Safety switch mechanism and switch machine

Abstract

The utility model discloses a safety switch mechanism and a switch machine. The safety switch mechanism comprises a manual rod, the front end of the manual rod is pivoted with a front side panel of the switch machine lower shell; the manual rod is also connected with the movable plug frame; a movable plug is arranged on the top surface of the movable plug frame; the bottom surface of the top support plate of the movable plug rack is connected with the right end of the fixed plate; the other end of the fixing plate is hinged with the right end of the connecting rod; the left end of the connecting rod is hinged with the lower end of the connecting plate; a gear box hand-cranking shaft arranged on the front side of an original motor reducer gear box in the switch machine lower shell is located behind the connecting plate. The right side of the movable plug rack is provided with a static plug rack. A static plug is arranged on the static plug rack; and a movable plug at the top of the movable plug rack corresponds to a static plug at the upper part of the static plug rack. According to the utility model, the limiting mechanism is designed, so that the movable plug frame can be effectively limited during rotation, and the contact of the original contact seats in the movable plug switch machine is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a switch conversion equipment technical field, especially a kind of safety switch mechanism and switch machine. BACKGROUND

[0002] Switch machine is the important signal basic equipment for reliably switching turnout position, changing turnout opening direction, locking turnout point rail, and reflecting turnout position, which can ensure driving safety, improve transport efficiency and improve labor intensity of driving personnel.

[0003] At present, for ZD(J)9 type switch machine produced by Tianjin Railway Signal Co., Ltd., the safety switch arranged therein is equivalent to a switch in a circuit, and is connected in series in the control circuit (i.e., switch machine action circuit) of the ZD(J)9 type switch machine. When the switch is powered on to operate the turnout, the internal circuit (i.e., switch machine action circuit) of the switch machine is turned on, thereby driving the motor to rotate and the switch machine to pull the turnout.

[0004] When the safety switch is disconnected, the action circuit on the switch machine cannot be turned on, ensuring that the switch machine cannot act. Meanwhile, the original movable plug holder (i.e., movable plug group) on the safety switch is turned, thereby driving the connecting plate connected therewith on the safety switch to rotate. Since the connecting plate was previously in a state of blocking the rotation of the gear box hand shaft of the reducer in the switch machine, the connecting plate cancels the blocking of the gear box hand shaft of the motor reducer in the switch machine after rotation, so that the staff can connect the gear box hand shaft of the motor reducer in the switch machine by using the hand tool matched with the switch machine and rotate the hand tool, thereby manually operating the switch machine and controlling the switch machine to pull the turnout.

[0005] However, the existing safety switch design has the problem that the movable plug holder (i.e., movable plug group) on the safety switch cannot be limited in position during rotation, so that the opening angle of the movable plug (i.e., movable contact) arranged at the top of the movable plug holder is too large (e.g., the angle between the vertical central axis of the movable plug and the horizontal plane is greater than 90°) when the movable plug is counterclockwise rotated, causing the movable plug (i.e., movable contact) to collide with and contact the original contact seat (e.g., located on the left of the movable plug holder) in the switch machine adjacent to the safety switch, thereby causing the movable contact (i.e., movable plug) to be damaged due to frequent collision.

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

[0007] The utility model aims at the technical defects in the prior art, and provides a safety switch mechanism and switch machine.

[0008] For this purpose, the utility model provides a kind of safety switch mechanism, it includes: manual lever, movable plug holder, movable plug, connecting rod, connecting plate, static plug holder, static plug and fixed plate;

[0009] Wherein, the front end of manual lever, with the front side panel of the lower shell of switch machine located outside pivot joint;

[0010] Manual lever is also connected with movable plug holder;

[0011] The connecting position of movable plug holder and manual lever, the rear side of the front side panel of switch machine lower shell;

[0012] The top support plate top surface of movable plug holder is provided with movable plug;

[0013] The bottom surface of the top support plate of movable plug holder is connected with the right end of fixed plate;

[0014] The other end of fixed plate is hingedly connected with the right end of connecting rod;

[0015] Wherein, the left end of connecting rod is hingedly connected with the lower end of connecting plate;

[0016] The gear box hand crank shaft that the original motor reducer gear box front side of switch machine lower shell is provided with, is located in the rear of connecting plate;

[0017] Wherein, the right of movable plug holder is provided with static plug holder;

[0018] The upper part of static plug holder is provided with static plug;

[0019] Wherein, the movable plug of movable plug holder top is correspondingly provided with the static plug of static plug holder upper part;

[0020] Static plug holder is provided with the structure for limiting movable plug holder rotation angle on it.

