Dismounting device for main shaft group of switch machine

Abstract

The invention discloses a dismounting device for a main shaft group of a switch machine. The dismounting device comprises a lead screw part and a fixed part, the screw rod part comprises a screw rod and a screw rod nut; the screw rod comprises a screw rod column body; the right end part of the screw rod column body is connected with the left end of the screw rod head part; a screw rod tail end driving part is arranged at the left end part of the screw rod column body; the lead screw nut comprises an outer hexagonal part and an annular protruding part and is provided with a first internal thread through hole. The first external thread of the screw rod column body is connected with the first internal thread through hole; the fixed part comprises a connecting plate; the connecting plate is provided with an open through groove; the lead screw penetrates through the open through groove; the right upper end of the connecting plate is connected with the supporting plate; the right lower end of the connecting plate is connected with the bottom support; front and rear ends of the top of the support plate are connected with hooks; the hook is used for being hung on an external electric switch machine; and the bottom support is used for jacking an external electric switch machine. According to the invention, the main shaft group of the switch machine can be conveniently and reliably dismounted, parts are prevented from being damaged, the dismounting quality is ensured, and the service life of the switch machine is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of railway turnout conversion equipment, in particular to a disassembly device for a main shaft group of a switch machine. Background Art

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

[0003] The ZD6 series electric switch machines produced by Tianjin Railway Signal Co., Ltd. involve various models and are widely used in railway stations. With the increase in railway transportation volume, the operation frequency of electric switch machines is getting higher and higher. In order to better ensure the long-term and stable operation of the ZD6 series electric switch machines, it is necessary to regularly dismantle and repair the ZD6 series electric switch machines, or change some parts of the ZD6 series electric switch machines on the railway line, such as the main shaft group.

[0004] See also Figure 8 As shown, for the electric switch machine 12, the main shaft assembly thereon includes a main shaft 9 and parts such as a main shaft sleeve 9002 and a needle bearing 9003 fixedly mounted on the main shaft 9. The electric switch machine 12 (for example, a ZD6-D type DC electric switch machine) has a lower housing 10 with an open top. A circular main shaft docking hole 1201 is opened on a side panel of the lower housing 10; the main shaft docking hole 1201 is arranged in correspondence with the main shaft 9 in the electric switch machine 12, for exposing the main shaft 9; the main shaft 9 has a main shaft internal threaded hole 9001 at one end thereof facing the main shaft docking hole 1201.

[0005] It should be noted that a main shaft sleeve and a needle bearing are fixedly installed on the main shaft 9, wherein the main shaft sleeve 9002 arranged on the outer side of the main shaft 9 is an interference fit with the main shaft docking hole 1201, and the needle bearing 9003 arranged on the outer side of the main shaft 9 is an interference fit with the bearing mounting hole 1001 arranged on the bottom shell 10, the main shaft 9 is connected to the bottom shell 10 of the electric switch machine 12 through the main shaft sleeve 9002 and the needle bearing 9003, and the main shaft 9 is connected to the reducer box in the electric switch machine 12 through the starting plate, wherein the main shaft 9 and the starting plate are a clearance fit, and during the operation of the electric switch machine 12, the reducer drives the main shaft 9 to rotate through the starting plate.

[0006] At present, the existing disassembly method of the main shaft assembly of the electric switch machine is unreasonably designed, and the main shaft assembly of the electric switch machine cannot be disassembled conveniently and reliably, which easily damages the parts (i.e., the main shaft assembly), thereby leaving safety hazards to the operation of the electric switch machine and affecting the service life of the electric switch machine.

[0007] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the invention

[0008] The purpose of the present invention is to provide a disassembly device for a main shaft assembly of a switch machine in view of the technical defects in the prior art.

