side of the coil 4; the dynamic iron core 2 and the center through hole on the inner side of the coil 4 are in clearance fit, the outer diameter of the dynamic iron core 2 is smaller than the inner diameter of the center through hole on the inner side of the coil 4, and therefore the dynamic iron core 2 can freely slide inside the coil 4 (i.e. in the center through hole).

[0064] In the present application, the upper part, the middle part and the lower part of the dynamic iron core shaft 3 are respectively a first mounting section 301, a second mounting section 302 and a third mounting section 303;

[0065] The second mounting section 302 is connected with the center through hole of the dynamic iron core 2 (specifically, in interference fit connection).

[0066] Specifically, the first mounting section 301 of the dynamic iron core shaft 3 has external threads;

[0067] The vertical center through hole of the pressing nut 10 is an internal threaded hole;

[0068] The first mounting section 301 of the moving iron core shaft 3 is fixedly connected with the vertical central through hole of the pressing nut 10 through screwing.

[0069] In a specific implementation, the second mounting section 302 is in interference fit with the central through hole of the moving iron core 2.

[0070] In a specific implementation, the second mounting section 302 of the moving iron core shaft 3 is provided with vertically distributed magnetic isolation copper sheets 15 between the central through hole of the moving iron core 2.

[0071] The cross-sectional shape of the magnetic isolation copper sheet 15 is a circular ring, which is processed from copper or copper alloy. After installation, the magnetic isolation copper sheet 15 is axially located between the moving iron core 2 and the third mounting section 303 of the moving iron core shaft 3, and has the function of isolating the moving iron core 2 and the static iron core 1, and can quickly reduce the electromagnetic attraction between the moving iron core 2 and the static iron core 1 after the coil 4 loses power.

[0072] It should be noted that the first taper surface 201 on the inner side of the lower part of the moving iron core 2 faces downward, the large end of the moving iron core shaft 3 (i.e. the third mounting section 303 at the lower part) faces downward, and the moving iron core 2 and the moving iron core shaft 3 are pressed and assembled into a combination from top to bottom by interference fit; during pressing and assembling, the magnetic isolation copper sheet 15 is arranged between the moving iron core 2 and the moving iron core shaft 3, and is pressed and assembled to the shoulder of the large end (i.e. the third mounting section 303) of the moving iron core shaft 3 and is in close contact and limited.

[0073] In a specific implementation, the first taper surface 201 on the inner side of the lower part of the moving iron core 2 has a reserved gap between the second taper surface 202 on the top of the static iron core 1, that is, the inner side cavity of the lower part of the moving iron core 2 and the top of the static iron core 1 are in clearance fit.

[0074] It should be noted that in a specific implementation, during installation, for the combination formed by the moving iron core 2 and the moving iron core shaft 3 after pressing and assembling, the first taper surface 201 on the inner side of the lower part of the moving iron core 2 faces downward, and then the moving iron core shaft 3 is inserted into the inner hole (i.e. the central through hole) of the static iron core 1 from top to bottom, the first taper surface 201 is arranged opposite to the second taper surface 202 (i.e. the taper surface end) on the top of the static iron core 1, and then the moving iron core 2, the moving iron core shaft 3 and the static iron core 1 are installed in the inner hole (i.e. the central through hole) of the coil 4 from bottom to top. Then, the whole composed of the moving iron core 2, the moving iron core shaft 3, the static iron core 1 and the coil 4 is installed in the inner hole (i.e. the inner cavity) of the shell 5 from bottom to top.

[0075] In the present application, the coil 4 has two lead-out wires 401 (positive and negative lead-out wires respectively) on it, and the lead-out positions of the two lead-out wires are on one side of the top of the coil 4.

[0076] The circumferential side wall (for example, the left side wall) of the shell 5 is provided with a lead-out wire passing hole 501 (i.e. a through hole) at a position corresponding to the two lead-out wires 401 on the coil 4.

[0077] Specifically, the two lead-out wires 401 on the coil 4 are connected to the two terminals 5 after passing through the lead-out wire passing holes 501.