[0021] In addition, the utility model also provides a kind of switch machine, it includes the safety switch mechanism as described above, and switch machine lower shell;

[0022] The front end of manual lever is pivotally connected with the front side panel of switch machine lower shell.

[0023] From the above technical scheme provided by the utility model can see, compared with the prior art, the utility model provides a safety switch mechanism and a switch machine, its structure design is scientific, it designs the limiting mechanism, makes the movable plug frame can effectively limit when rotating, avoids the movable plug (namely movable contact point) set on the top of movable plug frame to appear the problem of opening angle too big (for example, the angle between the horizontal plane is greater than 90 DEG) when rotating (for example, counterclockwise rotation), further avoids leading to movable plug (namely movable contact point) and the original contact seat in the switch machine (for example, on the right side of movable plug frame) adjacent safety switch on movable plug rotating track and bumping contact, avoids the problem of movable contact point (namely movable plug) damaging due to frequent bumping, has great practical significance. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1a The front view of the safety switch mechanism provided by the utility model is in the on state;

[0025] Figure 1b The front view of the safety switch mechanism provided by the utility model is in the on state;

[0026] Figure 1c The front view of the safety switch mechanism provided by the utility model is in the on state;

[0027] Figure 1d The front view of the safety switch mechanism provided by the utility model is in the on state;

[0028] Figure 2a The front view of the safety switch mechanism provided by the utility model is in the on state;

[0029] Figure 2b The front view of the safety switch mechanism provided by the utility model is in the on state;

[0030] Figure 3a 、 Figure 3b The front view and the top view of the manual rod respectively;

[0031] Figures 4a to 4c The front view (namely the front view), the top view and the left view of the movable plug frame respectively;

[0032] Figures 5a to 5c The front view (namely the front view), the top view and the left view of the movable plug respectively;

[0033] Figure 6 The front view of the connecting rod;

[0034] Figure 7 : front view of the connecting rod

[0035] Figure 8a : front view of the static plug holder

[0036] Figure 8b : perspective view of the static plug holder

[0037] Figure 9 : front view of the static plug

[0038] Fig. 10: front view (i.e. front view), top view and left view of the fixing plate

[0039] 1. manual rod; 2. dynamic plug holder; 3. dynamic plug; 4. connecting rod; 5. connecting plate

[0040] 6. static plug holder; 7. static plug; 8. fixing plate; 9. front side panel, 10. fastening nut, 11. cushion tube DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be understood that the orientations or positional relationships indicated by 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 are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be noted 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 skilled in the art, the specific meanings of the above terms in the present patent can be understood according to the specific circumstances.

[0044] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified.

[0045] Referring to Figures 1a to 1d 、 Figures 2a to 2b 、 Figures 3a to 3b 、 Figures 4a to 4c 、 Figures 5a to 5c 、 Figures 6 to 7 、 Figures 8a to 8b 、 Figure 9 、 Figures 10a to 10c The utility model provides a kind of safety switch mechanism, comprising: manual lever 1, dynamic plug holder 2, dynamic plug 3, connecting rod 4, connecting plate 5, static plug holder 6, static plug 7 and fixed plate 8;

[0046] Wherein, the front end of manual lever 1, with the front side panel 9 of the lower shell of switch machine located outside pivot joint (i.e. rotatably connected);

[0047] Manual lever 1 is also connected with dynamic plug holder 2 (for example, is inserted);

[0048] The connecting position of dynamic plug holder 2 and manual lever 1 is located at the rear side of the front side panel 9 of the lower shell of switch machine;

[0049] The top support plate 202 top surface of dynamic plug holder 2 is provided with dynamic plug 3;

[0050] The bottom surface of the top support plate 202 of dynamic plug holder 2 is connected (fixedly connected) with the right end of fixed plate 8;

[0051] The other end of fixed plate 8 is hinged (i.e. rotatably connected) with the right end of connecting rod 4;

[0052] Wherein, the left end of connecting rod 4 is hinged (i.e. rotatably connected) with the lower end of connecting plate 5;