[0009] To this end, the present invention provides a disassembly device for a switch machine main shaft assembly, which comprises: a screw rod part and a fixing part;

[0010] The screw rod part includes a screw rod and a screw rod nut;

[0011] The screw rod comprises: a screw rod column, a screw rod head, a screw rod tail end driving part and a transition rod;

[0012] The right end of the laterally distributed screw rod column is connected to the left end of the transition rod;

[0013] The right end of the transition rod is connected to the left end of the screw rod head;

[0014] The left end of the screw rod column is provided with a screw rod tail end driving part;

[0015] The screw nut comprises an outer hexagonal portion and an annular raised portion;

[0016] The right side of the outer hexagonal portion is fixedly connected to the left side of the annular raised portion;

[0017] A first internal thread through hole is transversely provided on the outer hexagonal portion and the annular protruding portion;

[0018] The screw rod column on the screw rod has a first external thread, which is threadedly connected to the first internal thread through hole on the screw rod nut;

[0019] The fixed part includes: a connecting plate, a supporting plate, a hook and a bottom bracket;

[0020] A long open slot is provided at the middle of the vertically distributed connecting plate;

[0021] An open through slot for the screw rod to pass through laterally;

[0022] The upper right end of the connecting plate is fixedly connected to the supporting plate;

[0023] The right lower end of the connecting plate is fixedly connected to the bottom bracket;

[0024] The front and rear ends of the top of the support plate are connected to a hook;

[0025] A hook for hanging on an external electric switch machine;

[0026] The right side of the base is used to tighten the external electric switch machine.

[0027] It can be seen from the technical solution provided by the present invention that, compared with the prior art, the present invention provides a disassembly device for the main shaft group of the switch machine, which has a scientific structural design and can conveniently and reliably disassemble the main shaft group of the switch machine to avoid damage to parts (i.e., the main shaft group). It can ensure the disassembly quality of the main shaft group of the switch machine, thereby ensuring the safe operation of the electric switch machine and extending the service life of the electric switch machine, which has great practical significance.

[0028] By applying the present invention, the main shaft assembly of the electric switch machine on or off the railway line that is being repaired can be conveniently and reliably disassembled, the disassembly quality is guaranteed, and the potential safety hazards caused by poor disassembly are eliminated.

[0029] After inspection, the present invention can be applied to the disassembly of various different types of main shaft groups of the ZD6 series electric switch machines produced by Tianjin Railway Signal Co., Ltd. The present invention connects the screw part with the thread of the main shaft group, hangs the fixed part on the bottom shell of the ZD6 electric switch machine, and adjusts the stroke of the screw nut, so that the main shaft group of the ZD6 series electric switch machine can be disassembled from the bottom shell, thereby avoiding damage to related parts and improving the disassembly quality of the ZD6 electric switch machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a disassembly device for a main shaft assembly of a switch machine provided by the present invention;

[0031] Figure 2 A schematic diagram of the three-dimensional structure of a screw rod in a disassembly device for a switch machine main shaft assembly provided by the present invention;

[0032] Figure 3 A schematic diagram of the three-dimensional structure of a screw nut in a disassembly device for a switch machine main shaft assembly provided by the present invention;

[0033] Figure 4 A schematic diagram of the three-dimensional structure of a connecting plate in a disassembly device for a switch machine main shaft assembly provided by the present invention;

[0034] Figure 5 A schematic diagram of the three-dimensional structure of a support plate in a disassembly device for a switch machine main shaft assembly provided by the present invention;

[0035] Figure 6 A schematic diagram of the three-dimensional structure of a hook in a disassembly device for a switch machine main shaft assembly provided by the present invention;

[0036] Figure 7 A schematic diagram of the three-dimensional structure of a bottom bracket in a disassembly device for a switch machine main shaft assembly provided by the present invention;

[0037] Figure 8A disassembly device for a main shaft assembly of a switch machine provided by the present invention is a schematic diagram of the working state of disassembly operation of the main shaft assembly of an existing model (ZD6-D model) of a ZD6 series electric switch machine;

[0038] In the figure: 1-screw, 2-screw nut, 3-connecting plate, 4-support plate, 5-hook;

