Limit inspection device

Abstract

The utility model discloses a limit inspection device which comprises two inspection units and a magnetic switch. Each inspection unit comprises an inner inspection plate and an outer inspection plate; the two inner inspection plates are positioned on the inner sides of the two stock rails; the two outer inspection plates are positioned on the outer sides of the two stock rails; the two stock rails are arranged at the tops of the two main bearing plates; the two main bearing plates are connected with the front ends and the rear ends of the multiple mounting frames correspondingly. The two inner inspection plates and the two outer inspection plates are connected through a connecting shaft; the left and right ends of the connecting shaft are connected with the mounting racks respectively; the outer inspection plate on the left side is connected with the movable contact assembly; the static contact assembly is arranged on the left of the movable contact assembly; the static contact assembly is connected with a mounting rack; the magnetic switch comprises a magnetic head and a conductive switch; a magnetic head is arranged on the movable contact assembly; the static contact assembly is provided with a conductive switch. Whether the bottom position of a humping vehicle or a shunting locomotive meets the requirement or not can be reliably checked in advance, and the bottom of a vehicle body is prevented from rubbing ground equipment in front.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to a clearance inspection device. Background Technology

[0002] When cars are shunted at a hump yard, the bottom of the cars or shunting locomotives may scrape or even damage ground equipment (such as car speed reducers or other equipment installed under the hump) during the shunting process or when the locomotive is pulling cars that are being shunted in the wrong direction.

[0003] However, currently existing hump marshalling yards do not have a matching device that can reliably check whether the bottom position (e.g., height) of shunting cars or locomotives meets the requirements, preventing the bottom of shunting cars or locomotives from scraping against ground equipment (e.g., vehicle speed reducers) located in front (i.e., in front of the direction of vehicle travel), so as to assist in the monitoring and management of hump marshalling yards. Utility Model Content

[0004] The purpose of this invention is to provide a clearance inspection device to address the technical deficiencies of existing technologies.

[0005] Therefore, this utility model provides a clearance inspection device, including two inspection units and two main load-bearing plates, as well as a moving contact assembly, a stationary contact assembly and a magnetic switch;

[0006] Each inspection unit includes an inner inspection plate and an outer inspection plate;

[0007] The two inner inspection plates in the two inspection units are located inside the two basic rails that are longitudinally distributed and arranged in parallel with each other;

[0008] The two outer inspection plates in the two inspection units are located outside the two basic rails;

[0009] Two basic rails are fixedly installed on the top of two horizontally distributed main load-bearing plates.

[0010] Among them, the two main load-bearing plates are respectively connected to the front and rear ends of multiple longitudinally distributed mounting brackets;

[0011] The two inner inspection plates and the two outer inspection plates are connected together by a horizontally distributed connecting shaft.

[0012] The left and right ends of the connecting shaft are each connected to a mounting bracket;

[0013] The outer inspection plate on the left is connected to the moving contact.

[0014] To the left of the moving contact, there is a stationary contact.

[0015] The stationary contact is fixedly connected to a mounting bracket;

[0016] Magnetic switches, including magnetic heads and conductive switches;

[0017] The moving contact is equipped with a magnetic head;

[0018] The stationary contact assembly is located at a position corresponding to the magnetic head, and a conductive switch is provided there.

[0019] As can be seen from the technical solution provided by this utility model above, compared with the prior art, this utility model provides a clearance inspection device with a scientific design. It can conveniently and reliably check in advance whether the bottom position (e.g., height) of the shunting car or shunting locomotive meets the requirements, preventing the bottom of the shunting car or shunting locomotive from scraping against ground equipment (e.g., vehicle reducers or other equipment) located in front (i.e., in front of the vehicle's direction of travel) when the shunting car or shunting locomotive continues to move forward. This assists in the monitoring and management of hump yards and has significant practical significance.

[0020] By applying the clearance inspection device of this invention in a hump marshalling yard, it is possible to detect whether the lower clearance (i.e., the lowest position of the lower part of the car body) of shunting locomotives and freight cars exceeds the standard clearance (the standard clearance is, for example, the upper clearance of the vehicle reducer release position specified in the Chinese Railway Industry Standard TB / T2845.1-2019 "Vehicle Reducers Part 1: Clamp-type Reducers"). This allows for the screening out of freight cars or shunting locomotives that exceed the standard clearance. Furthermore, the magnetic switch provided by this invention sends specific switching signals (including closed and open signals) to the hump automatic control system (e.g., the TW-2 type hump automatic control system produced by China Railway Signal & Communication Corporation), assisting in the monitoring and management of the hump marshalling yard and helping to protect the vehicle reducers and other equipment used in the hump marshalling yard.