[0053] The gear box hand crank shaft 120 set in the front side of the original motor reducer gear box 12 in the lower shell of switch machine is located at the rear of connecting plate 5;

[0054] Wherein, the right side of dynamic plug holder 2 is provided with static plug holder 6;

[0055] The upper part of static plug holder 6 is provided with static plug 7;

[0056] Wherein, dynamic plug 3 of the top of dynamic plug holder 2 is correspondingly arranged with static plug 7 of the upper part of static plug holder 6;

[0057] The moving plug 3 is used for being connected with (namely, being contacted with) the static plug 7 on the upper part of the static plug frame 6 when the moving plug frame 2 rotates clockwise under the operation of the manual lever 1, and being disconnected from the static plug 7 on the upper part of the static plug frame 6 when the moving plug frame 2 rotates anticlockwise.

[0058] The static plug frame 6 is provided with a structure for limiting the rotating angle of the moving plug frame 2.

[0059] In the utility model, the safety switch mechanism is connected in series in the original switch machine action circuit of the switch machine.

[0060] The safety switch mechanism controls the on-off of the original switch machine action circuit of the switch machine by controlling whether the moving plug 3 is contacted with the static plug 7 (specifically, whether the moving plug 3 is inserted into the static contact piece 70 on the static plug 7, the static contact piece 70 is similar to Y-shaped, whether the moving plug 3 is inserted into the opening part of the Y-shaped static contact piece 70, thereby controlling the on-off of the original switch machine action circuit of the switch machine).

[0061] It should be noted that the lower shell of the switch machine for installing the motor reducer, the safety switch and other equipment in the switch machine is a hollow shell with an open top, and the overall shape can be similar to a cube shape. A panel is arranged around the periphery of the lower shell of the switch machine, and the front side has a front panel 9 of the lower shell of the switch machine.

[0062] It should be noted that at present, the existing electric switch machines such as the ZD(J)9 type switch machine produced by Tianjin Railway Signal Co., Ltd. need to manually disconnect the safety switch of the switch machine first when manually operating, and then use the hand crank to connect the gear box hand crank shaft 120 on the original motor reducer gear box 12 in the switch machine, and then perform hand cranking operation (the purpose is to drive the electric switch machine reducer, so that the switch machine can switch the turnout position), and after the operation is completed and the hand crank is removed, the safety switch needs to be manually restored. The safety switch of the switch machine is connected in series in the switch machine action circuit, and after the safety switch is disconnected, the switch machine cannot be operated even if it is mistakenly powered in the control room. This personal protection scheme effectively protects the personal safety of the railway operator, and is widely used in the railway signal industry.

[0063] It should be noted that the safety switch mechanism is used for replacing the original safety switch in the existing electric switch machine such as ZD(J)9 type switch machine produced by Tianjin Railway Signal Co., Ltd., and the original safety switch in the existing switch machine also has a movable plug holder, a movable plug, a static plug holder and a static plug, whether the movable plug and the static plug are in conductive contact (i.e. whether they are connected) is controlled to control the on-off of the original switch machine action circuit of the switch machine.

[0064] In the utility model, when the movable plug 3 is connected to the static plug 7 (i.e. inserted into the static contact point sheet 70 on the static plug 7), the connecting plate 5 (i.e. the baffle) is located between the gear box hand crank 120 on the original motor reducer gear box 12 in the existing switch machine and the hand crank hole (located directly in front of the gear box hand crank 120) on the original switch machine cover of the switch machine, i.e. the gear box hand crank on the motor reducer is shielded at this time, so that the staff cannot use the external hand crank handle or other hand crank tools to hand crank the switch machine.

[0065] The hand crank hole on the original switch machine cover of the switch machine is located directly in front of the gear box hand crank 120 on the original motor reducer gear box 12 in the existing switch machine.

[0066] In the utility model, when the manual rod 1 is counterclockwise rotated, the movable plug holder 2 and the movable plug 3 on the movable plug holder 2 are counterclockwise rotated, the fixed plate 8 and the connecting rod 4 drive the connecting plate 5 (i.e. the baffle) to clockwise rotate, the connecting plate 5 (i.e. the baffle) is separated from the previous position, the connecting plate 5 (i.e. the baffle) is no longer located between the gear box hand crank 120 on the original motor reducer gear box 12 in the existing switch machine and the hand crank hole on the switch machine cover, i.e. the gear box hand crank 120 and the hand crank hole on the switch machine cover are no longer separated, at this time, the gear box hand crank on the motor reducer gear box 12 is no longer shielded, and the staff can use the matched hand crank handle located outside to connect the gear box hand crank, so as to hand crank the switch machine.