[0078] Further, the two terminals 11 are installed in parallel on the left outer wall of the shell 5 and are fixedly connected to the left outer wall of the shell 4 by the third connecting screws 14.

[0079] In the present application, specifically, the coil 4 is an electromagnetic coil, and the circumferential outer wall of the coil 4 is wound from top to bottom with multiple turns of enameled wire coil 407 (specifically, enameled copper wire).

[0080] Specifically, the middle of the coil 4 is provided with a middle support pipe 402;

[0081] The upper end of the coil 4 has an upper insulating plate 405 and an upper support plate 406, the upper support plate 406 is above the upper insulating plate 405, in assembly, the upper support plate 406 is tightly attached to the upper insulating plate 405 and is installed on the first installation section 4021 shoulder of the upper part of the middle support pipe 402, at the same time, the upper support plate 406 is welded and fixed with the middle support pipe 402;

[0082] The lower end of the coil 4 has a lower insulating plate 404 and a lower support plate 403, the lower support plate 403 is below the lower insulating plate 404, in assembly, the lower support plate 403 is tightly attached to the lower insulating plate 404 and is installed on the third installation section 4023 shoulder of the lower part of the middle support pipe 402, at the same time, the lower support plate 403 is welded and fixed with the middle support pipe 402;

[0083] It should be noted that the middle support pipe 402 and the upper and lower insulating plates 405 and 404 as well as the upper and lower support plates 406 and 403 together constitute a coil holder;

[0084] The multiple turns of enameled wire coil 407 are wound on the circumferential outer wall of the middle support pipe 402 between the two insulating plates 405 and 404.

[0085] It should be noted that the multiple turns of enameled wire coil 407 is made of one enameled copper wire with a diameter not less than 0.5mm 2 , and a mass level not less than 2 levels, after winding, the two ends of the enameled wire are welded with 0.5mm 2 diameter flame-retardant cable wires to form two lead-out wires 401, and are fixed on the outside of the enameled wire coil 407 by winding with alkyd glass paint.

[0086] Specifically, the two lead-out wires 401 on the coil 4 are connected to the two terminals 5 after passing through the lead-out wire passing holes 501. The two lead-out wires 401 on the coil 4 are connected to the two terminals 5 after passing through the lead-out wire passing holes 501.

[0087] In the application, the fixed disc 102 at the lower end of the static iron core 1 is fixedly connected with the bottom of the shell 5 through a plurality of second connecting screws 13.

[0088] Specifically, a plurality of fixed disc through holes 1020 are arranged on the fixed disc 102 at the lower end of the static iron core 1.

[0089] The bottom of the shell 5 is provided with a shell bottom mounting threaded hole 502 at a position corresponding to each fixed disc through hole 1020.

[0090] The second connecting screw 13 is threadedly fixedly connected with the position corresponding shell bottom mounting threaded hole 502 after passing through the fixed disc through hole 1020 from bottom to top.

[0091] In the application, the four peripheral edges of the upper copper sleeve 6 are connected with the top of the shell 5 through a plurality of first mounting screws 12.

[0092] Specifically, a plurality of upper copper sleeve through holes are uniformly distributed on the four peripheral edges of the upper copper sleeve 6.

[0093] The top of the shell 5 is provided with a shell top mounting threaded hole at a position corresponding to each upper copper sleeve through hole.

[0094] The first mounting screw 12 is threadedly fixedly connected with the position corresponding shell top mounting threaded hole after passing through the upper copper sleeve through hole from top to bottom.

[0095] It should be noted that the small end of the lower part of the upper copper sleeve 6 is arranged downward, the central through hole of the upper copper sleeve 6 vertically passes through the first mounting section 301 at the upper end of the moving iron core shaft 3, and the upper copper sleeve 6 is mounted on the top of the shell 5 through the first mounting screw 12.

[0096] In the application, the lower copper sleeve mounting groove is arranged at the central position of the bottom of the static iron core 1.

