A fully automatic contact group wiping device for switch machine

Abstract

The present invention discloses a fully automatic contact group wiping device for a switch machine, comprising a transmission part and a power part; the transmission part comprises an upper cover plate and a lower cover plate spaced apart from each other; the upper cover plate and the lower cover plate together form a mounting platform; a reserved vertical gap is provided between the upper cover plate and the lower cover plate; a first gear shaft is vertically provided through the horizontal middle position of the mounting platform; the power part comprises a DC drive motor; the upper end of the first gear shaft protrudes upward from the top surface of the upper cover plate and is connected to the output end of the DC drive motor; the lower end of the first gear shaft protrudes downward from the bottom surface of the lower cover plate and is connected to a quick-change wiping head for the moving contact group or a quick-change wiping head for the static contact group. The present invention can significantly improve the efficiency of wiping and maintenance work on the contact group of a switch machine, ensure good wiping effect, and reduce the labor intensity of railway workers.

Description

Technical Field

[0001] The invention relates to the technical field of railway turnout switching equipment, in particular to a full-automatic contact group wiping device for a switch machine. Background Art

[0002] A switch machine is an important signal infrastructure equipment used to reliably convert the switch position, change the direction of switch opening, lock the switch point rail, and reflect the switch position. It can well ensure driving safety, improve transportation efficiency, and improve the labor intensity of drivers.

[0003] A switch is a mechatronic product that, upon receiving commands from the interlocking system, switches and locks switches, and generates a signal indicating that the switches are in position. The switch uses a mechanical mechanism to drive a contact group (specifically, a moving contact group and a static contact group) to switch between the power circuit and the signal circuit. The moving and static contact groups are key components, responsible for switching the circuit on and off.

[0004] At present, the contact groups of all switch machines need to be regularly maintained and wiped during their service life. According to years of usage experience across the country, it is found that by regularly wiping the contact groups, the failure rate of the contact groups during use will be significantly reduced.

[0005] However, currently, railway staff usually manually wipe the docking point groups with cleaning items (such as sponges). Therefore, not only is the wiping work efficiency low, but the labor intensity of the railway staff is significantly increased. Summary of the Invention

[0006] The purpose of the present invention is to provide a fully automatic contact group wiping device for a switch machine in view of the technical defects in the prior art.

[0007] To this end, the present invention provides a fully automatic contact group wiping device for a switch machine, comprising a transmission part and a power part;

[0008] The transmission part includes an upper cover plate and a lower cover plate spaced apart from each other.

[0009] The upper cover plate and the lower cover plate together form a mounting platform;

[0010] There is a reserved vertical gap between the upper cover plate and the lower cover plate;

[0011] A first gear shaft is vertically provided in the middle of the horizontal position of the mounting platform;

[0012] Wherein, the power part includes a DC drive motor;

[0013] The upper end portion of the first gear shaft protrudes upward from the top surface of the upper cover plate and is connected to the output end of the DC drive motor;

[0014] The lower end portion of the first gear shaft protrudes downward from the bottom surface of the lower cover plate and is connected to the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group;

[0015] The moving contact group quick-change wiping head and the static contact group quick-change wiping head are used to rotate under the drive of a DC drive motor, thereby wiping the moving contact group or the static contact group on the switch machine respectively.

[0016] Preferably, a spacer is provided at each of the left and right ends of the vertical gap between the upper cover plate and the lower cover plate;

[0017] The upper and lower sides of the pad are in contact with the bottom surface of the upper cover plate and the top surface of the lower cover plate respectively.

[0018] Preferably, the left and right ends of the upper cover plate and the lower cover plate are respectively connected by a vertically distributed fastening screw.

[0019] Preferably, the output end of the DC drive motor is a magnetic connector;

[0020] The magnetic joint has a gear shaft docking groove with an open bottom;

[0021] The upper end portion of the first gear shaft is embedded in the gear shaft docking groove and is connected to the gear shaft docking groove by magnetic attraction.

[0022] Preferably, a second gear shaft is vertically provided at the left and right ends of the mounting platform respectively;

[0023] The upper ends of the two second gear shafts are pivotally connected to the upper cover plate;

[0024] Two second gear shafts vertically penetrate the lower cover plate;

[0025] The middle portions of the two second gear shafts are pivotally connected to the lower cover plate;

[0026] The lower ends of the two second gear shafts protrude downward from the bottom surface of the lower cover plate and are connected to the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group;

[0027] The first gear shaft is located in the vertical gap between the upper cover plate and the lower cover plate, and is fitted with a first gear;

[0028] The two second gear shafts are located in the vertical gap between the upper cover plate and the lower cover plate, and are respectively equipped with a second gear;

[0029] Both sides of the first gear are respectively engaged with the two second gears.

