Auxiliary checking device for gap of switch machine and switch machine

Abstract

The utility model discloses an auxiliary checking device for a gap of a switch machine and the switch machine. The auxiliary checking device comprises a shifting mark window, a first vernier, a second vernier and a square head screw, a horizontally-distributed installation support is arranged in the middle of the bottom face of the shifting mark window in a forward protruding mode. The left end and the right end of the top of the installation support are fixedly connected with one end of a first vernier and one end of a second vernier through square head screws respectively. First bolt mounting through holes are respectively formed in the left end and the right end of the shifting mark window; the first vernier and the second vernier are symmetrically arranged left and right; the opposite ends of the first vernier and the second vernier are respectively provided with a horizontally distributed pointer; and the two pointers are positioned above the rod piece at the extending end of the locking rod of the switch machine. On the premise that a switch machine cover is not opened, an electric service worker can reflect the actual state of the notch by checking the relative position of the pointer of the displacement mark (namely the vernier) and the scribed line (namely the identification line) on the locking rod, and the labor efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway turnout conversion equipment technical field, especially, a kind of switch machine gap auxiliary viewing device and switch machine. BACKGROUND

[0002] Switch machine is the important signal basic equipment for reliably converting turnout position, changing turnout opening direction, locking turnout point rail and reflecting turnout position.

[0003] The function of switch machine is to convert and lock point rail (center rail), change the opening direction of turnout and reflect the position state of point rail (center rail) through contact point, and switch machine is one of the important equipment to ensure the safety of railway transportation. If switch machine does not convert turnout to the right position, it will affect the normal train operation order, and in serious cases, it may cause train collision or derailment. Therefore, switch machine is the electric traction equipment of railway turnout, and its reliability is related to the safety of railway transportation.

[0004] For switch machine, switch machine gap (i.e. switch machine indicating gap) is used to reflect the close state and position of point rail (center rail) and basic rail (wing rail) of turnout. If point rail and basic rail are not close to the right position, it may cause serious consequences such as train derailment. Therefore, regular checking of switch machine gap is of great significance and has always been an important part of maintenance by electric service personnel. Therefore, it is necessary to regularly check the switch machine gap.

[0005] It should be noted that switch machine gap refers to the groove on the locking lever of switch machine for falling into the inspection column.

[0006] For switch machine, it includes two locking levers arranged side by side, one of which has a gap (i.e. groove) at the top right end, and the other has a gap at the top left end, and above the two gaps there are an inspection column respectively. When the turnout is converted to the right position, one of the inspection columns in the switch machine will fall into the gap of the locking lever below it, and the task of gap checking is to check the distance between the side edge of the gap on the locking lever and the edge of the inspection column that has fallen into it (i.e. gap clearance width, also known as gap width, gap clearance is the gap between the edge of the gap in the locking lever and the edge of the inspection column).

[0007] However, since the switch machine gap on the locking lever is located inside the device housing of switch machine (the device housing includes lower housing and machine cover arranged at the top of lower housing), in order to check the switch machine gap (i.e. switch machine indicating gap), electric service personnel need to open the machine cover of switch machine to check. Therefore, not only the work efficiency is low, but also the labor cost is increased, and the labor intensity of electric service personnel is large.

[0008] Therefore, it is urgent to develop a technology which can solve the above technical problems. Utility model content

[0009] The utility model discloses to the technical defects of prior art, provide a switch machine gap auxiliary viewing device and switch machine.

[0010] Therefore, the utility model provides a switch machine gap auxiliary viewing device, it includes displacement mark window, first vernier, second vernier and square head screw,

[0011] The bottom surface middle position of the transverse distribution displacement mark window is provided with the horizontally distributed mounting bracket that protrudes forward;

[0012] The left and right ends of the mounting bracket are fixedly connected with one end of the first vernier and one end of the second vernier through a square head screw respectively;

[0013] The left and right ends of the displacement mark window are provided with first bolt mounting through holes respectively;

[0014] The first vernier and the second vernier are symmetrically arranged;

[0015] The end of the first vernier and the second vernier away from each other is provided with a horizontally distributed pointer respectively;

[0016] The two pointers are located above the protruding end rod piece of the locking rod of the switch machine.