[0097] The upper end of the lower copper sleeve 7 is located in the lower copper sleeve mounting groove of the static iron core 1.

[0098] Specifically, the upper end of the lower copper sleeve 7 is in interference fit with the lower copper sleeve mounting groove of the static iron core 1.

[0099] It should be noted that the lower copper sleeve mounting groove of the static iron core 1 is located in the lower section of the central through hole of the static iron core 1.

[0100] Specifically, a dustproof pad 9 in the shape of a circular ring is arranged between the bottom of the lower copper sleeve 7 and the top of the sealing cover 8.

[0101] The third mounting section 303 at the lower part of the moving iron core shaft 3 vertically passes through the central through hole of the dustproof bag 9.

[0102] Further, the cross-sectional area of the sealing cover 8 is larger than that of the lower copper sleeve 7.

[0103] Further, the sealing cover 8 is fixedly connected with the bottom of the static iron core 1 through the plurality of second connecting screws 13.

[0104] Further, the four peripheral edges of the sealing cover 8 are uniformly provided with a plurality of sealing cover through holes.

[0105] The bottom of the static iron core 1 is provided with a sealing cover mounting screw hole corresponding to each sealing cover through hole.

[0106] The second connecting screw 13 is threadedly fixedly connected with the sealing cover mounting screw hole corresponding in position on the bottom of the static iron core 1 after passing through the sealing cover through hole on the sealing cover 8.

[0107] It should be noted that the lower copper sleeve 7 has a small end (i.e. the upper end) upwardly mounted on the bottom of the static iron core 1 (specifically in interference fit); the dustproof pad 9 is mounted on the bottom of the lower copper sleeve 7 and fixed through the sealing cover 8, and the sealing cover 8 is mounted on the bottom of the static iron core 1 and fixedly connected with the static iron core 1 through the second mounting screw 13.

[0108] In the present application, specifically, the moving iron core 2 and the static iron core 1 are processed from DT4 and above pure iron materials; the moving iron core shaft 3 is processed from HPb59-1 and above copper and copper alloy materials; and the shell 5 is processed from Q235B and above steel materials.

[0109] In the present application, it should be noted that the shell 5 mainly functions to protect the internal components, conduct the magnetic circuit, and be fixedly connected with external devices.

[0110] The static iron core 1 is connected with the shell 5 and fixed with the shell, and mainly functions to conduct the magnetic circuit and generate magnetic force to attract the moving iron core 2.

[0111] The moving iron core 2 and the moving iron core shaft 3 are fixedly connected through interference and can be regarded as a whole, wherein the moving iron core 2 functions to conduct the magnetic circuit, generate magnetic force, attract the static iron core 1, and drive the moving iron core shaft 3 to move and transmit the acting force.

[0112] The upper copper sleeve 6 and the lower copper sleeve 7 mainly function to guide the movement of the moving iron core shaft 3.

[0113] The dustproof pad 9 mainly functions to prevent dust from entering and affecting the operation; the sealing cover 9 mainly functions to fix the dustproof pad 9; the pressing nut 10 mainly functions to increase the contact area of the hand when manual operation is needed, to protect the protruding part of the moving iron core shaft, and to provide a counterweight; and the terminal 11 mainly functions to connect and fix the internal enameled coil lead wire and the external power supply wire.

[0114] In order to more clearly understand the technical solutions of the present application, the working principle of the present application is described below.

[0115] For the device of the present application, when the moving iron core 2 is not operated, there is a certain gap between the moving iron core 2 and the static iron core 1 (i.e. the first tapered surface 201 on the inner side of the lower part of the moving iron core 2 has a vertical gap with the second tapered surface 202 on the top of the static iron core 1);

[0116] When the two terminals 11 connected by the lead wire 401 of the coil 4 apply a direct current in the counterclockwise direction (from top to bottom of the coil 4), the coil 4 will excite the moving iron core 2 and the static iron core 1 (i.e. apply a magnetic field), and according to Ampere's Law, the direction of the magnetic force line is shown by the dotted line with an arrow in the middle, Figure 14 Under the action of the magnetic field, the moving iron core 2 and the static iron core 1 become magnetic parts with opposite magnetic properties, and the moving iron core 2 and the static iron core 1 attract each other, so that the static iron core 1 generates a vertical downward force on the moving iron core 2, causing the moving iron core 2 to move linearly downward and drive the moving iron core shaft to move downward.

