Digital display gap detection device of electric switch machine

Abstract

A digital display notch detection device of an electric switch machine comprises locking rod detection fixed gates, a digital display movable gate detection module and a special installation mechanism, the locking rod detection fixed gates are installed in grooves in the tops of a pull-in locking rod and a pull-out locking rod of the electric switch machine respectively, and the digital display movable gate detection module is installed on the locking rod detection fixed gates. The special mounting mechanism is mounted on the electric switch machine end cover by penetrating electric switch machine end cover fixing screws through the hollow round holes; the digital display moving gate detection module is mounted above the special mounting mechanism through a fixing screw rod, and two detection moving gates at the bottom are exposed out of a hollow detection window area of the special mounting mechanism and are respectively aligned with a pull-in locking rod detection fixed gate and a pull-out locking rod detection fixed gate; through a relative displacement measurement value between a detection fixed gate of the pull-in and stretch-out locking rod and a detection movable gate of a fixed digital display movable gate detection module along with the reciprocating motion of the pull-in and stretch-out locking rod, the offset condition and offset of the gap of the switch machine are monitored in real time, and the change condition of the gap is checked and processed in advance; according to the utility model, the fault that the switch machine indicates the change of the gap can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field especially relates to a digital display indicating gap detection device of electric switch machine. BACKGROUND

[0002] The indicating gap of electric switch machine is an important parameter in the daily maintenance of switch machine, which reflects the close state of switch point and basic rail, and plays a crucial role in the operation of switch. Too large or too small gap value of switch machine indicating rod will lead to the failure of switch machine locking, thereby affecting the normal operation of switch.

[0003] At present, the daily maintenance of electric switch machine indicating gap in rail transit relies mainly on artificial periodic or irregular inspection. Generally, the gap deviation of electric switch machine is checked by visual and feeler gauge detection methods through opening the cover of electric switch machine during the gap of train operation, applying for maintenance operation construction / skylight. This method has certain influence on rail transit operation, and the maintenance personnel has large workload, complicated process, long time, low efficiency, is easily affected by the site environment, and is prone to manual misjudgment. Remote gap monitoring can also be implemented by using pearl collision type, photoelectric type and video type gap detection sensors, but there are problems such as high equipment cost, great construction difficulty, increased maintenance workload, low detection precision, complex reference position adjustment, easy to be disturbed by electromagnetic environment, frequent false alarms and so on.

[0004] The patent application file with publication number CN220062801U discloses a switch machine gap detection device, which detects the width of switch machine gap by manually inserting different thickness measuring bodies into the gap. The device is essentially an improved version of the feeler gauge detection method described above, but due to the technical limitations of the feeler gauge detection method itself, it is necessary to open the cover of the switch machine for manual measurement, real-time measurement is not possible, and only qualitative measurement of the gap width can be performed, and the measurement cannot display accurate numerical values. SUMMARY

[0005] In order to overcome the above prior art, the utility model discloses a kind of digital display gap detection devices of electric switch machine, locking rod detection fixed grid is respectively installed in the top slot of electric switch machine pull-in, extend locking rod, special mounting mechanism is installed on the end cover of electric switch machine by the through hollow round hole of electric switch machine end cover fixing screw;Digital display movable grid detection module is installed above special mounting mechanism by fixed screw rod, the bottom two detection movable grids expose the hollow detection window area of special mounting mechanism, respectively align pull-in, extend locking rod detection fixed grid, by the relative displacement measurement value between pull-in, extend locking rod detection fixed grid and fixed digital display movable grid detection module detection movable grid of reciprocating motion of pull-in, extend locking rod, realize to switch machine gap deviation, deviation for real-time monitoring, check and handle in advance to gap variation, the utility model can effectively prevent the occurrence of switch machine display gap variation fault.

[0006] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0007] A kind of digital display gap detection devices of electric switch machine, including locking rod detection fixed grid A, digital display movable grid detection module B and special mounting mechanism C, the locking rod detection fixed grid A includes the pull-in locking rod detection fixed grid A-1 installed in the top of the pull-in locking rod 1 of electric switch machine and the extend locking rod detection fixed grid A-2 installed in the top of the extend locking rod 2 of electric switch machine;Digital display movable grid detection module B is fixed to the end cover 5 of electric switch machine by special mounting mechanism C;The bottom of digital display movable grid detection module B is provided with two rows of detection movable grids B-1, and the two rows of detection movable grids B-1 are respectively aligned with the pull-in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2.