[0039] 6-bottom bracket, 7-first bolt, 8-second bolt, 9-main shaft, 10-lower housing;

[0040] 11-Third bolt. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] See also Figures 1 to 8, the present invention provides a disassembly device for a switch machine main shaft assembly, comprising: a screw rod part and a fixing part;

[0046] The screw rod part includes a screw rod 1 and a screw rod nut 2;

[0047] See also Figure 2 As shown, the screw rod 1 comprises: a screw rod column 101, a screw rod head 102, a screw rod tail end driving part 103 and a transition rod 104;

[0048] The right end of the laterally distributed screw rod column 101 is connected to the left end of the transition rod 104;

[0049] The right end of the transition rod 104 is connected to the left end of the screw rod head 102;

[0050] The left end of the screw rod column 101 is provided with a screw rod tail end driving part 103;

[0051] See also Figure 3 As shown, the screw nut 2 includes an outer hexagonal portion 2001 and an annular raised portion 2003;

[0052] The right side of the outer hexagonal portion 2001 is fixedly connected to the left side of the annular raised portion 2003;

[0053] A first internal thread through hole 2002 is transversely provided on the outer hexagonal portion 2001 and the annular raised portion 2003;

[0054] The screw rod column 101 on the screw rod 1 has a first external thread 1001 which is threadedly connected to the first internal thread through hole 2002 on the screw rod nut 2 .

[0055] The fixed part includes: a connecting plate 3, a supporting plate 4, a hook 5 and a bottom bracket 6;

[0056] A vertically distributed, long strip-shaped opening through slot 3001 is provided at the middle section of the vertically distributed connecting plate 3;

[0057] The open through slot 3001 is used to pass the screw rod 1 transversely;

[0058] The upper right end of the connecting plate 3 is fixedly connected to the horizontally distributed supporting plate 4 by two second bolts 8;

[0059] The right lower end of the connecting plate 3 is fixedly connected to the horizontally distributed bottom bracket 6 by two third bolts 11;

[0060] The front and rear ends of the top of the support plate 4 are connected to a hook 5 through two first bolts 7 respectively;

[0061] A hook 5, used for hanging on an external electric switch machine 12;

[0062] The right side of the bottom bracket 6 is used to tighten the external electric switch machine 12.

[0063] In the present invention, in a specific implementation, the hook 5 is used to hang on the top of a side panel of the lower housing 10 with an open top of the external electric switch machine 12; the side panel is provided with a circular main shaft docking hole 1201;

[0064] The main shaft docking hole 1201 is arranged correspondingly to the main shaft 9 in the electric switch machine 12, and is used to expose the main shaft 9; the main shaft 9 has a main shaft internal threaded hole 9001 at one end facing the main shaft docking hole 1201;

[0065] The screw head 102 is used to be threadedly fixedly connected with the spindle internal thread hole 9001 on the spindle 9;

[0066] The outer hexagonal portion 2001 of the screw part is used to make the screw nut 2 rotate relative to the screw 1 under the rotational drive of an external force after the screw head 102 of the screw 1 is threadedly fixedly connected with the spindle internal threaded hole 9001 on the spindle 9 and the position remains unchanged, so as to contact and squeeze the left side wall of the connecting plate 3, and apply a pulling force toward the screw head 102 of the screw 1 to the spindle 9 and the spindle sleeve 9002 and the needle bearing 9003 fixedly installed on the outer side of the spindle 9;

[0067] It should be noted that the spindle assembly includes a spindle 9 and parts such as a spindle sleeve 9002 and a needle bearing 9003 fixedly mounted on the spindle 9.

[0068] In a specific implementation, the right side of the base 6 is used to press against a side panel of the lower housing 10 of the electric switch machine 12 (ie, a side panel provided with the main shaft docking hole 1201 ).