[0117] It should be noted that if the two ends of the coil 4 apply a direct current in the clockwise direction (from top to bottom of the coil), according to Ampere's Law, the direction of the magnetic force line is reversed, the moving iron core 2 and the static iron core 1 still have opposite magnetic properties and attract each other, so that the static iron core generates a vertical downward force on the moving iron core, i.e. the direction of the voltage does not affect the direction of the operation.

[0118] It should be noted that the greater the current through the coil 4, the greater the vertical downward force of the static iron core 1 on the moving iron core 2.

[0119] It should be noted that the driving device of the present application can be installed on any device that meets the installation requirements and performance requirements, and the implementation process of the technical solutions will be described below by taking the function and role of the present application in the K33DJ three-position three-way electrically controlled stop valve (i.e. pneumatic control valve) produced by Tianjin Railway Signal Co., Ltd.

[0120] In specific implementation, the present application can be installed on the pilot gas path base 16 of the K33DJ three-position three-way electrically controlled stop valve (i.e. pneumatic control valve), as shown in Figure 1 c The present application is installed on the pilot gas path base 16 through the screw installation through holes 503 on the lower part of the shell 5, and the two are connected and fastened by two installation screws 17;

[0121] K33DJ three-position three-way electric control stop valve (i.e. pneumatic control valve) has a pilot gas path structure as shown in Figure 1 d After the installation of the present application on the pilot gas path base 16, the moving iron core shaft 3, the upper valve 1601, the lower valve 1602, the lower spring 1603 and the sealing bolt 1603 in the pilot gas path and the adjacent parts are tightly attached under the action of gravity, and the pilot gas path base 16 is connected and fastened with the external main gas path installation base through four installation screws.

[0122] In use, the air inlet end p port in the pilot gas path base 16 always maintains a certain pressure of compressed air (i.e. wind source wind pressure), under the action of compressed air and the lower spring 1603, the lower valve 1602, the upper valve 1601, the moving iron core shaft 3 and other parts move downward, and when the lower valve 1602 moves to the lower air inlet end surface A, it is limited and sealed, at this time the upper exhaust port a is opened and communicated with the o port (o port is communicated with the atmosphere), o port and a port are communicated, both ends are free of compressed air, and the magnetic isolation copper sheet 15 in the present application and the static iron core 1 maintain a certain gap.

[0123] When the two terminals 11 at both ends of the coil 4 are loaded with a certain direct current voltage (for example, DC 24V), the coil 4 is excited, and the moving iron core 2 and the static iron core 1 form magnets with opposite polarities. Since the static iron core 1 is fixed, it exerts a vertical downward attractive force on the moving iron core 2, which drives the moving iron core shaft 3 to push the upper valve 1601 and the lower valve 1602 downward. When the upper valve 1601 moves to the upper exhaust port end surface B, it is limited and sealed, at this time the lower air inlet (i.e. air inlet end p port) is opened, p port and a port are communicated, compressed air flows from p port to a port through the gap between the valve stem of the lower valve 1602 and the pilot gas path base 16, at this time the pilot gas path of the K33DJ three-position three-way electric control stop valve (i.e. pneumatic control valve) is conducted.

[0124] When the two terminals 11 at both ends of the coil 4 lose power, the excitation of the coil 4 disappears, and the interaction between the moving iron core 2 and the static iron core 1 disappears. At this time, under the action of compressed air and the lower spring, the lower valve 1602, the upper valve 1601, the moving iron core shaft 3 and other parts move upward at the same time, and when the lower valve 1602 moves to the lower air inlet end surface A, it is limited and sealed, at this time the upper exhaust port a is opened, o port and a port are communicated, compressed air in a port is discharged through the gap between the valve stem of the upper valve 1601 and the pilot gas path base 16, and the gap between the magnetic isolation copper sheet 15 in the present application and the static iron core 1 is restored, at this time the pilot gas path of the K33DJ three-position three-way electric control stop valve (i.e. pneumatic control valve) is disconnected.