[0067] The hand crank hole on the switch machine cover is used for vertically inserting the hand crank tool (such as a hand crank handle) matched with the gear box hand crank of the motor reducer in the switch machine.

[0068] The switch machine cover is arranged on the top of the lower shell of the switch machine.

[0069] In the utility model, the manual rod 1 comprises a manually operated rod main body 100 arranged in a vertical direction.

[0070] The rear end of the manual lever body 100 is provided with a threaded rod part 103;

[0071] The front end of the manual lever body 100 is sequentially provided with a cylindrical part 101 and a square part 102 (the shape of this part is a cube) from front to back;

[0072] The front end of the cylindrical part 101 is connected to one end of an outer hand crank part 105;

[0073] Specifically, the cylindrical part 101 of the manual lever 1 longitudinally penetrates through the front side panel 9 of the lower shell of the switch machine;

[0074] The front side panel 9 of the lower shell of the switch machine is provided with a bearing mounting through hole longitudinally distributed;

[0075] The bearing mounting through hole is provided with a bearing;

[0076] The cylindrical part 101 of the manual lever 1 is connected to the inner ring of the bearing.

[0077] Specifically, the lower part of the movable plug holder 2 is longitudinally provided with a square hole 201;

[0078] The square part 102 of the manual lever 1 is connected (for example, inserted) with the square hole 201 of the lower part of the movable plug holder 2;

[0079] Further, the square part 102 of the manual lever 1 and the square hole 201 of the lower part of the movable plug holder 2 are connected by interference fit.

[0080] Specifically, the manual lever body 100 longitudinally penetrates through the square hole 201 of the lower part of the movable plug holder 2;

[0081] The threaded rod part 103 at the rear end of the manual lever body 100 is threadedly connected with a fastening nut 10;

[0082] The circumferential outer wall of the manual lever body 100 between the rear side of the lower part of the movable plug holder 2 and the front side of the fastening nut 10 is sleeved with a hollow grommet 11;

[0083] The fastening nut 10 abuts against (i.e., tightly contacts) the rear side of the grommet 11;

[0084] Further, the outer diameter of the fastening nut 10 is greater than the inner diameter of the grommet 11 and less than the outer diameter of the grommet 11.

[0085] Further, the threaded rod part 103 at the rear end of the manual lever body 100 is radially provided with an open pin insertion hole 104;

[0086] An open pin is inserted into the open pin insertion hole 104.

[0087] It should be noted that the split pin is installed in the split pin insertion hole 104 to prevent loosening.

[0088] In the utility model, specifically realize, fixed plate 8, including dynamic plug frame mounting plate part 801 and dynamic plug frame connecting rod butt joint part 802,

[0089] The front left upper portion of the dynamic plug frame mounting plate part 801 is connected with the right end of the dynamic plug frame connecting rod butt joint part 802.

[0090] Dynamic plug frame 2, including dynamic plug frame vertical support plate 203 and dynamic plug frame top support plate 202,

[0091] Wherein, the front end of the longitudinally distributed dynamic plug frame top support plate 202 is connected with the upper rear end of the dynamic plug frame vertical support plate 203.

[0092] Specifically, the left view shape of the dynamic plug frame 2 is inverted "L";

[0093] The front view shape of the dynamic plug frame mounting plate part 801 is "L" shape.

[0094] Specifically, the right side surface of the dynamic plug frame vertical support plate 203 of the dynamic plug frame 2 is the stop surface 204.

[0095] Specifically, the upper and lower sides of the dynamic plug frame top support plate 202 are respectively provided with the dynamic plug frame 3 and the dynamic plug frame mounting plate part 801 of the fixed plate 8.

[0096] Further, the right end upper surface of the dynamic plug frame mounting plate part 801 of the fixed plate 8 is in contact with the bottom surface of the dynamic plug frame top support plate 202.

[0097] The top surface of the dynamic plug frame top support plate 202 is in contact with the bottom surface of the dynamic plug 3.