[0030] Preferably, the first gear and the second gear are connected to the first gear shaft and the second gear shaft respectively through flat keys.

[0031] Preferably, the quick-change wiping head of the moving contact group includes a first rotating head and a first wiping sponge;

[0032] The upper end of the first rotating head is connected to the lower end of the first gear shaft or the second gear shaft;

[0033] A cylindrical cavity with an open bottom is provided on the inner side of the lower end of the first rotating head for wiping the sponge;

[0034] The wiping sponge is arranged on the side walls of the cavity, and a circle of the first wiping sponge is bonded around it;

[0035] The inner side of the first wiping sponge has a contact ring wiping cavity;

[0036] The contact ring wiping cavity is used to accommodate the contact ring that is arranged on the top of the moving contact group on the switch machine and needs to be wiped.

[0037] Preferably, the lower ends of the first gear shaft and the second gear shaft are respectively equipped with an inlaid bumper;

[0038] The upper end of the first rotating head has a first gear shaft accommodating cavity with a top opening;

[0039] The first gear shaft receiving cavity is used to receive the lower end portion of the first gear shaft or the second gear shaft;

[0040] The side wall of the first gear shaft accommodating cavity is provided with an inlaid bump bead accommodating hole at a position corresponding to the inlaid bump bead.

[0041] Preferably, the quick-change wiping head of the static contact group includes a second rotating head and a second wiping sponge;

[0042] The upper end of the second rotating head is connected to the lower end of the first gear shaft or the second gear shaft;

[0043] A second wiping sponge is circumferentially bonded to the outer side wall around the lower end of the second rotating head;

[0044] The second wiping sponge is used for being inserted into the inner side of the contact piece which is arranged on the upper part of the static contact group on the switch machine and needs to be wiped.

[0045] Preferably, the lower ends of the first gear shaft and the second gear shaft are respectively equipped with an inlaid bumper;

[0046] The upper end of the second rotating head has a second gear shaft accommodating cavity with a top opening;

[0047] a second gear shaft accommodating cavity for accommodating a lower end portion of the first gear shaft or the second gear shaft;

[0048] The side wall of the second gear shaft accommodating cavity is provided with an inlaid bump bead accommodating hole at a position corresponding to the inlaid bump bead.

[0049] It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides a fully automatic contact group wiping device for a switch machine, which has a scientific structural design, can significantly improve the efficiency of wiping and maintenance work on the switch machine contact group, ensure good wiping effect, and reduce the labor intensity of railway workers, and has important practical significance.

[0050] The fully automatic contact group wiping device for the switch machine provided by the present invention can clean and polish the surface of the contact group, so that the switch machine can work more reliably, effectively reduce the poor contact problem of the switch machine caused by inadequate contact wiping, and reduce the failure rate of the switch machine contact group when used on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a front view of the transmission part of the fully automatic contact group wiping device for a switch machine provided by the present invention, in which the quick-change wiping head of the moving contact group is installed;

[0052] Figure 2 A schematic structural diagram of a quick-change wiping head for a static contact group installed in conjunction with a transmission part of a fully automatic contact group wiping device for a switch machine provided by the present invention;

[0053] Figure 3 This is an external view of the power part of a fully automatic contact group wiping device for a switch machine provided by the present invention;

[0054] Figure 4 A schematic diagram of the working state of a fully automatic contact group wiping device for a switch machine provided by the present invention, which is about to wipe the switch motorized contact group;

[0055] Figure 5 The present invention provides a fully automatic contact group wiping device for a switch machine, which is about to wipe the static contact group of the switch machine. Figure 1 ;

[0056] Figure 6 The present invention provides a fully automatic contact group wiping device for a switch machine, which is about to wipe the static contact group of the switch machine. Figure 2 ;

[0057] In the figure, 1-upper cover; 2-lower cover; 3-pad; 4-first gear shaft; 5-second gear shaft;

[0058] 6-gear; 7-support bushing; 8-flat key; 9-inlaid bead; 10-first rotating head;

[0059] 11-first wiping sponge; 12-fastening screw; 13-second rotating head; 14-second wiping sponge; 15-DC drive motor; 16-magnetic connector. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0062] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0064] See also Figures 1 to 6 , the present invention provides a fully automatic contact group wiping device for a switch machine, comprising a transmission part and a power part;

[0065] The transmission part includes an upper cover plate 1 and a lower cover plate 2 which are spaced apart from each other.