[0125] It should be noted that the K33DJ three-position three-way electric control stop valve (i.e. pneumatic control valve) has a pilot air path base 16 structure design and working principle, which is a mature conventional technology that has been widely applied, and will not be described here.

[0126] Compared with the prior art, the driving device provided by the application has the following beneficial effects:

[0127] 1. The driving device in the control device matched with the conventional T.JK series non-gravity vehicle reducer is realized by controlling the pressure difference between the two ends of the valve core of the K33DJ three-position three-way electric control stop valve (i.e. pneumatic control valve) in the control device, so that the valve core acts to realize the reversing of the pilot air path. The control coil of the conventional driving device is relatively small, and the number of rubber sealing rings is relatively large, which is greatly affected by the difference between the north and south environments. At the same time, since no air filter is arranged at the front end of the current T.JK pneumatic non-gravity vehicle reducer control device, impurities are easily mixed in the air source, which causes the sealing ring to be easily damaged and blocked. The driving device of the application reduces the reversing valve core and related sealing rings, and directly opens the pilot air path by the driving device, which reduces the influence of temperature change and impurities to a certain extent.

[0128] 2. Compared with the coil in the conventional driving device, the coil in the driving device of the application has an increased diameter of the enameled wire, an increased height of the enameled coil, and an increased number of turns, which increases the attraction between the moving and static iron cores. Under the same voltage and temperature conditions, the moving iron core shaft can provide greater driving force, more easily open the pilot air path, and more flexible action, thereby reducing the influence of temperature and voltage fluctuations under the same conditions.

[0129] 3. The driving device of the application increases the diameter of each part of the moving iron core shaft 3 and other components, improves the structural strength, and makes the moving iron core shaft 3 not easy to bend and deform in long-term repeated action, thereby improving the reliability.

[0130] 4. The driving device of the application uses copper sleeve guides at both ends to make the action flexible and reduce the risk of blockage.

[0131] In summary, the driving device provided by the application has a reasonable structure, is reliable, can provide greater thrust, and improves the environmental adaptability.

[0132] In summary, the technical scheme provided by the application can be seen that, compared with the prior art, the application provides a driving device, which has a reasonable design, good running reliability, strong adaptability in outdoor environments, and can well meet the needs of users, and has great practical significance.

[0133] The driving device is a solenoid coil device, and by using the driving device, the air path reversing of a T.JK series non-gravity vehicle speed reducer control device can be reliably realized.

[0134] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A drive device characterized by comprising: The magnet core (1), the moving core (2), the moving core shaft (3), the coil (4), the shell (5), the upper copper sleeve (6), the lower copper sleeve (7) and the sealing cover (8) are included. The shell (5) is a hollow structure with openings at the top and bottom. The inner cavity of the shell (5) is provided with the coil (4). The center of the coil (4) is vertically penetrated by the moving core shaft (3). The upper part of the moving core shaft (3) is exposed on the top surface of the coil (4), passes through the top opening of the shell (5) and the center through hole of the upper copper sleeve (6) from bottom to top, and is connected with a pressing nut (10). The moving core (2) is arranged on the outer side of the middle part of the moving core shaft (3). The lower part of the moving core shaft (3) vertically penetrates the center through hole of the magnet core (1), the center through hole of the lower copper sleeve (7) and the center through hole of the sealing cover (8) from top to bottom, and is exposed on the bottom surface of the sealing cover (8).

2. The drive apparatus according to claim 1, wherein The center of the coil (4) is provided with a vertical center through hole, and the center through hole of the coil (4) is provided with the moving core (2). The center through hole of the moving core (2) is vertically penetrated by the moving core shaft (3).