[0069] In specific implementation, the front and rear ends of the support plate 4 protrude from the front and rear sides of the connecting plate 3 respectively;

[0070] In the present invention, for specific implementation, see Figure 2 As shown, a circular first through hole 1003 is provided on the screw rod tail end driving part 103;

[0071] The first through hole 1003 is used for inserting an external tool, and the external tool is used for rotating the screw rod 1 .

[0072] In the present invention, in a specific implementation, the circumferential outer wall of the screw column 101 is provided with a first external thread 1001;

[0073] The circumferential outer wall of the screw head 102 is provided with a second outer thread 1002;

[0074] The second external thread 1002 on the screw head 102 is threadedly fixedly connected to the spindle internal thread hole 9001 on the spindle 9.

[0075] Furthermore, the screw column 101, the screw head 102, the screw tail end driving part 103 and the transition rod 104 are integrally formed.

[0076] Furthermore, the overall shape of the transition rod 104 is a truncated cone shape.

[0077] Furthermore, the transverse central axes of the screw column 101, the screw head 102, the screw tail end driving portion 103 and the transition rod 104 are located on the same straight line.

[0078] Furthermore, the central axis of the first through hole 1003 is perpendicular to the transverse central axis of the screw column 101 .

[0079] In the present invention, in a specific implementation, the outer diameter of the annular protrusion 200 is greater than the longitudinal width of the open through slot 3001. Therefore, when the annular protrusion 200 contacts the connecting plate 3, it can be pressed against the side wall of the connecting plate 3.

[0080] In the present invention, in a specific implementation, the outer hexagonal portion 2001 and the annular raised portion 2003 are integrally formed.

[0081] Furthermore, the central axis of the first internal threaded hole 2002 and the central axis of the screw nut 2 are in the same straight line.

[0082] In the present invention, in a specific implementation, the shape of the opening slot 3001 on the connecting plate 3 is an oblong (i.e., an ellipse);

[0083] It should be noted that the open slot 3001 is in the shape of an elongated strip, specifically an elliptical shape. This design is to allow the device of the present invention to match various types of switch machines. Sometimes, the vertical heights of the spindles installed on different types of switch machines are different, and the vertical distances between the spindle and the top of the lower housing 10 with an open top of the electric switch machine are different. Through this elongated open slot 3001, the height and position of the screw rod 1 can be adjusted accordingly, so that the screw rod 1 can be connected to the spindles of different heights of various types of switch machines, thereby completing the disassembly of the spindle group.

[0084] In the present invention, for specific implementation, see Figure 4 As shown, two second through holes 3002 are respectively provided at the upper and lower ends of the connecting plate 3;

[0085] See also Figure 5 As shown, two second internal threaded through holes 4001 are vertically arranged at the front and rear ends of the support plate 4;

[0086] Two third internal thread through holes 4002 are horizontally penetrated in the middle of the support plate 4;

[0087] Two third internal thread through holes 4002 are arranged corresponding to the two second through holes 3002 at the upper end of the connecting plate 3;

[0088] After the second bolt 8 passes through the second through hole 3002 at the upper end of the connecting plate 3, it is threadedly fixedly connected with the third internal thread through hole 4002 at the middle of the corresponding supporting plate 4. Therefore, the connecting plate 3 and the supporting plate 4 can be reliably connected and fixed.

[0089] Furthermore, the two second through holes 3002 located at the upper end and the lower end of the connecting plate 3 are respectively distributed symmetrically front to back and are both circular in shape.

[0090] Furthermore, the two second internal threaded through holes 4001 respectively provided at the front end and the right end of the support plate 4 are symmetrically distributed;

[0091] The two third internal thread through holes 4002 in the middle of the support plate 4 are symmetrically distributed front to back;

[0092] In specific implementation, each hook 5 includes a vertical plate 5001 and a horizontal plate 5003;

[0093] The upper end of the vertical plate 5001 is vertically connected to the right end of the horizontal plate 5003;

[0094] The horizontal plate 5003 is provided with two third circular through holes 5002 which penetrate vertically;

[0095] The two third through holes 5002 respectively provided on the two hooks 5 are arranged correspondingly to the two second internally threaded through holes 4001 respectively provided at the front and rear ends of the support plate 4;

[0096] After the first bolt 7 vertically passes through the third through hole 5002, it is threadedly fixedly connected with the two second internal thread through holes 4001 on the corresponding position of the support plate 4. Therefore, the present invention can reliably fix the hook 5 to the support plate 4.