[0017] In addition, the utility model also provides a switch machine, it includes the switch machine gap auxiliary viewing device as described above, and the device shell of switch machine;

[0018] The device shell of switch machine is provided with the transverse distribution locking rod;

[0019] The displacement mark window is located above the protruding end rod piece of the locking rod.

[0020] From the technical scheme provided by the utility model above, compared with the prior art, the utility model provides a switch machine gap auxiliary viewing device and switch machine, and the structure design is scientific, can let electric power workers reflect the actual state of gap by checking the relative position of displacement mark (vernier) pointer and rod piece marking line (marking line) on the locking rod without opening the switch machine cover, can solve the problem that gap is not easy to check to a great extent, reduce the labor intensity of on-site electric power workers, improve labor efficiency.

[0021] The switch machine gap auxiliary viewing device provided by the utility model is a displacement mark group for switch machine, which is used for checking and calibrating switch machine gap. DRAWINGS

[0022] Figure 1 The utility model provides a kind of stereoscopic structure schematic view of the gap auxiliary viewing device of switch machine provided by the utility model;

[0023] Figure 2 The front view of the gap auxiliary viewing device of switch machine provided by the utility model;

[0024] Figure 3 The plan view of the gap auxiliary viewing device of switch machine provided by the utility model;

[0025] Figure 4 The structure schematic view of the gap auxiliary viewing device of switch machine provided by the utility model, a switch machine matched with has the structure schematic view of locking rod left end partial area;

[0026] Figure 5 The utility model provides a kind of Figure 4 The local enlarged schematic view of the locking rod left end partial area;

[0027] Figure 6 The utility model provides a kind Figure 4 The local enlarged schematic view of the locking rod right end partial area;

[0028] Figure 7 The utility model provides a kind of stereoscopic structure schematic view of the switch machine, it is also the state schematic view of the gap auxiliary viewing device of switch machine provided by the utility model application on switch machine;

[0029] Figure 8 The utility model provides a kind Figure 8 The local enlarged schematic view;

[0030] Figure 9 The utility model provides a kind of gap auxiliary viewing device of switch machine provided by the utility model, the plan view of the switch machine applied when opening machine cover;

[0031] Figure 10 The utility model provides a kind of gap auxiliary viewing device of switch machine provided by the utility model, the local position relation schematic view of locking rod in the switch machine applied in locking column. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 a limitation on the utility model.

[0034] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 a limitation on the utility model.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly limited.

[0036] Referring to Figures 1 to 10 The utility model provides a kind of switching machine gap auxiliary viewing device, it is a displacement mark group for switching machine, for checking, calibration switching machine gap, the device includes: displacement mark window 1, first cursor 2, second cursor 3 and square head screw 8;

[0037] The bottom surface middle position of the transversely distributed displacement mark window 1 is provided with horizontally distributed mounting bracket 101 forwardly and protrudingly;

[0038] The left and right ends of mounting bracket 101 are fixedly connected with one end of first cursor 2 and one end of second cursor 3 respectively by one square head screw 8;

[0039] The left and right ends of displacement mark window 1 are respectively provided with first bolt mounting through hole 103;

[0040] First cursor 2 and second cursor 3 are symmetrically arranged left and right;

[0041] The end opposite to first cursor 2 and second cursor 3 is respectively provided with one horizontally distributed pointer 10;

[0042] Two pointers 10 are located above (directly above) the extended end of the locking lever 93 of the switch machine 9.

[0043] It should be noted that the displacement mark window 1 is also located above the extended end of the locking lever 93 of the switch machine 9.

[0044] In the utility model, the displacement mark window 1 is vertically arranged with the horizontal plane.

[0045] In the utility model, the overall shape of the first cursor 2 and the second cursor 3 is L-shaped.

[0046] In the utility model, the top surface height of the pointer 10 is lower than the bottom surface height of the mounting bracket 101.