3. The drive apparatus according to claim 1, wherein The moving core (2) and the center through hole of the coil (4) are gap matched. The outer diameter of the moving core (2) is smaller than the inner diameter of the center through hole of the coil (4).

4. The drive apparatus according to claim 1, wherein The upper part, the middle part and the lower part of the moving core shaft (3) are respectively the first mounting section (301), the second mounting section (302) and the third mounting section (303). The second mounting section (302) is connected with the center through hole of the moving core (2). The second mounting section (302) and the center through hole of the moving core (2) are interference fitted.

5. The drive apparatus according to claim 4, wherein The first mounting section (301) of the moving core shaft (3) has external threads. The vertical center through hole of the pressing nut (10) is an internal thread hole. The first mounting section (301) of the moving core shaft (3) is threadedly fixedly connected with the vertical center through hole of the pressing nut (10).

6. The drive apparatus according to claim 1, wherein The lower end of the magnet core (1) has a fixing disc (102), which is fixedly connected with the bottom of the shell (5) through a plurality of second connecting screws (13). The fixing disc (102) at the lower end of the magnet core (1) is provided with a plurality of fixing disc through holes (1020). The bottom of the shell (5) is provided with a shell bottom mounting thread hole (502) at a position corresponding to each fixing disc through hole (1020). The second connecting screw (13) passes through the fixing disc through hole (1020) from bottom to top, and is threadedly fixedly connected with the position corresponding shell bottom mounting thread hole (502).

7. The drive apparatus according to claim 1, wherein The periphery of the upper copper sleeve (6) is connected with the top of the shell (5) through a plurality of first mounting screws (12). The periphery of the upper copper sleeve (6) is uniformly distributed with a plurality of upper copper sleeve through holes. The top of the shell (5) is provided with a shell top mounting thread hole at a position corresponding to each upper copper sleeve through hole. The first mounting screw (12) passes through the upper copper sleeve through hole from top to bottom, and is threadedly fixedly connected with the position corresponding shell top mounting thread hole.

8. The drive apparatus according to claim 1, wherein The bottom center of the magnet core (1) has a lower copper sleeve mounting groove. The upper end of the lower copper sleeve (7) is located in the lower copper sleeve mounting groove of the static iron core (1); A circular dustproof pad (9) is arranged between the bottom of the lower copper sleeve (7) and the top of the sealing cover (8); The third mounting section (303) of the moving iron core shaft (3) has a central through hole vertically penetrating through the dustproof pad (9).

9. The drive apparatus according to any one of claims 1 to 8, wherein The four peripheral edges of the sealing cover (8) are uniformly distributed with a plurality of sealing cover through holes; The bottom of the static iron core (1) is respectively provided with a sealing cover mounting screw hole at a position corresponding to each sealing cover through hole; The second connecting screw (13) is threadedly fixed and connected with the sealing cover mounting screw hole at the corresponding position on the bottom of the static iron core (1) after passing through the sealing cover through hole on the sealing cover (8).

10. The drive apparatus according to any one of claims 1 to 8, wherein The middle of the coil (4) is provided with a middle support pipe (402); The upper end of the coil (4) has an upper insulating plate (405) and an upper support plate (406), and the upper support plate (406) is above the upper insulating plate (405); The upper support plate (406) is tightly attached to the upper insulating plate (405) and is installed on the first mounting section (4021) shoulder of the upper part of the middle support pipe (402), and the upper support plate (406) is welded and fixed with the middle support pipe (402); The lower end of the coil (4) has a lower insulating plate (404) and a lower support plate (403), and the lower support plate (403) is below the lower insulating plate (404); The lower support plate (403) is tightly attached to the lower insulating plate (404) and is installed on the third mounting section (4023) shoulder of the lower part of the middle support pipe (402), and the lower support plate (403) is welded and fixed with the middle support pipe (402); A plurality of turns of enameled wire coils (407) are wound on the circumferential outer wall of the middle support pipe (402) between the upper insulating plate (405) and the lower insulating plate (404).

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