[0098] Further, the dynamic plug 3, the dynamic plug frame 2 and the fixed plate 8 are fixedly connected through the first fastening screw.

[0099] Further, two dynamic plug frame through holes 205 distributed in front and back are vertically and penetratingly arranged on the dynamic plug frame top support plate 202.

[0100] The dynamic plug frame mounting plate part 801 of the fixed plate 8 is provided with two fixed plate butt joint through holes 803 at positions corresponding to the two dynamic plug frame through holes 205.

[0101] The front and rear ends of the dynamic plug 3 are provided with vertically penetrating dynamic plug threaded through holes 301 at positions corresponding to the two dynamic plug frame through holes 205.

[0102] The first fastening screw is sequentially threaded through the fixed plate butt joint hole 803 on the fixed plate 8 and the movable plug-in frame hole 205 on the movable plug-in frame top support plate 202 from bottom to top, and is in threaded fixed connection with the movable plug threaded hole 301 of the corresponding movable plug 3.

[0103] In a specific implementation, the left end of the connecting rod butt joint portion 802 of the fixed plate 8 is hingedly connected (i.e., rotatably connected) to the right end of the connecting rod 4 through a first pin;

[0104] Further, the left end of the connecting rod butt joint portion 802 of the fixed plate 8 is provided with a fixed plate butt joint pin hole 802;

[0105] The right end of the connecting rod 4 is provided with a first connecting rod pin hole 401 corresponding to the fixed plate butt joint pin hole 802 on the fixed plate 8;

[0106] The fixed plate butt joint pin hole 802 and the first connecting rod pin hole 401 are connected through a first pin.

[0107] In a specific implementation, the left end of the connecting rod 4 is hingedly connected (i.e., rotatably connected) to the lower end of the connecting plate 5 through a second pin;

[0108] Further, the lower end of the connecting plate 5 is provided with a first connecting plate butt joint pin hole 501;

[0109] The left end of the connecting rod 4 is provided with a second connecting rod pin hole 401 corresponding to the first connecting plate butt joint pin hole 501 on the connecting plate 5;

[0110] The first connecting plate butt joint pin hole 501 and the second connecting rod pin hole 401 are connected through a second pin.

[0111] In the utility model, in a specific implementation, the connecting plate 5 is further threadedly fixedly connected with the reserved threaded hole on the motor reducer gear box 12 shell arranged in the lower shell of the switch machine outside the position above the hinged position of the connecting plate 5 and the left end of the connecting rod 4 through the longitudinally distributed second fastening screw;

[0112] In a specific implementation, the lower end of the connecting plate 5 is provided with a second connecting plate butt joint mounting hole 502;

[0113] The second connecting plate butt joint mounting hole 502 is threadedly fixedly connected with the reserved threaded hole on the motor reducer gear box 12 shell arranged in the lower shell of the switch machine outside through the longitudinally distributed second fastening screw;

[0114] Further, the diameter of the second connecting plate butt joint mounting hole 502 is greater than the diameter of the first connecting plate butt joint pin hole 501.

[0115] Further, the interval between the second connecting plate butt joint hole 502 and the second connecting rod pin hole 401 at the left end of the connecting rod 4 is greater than the interval between the first connecting plate butt joint pin hole 501 and the second connecting rod pin hole 401 at the left end of the connecting rod 4.

[0116] In the utility model, specifically realize, static plug frame 6, including static plug frame vertical support plate 601 and static plug frame top support plate 605,

[0117] The upper rear end of the static plug frame vertical support plate 601 is connected with the front end of the longitudinally distributed static plug frame top support plate 605;

[0118] The front end upper surface of the static plug frame top support plate 605 is provided with a static plug 7;

[0119] It should be noted that the static plug frame 6 is an L-shaped structure.

[0120] Specifically, the static plug 7 is fixedly connected with the static plug frame top support plate 605 through a third fastening screw.

[0121] Specifically, the left lower end of the static plug frame vertical support plate 601 is provided with a left protruding limiting lug 606;

[0122] The limiting lug 606 is correspondingly arranged with the stop surface 204 on the right side of the dynamic plug frame vertical support plate 203 of the dynamic plug frame 2;

[0123] It should be noted that the limiting lug 606 is arranged on the counterclockwise rotation track (path) of the stop surface 204 of the dynamic plug frame vertical support plate 203 of the dynamic plug frame 2.