[0066] The upper cover plate 1 and the lower cover plate 2 together form a mounting platform;

[0067] There is a reserved vertical gap between the upper cover plate 1 and the lower cover plate 2;

[0068] A first gear shaft 4 is vertically provided in the middle of the horizontal position of the mounting platform;

[0069] Wherein, the power part includes a DC drive motor 15;

[0070] The upper end portion of the first gear shaft 4 protrudes upward from the top surface of the upper cover plate 1 and is connected to the output end of the DC drive motor 15;

[0071] The lower end portion of the first gear shaft 4 protrudes downward from the bottom surface of the lower cover plate 2 and is connected to the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group;

[0072] The moving contact group quick-change wiping head and the static contact group quick-change wiping head are used to rotate under the drive of the DC drive motor 15, thereby wiping the moving contact group 17 or the static contact group 19 on the switch machine they contact.

[0073] In the present invention, in a specific implementation, a spacer 3 is provided at the left and right ends of the vertical gap between the upper cover plate 1 and the lower cover plate 2;

[0074] The upper and lower sides of the cushion block 3 are in contact with the bottom surface of the upper cover plate 1 and the top surface of the lower cover plate 2 respectively.

[0075] In a specific implementation, the left and right ends of the upper cover plate 1 and the lower cover plate 2 are connected by a vertically distributed fastening screw 12 respectively.

[0076] In specific implementation, the left and right ends of the upper cover plate 1 and the lower cover plate 2 respectively have a threaded hole;

[0077] The pad 3 is provided with a vertical through hole at a position corresponding to the threaded hole on the upper cover plate 1;

[0078] Each fastening screw 12 passes through the threaded hole on the upper cover plate 1 and the vertical through hole on the pad 3 at the corresponding position from top to bottom, and is threadedly connected with the threaded hole on the upper cover plate 1.

[0079] In the present invention, in a specific implementation, the output end of the DC drive motor 15 is a magnetic attraction connector 16;

[0080] The magnetic connector 16 has a gear shaft docking groove 160 with an open bottom;

[0081] The upper end portion of the first gear shaft 4 is embedded in the gear shaft docking groove 160 and is connected to the gear shaft docking groove 160 by magnetic attraction.

[0082] In the present invention, in a specific implementation, a second gear shaft 5 is vertically provided at the left and right ends of the mounting platform respectively;

[0083] The upper ends of the two second gear shafts 5 are pivotally connected (i.e., rotatably connected) in the upper cover plate 1;

[0084] Two second gear shafts 5 vertically penetrate the lower cover plate 2;

[0085] The middle portions of the two second gear shafts 5 are pivotally connected (i.e., rotatably connected) in the lower cover plate 2;

[0086] The lower ends of the two second gear shafts 5 protrude downward from the bottom surface of the lower cover plate 2 and are connected to the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group;

[0087] The first gear shaft 4 is located in the vertical gap between the upper cover plate 1 and the lower cover plate 2, and is fitted with a first gear 61;

[0088] The two second gear shafts 5 are located in the vertical gap between the upper cover plate 1 and the lower cover plate 2, and are respectively equipped with a second gear 62;

[0089] Both sides of the first gear 61 are respectively engaged with two second gears 62 .

[0090] Therefore, driven by the DC drive motor 15, the first gear 61 on the first gear shaft 4 rotates, so that the two second gears 62 rotate together, and then the two second gear shafts 5 and the quick-change wiping heads (quick-change wiping heads of the moving contact group or the quick-change wiping heads of the static contact group) at the lower ends of the two second gear shafts 5 rotate together, and the quick-change wiping heads realize the wiping operation of the cleaning objects they contact.

[0091] In specific implementation, a support bushing 7 is installed on the upper end and the outer side of the middle part of each second gear shaft 5;

[0092] Two supporting bushings 7 are respectively arranged in the upper cover plate 1 and the lower cover plate 2 (with reserved supporting bushing mounting grooves).

[0093] It should be noted that a support bushing 7 is also installed on the upper end and the outer side of the middle part of the first gear shaft 4 respectively; two support bushings 7 are also respectively arranged in the upper cover plate 1 and the lower cover plate 2 (with reserved support bushing installation grooves).

[0094] In a specific implementation, the first gear 61 and the second gear 62 are connected to the first gear shaft 4 and the second gear shaft 5 via the flat key 8 respectively.