[0047] In the utility model, the first cursor 2 and the second cursor 3 each include a vertical section 201 and a horizontal end 202.

[0048] The top of each vertical section 201 is oppositely provided with a horizontal section 202.

[0049] The bottom of each vertical section 201 is oppositely provided with a pointer 10.

[0050] In particular, the vertical section 201, the horizontal end 202 and the pointer 10 are integrally formed.

[0051] In the utility model, the left and right ends of the mounting bracket 101 are vertically and respectively provided with a long circular groove 102.

[0052] The first cursor 2 and the second cursor 3 are vertically and respectively provided with a cursor through hole corresponding to the long circular groove 102.

[0053] The square head screw 8 is threadedly and fixedly connected with at least one fastening nut after passing through the corresponding long circular groove 102 and cursor through hole from bottom to top.

[0054] In particular, the two long circular grooves 102 are symmetrically distributed.

[0055] In particular, the shape of the mounting bracket 101 is an inverted "N" shape.

[0056] In particular, the square head screw 8 is threadedly and fixedly connected with the third nut 7 and the second nut 6 in sequence after passing through the corresponding long circular groove 102 and cursor through hole from bottom to top.

[0057] Further, the screw rod of the square head screw 8 is sleeved with the spring washer 4 on the circumferential outer side of the part between the bottom surface of the third nut 7 and the top surface of the mounting bracket 101.

[0058] It should be noted that, in the utility model, the square head screw 8 is a small square head screw M4X16, the spring washer 4 is a standard spring washer, and the second nut 6 is a non-metal insert hexagonal locking nut M4, and the third nut 7 is a type 1 hexagonal nut M4.

[0059] That is to say, the upper part of the square head screw 8 is provided with two nuts (the second nut 6 and the third nut 7), wherein the nut close to the spring washer 4 is a common type 1 hexagonal nut (namely the third nut 7) and plays a fastening role, and the other nut is a non-metal insert hexagonal locking nut (namely the second nut 6) and plays a fastening anti-loosening role.

[0060] In the utility model, the left and right ends of the mounting bracket 101 are respectively provided with one downwardly bent limiting folded iron 104;

[0061] The two square head screws 8 are located between the two limiting folded irons 104;

[0062] The opposite sides of the two limiting folded irons 104 are respectively in abutment (namely in abutting contact) with the nuts at the bottoms of the two square head screws 8.

[0063] It should be noted that, for the utility model, when the device (namely the displacement marker group) is installed on the switch machine, the space below the square head screw 8 is small when the pointer 10 of the displacement marker needs to be adjusted, and the square head screw 8 below is not easy to use a fastening tool when the nuts (the third nut 7 and the second nut 6) above are fastened, so the utility model designs the downwardly bent limiting folded irons 104 at the two ends of the mounting bracket 101, which play the role of limiting the rotation of the square head screw 8 below by abutting (namely in abutting contact) the nuts at the bottoms of the two square head screws 8 through the cooperation of the two limiting folded irons 104.

[0064] In the utility model, the whole of the switch machine gap auxiliary viewing device (namely the displacement marker group) is installed above the extended end rod of the locking rod 93 of the switch machine 9.

[0065] Specifically, the device housing of the switch machine 9 comprises a lower housing 91 and a cover 92 arranged at the top of the lower housing;

[0066] One side outer wall of the lower housing 91 is provided with a double-hole cover plate 94;

[0067] The displacement marker window 1 in the switch machine gap auxiliary viewing device (namely the displacement marker group) is fixed to the outer side of the double-hole cover plate 94 of the switch machine 9 through two first mounting bolts 95 (specifically mounting bolts with sealing rings);

[0068] Specifically, the displacement mark window 1 is located above the extending end of the locking rod 93.

[0069] The two pointers 10 on the first cursor 2 and the second cursor 3 are located above the extending end of the locking rod 93.

[0070] Further, two first threaded holes are arranged on the double-hole cover plate 94 of the switch machine 9.