[0008] The pull-in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2 are laid in parallel, and the two ends are aligned, and the transverse center lines of the pull-in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2 coincide with the transverse center lines of the pull-in locking rod detection mark line 3 and the extend locking rod detection mark line 4;The transverse distance between one end of the pull-in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2 and the pull-in locking rod detection mark line 3 is 20 mm, and the transverse distance between the other end and the extend locking rod detection mark line 4 is 20 mm;The transverse position of the pull-in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2 is determined close to the fitting position of the pull-in locking rod 1 and the extend locking rod 2;The pull-in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2 act with the pull-in locking rod 1 and the extend locking rod 2 respectively, and do not link with each other, and do not affect the action of the locking rod on the other side.

[0009] The top surface of the pull-in locking lever 1 and the extension locking lever 2 is provided with a milled groove for installing the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, the length and width of the milled groove are consistent with the length and width of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, and the depth of the milled groove is consistent with the thickness of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2.

[0010] The special installation mechanism C includes a special installation mechanism switch end cover side C-4 and a special installation mechanism digital display moving grid detection module side C-5 perpendicular to each other, the surface of the special installation mechanism switch end cover side C-4 is provided with a hollow circular hole C-1 corresponding to the electric switch end cover 5 fixing screw hole at both ends, the special installation mechanism digital display moving grid detection module side C-5 includes two first mounting seats C-6 and second mounting seats C-7 parallel to each other, a hollow detection window area C-2 is formed between the first mounting seat C-6 and the second mounting seat C-7, the center line of the hollow detection window area C-2 coincides with the line of the pull-in locking lever 1 and the extension locking lever 2, the width of the hollow detection window area C-2 is consistent with the sum of the width of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, a fixed screw C-3 is riveted at the middle position of the first mounting seat C-6 and the second mounting seat C-7, the special installation mechanism C is fixed on the electric switch end cover 5 through the hollow circular hole C-1 of the electric switch end cover fixing screw 6, and the gap between the bottom surface of the special installation mechanism C and the top surface of the pull-in locking lever 1 and the extension locking lever 2 is 0.1 to 0.5 mm.

[0011] The two rows of detection moving grids B-1 protrude 1 mm from the surface of the digital display moving grid detection module B, the protruding area of the detection moving grid B-1 is embedded in the hollow detection window area C-2 of the installation mechanism C, the surface of the detection moving grid B-1 is flush with the bottom surface of the special installation mechanism C, the two rows of detection moving grids B-1 are aligned with the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 respectively, and the gap is 0.1 to 0.5 mm;

[0012] The digital display moving grid detection module B has two parallel LCD screens B-2 on its top, which are used to display the notch offset measurement results when the locking rod 1 is pulled in and the locking rod 2 is extended. The top of the digital display moving grid detection module B has an ON / OFF switch button B-3, which is used to control the power-on and power-off of the digital display moving grid detection module B. The outer sides of the ends of the two LCD screens B-2 have two ZERO reset buttons B-4, which are used to calibrate the notch measurement value when the locking rod 1 is pulled in and the locking rod 2 is extended. The outer sides of the middle of the two LCD screens B-2 have mounting holes B-5, the diameter and position of which correspond to the fixing screws C-3 riveted to the special mounting mechanism C. The fixing screws C-3 pass through the special mounting mechanism C and are fixed to the special mounting mechanism C by nuts. The digital display moving grid detection module B has a battery compartment inside, and the battery compartment is equipped with a battery compartment cover B-6.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a dedicated installation mechanism C to install the digital display moving grid detection module B at the end cover 5 of the electric switch machine. This allows for the detection of the locking rod notch without opening the end cover 5 of the electric switch machine, and provides a more intuitive observation of the notch offset and the amount of offset.

[0015] 2. This utility model detects the relative displacement of the fixed grid A and the fixed digital display moving grid B-1 by detecting the relative displacement of the moving grid B-1 of the fixed grid A and the fixed digital display moving grid detection module B. The capacitance changes, and the charge coupling of the capacitor converts the mechanical displacement into an electrical signal, thus displaying the mechanical displacement. The offset measurement of the switch machine gap is changed from the original qualitative measurement to a quantitative measurement, and the measurement accuracy can reach 0.01mm, making the measurement more accurate.

[0016] 3. This utility model can achieve rapid calibration of the notch detection device when it is first put into use or when errors occur through the data zeroing function of the zeroing button of the digital display moving grid detection module B.