[0097] In a specific implementation, two fourth internal thread through holes 6001 are horizontally penetrated on the bottom bracket 6;

[0098] Two fourth internal thread through holes 6001 are arranged corresponding to the two second through holes 3002 at the lower end of the connecting plate 3;

[0099] After the third bolt 11 passes through the second through hole 3002 at the lower end of the connecting plate 3, it is threadedly fixedly connected with the fourth internal thread through hole 6001 on the corresponding position of the bottom bracket 6. Therefore, the bottom bracket 6 and the connecting plate 3 can be reliably connected and fixed.

[0100] Furthermore, the two fourth internal threaded through holes 6001 on the base 6 are symmetrically distributed front to back.

[0101] In the present invention, in specific implementation, the device of the present invention can match the electric switch machine with a disassembled main shaft group, which is a mature and widely used switch machine in the prior art, and can be an electric switch machine of the ZD6 series produced by Tianjin Railway Signal Co., Ltd. For example, it can be a ZD6-D DC electric switch machine produced by Tianjin Railway Signal Co., Ltd.

[0102] It should be noted that the function of the DC electric switch machine is: the DC motor on it amplifies the output torque after being decelerated by the reducer, driving the main shaft group to rotate. The main shaft group pulls the pull rod on the turnout through the gear and rack mechanism to drive the turnout point rail, so that the turnout point rail fits or separates from the turnout base rail, thereby realizing the switch of the turnout position, that is, realizing the switch from the fixed position to the reverse position, or from the reverse position to the fixed position. In other words, the switch machine is an important signal infrastructure equipment that changes the position of the turnout, changes the direction of the turnout opening, locks the turnout point rail, and reflects the position and status of the turnout.

[0103] It should be noted that the main shaft assembly is the core component of the ZD6 electric switch machine transmission mechanism, which contains tight bearings. The disassembly quality of the main shaft assembly is directly related to the service life of the ZD6 electric switch machine.

[0104] In order to more clearly understand the technical solution of the present invention, the working mode of the present invention is described below.

[0105] The present invention provides a disassembly device for a switch machine main shaft assembly, which includes the following working modes:

[0106] See also Figure 8 As shown, first, the fixed part of the device of the present invention is fixed to the top of a side panel of the lower housing 10 with an open top of the electric switch machine 12 (for example, the ZD6-D type DC electric switch machine) through the hook 5; the side panel is provided with a circular main shaft docking hole 1201;

[0107] The main shaft docking hole 1201 is arranged correspondingly to the main shaft 9 in the electric switch machine 12, so as to expose the main shaft 9; the main shaft 9 has a main shaft internal threaded hole 9001 at one end facing the main shaft docking hole 1201;

[0108] It should be noted that the lower housing 10 of the existing model of the electric switch machine has an (original) main shaft docking hole 1201; the end of the main shaft 9 facing the main shaft docking hole 1201 has an (original) main shaft internal threaded hole 9001.

[0109] Then, the screw rod 1 of the screw rod part of the device of the present invention is horizontally passed through the open through slot 3001 on the connecting plate 3 in the fixed part;

[0110] Then, a tool (such as a cylindrical metal rod or a screwdriver) is used to pass through the first through hole 1003 on the screw rod 1, and the second external thread 1002 on the screw rod head 102 of the screw rod 1 is screwed into the spindle internal thread hole 9001 of the spindle 9 of the electric switch machine, so that the screw rod head 102 of the screw rod 1 is fixedly connected to the spindle 9 of the electric switch machine;