[0071] The two first threaded holes on the double-hole cover plate 94 are arranged in positive correspondence with the two first bolt mounting through holes 103 on the displacement mark window 1.

[0072] The first mounting bolt 95 is threadedly fixedly connected to the first threaded hole on the double-hole cover plate 94 in position after passing through the first bolt mounting through hole 103.

[0073] Specifically, the locking rod 93 (i.e., the locking rod) of the switch machine 9 includes the first locking rod member 931 and the second locking rod member 932 arranged side by side.

[0074] The first locking rod member 931 and the second locking rod member 932 transversely pass through the double-hole cover plate 94 on the lower shell 91 of the switch machine 9.

[0075] The extending end of the first locking rod member 931 and the second locking rod member 932 (i.e., the extending end of the locking rod 93) is the end close to the double-hole cover plate 94 of the switch machine 9.

[0076] The top non-extending end side of the first locking rod member 931 (i.e., the end away from the double-hole cover plate 9) is provided with a first notch 9310 (i.e., a groove).

[0077] The top extending end side of the second locking rod member 932 (i.e., the end close to the double-hole cover plate 9) is provided with a second notch 9210 (i.e., a groove).

[0078] It should be noted that the two notches of the first notch 9310 and the second notch 9210 are respectively provided with an original inspection column of the switch machine. When the turnout is converted to position, an inspection column in the switch machine falls into the notch of the locking rod below.

[0079] Further, two marking lines 930 (i.e., marking lines) are respectively arranged on the first locking rod member 931 and the second locking rod member 932.

[0080] Further, the two pointers 10 on the first cursor 2 and the second cursor 3 are located above the extending end of the locking rod 93 (i.e., the rod member close to the double-hole cover plate 94), specifically above the first locking rod member 931 and the second locking rod member 932.

[0081] Specifically, the pointers of the first cursor 2 and the second cursor 3 are respectively aligned with the two mark lines 930 (i.e. the tick lines) on the first locking rod piece 931 and the second locking rod piece 932 of the locking rod 93, which are close to one side of the double-hole cover plate 94 of the switch machine 9.

[0082] In the utility model, specifically, the switch machine gap auxiliary viewing device provided by the utility model can be specifically applied to the ZDJ9 type dustproof sealed switch machine produced by Tianjin Railway Signal Co., Ltd.

[0083] In order to more clearly understand the technical scheme of the utility model, the working principle of the utility model is described below.

[0084] For the utility model, as shown in Figures 4 to 6 , the first locking rod piece 931 and the second locking rod piece 932 of the locking rod 90 are respectively provided with mark lines 930 (i.e. the tick lines);

[0085] As shown in Figures 7 to 10 , for a switch machine, after the fixed reverse position gap of the switch machine is adjusted, that is, when the switch machine is in the pulled-in locking position or the stretched-out locking position, the locking column (i.e. the inspection column) on the original automatic on-off device of the switch machine falls into the straight mouth of the detection rod (i.e. the locking rod 90), at this time, the pointers of the first cursor 2 and the second cursor 3 are adjusted, and the pointers of the first cursor 2 and the second cursor 3 are respectively aligned with the two mark lines 930 (i.e. the tick lines) on the first locking rod piece 931 and the second locking rod piece 932 of the locking rod 93, which are close to one side of the double-hole cover plate 94 of the switch machine 9, for subsequent gap auxiliary viewing and gap correction work.

[0086] It should be noted that, in order to adapt to the field installation, the switch machine is divided into left installation and right installation, Figure 7 , Figure 8 , Figure 9 The rod piece (i.e. the stretched-out end rod piece) of the locking rod 93 is stretched out from the right side for the left installation, and the rod piece of the locking rod 93 is stretched out from the left side for the right installation. The working principle of the switch machine is as follows: the motor output torque in the switch machine is transmitted through the gear and screw rod in the switch machine, the push plate sleeve in the switch machine drives the action rod on the switch machine to move, the action rod and the locking rod are connected through the linkage device and the point rail, the point rail drives the locking rod to move, and when the locking rod moves to the terminal position, the switch machine is locked and an indication is given. In summary, the working positions of the switch machine include the pulled-in locking position and the stretched-out locking position. When the switch machine is in the locking position, the mark line 930 (i.e. the tick line) is aligned with a displacement mark pointer.