[0017] 4. This utility model uses a digital display moving grid detection module B installed above the locking rod of an electric switch machine to monitor the displacement of the locking rod detection grid A, which moves with the locking rod. After one calibration, by observing the values ​​on the LCD screen B-2 of the digital display moving grid detection module B, the offset direction and amount of the pull-in locking rod 1 and the extension locking rod 2 of the electric switch machine can be determined. Thus, the offset direction and amount of the indication gap of the pull-in locking rod 1 and the extension locking rod 2 of the electric switch machine can be directly determined. The operator can complete the indication gap inspection without opening the end cover 5 of the electric switch machine, and it does not affect the normal operation of the rail transit. Installing this device on each electric switch machine facilitates the operator's direct inspection of the indication gap of the electric switch machine.

[0018] 5, The utility model discloses a digital display movable grid detection module B installed above the locking rod of the electric switch machine, and displacement monitoring of locking rod detection fixed grid A moving with the locking rod is realized to realize intuitive detection of the indication gap of the electric switch machine.

[0019] In conclusion, the utility model discloses a digital display movable grid detection module B installed above the locking rod of the electric switch machine, and displacement monitoring of locking rod detection fixed grid A moving with the locking rod is realized to realize intuitive detection of the indication gap of the electric switch machine. The utility model has the advantages of accurate offset measurement, simple construction, convenient maintenance and reduced workload of field maintenance personnel. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model.

[0021] Figure 2 It is the structure schematic diagram of locking rod detection fixed grid A of the utility model.

[0022] Figure 3 It is the installation schematic diagram of locking rod detection fixed grid A of the utility model.

[0023] Figure 4 It is the structure schematic diagram of special installation mechanism C of the utility model.

[0024] Figure 5 It is the installation schematic diagram of special installation mechanism C of the utility model.

[0025] Figure 6 It is the structure schematic diagram of digital display movable grid detection module B of the utility model, wherein, Figure 6 (a) is the whole structure perspective drawing of digital display movable grid detection module B, Figure 6 (b) is the plan view of digital display movable grid detection module B, Figure 6 (c) is the side view of digital display movable grid detection module B, Figure 6 (d) is the bottom view of digital display movable grid detection module B.

[0026] Figure 7 It is the installation schematic diagram of digital display movable grid detection module B of the utility model.

[0027] In the figure: A, locking rod detection fixed grid; A-1, pull in locking rod detection fixed grid; A-2, extend locking rod detection fixed grid; B, digital display moving grid detection module; B-1, detection moving grid; B-2, liquid crystal screen; B-3, ON / OFF switch button; B-4, ZERO clear button; B-5, mounting hole; B-6, battery compartment cover plate; C, special mounting mechanism; C-1, hollow round hole, C-2, hollow detection window area; C-3, fixed screw; C-4, special mounting mechanism switch machine end cover side; C-5, special mounting mechanism digital display moving grid detection module side, C-6, first mounting seat; C-7, second mounting seat; 1, pull in locking rod; 2, extend locking rod; 3, pull in locking rod detection mark line; 4, extend locking rod detection mark line; 5, electric switch machine end cover; 6, electric switch machine end cover fixed screw. DETAILED DESCRIPTION

[0028] 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.

[0029] Please refer to Figures 1-3 A digital display gap detection device of an electric switch machine, comprising a locking rod detection fixed grid A, a digital display moving grid detection module B and a special mounting mechanism C, the locking rod detection fixed grid A comprises a pull in locking rod detection fixed grid A-1 mounted on the top of a pull in locking rod 1 of the electric switch machine and an extend locking rod detection fixed grid A-2 mounted on the top of an extend locking rod 2 of the electric switch machine; the digital display moving grid detection module B is fixed to an electric switch machine end cover 5 through the special mounting mechanism C; the bottom of the digital display moving grid detection module B is provided with two rows of detection moving grids B-1 in parallel, and the two rows of detection moving grids B-1 are respectively aligned with the pull in locking rod detection fixed grid A-1 and the extend locking rod detection fixed grid A-2.

[0030] The pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 are parallelly laid, and the length of each is 196mm, the two ends are aligned, the transverse center lines of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 coincide with the transverse center lines of the pull-in locking lever detection mark 3 and the extension locking lever detection mark 4; one end of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 is transversely 20mm away from the pull-in locking lever detection mark 3, and the other end is transversely 20mm away from the extension locking lever detection mark 4; the transverse positions of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 are close to the abutting positions of the pull-in locking lever 1 and the extension locking lever 2; the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 move with the pull-in locking lever 1 and the extension locking lever 2 respectively, and do not move together and do not affect the movement of the locking lever on the other side.