[0111] Then, the screw rod 1 is kept fixed in position, and the outer hexagonal portion 2001 of the screw nut 2 is rotated clockwise using a tool (such as an adjustable wrench) to rotate the screw nut 2 relative to the screw rod 1. When the annular protrusion 2003 of the screw nut 2 contacts the open through groove 3001 of the connecting plate 3, the main shaft 9 of the electric switch machine 12 begins to be subjected to outward force (specifically, a pulling force in the direction of the screw head 102 of the screw rod 1);

[0112] Next, the screw nut 2 is rotated clockwise. Since the screw head 102 of the screw 1 is fixedly connected with the main shaft 9, the screw 1, together with the main shaft 9, the main shaft sleeve 9002 and the needle bearing 9003, begin to be separated from the installation position in the electric switch machine 12.

[0113] As mentioned above, it should be noted that the spindle assembly includes the spindle 9 and parts such as the spindle sleeve 9002 and the needle bearing 9003 fixedly mounted on the spindle 9.

[0114] See also Figure 8 The main shaft sleeve 9002 and the needle bearing 9003 are fixedly installed on the outer circumferential sides of both ends of the main shaft 9, wherein the main shaft sleeve 9002 arranged on the outer circumferential sides of the main shaft 9 and the main shaft docking hole 1201 are interference fit, and the needle bearing 9003 arranged on the outer circumferential sides of the main shaft 9 and the bearing mounting hole 1001 arranged on the bottom shell 10 are interference fit, and the main shaft 9 is connected to the bottom shell 10 of the electric switch machine 12 through the main shaft sleeve 9002 and the needle bearing 9003, and the main shaft 9 is connected to the reducer box in the electric switch machine 12 through the start plate, wherein the main shaft 9 and the start plate are clearance fit, and during the working process of the electric switch machine 12, the reducer drives the main shaft 9 to rotate and run through the start plate. These are the main shaft installation structure designs already available on the existing electric switch machine, and will not be repeated here.

[0115] It should be noted that, when an external pulling force is applied, the main shaft sleeve 9002 fixedly installed on the main shaft 9 is separated from the main shaft docking hole 1201, and the needle bearing 9003 fixedly installed on the main shaft 9 is separated from the bearing mounting hole 1001 of the bottom shell 10, so that the main shaft 9 together with the main shaft sleeve 9002 and the needle bearing 9003 are separated from the electric switch machine 12.

[0116] Then, continue to rotate the screw nut 2 clockwise until the main shaft 9 together with the main shaft sleeve 9002 and the needle bearing 9003 are completely separated from the electric switch machine 12, and the disassembly operation of the main shaft 9 (i.e., the main shaft assembly) is completed.

[0117] 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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A disassembly device for a switch machine main shaft assembly, characterized in that: include: Screw part and fixed part; The screw rod part includes a screw rod (1) and a screw rod nut (2); The screw rod (1) comprises: a screw rod column (101), a screw rod head (102), a screw rod tail end driving part (103) and a transition rod (104); The right end of the laterally distributed screw rod column (101) is connected to the left end of the transition rod (104); The right end of the transition rod (104) is connected to the left end of the screw rod head (102); The left end of the screw rod column (101) is provided with a screw rod tail end driving part (103); The screw nut (2) comprises an outer hexagonal portion (2001) and an annular raised portion (2003); The right side of the outer hexagonal portion (2001) is fixedly connected to the left side of the annular raised portion (2003); A first internal thread through hole (2002) is transversely provided on the outer hexagonal portion (2001) and the annular raised portion (2003); The screw rod column (101) on the screw rod (1) has a first external thread (1001) which is threadedly connected to a first internal thread through hole (2002) on the screw rod nut (2); The fixed part includes: a connecting plate (3), a supporting plate (4), a hook (5) and a bottom bracket (6); A long open through slot (3001) is provided at the middle section of the vertically distributed connecting plate (3); An open through slot (3001) for transversely passing the screw rod (1); The upper right end of the connecting plate (3) is fixedly connected to the supporting plate (4); The right lower end of the connecting plate (3) is fixedly connected to the bottom bracket (6); The front and rear ends of the top of the support plate (4) are connected to a hook (5); A hook (5) for hanging on an external electric switch machine (12); The right side of the bottom bracket (6) is used to tighten the external electric switch machine (12).