[0095] In specific implementation, it should be noted that the quick-change wiping heads installed on the first gear shaft 4 and the second gear shaft 5 are of the same type, that is, the quick-change wiping heads of the moving contact group are installed at the same time, or the quick-change wiping heads of the static contact group are installed at the same time.

[0096] In the present invention, in a specific implementation, the moving contact group quick-change wiping head includes a first rotating head 10 and a first wiping sponge 11;

[0097] The upper end of the first rotating head 10 is connected to the lower end of the first gear shaft 4 or the second gear shaft 5;

[0098] On the inner side of the lower end of the first rotating head 10, there is a cylindrical, bottom-open wiping sponge cavity;

[0099] The wiping sponge is provided on the side walls of the cavity, and a circle of first wiping sponge 11 is bonded around it;

[0100] In a specific implementation, the wiping sponge of the first rotating head 10 is provided with a cavity, and is bonded to the first wiping sponge 11 through a tearable adhesive sticker.

[0101] In specific implementation, the inner side of the first wiping sponge 11 has a contact ring wiping cavity;

[0102] The contact ring wiping cavity is used to accommodate the contact ring 18 that is arranged on the top of the movable contact group 17 on the switch machine and needs to be wiped.

[0103] It should be noted that the shape and size of the contact ring wiping cavity correspond to the shape and size of the contact ring 18 that is provided on the top of the movable contact group 17 on the switch machine and needs to be wiped.

[0104] Specifically, the lower ends of the first gear shaft 4 and the second gear shaft 5 are respectively equipped with an inlaid bump bead 9;

[0105] The upper end of the first rotary head 10 has a first gear shaft accommodating cavity with a top opening;

[0106] It should be noted that the first gear shaft accommodating cavity is used to accommodate the lower end of the first gear shaft 4 or the second gear shaft 5 , and the lower ends of the first gear shaft 4 and the second gear shaft 5 have the same shape and size.

[0107] The side wall of the first gear shaft accommodating cavity is provided with an embedded bumper accommodating hole 90 at a position corresponding to the embedded bumper 9.

[0108] Therefore, the first gear shaft 4 and the second gear shaft 5 are connected to the first rotating head 10 and realize the quick change function by inlaying the bump beads 9. The installation and connection method of inlaying the bump beads is a well-known method and will not be described in detail here.

[0109] In the present invention, in a specific implementation, the static contact group quick-change wiping head includes a second rotating head 13 and a second wiping sponge 14;

[0110] The upper end of the second rotating head 13 is connected to the lower end of the first gear shaft 4 or the second gear shaft 5;

[0111] A second wiping sponge 14 is bonded around the outer wall of the lower end of the second rotating head 13;

[0112] The second wiping sponge 14 is used to be inserted into the inner side of the contact piece 20 that is arranged on the upper part of the static contact group 19 on the switch machine and needs to be wiped.

[0113] It should be noted that the shape and size of the second wiping sponge 14 correspond to the shape and size of the inner cavity of the contact piece 20 provided on the upper part of the static contact group 19 on the switch machine and to be wiped.

[0114] In a specific implementation, the second rotating head 13 is bonded to the second wiping sponge 14 through a tearable adhesive sticker.

[0115] Specifically, the lower ends of the first gear shaft 4 and the second gear shaft 5 are respectively equipped with an inlaid bump bead 9;

[0116] The upper end of the second rotating head 13 has a second gear shaft accommodating cavity with a top opening;

[0117] It should be noted that the second gear shaft accommodating cavity is used to accommodate the lower end of the first gear shaft 4 or the second gear shaft 5, and the lower ends of the first gear shaft 4 and the second gear shaft 5 are the same in shape and size.

[0118] The side wall of the second gear shaft accommodating cavity is provided with an embedded bumper accommodating hole 90 at a position corresponding to the embedded bumper 9.

[0119] It should be noted that the upper end of the first rotary head 10 and the upper end of the second rotary head 13 have the same shape and structure.

[0120] Therefore, the first gear shaft 4 and the second gear shaft 5 are connected to the second rotating head 13 by inlaying the bumping beads 9 and realize the quick-change function.

[0121] In the present invention, the DC drive motor 15 can be a 4-8V miniature DC motor, powered by a rechargeable lithium battery, and can be further configured with a Type-C charging port to charge the lithium battery. The technology of the DC drive motor is conventional and well-known, and will not be described in detail here.