[0124] It should be noted that the limiting lug 606 is used for being in contact with the stop surface 204 on the right side of the dynamic plug frame vertical support plate 203 when the dynamic plug frame vertical support plate 203 of the dynamic plug frame 2 rotates counterclockwise, limiting the rotation angle of the dynamic plug frame 2, and preventing the dynamic plug frame 2 and the dynamic plug 3 (i.e. dynamic contact point) thereon from continuing to rotate counterclockwise.

[0125] Further, the front view shape of the limiting lug 606 is a right trapezoid;

[0126] The height of the left side inclined surface of the limiting lug 606 decreases from left to right in sequence;

[0127] Further, the included angle between the left side inclined surface of the limiting lug 606 and the bottom surface of the limiting lug 606 is an obtuse angle, and is preferably 105°.

[0128] Specifically, the static plug frame vertical support plate 601 is fixedly connected with the front side panel 9 of the lower shell of the switch machine outside through a fourth screw;

[0129] Further, the upper and lower ends of the static plug frame vertical support plate 601 are respectively provided with a first static plug threaded hole 602;

[0130] The front side panel 9 of the lower shell of the switch machine is provided with two front side panel through holes at positions corresponding to the two first static plug threaded holes 602.

[0131] The fourth screw is threadedly fixed and linked with the first static plug threaded hole 602 on the static plug vertical support plate 601 at the position corresponding to the front side panel through hole from front to back.

[0132] In a specific implementation, the rear end of the static plug frame top support plate 605 of the static plug frame 6 is fixedly connected with a snap 13 (connected by riveting).

[0133] In a specific implementation, the rear side of the lower end of the static plug vertical support plate 601 is connected with the stop iron 607 through a rivet.

[0134] Further, the lower end of the static plug vertical support plate 601 is longitudinally provided with two second rivet mounting holes 603 distributed in left and right directions.

[0135] The stop iron is provided with a stop iron rivet mounting hole at a position corresponding to the two second rivet mounting holes 603.

[0136] The stop iron rivet mounting hole on the stop iron is riveted with the second rivet mounting hole 603 on the static plug vertical support plate 601 through a rivet.

[0137] It should be noted that, referring to Figure 8b As shown in the figure, the stop iron 607 is a cuboid-shaped iron stop block, and the upper portion of the stop iron 607 is provided with two stop iron rivet mounting holes.

[0138] In order to more clearly understand the technical scheme of the utility model, the working principle of the utility model will be described below.

[0139] Firstly, the safety switch mechanism is previously connected in series in the original switch machine action circuit of the switch machine.

[0140] In the use process, when the manual rod 1 is rotated clockwise, the dynamic plug frame 2 and the dynamic plug 3 on the dynamic plug frame 2 are driven to rotate clockwise, so that the dynamic plug 3 is connected to the static plug 7, the original switch machine action circuit of the switch machine is connected, and at the same time, the connecting handle 5 is driven to shield the gear box hand shaft 120 of the original motor reducer gear box 12 in the switch machine, so as to prohibit manual operation.

[0141] In use, when the manual lever 1 is counterclockwise rotated, the movable plug frame 2 and the movable plug 3 on the movable plug frame 2 are counterclockwise rotated, so that the movable plug 3 is separated from the static plug 7, the original switch action circuit of the switch machine is disconnected, and the connecting plate 5 is driven away from the gear box hand shaft 120 of the motor reducer gear box 12, so that the switch machine can be manually operated.

[0142] It should be noted that when the movable plug 3 is inserted into the static contact piece 70 of the static plug 7, the connecting plate 5 (i.e. the baffle) is located between the gear box hand shaft of the motor reducer and the hand hole of the switch machine cover, so that the gear box hand shaft of the motor reducer is shielded, and the switch machine cannot be manually switched.

[0143] When the manual lever 1 is counterclockwise rotated, the movable plug frame 2 and the movable plug 3 on the movable plug frame 2 are counterclockwise rotated, the connecting plate 5 (i.e. the baffle) is counterclockwise rotated, and the connecting plate 5 (i.e. the baffle) is separated from the previous position, so that the connecting plate 5 (i.e. the baffle) is no longer located between the gear box hand shaft 120 of the motor reducer gear box 12 and the hand hole of the switch machine cover, and the gear box hand shaft of the motor reducer is no longer shielded, so that the staff can use the matched hand tool (e.g. a hand crank) to connect the gear box hand shaft, and the switch machine can be manually switched.