[0031] The top surface of the pull-in locking lever 1 and the extension locking lever 2 is provided with a milled groove for installing the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, the length and width of the milled groove are consistent with the length and width of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, and the depth of the milled groove is consistent with the thickness of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2.

[0032] As the preferred technical scheme of the utility model, in order to prevent the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 from colliding with the inner surface of the electric switch machine end cover 5 when the extension locking lever 2 and the pull-in locking lever 1 move, before installing the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, a milled groove needs to be milled at the installation position of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 on the top surface of the pull-in locking lever 1 and the extension locking lever 2, the length and width of the milled groove are consistent with the length and width of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, the length is 196mm, the width is 12mm, the depth of the milled groove is consistent with the thickness of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2, and the depth is 0.5mm. The pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 are installed in the milled groove through high-strength glue, and the height of the pull-in locking lever detection fixed grid A-1 and the extension locking lever detection fixed grid A-2 is flush with the height of the extension locking lever 2 and the pull-in locking lever 1 after installation.

[0033] Please refer to Figures 4-5The special installation mechanism C is fixed on the electric switch machine end cover 5 through the electric switch machine end cover fixing screw 6 passing through the hollow circular hole C-1, and the gap between the bottom surface of the special installation mechanism C and the top surface of the pull-in locking rod 1 and the extension locking rod 2 is 0.1 to 0.5 mm.

[0034] As a preferred technical scheme of the utility model, the special installation mechanism C is made of stainless steel with a thickness of 1 mm, includes mutually perpendicular special installation mechanism switch machine end cover side C-4 and special installation mechanism digital display movable fence detection module side C-5, hollow circular holes C-1 corresponding to electric switch machine end cover 5 fixing screw holes are arranged at both ends of the surface of the special installation mechanism switch machine end cover side C-4, the hole diameter and position are consistent with the electric switch machine end cover 5 fixing screw holes, the hole diameter is 9 mm, and the distance between the centers of the two holes is 71 mm. The special installation mechanism digital display movable fence detection module side C-5 includes two mutually parallel first mounting seat C-6 and second mounting seat C-7, and a hollow detection window area C-2 is formed between the first mounting seat C-6 and the second mounting seat C-7. The center line of the hollow detection window area C-2 coincides with the contact line of the extension locking rod 2 and the pull-in locking rod 1. The width of the hollow detection window area C-2 is consistent with the sum of the widths of the pull-in locking rod detection fixed fence A-1 and the extension locking rod detection fixed fence A-2, and is 24 mm. A fixed screw rod C-3 is riveted at the middle position of the steel plate on both sides of the detection area. The diameter of the fixed screw rod C-3 is 3 mm, and the height is 16 mm. The special installation mechanism C is fixed on the electric switch machine end cover 5 by using two original electric switch machine end cover fixing screws 6. After being fixed, the gap between the bottom surface of the special installation mechanism C and the top surface of the pull-in locking rod 1 and the extension locking rod 2 is 0.1 to 0.5 mm.

[0035] The detection movable fence B-1 is located at the bottom of the digital display movable fence detection module B and is integral with the digital display movable fence detection module B, as shown in Figure 6As shown in (c), after the digital display dynamic grid detection module B is installed with the special installation mechanism C, the surface of the digital display dynamic grid detection module B is parallel with the lower surfaces of the first mounting seat C-6 and the second mounting seat C-7. After being installed on the electric switch machine end cover 5, the surface of the digital display dynamic grid detection module B, the first mounting seat C-6 and the second mounting seat C-7 should have a gap with the pull-in locking rod 1, the extended locking rod 2 and the locking rod detection fixed grid A. The gap is infinite approach. If the two are attached, scraping between them will occur. If the gap is too large, the detection data will be inaccurate. Therefore, the gap is 0.1-0.5mm.

[0036] Please refer to Figures 6-7 The bottom of the digital display dynamic grid detection module B is provided with two rows of detection dynamic grids B-1 which are parallel and protrude from the bottom surface of the digital display dynamic grid detection module B by 1mm. The protruding area of the detection dynamic grid B-1 is embedded in the hollow detection window area C-2 of the special installation mechanism C. The surface of the detection dynamic grid B-1 is flush with the bottom surface of the special installation mechanism C. The two rows of detection dynamic grids B-1 are respectively aligned with the pull-in locking rod detection fixed grid A-1 and the extended locking rod detection fixed grid A-2, and the gap is 0.1-0.5mm.