[0122] In specific implementation, the main switch and forward and reverse switches can be further integrated on the casing of the DC drive motor 15. The motor has a no-load speed greater than 5000r / min and can run for 2-3 hours when fully charged.

[0123] It should be noted that, in the present invention, the power part adopts a low-power miniature DC drive motor and is equipped with a corresponding magnetic connector, which is connected to the gear shaft in the transmission part by magnetic attraction.

[0124] After the power part transmits the rotational torque to the transmission part, the first gear in the transmission part rotates and drives the other two second gears to rotate synchronously. The gears and the gear shafts are connected by keys. While the gears drive the gear shafts to rotate, they also drive the corresponding type of quick-change wiping heads to rotate, thereby wiping off the stains on the surface of the switch motorized contact group or the static contact group.

[0125] It should be noted that, for the present invention, for the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group, the quick-change wiping head includes two parts: a rotating head and a customized sponge head. The customized sponge (i.e., the first wiping sponge and the second wiping sponge) uses a high-density high-rebound sponge, which is connected to the rotating head through a structure similar to a flat key protrusion and an integrated rubber strip. The sponge can not only wipe the stains on the surface of the contact group clean, but also the loose and porous structure of the high-density sponge itself can well absorb the wear powder generated by the contacts during use, and has a certain surface polishing effect.

[0126] After testing, it was found that the fully automatic contact group wiping device for switch machines provided by the present invention can greatly improve the work efficiency of railway maintenance workers in maintaining and wiping the contacts. At the same time, the good wiping effect can greatly reduce the probability of poor contact of the switch machine contact group.

[0127] In order to more clearly understand the technical solution of the present invention, the working principle of the present invention is described below.

[0128] 1. Wipe the moving contact group.

[0129] like Figure 4As shown, when it is necessary to wipe the moving contact group 17 on the switch machine, the lower ends of the first gear shaft 4 and the second gear shaft 5 are connected to the quick-change wiping head of the moving contact group; at this time, the user holds the DC drive motor 15, connects the first gear shaft 4 through the magnetic connector 16, starts the DC drive motor 15 to rotate, drives the magnetic connector 16 to rotate, thereby drives the first gear shaft 4 to rotate, and the first gear shaft 4 drives the first gear 61 to rotate. Since the first gear 61 and the other two second gears 62 are in a mutually meshing relationship, the three gears will rotate at the same time. The rotation of the three gears will drive the second gear shaft 5 to rotate, thereby driving the first rotating head 10 and the first wiping sponge 11 to rotate together, thereby wiping the three contact rings 18 set on the top of the moving contact group 17 on the switch machine that need to be wiped.

[0130] When in use, it is necessary to first put the first rotating head 10 and the first wiping sponge 11 on the contact ring 18 of the moving contact group 17. When the first rotating head 10 and the first wiping sponge 11 rotate, the stains and powder on the contact ring 18 will be wiped clean, and the first wiping sponge 11 will have a certain polishing effect on the surface of the contact ring 18.

[0131] 2. Wiping operation of the static contact group.

[0132] like Figure 5 、 Figure 6 As shown, when wiping the static contact piece 20 of the static contact group 19 of the switch machine, the second rotating head 13 and the second wiping sponge 14 need to be replaced. When in use, the second rotating head 13 bonded with the second wiping sponge 14 is first inserted into the contact piece 20 of the static contact group 19. Then, after starting the DC drive motor 15, the three rotating heads rotate simultaneously, thereby wiping off the powder and stains on the surfaces of the corresponding three contact pieces 20.

[0133] After inspection, it was found that regular wiping of the moving contact ring and static contact piece of the switch machine can greatly reduce the failure rate of the switch machine products during on-site use.

[0134] To sum up, compared with the existing technology, the fully automatic contact group wiping device for the switch provided by the present invention has a scientific structural design, can significantly improve the efficiency of wiping and maintenance of the switch contact group, ensure good wiping effect, and reduce the labor intensity of railway workers, which has great practical significance.

[0135] The fully automatic contact group wiping device for the switch machine provided by the present invention can clean and polish the surface of the contact group, so that the switch machine can work more reliably, effectively reduce the poor contact problem of the switch machine caused by inadequate contact wiping, and reduce the failure rate of the switch machine contact group when used on site.