[0144] The hand hole of the switch machine cover is used for vertically inserting the hand tool (e.g. a hand crank) matched with the gear box hand shaft 120 of the motor reducer gear box 12.

[0145] The switch machine cover is arranged on the top of the lower shell of the switch machine.

[0146] Based on the safety switch mechanism provided by the utility model, the utility model also provides a switch machine, which comprises the safety switch mechanism and a lower shell of the switch machine.

[0147] The front end of the manual lever 1 is pivotally connected to the front side panel 9 of the lower shell of the switch machine.

[0148] Compared with the prior art, the safety switch mechanism and the switch machine have the following beneficial effects:

[0149] 1. According to the utility model, in the maintenance process of the switch machine, the fixed plate and the connecting rod drive the baffle (the baffle is the connecting plate 5) to rotate when the moving and static plugs are disconnected during the rotation of the manual lever, and the connecting plate rotates away from the original position, so that the gear box hand shaft can be operated, the gear box hand shaft is prevented from being misoperated without power-off, and the safe operation function is realized.

[0150] 2. According to the utility model, the limiting boss 606 is arranged on the left side of the lower end of the static plug frame, when the safety switch is disconnected, the manual lever 1 is rotated, the dynamic plug frame 2 is driven to rotate to the left (i.e. counterclockwise), the right side surface (i.e. the stop surface 204) of the lower end of the dynamic plug frame 2 is stopped by the limiting boss 606 on the left side of the lower end of the static plug frame 6, the dynamic plug 3 is prevented from rotating to a certain angle, the dynamic contact of the safety switch is prevented from contacting the contact seat, and the limiting function is realized.

[0151] 3. According to the utility model, the safety risk caused by the misoperation of the gear box hand shaft without power-off can be realized, the limiting boss is arranged on the static plug frame, the dynamic contact of the safety switch is prevented from contacting the contact seat, the utility model has the advantages of reasonable structure, convenient operation and realized safety function.

[0152] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principle of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

Claims

1. A safety switch mechanism, characterized in that, include: Manual lever (1), moving plug bracket (2), moving plug (3), connecting rod (4), connecting plate (5), stationary plug bracket (6), stationary plug (7) and fixing plate (8); The front end of the manual lever (1) is pivotally connected to the front panel (9) of the lower housing of the switch machine located on the outside; The manual lever (1) is also connected to the power plug bracket (2); The connection point between the movable plug bracket (2) and the manual lever (1) is located on the rear side of the front panel (9) of the lower housing of the switch machine; A movable plug (3) is provided on the top surface of the top support plate (202) of the movable plug bracket (2); The bottom surface of the top support plate (202) of the movable plug bracket (2) is connected to the right end of the fixed plate (8); The other end of the fixed plate (8) is hinged to the right end of the connecting rod (4); The left end of the connecting rod (4) is hinged to the lower end of the connecting plate (5); The gearbox hand crank shaft (120) installed on the front side of the original motor reducer gearbox (12) inside the lower housing of the switch machine is located behind the connecting plate (5); A static plug bracket (6) is provided on the right side of the moving plug bracket (2). A static plug (7) is provided on the upper part of the static plug bracket (6); Among them, the movable plug (3) at the top of the movable plug bracket (2) is correspondingly set with the static plug (7) at the top of the static plug bracket (6); The stationary plug bracket (6) is provided with a structure for limiting the rotation angle of the dynamic plug bracket (2).

2. The safety switch mechanism as described in claim 1, characterized in that, Manual lever (1), including a manual lever body (100) distributed longitudinally. The rear end of the manual lever body (100) is provided with a threaded rod part (103). The front end of the manual lever body (100) is provided with a cylindrical part (101) and a square part (102) from front to back. The front end of the cylindrical part (101) is connected to one end of an outer hand crank part (105).

3. The safety switch mechanism as described in claim 2, characterized in that, The cylindrical part (101) of the manual lever (1) extends longitudinally through the front panel (9) of the lower housing of the switch machine. On the front panel (9) of the lower housing of the switch machine, there are longitudinally distributed bearing mounting through holes; A bearing is installed inside the bearing mounting hole; The cylindrical part (101) of the manual lever (1) is connected to the inner ring of the bearing.