2. The disassembly device of the switch machine main shaft assembly according to claim 1, characterized in that: A hook (5) is used to hang on the top of a side panel of a lower housing (10) with an open top of an external electric switch machine (12); a circular main shaft docking hole (1201) is opened on the side panel; The main shaft docking hole (1201) is arranged correspondingly to the main shaft (9) in the electric switch machine (12) to expose the main shaft (9); One end of the main shaft (9) facing the main shaft docking hole (1201) has a main shaft internal threaded hole (9001); The screw rod head (102) is used for being threadedly fixedly connected with the spindle internal thread hole (9001) on the spindle (9).

3. The disassembly device of the switch machine main shaft assembly according to claim 2, characterized in that: The outer hexagonal portion (2001) of the screw rod is used to, when the screw rod head (102) of the screw rod (1) is threadedly fixedly connected with the spindle internal threaded hole (9001) on the spindle (9) and the position remains unchanged, cause the screw nut (2) to rotate relative to the screw rod (1) under the rotational drive of an external force, contact and squeeze the left side wall of the connecting plate (3), and apply a pulling force in the direction of the screw rod head (102) of the screw rod (1) to the spindle (9) and the spindle sleeve (9002) and the needle bearing (9003) fixedly installed on the circumferential outer side of the spindle (9).

4. The disassembly device of the switch machine main shaft assembly according to claim 2, characterized in that: On the right side of the base (6), a side panel having a main shaft docking hole (1201) is provided for tightening the lower housing (10) of the electric switch machine (12); The front and rear ends of the support plate (4) protrude from the front and rear sides of the connecting plate (3) respectively; The outer diameter of the annular raised portion (200) is greater than the longitudinal width of the open through groove (3001).

5. The disassembly device of the switch machine main shaft assembly according to claim 1, characterized in that: A circular first through hole (1003) is provided on the driving part (103) at the tail end of the screw rod; A first through hole (1003) for inserting an external tool, wherein the external tool is used to rotate the screw rod (1); and / or, The circumferential outer wall of the screw rod column (101) is provided with a first external thread (1001); The circumferential outer wall of the screw rod head (102) is provided with a second outer thread (1002); The second external thread (1002) on the screw rod head (102) is threadedly fixedly connected to the main shaft internal thread hole (9001) on the main shaft (9).

6. The disassembly device of the switch machine main shaft assembly according to claim 1, characterized in that: The upper right end of the connecting plate (3) is fixedly connected to the supporting plate (4) via two second bolts (8); Two second through holes (3002) are respectively provided at the upper and lower ends of the connecting plate (3); Two second internally threaded through holes (4001) are respectively vertically arranged at the front and rear ends of the support plate (4); Two third internally threaded through holes (4002) are arranged transversely through the middle of the support plate (4); Two third internally threaded through holes (4002) are arranged correspondingly to the two second through holes (3002) at the upper end of the connecting plate (3); After the second bolt (8) passes through the second through hole (3002) at the upper end of the connecting plate (3) transversely, it is threadedly fixedly connected with the third internal thread through hole (4002) at the middle part of the supporting plate (4) at the corresponding position.

7. The disassembly device of the switch machine main shaft assembly according to any one of claims 1 to 6, characterized in that: The front and rear ends of the top of the support plate (4) are connected to a hook (5) via two first bolts (7) respectively; Each hook (5) comprises a vertical plate (5001) and a horizontal plate (5003); The upper end of the vertical plate (5001) is vertically connected to the right end of the horizontal plate (5003); The horizontal plate (5003) is provided with two third circular through holes (5002) which penetrate vertically; The two third through holes (5002) respectively provided on the two hooks (5) are arranged correspondingly to the two second internally threaded through holes (4001) respectively provided at the front and rear ends of the support plate (4); After the first bolt (7) vertically passes through the third through hole (5002), it is threadedly fixedly connected to the two second internal threaded through holes (4001) on the support plate (4) at the corresponding position.