[0087] In order to adapt to the switch machine with different installation directions, four mark lines 930 (i.e. the tick lines) are arranged on the locking rod.

[0088] Figure 5The two mark lines 930 (i.e. the mark lines) on the left end of the first locking lever 931 and the second locking lever 932 shown in the figure are Figure 7 , Figure 8 , Figure 9 The two mark lines 930 (i.e. the mark lines) on the left side of the switch machine shown in the figure (i.e. the locking lever extends from the right side of the lower shell 91 of the switch machine) are

[0089] Referring to Figure 10 When the switch machine is operated to the end of the locking position, the locking column 96 on the contact seat in the switch machine falls into the straight mouth 97 (i.e. the concave gap) of the locking lever 93, at this time, the gap between the edge of the straight mouth 97 of the locking lever 93 and the edge of the adjacent locking column 96 is the gap gap, which requires 2±0.5mm. Since the locking lever 93 has a lever part with a straight mouth 97 (i.e. a concave gap) and the locking column 96 is located below the contact seat and inside the switch machine 9, when viewing the gap, the cover needs to be opened to view from the gap, which is not convenient for checking the gap. After the gap in the switch machine is adjusted, the displacement mark pointer is aligned with the mark line (i.e. the mark line), then the pointer of each cursor will be aligned with one of the mark lines (i.e. the mark line) when the switch machine is converted to the position each time, when the work site needs to check the gap, only need to check from the outside whether the displacement mark pointer is aligned with the mark line, that is, whether the switch machine is converted to the position, that is, whether the locking column 96 can reliably fall into the straight mouth 97 (i.e. the concave gap) of the locking lever 93.

[0090] When the pointers of the first cursor 2 and the second cursor 3 are aligned with the two mark lines 930 on the side of the double-hole cover plate 94 of the first locking lever 931 and the second locking lever 932 near the switch machine 9, it indicates that the switch machine has been converted to the position, that is, the locking column 96 has reliably fallen into the straight mouth 97 (i.e. the concave gap) of the locking lever 93.

[0091] If the pointers of the first cursor 2 and the second cursor 3 are not aligned with the two mark lines 930 on the side of the double-hole cover plate 94 of the first locking lever 931 and the second locking lever 932 near the switch machine 9, and the distance between the pointer and the corresponding mark line 930 is too large (for example, in the axial direction of the locking lever, the projection of the pointer on the locking lever exceeds the pre-required distance from the corresponding mark line 930, for example, 2mm), it indicates that the switch machine has not been converted to the position, that is, the locking column 96 has not reliably fallen into the straight mouth 97 (i.e. the concave gap) of the locking lever 93.

[0092] Need to explain, for a switch machine, the locking column in the switch machine contact seat is connected with the spline crank, the movable contact group is connected with the support, the spline crank and the support are connected through the spline shaft, when the locking column falls into the straight mouth of the locking rod, the movable contact group can be punched into the static contact group, and the indicating circuit is turned on.

[0093] Need to explain, the internal structure of the switch machine and the structure design and working principle of the locking rod and the locking column are the original design of the existing switch machine, which is a mature and popular technology, and will not be repeated here. For example, it can be the original locking rod related structure design of the ZDJ9 type dustproof sealed switch machine produced by Tianjin Railway Signal Co., Ltd.

[0094] Need to explain, for the utility model, the gap auxiliary viewing device provided by the utility model is only installed at the double-hole cover plate 94 of the extension end of the locking rod of the switch machine.

[0095] Based on the gap auxiliary viewing device of the switch machine provided in the utility model, the utility model further provides a switch machine, which comprises the gap auxiliary viewing device of the switch machine described above and a device housing of the switch machine 9.