[0037] The top of the digital display dynamic grid detection module B is provided with two liquid crystal screens B-2 which are parallel and are respectively used for displaying the notch offset measurement results of the pull-in locking rod 1 and the extended locking rod 2. The top of the digital display dynamic grid detection module B is provided with an ON / OFF switch button B-3 which is used for controlling the start and stop of the digital display dynamic grid detection module B. The outer sides of the ends of the two liquid crystal screens B-2 are symmetrically provided with two ZERO zero reset buttons B-4 which are respectively used for calibrating the notch measurement values of the pull-in locking rod 1 and the extended locking rod 2. The middle outer sides of the two liquid crystal screens B-2 are respectively provided with mounting holes B-5. The hole diameters and positions of the mounting holes B-5 correspond to the riveted fixed screw rods C-3 on the special installation mechanism C. The fixed screw rods C-3 of the special installation mechanism C are penetrated through and fixed by nuts. The digital display dynamic grid detection module B is internally provided with a battery compartment. The battery compartment is externally provided with a battery compartment cover plate B-6. LR44 button batteries are used to supply power to the digital display dynamic grid detection module B.

[0038] The working principle of the utility model is as follows:

[0039] After the locking rod detection fixed grid A, the digital display dynamic grid detection module B and the special installation mechanism C are installed, the relative position and gap of the detection dynamic grid B-1 at the bottom of the digital display dynamic grid detection module B and the locking rod detection fixed grid A are adjusted to ensure that the pull-in locking rod detection fixed grid A-1 and the extended locking rod detection fixed grid A-2 correspond to the two detection dynamic grids B-1 at the bottom of the digital display dynamic grid detection module B, and the gap is 0.1-0.5mm.

[0040] Take the monitoring principle of the notch of the extended locking rod as an example, when the electric switch machine pulls in the locking rod 1 and the extended locking rod 2 are both in the extended position, the notch of the extended locking rod 2 is adjusted to make the extended locking rod 2 notch meet the specification requirements, and at this time, the extended locking rod 2 is in the reference position.

[0041] The digital display moving grid detection module B is calibrated, the ZERO clear button B-4 of the digital display moving grid detection module B corresponding to the extended locking rod 2 is pressed, at this time, the liquid crystal screen B-2 on the side of the digital display moving grid detection module B corresponding to the extended locking rod 2 displays 0.00 mm, at this time, the calibration is completed.

[0042] When the electric switch machine starts from the pull-in position, the extended locking rod 2 moves with the action of the turnout point rail, the extended locking rod detection fixed grid A-2 on the extended locking rod 2 and the detection moving grid B-1 of the digital display moving grid detection module B produce relative displacement, the coverage area between them changes periodically, the capacitance also changes, the charge coupling mode of the capacitor converts the mechanical displacement into an electrical signal, and after a series of transformations and operations, the size of the mechanical displacement is displayed. At this time, the value displayed on the liquid crystal screen B-2 on the side of the digital display moving grid detection module B corresponding to the extended locking rod 2 is the action stroke of the switch machine locking rod.

[0043] When the electric switch machine starts from the pull-in position, the extended locking rod 2 moves with the action of the turnout point rail, the extended locking rod 2 moves with the action of the turnout point rail, the extended locking rod detection fixed grid A-2 on the extended locking rod 2 and the detection moving grid B-1 of the digital display moving grid detection module B produce relative displacement, the coverage area between them changes periodically, the capacitance also changes, the charge coupling mode of the capacitor converts the mechanical displacement into an electrical signal, and after a series of transformations and operations, the size of the mechanical displacement is displayed. At this time, the value displayed on the liquid crystal screen B-2 on the side of the digital display moving grid detection module B corresponding to the extended locking rod 2 is the action stroke of the switch machine locking rod.

[0044] When the value displayed on the liquid crystal screen B-2 on the side of the digital display moving grid detection module B corresponding to the extended locking rod 2 is not 0.00 mm, it indicates that the extended locking rod 2 notch has deviated, and the value is the deviation, at this time, the staff needs to adjust the extended locking rod 2 notch.

[0045] The detection of the extended locking rod 1 notch of the electric switch machine is the same as the above principle.