8. The disassembly device of the switch machine main shaft assembly according to claim 1, characterized in that: The right lower end of the connecting plate (3) is fixedly connected to the bottom bracket (6) via two third bolts (11); Two fourth internal threaded through holes (6001) are arranged on the bottom bracket (6) in a transverse direction; Two fourth internally threaded through holes (6001) are arranged correspondingly to the two second through holes (3002) at the lower end of the connecting plate (3); After the third bolt (11) is passed transversely through the second through hole (3002) at the lower end of the connecting plate (3), it is threadedly fixedly connected with the fourth internal thread through hole (6001) on the base bracket (6) at the corresponding position.

9. The disassembly device of the switch machine main shaft assembly according to claim 1, characterized in that: The screw rod column (101), the screw rod head (102), the screw rod tail end driving part (103) and the transition rod (104) are integrally formed; The overall shape of the transition rod (104) is a truncated cone shape; The transverse central axes of the screw rod column (101), the screw rod head (102), the screw rod tail end driving part (103) and the transition rod (104) are located on the same straight line; The central axis of the first through hole (1003) is perpendicular to the transverse central axis of the screw rod column (101); The outer hexagonal portion (2001) and the annular raised portion (2003) are integrally formed; The central axis of the first internal threaded hole (2002) and the central axis of the screw nut (2) are in the same straight line.

10. The disassembly device of the switch machine main shaft assembly according to any one of claims 1 to 9, characterized in that: The following working modes are included: First, the fixed part is fixed to the top of a side panel of a lower housing (10) of the electric switch machine (12) with an open top by means of a hook (5); a circular main shaft docking hole (1201) is opened on the side panel; The main shaft docking hole (1201) is arranged correspondingly to the main shaft (9) in the electric switch machine (12) for exposing the main shaft (9); one end of the main shaft (9) facing the main shaft docking hole (1201) has a main shaft internal threaded hole (9001); A main shaft sleeve (9002) and a needle roller bearing (9003) are fixedly mounted on the main shaft (9); the main shaft assembly comprises the main shaft (9) and the main shaft sleeve (9002) and the needle roller bearing (9003) fixedly mounted on the main shaft (9); Then, the screw rod (1) of the screw rod part is passed transversely through the open slot (3001) on the connecting plate (3) in the fixed part; Then, a tool is used to pass through the first through hole (1003) on the screw rod (1), and the second external thread (1002) on the screw rod head (102) of the screw rod (1) is screwed into the main shaft internal thread hole (9001) of the main shaft (9) of the electric switch machine, thereby fixing the screw rod head (102) of the screw rod (1) and the main shaft (9) of the electric switch machine. Then, the screw rod (1) is kept fixed in position, and the outer hexagonal portion (2001) of the screw rod nut (2) is rotated clockwise using a tool, so that the screw rod nut (2) rotates relative to the screw rod (1). When the annular protrusion (2003) of the screw rod nut (2) contacts the open through groove (3001) of the connecting plate (3), the main shaft (9) of the electric switch machine (12) begins to be subjected to a pulling force in the direction of the screw rod head (102) of the screw rod (1); Then, the screw nut (2) is rotated clockwise. Since the screw head (102) of the screw (1) is fixedly connected to the main shaft (9), the screw (1) together with the main shaft (9) and the main shaft sleeve (9002) and the needle bearing (9003) begin to be separated from the installation position in the electric switch machine (12). Then, the screw nut (2) is rotated clockwise until the main shaft (9) together with the main shaft sleeve (9002) and the needle bearing (9003) are completely separated from the electric switch machine (12), and the disassembly operation of the main shaft (9) is completed.

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