[0096] The device housing (specifically, the lower housing 91) of the switch machine 9 is provided with a locking rod 93 distributed transversely.

[0097] The shift mark window 1 is located above the extension end rod of the locking rod 93.

[0098] In the utility model, the device housing of the switch machine 9 comprises a lower housing 91 and a cover 92 arranged at the top of the lower housing, which is specifically implemented.

[0099] The lower housing 91 is provided with the locking rod 93.

[0100] One side of the lower housing 91 is provided with a double-hole cover plate 94.

[0101] The shift mark window 1 is fixed to the outer side of the double-hole cover plate 94 of the switch machine 9 through two first mounting bolts 95 (specifically, mounting bolts with sealing rings).

[0102] The extension end rod of the locking rod 93 is close to one side of the double-hole cover plate 94 of the switch machine 9.

[0103] Need to explain, the double-hole cover plate 94 is only arranged on one side of the lower housing 91 of the switch machine 9 with the extension end of the switch machine locking rod.

[0104] To be specific, the switch machine of the utility model can be basically the same as the ZDJ9 type switch machine produced by Tianjin Railway Signal Co., Ltd., with the difference that the switch machine gap auxiliary viewing device is additionally arranged, and the corresponding mark line is arranged on the locking rod.

[0105] As can be seen from the technical scheme of the utility model provided above, compared with the prior art, the utility model provides a switch machine gap auxiliary viewing device and a switch machine, the structure design of which is scientific, and the actual state of the gap can be reflected by letting the electric power workers check the relative position of the displacement mark (i.e. the vernier) pointer and the rod member mark line (i.e. the mark line) on the locking rod without opening the switch machine cover, thereby reducing the labor intensity of the electric power workers on site and improving the labor efficiency.

[0106] It should be noted that for a switch machine, after the gap in the machine is adjusted to be within the range of 2±0.5 mm of the standard, the displacement mark pointer (i.e. the pointer of the first vernier 2 and the second vernier 3) outside the machine is adjusted to be aligned with the rod member mark line (i.e. the mark line) of the locking rod, and when the gap in the machine becomes larger or smaller, the mark line outside the machine cannot be aligned with the displacement mark pointer, so it can be inferred that the gap has changed.

[0107] Therefore, the technical scheme of the utility model is an auxiliary viewing tool for correcting the gap.

[0108] The above description is only the preferred embodiments of the utility model, and it should be noted that for ordinary technical personnel in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A switch machine gap assist viewing device, characterized by, The displacement mark window (1), the first cursor (2), the second cursor (3) and the square head screw (8) are included. The bottom surface of the transversely distributed displacement mark window (1) is provided with a horizontally distributed mounting bracket (101) in the middle position. The left and right ends of the mounting bracket (101) are respectively fixedly connected with one end of the first cursor (2) and one end of the second cursor (3) through a square head screw (8). The left and right ends of the displacement mark window (1) are respectively provided with a first bolt mounting through hole (103). The first cursor (2) and the second cursor (3) are symmetrically arranged. The end of the first cursor (2) and the second cursor (3) away from each other is respectively provided with a horizontally distributed pointer (10). The two pointers (10) are located above the extending end of the locking rod (93) of the switch machine (9).

2. The switch machine gap assist viewing device of claim 1, wherein, The first cursor (2) and the second cursor (3) each include a vertical section (201) and a horizontal end (202). The top of the two vertical sections (201) is respectively provided with a horizontal section (202) opposite to each other. The bottom of the two vertical sections (201) is respectively provided with a pointer (10) away from each other.

3. The switch machine gap assist viewing device of claim 2, wherein, The vertical section (201), the horizontal end (202) and the pointer (10) are integrally formed. The displacement mark window (1) is arranged perpendicular to the horizontal plane. The overall shape of the first cursor (2) and the second cursor (3) is L-shaped. The height of the top surface of the pointer (10) is lower than the height of the bottom surface of the mounting bracket (101).