[0046] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A digital display notch detection device for an electric switch machine, characterized in that, The system includes a locking rod detection grid (A), a digital display moving grid detection module (B), and a special installation mechanism (C). The locking rod detection grid (A) includes a pull-in locking rod detection grid (A-1) installed on the top of the pull-in locking rod (1) of the electric switch machine and an extension locking rod detection grid (A-2) installed on the top of the extension locking rod (2) of the electric switch machine. The digital display moving grid detection module (B) is fixed to the end cover (5) of the electric switch machine through the special installation mechanism (C). Two rows of moving grids (B-1) are arranged parallel to each other at the bottom of the digital display moving grid detection module (B). The two rows of moving grids (B-1) are aligned with the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2), respectively.

2. The digital display notch detection device for an electric switch machine according to claim 1, characterized in that, The pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2) are laid parallel to each other, with their ends aligned. The transverse center lines of the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2) coincide with the transverse center lines of the pull-in locking rod detection mark (3) and the extension locking rod detection mark (4). The transverse distance between one end of the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2) and the pull-in locking rod detection mark (3) is 20 mm. mm, the other end is 20mm away from the detection mark (4) of the extended locking rod; the lateral position of the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2) is close to the contact position of the pull-in locking rod (1) and the extension locking rod (2); the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2) move with the pull-in locking rod (1) and the extension locking rod (2) respectively, without linkage between them, and without affecting the action of the locking rod on the other side.

3. The digital display notch detection device for an electric switch machine according to claim 1, characterized in that, The top surfaces of the pull-in locking rod (1) and the extension locking rod (2) are provided with milled grooves for installing the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2). The length and width of the milled grooves are consistent with the length and width of the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2), and the depth of the milled grooves is consistent with the thickness of the pull-in locking rod detection grid (A-1) and the extension locking rod detection grid (A-2).

4. The digital display notch detection device for an electric switch machine according to claim 1, characterized in that, The dedicated installation mechanism (C) includes a switch machine end cover side (C-4) and a digital display moving grid detection module side (C-5) that are perpendicular to each other. The switch machine end cover side (C-4) has perforated circular holes (C-1) at both ends of its surface, corresponding to the fixing screw holes of the electric switch machine end cover (5). The digital display moving grid detection module side (C-5) includes two parallel first mounting seats (C-6) and second mounting seats (C-7). A perforated detection window area (C-2) is formed between the first mounting seats (C-6) and the second mounting seats (C-7). The center line of the perforated detection window area (C-2) is aligned with the center line of the pull-in... The locking rod (1) and the extended locking rod (2) have their fitting lines aligned. The width of the hollow detection window area (C-2) is consistent with the sum of the widths of the pull-in locking rod detection grid (A-1) and the extended locking rod detection grid (A-2). A fixing screw (C-3) is riveted to the middle position of the first mounting base (C-6) and the second mounting base (C-7). The special mounting mechanism (C) is fixed to the electric switch machine end cover (5) by passing through the hollow round hole (C-1) with the electric switch machine end cover fixing screw (6). The gap between the bottom surface of the special mounting mechanism (C) and the top surface of the pull-in locking rod (1) and the extended locking rod (2) is 0.1 to 0.5 mm.

5. A digital display notch detection device for an electric switch machine according to claim 1 or 2, characterized in that, The two rows of moving detectors (B-1) protrude 1 mm from the bottom surface of the digital display moving detector module (B). The protruding area of ​​the moving detector (B-1) is embedded in the hollow detection window area (C-2) of the mounting mechanism (C). The surface of the moving detector (B-1) is flush with the bottom surface of the special mounting mechanism (C). The two rows of moving detectors (B-1) are aligned with the locking rod pull-in detection stationary detector (A-1) and the locking rod extension detection stationary detector (A-2) respectively, with a gap of 0.1 to 0.5 mm. The digital display moving grid detection module (B) has two parallel LCD screens (B-2) on its top, which are used to display the notch offset measurement results when the locking rod (1) is pulled in and the locking rod (2) is extended. The digital display moving grid detection module (B) has an ON / OFF switch button (B-3) on its top, which is used to control the power-on and power-off of the digital display moving grid detection module (B). The two LCD screens (B-2) have two ZERO reset buttons (B-4) symmetrically arranged on the outer side of their ends, which are used to calibrate the notch measurement value when the locking rod (1) is pulled in and the locking rod (2) is extended. The two LCD screens (B-2) have mounting holes (B-5) on the outer side of their middle parts. The diameter and position of the holes correspond to the fixing screws (C-3) riveted on the special mounting mechanism (C). The fixing screws (C-3) pass through the special mounting mechanism (C) and are fixed to the special mounting mechanism (C) by nuts. The digital display moving grid detection module (B) has a battery compartment inside, and a battery compartment cover (B-6) is configured on the outside of the battery compartment.

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