[0136] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A fully automatic contact group wiping device for a switch machine, characterized in that: Including transmission part and power part; The transmission part includes an upper cover plate (1) and a lower cover plate (2) spaced apart from each other. The upper cover plate (1) and the lower cover plate (2) together form a mounting platform; There is a reserved vertical gap between the upper cover plate (1) and the lower cover plate (2); A first gear shaft (4) is vertically provided at the middle position of the installation platform; Wherein, the power part includes a DC drive motor (15); The upper end portion of the first gear shaft (4) protrudes upward from the top surface of the upper cover plate (1) and is connected to the output end of the DC drive motor (15); The lower end portion of the first gear shaft (4) protrudes downward from the bottom surface of the lower cover plate (2) and is connected to the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group; The moving contact group quick-change wiping head and the static contact group quick-change wiping head are used to rotate under the drive of a DC drive motor (15), thereby wiping the moving contact group (17) or the static contact group (19) on the switch machine respectively; The output end of the DC drive motor (15) is a magnetic attraction connector (16); The magnetic joint (16) has a gear shaft docking groove (160) with an open bottom; The upper end portion of the first gear shaft (4) is embedded in the gear shaft docking groove (160) and is connected to the gear shaft docking groove (160) by magnetic attraction; A second gear shaft (5) is vertically arranged at the left and right ends of the installation platform respectively; The upper ends of the two second gear shafts (5) are pivotally connected to the upper cover plate (1); Two second gear shafts (5) vertically penetrate the lower cover plate (2); The middle parts of the two second gear shafts (5) are pivotally connected to the lower cover plate (2); The lower ends of the two second gear shafts (5) protrude downward from the bottom surface of the lower cover plate (2) and are connected to the quick-change wiping head of the moving contact group or the quick-change wiping head of the static contact group; The first gear shaft (4) is located in the vertical gap between the upper cover plate (1) and the lower cover plate (2), and is fitted with a first gear (61); The two second gear shafts (5) are located in the vertical gap between the upper cover plate (1) and the lower cover plate (2), and are respectively fitted with a second gear (62); Both sides of the first gear (61) are respectively meshed with two second gears (62); The quick-change wiping heads installed on the first gear shaft (4) and the second gear shaft (5) are of the same type; A quick-change wiping head of a movable contact group comprises a first rotating head (10) and a first wiping sponge (11); The upper end of the first rotating head (10) is connected to the lower end of the first gear shaft (4) or the second gear shaft (5); A cylindrical cavity with an open bottom is provided on the inner side of the lower end of the first rotating head (10); The wiping sponge is provided on the side walls of the cavity, and a circle of the first wiping sponge (11) is bonded thereto in a surrounding manner; The inner side of the first wiping sponge (11) has a contact ring wiping cavity; A contact ring wiping cavity is used to accommodate a contact ring (18) that is arranged on the top of a moving contact group (17) on a switch machine and needs to be wiped; A quick-change wiping head for a static contact group includes a second rotating head (13) and a second wiping sponge (14); The upper end of the second rotating head (13) is connected to the lower end of the first gear shaft (4) or the second gear shaft (5); A second wiping sponge (14) is circumferentially bonded to the outer side wall around the lower end of the second rotating head (13); The second wiping sponge (14) is used for being inserted into the inner side of the contact piece (20) which is arranged on the upper part of the static contact group (19) on the switch machine and needs to be wiped.

2. The fully automatic contact group wiping device for a switch machine according to claim 1, characterized in that: A spacer (3) is provided at each of the left and right ends of the vertical gap between the upper cover plate (1) and the lower cover plate (2); The upper and lower sides of the cushion block (3) are in contact with the bottom surface of the upper cover plate (1) and the top surface of the lower cover plate (2) respectively.

3. The fully automatic contact group wiping device for a switch machine according to claim 2, characterized in that: The left and right ends of the upper cover plate (1) and the lower cover plate (2) are respectively connected via a vertically distributed fastening screw (12).

4. The fully automatic contact group wiping device for a switch machine according to claim 1, characterized in that: The first gear (61) and the second gear (62) are respectively connected to the first gear shaft (4) and the second gear shaft (5) via a flat key (8).

5. The fully automatic contact group wiping device for a switch machine according to claim 1, characterized in that: The lower ends of the first gear shaft (4) and the second gear shaft (5) are respectively equipped with an inlaid bump bead (9); The upper end of the first rotating head (10) is provided with a first gear shaft accommodating cavity with a top opening; The first gear shaft accommodating cavity is used to accommodate the lower end portion of the first gear shaft (4) or the second gear shaft (5); The side wall of the first gear shaft receiving cavity is provided with an inlaid bump bead receiving hole (90) at a position corresponding to the inlaid bump bead (9).

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