4. The switch machine gap assist viewing device of any one of claims 1-3, wherein, The left and right ends of the mounting bracket (101) are respectively vertically provided with a longitudinally distributed long circular groove (102). The first cursor (2) and the second cursor (3) are respectively vertically provided with a cursor through hole corresponding to the long circular groove (102). The square head screw (8) is threadedly fixedly connected with at least one fastening nut after passing through the position corresponding long circular groove (102) and cursor through hole from bottom to top. And / or, The left and right ends of the mounting bracket (101) are respectively provided with a downwardly bent limiting bent iron (104). The two square head screws (8) are located between the two limiting bent irons (104). The side opposite to the two limiting bent irons (104) is respectively abutted with the nut at the bottom of each square head screw (8).

5. The switch machine gap assist viewing device of claim 4, wherein, The two long circular grooves (102) are symmetrically distributed. The shape of the mounting bracket (101) is an inverted "n" shape.

6. The switch machine gap assist viewing device of claim 4, wherein, The square head screw (8) is threadedly fixedly connected with the third nut (7) and the second nut (6) in sequence after passing through the position corresponding long circular groove (102) and cursor through hole from bottom to top. The spring washer (4) is sleeved on the circumferential outer side of the screw rod of the square head screw (8) between the bottom surface of the third nut (7) and the top surface of the mounting bracket (101).

7. The switch machine gap assist viewing device of any one of claims 1 to 6, wherein, The device housing of the switch machine (9) includes a lower housing (91) and a machine cover (92) arranged at the top of the lower housing. The side outer wall of the lower housing (91) is provided with a double-hole cover plate (94). The displacement mark window (1) is fixed outside the double-hole cover plate (94) of the switch machine (9) through two first mounting bolts (95). The locking rod (93) of the switch machine (9) comprises a first locking rod member (931) and a second locking rod member (932) arranged side by side; The first locking rod member (931) and the second locking rod member (932) transversely pass through the double-hole cover plate (94) on the lower shell (91) of the switch machine (9); The extended end of the first locking rod member (931) and the second locking rod member (932) is close to one end of the double-hole cover plate (9) of the switch machine (9); The top non-extended end side of the first locking rod member (931) is provided with a first notch (9310); The top extended end side of the second locking rod member (932) is provided with a second notch (9210); The first locking rod member (931) and the second locking rod member (932) are respectively provided with identification lines (930).

8. The switch machine gap assist viewing device of claim 7, wherein, The double-hole cover plate (94) of the switch machine (9) is provided with two first threaded holes; The two first threaded holes on the double-hole cover plate (94) are arranged in positive correspondence with the two first bolt mounting through holes (103) on the displacement mark window (1); After the first mounting bolt (95) passes through the first bolt mounting through hole (1)(03), it is threadedly fixedly connected with the first threaded hole on the double-hole cover plate (94) corresponding in position; The two pointers (10) on the first cursor (2) and the second cursor (3) are located above the extended end rod member of the locking rod (93) close to the double-hole cover plate (9), specifically above the first locking rod member (931) and the second locking rod member (932) respectively; The pointers of the first cursor (2) and the second cursor (3) are respectively aligned with the two identification lines (930) on the first locking rod member (931) and the second locking rod member (932) of the locking rod (93) close to the double-hole cover plate (94) of the switch machine (9).

9. A switch machine characterized by, The device housing of the switch machine (9) comprises a lower shell (91) and a machine cover (92) arranged on the top of the lower shell; The device housing of the switch machine (9) is provided with a transversely distributed locking rod (93); The displacement mark window (1) is located above the extended end rod member of the locking rod (93).

10. The switch machine of claim 9, wherein, The device housing of the switch machine (9) comprises a lower shell (91) and a machine cover (92) arranged on the top of the lower shell; The lower shell (91) is provided with a locking rod (93); The outer wall of one side of the lower shell (91) is provided with a double-hole cover plate (94); The displacement mark window (1) is fixed to the outside of the double-hole cover plate (94) of the switch machine (9) by two first mounting bolts (95); The extended end rod member of the locking rod (93) is close to the double-hole cover plate (94) of the switch machine (9).

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