4. The safety switch mechanism as described in claim 2, characterized in that, A square hole (201) is longitudinally provided in the lower part of the plug bracket (2). The square part (102) of the manual lever (1) is connected to the square hole (201) at the bottom of the manual plug bracket (2); And / or, The manual lever body (100) passes longitudinally through the square hole (201) at the bottom of the manual plug bracket (2); The threaded rod portion (103) at the rear end of the manual lever body (100) is threadedly connected to a fastening nut (10); A hollow pad tube (11) is fitted on the circumferential outer wall of the manual lever body (100) located between the lower rear side of the manual plug bracket (2) and the front side of the fastening nut (10). The fastening nut (10) abuts against the rear side of the washer tube (11).

5. The safety switch mechanism as described in claim 4, characterized in that, The square part (102) of the manual lever (1) and the square hole (201) at the bottom of the manual plug bracket (2) are connected by an interference fit; And / or, The outer diameter of the fastening nut (10) is larger than the inner diameter of the washer tube (11) and smaller than the outer diameter of the washer tube (11); And / or, A cotter pin insertion hole (104) is provided radially through the threaded rod part (103) at the rear end of the manual lever body (100). A cotter pin is inserted into the cotter pin insertion hole (104).

6. The safety switch mechanism as described in claim 1, characterized in that, The fixing plate (8) includes a movable plug bracket mounting plate (801) and a movable plug bracket connecting rod docking part (802). The upper left part of the front side of the moving plug bracket mounting plate (801) is connected to the right end of the moving plug bracket connecting rod docking part (802); The movable plug frame (2) includes a vertical support plate (203) and a top support plate (202) for the movable plug frame. The front end of the vertically distributed top support plate (202) of the moving plug frame is connected to the upper rear end of the vertical support plate (203) of the moving plug frame. The right side of the vertical support plate (203) of the movable plug bracket (2) is the stop surface (204). On the upper and lower sides of the top support plate (202) of the movable plug bracket, there are movable plug (3) and fixed plate (8) mounting plate (801) respectively. The movable plug (3), the movable plug bracket (2), and the fixing plate (8) are fixedly connected by the first fastening screw.

7. The safety switch mechanism as described in claim 1, characterized in that, The left end of the connecting rod mating part (802) of the fixed plate (8) is hinged to the right end of the connecting rod (4) by a first pin; The left end of the connecting rod (4) is hinged to the lower end of the connecting plate (5) by a second pin; And / or, The connecting plate (5) is located above the hinged position with the left end of the connecting rod (4), and is also threadedly fixed to the threaded hole on the housing of the motor reducer gearbox (12) located in the lower housing of the switch machine located outside, by a second longitudinally distributed fastening screw.

8. The safety switch mechanism as described in any one of claims 1 to 7, characterized in that, The static plug bracket (6) includes a static plug bracket vertical support plate (601) and a static plug bracket top support plate (605). The upper rear end of the vertical support plate (601) of the static plug bracket is connected to the front end of the longitudinally distributed top support plate (605) of the static plug bracket. A static plug (7) is provided on the upper front surface of the top support plate (605) of the static plug bracket. A limiting protrusion (606) protruding to the left is provided at the lower left side of the vertical support plate (601) of the static plug bracket. The limiting protrusion (606) is correspondingly set to the stop surface (204) on the right side of the vertical support plate (203) of the moving plug bracket (2).

9. The safety switch mechanism as described in claim 8, characterized in that, The front view shape of the limiting protrusion (606) is a right trapezoid; The height of the left inclined surface of the limiting protrusion (606) decreases from left to right. And / or, The angle between the left inclined surface of the limiting protrusion (606) and the bottom surface of the limiting protrusion (606) is 105°; And / or, The vertical support plate (601) of the static plug frame is fixedly connected to the front panel (9) of the lower housing of the switch machine located on the outside by the fourth screw.

10. A switch machine, characterized in that, Includes the safety switch mechanism as described in any one of claims 1 to 9, and the lower housing of the switch machine; The front end of the manual lever (1) is pivotally connected to the front panel (9) of the lower housing of the switch machine.

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