[0021] It should be noted that for existing hump yard automatic control systems (such as the TW-2 type hump yard automatic control system manufactured by China Railway Signal & Communication Corporation), when the hump yard automatic control system receives a closed signal, it will not alarm and will proceed with normal shunting operations. When the hump yard automatic control system receives a disconnect signal, it will issue an alarm. At this time, the on-site personnel will suspend pushing the shunting vehicles. The control room management personnel will work with the on-site personnel to check and confirm whether the oversized vehicles (i.e., vehicles whose lower clearance exceeds the standard clearance) will cause serious damage and affect shunting safety. If there is no impact, the on-site personnel will deactivate the alarm and shunt normally. If there is an impact, the on-site personnel will report to the control system management personnel, who will coordinate with the shunting locomotive to pull the oversized vehicles off the siding. After the vehicles are pulled off, the on-site personnel will deactivate the alarm and resume vehicle shunting. Attached Figure Description

[0022] Figure 1a This is a schematic diagram of the installation state structure of a clearance inspection device provided by this utility model; the basic track in the figure only shows a section that cooperates with the device of this utility model, and is only a part of the basic track;

[0023] Figure 1b for Figure 1a An enlarged view of the left-hand portion of the diagram;

[0024] Figure 1c for Figure 1a An enlarged view of the central part of the diagram;

[0025] Figure 1d for Figure 1a An enlarged view of the right-hand area in the diagram;

[0026] Figure 2 A three-dimensional structural diagram of the outer inspection plate in a clearance inspection device provided by this utility model;

[0027] Figure 3 A three-dimensional structural diagram of the inner inspection plate in a clearance inspection device provided by this utility model;

[0028] Figure 4 A three-dimensional structural diagram of the shafts in a clearance inspection device provided by this utility model;

[0029] Figure 5 A three-dimensional structural diagram of the moving contacts in a clearance inspection device provided by this utility model;

[0030] Figure 6 A three-dimensional structural diagram of the stationary contact points in a clearance inspection device provided by this utility model;

[0031] In the diagram, 1—inner inspection plate, 2—outer inspection plate, 3—connecting shaft (e.g., steel pipe), 4—protective plate, 5—moving contact plate;

[0032] 6—Main load-bearing plate (e.g., long angle steel), 7—Mounting bracket, 8—Torsion spring, 9—Adjusting screw, 10—Spring clip;

[0033] 11—Fixing block (e.g., angle iron), 12—Common pad;

[0034] 17—Outer spherical bearing with mounting plate; 18—Plate head; 19—Shaft head; 20—Magnetic head;

[0035] 21—Slotted nut, 22—Support plate, 23—Mounting plate, 24—Magnetic switch, 25—Junction box;

[0036] 26—Baffle, 27—Basic rail. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] See Figures 1a to 1d , Figures 2 to 6 This utility model provides a clearance inspection device, including: two inspection units and two main load-bearing plates (specifically long angle steel 6), as well as a moving contact assembly, a stationary contact assembly and a magnetic switch;

[0042] Each inspection unit includes an inner inspection plate 1 and an outer inspection plate 2;

[0043] The two inner inspection plates 1 in the two inspection units are located inside the two basic rails 27 that are longitudinally distributed and arranged in parallel with each other (i.e., the position between the two basic rails 27).

[0044] It should be noted that the parallel and spaced-apart main rails (each main rail includes multiple main rails 27 connected in sequence) are a common original structure on railways, on which train wheels are used to run; for example, the two parallel main rails 27 are used to run shunting vehicles or shunting locomotives.

[0045] The clearance inspection device of this invention is located closer to the oncoming direction of the shunting vehicle or locomotive than ground equipment (such as vehicle reducers or other equipment). The two basic rails 27 installed in this invention are located closer to the oncoming direction of the shunting vehicle or locomotive than ground equipment (such as vehicle reducers or other equipment). This invention can conveniently and reliably check in advance whether the bottom position (e.g., height) of the shunting vehicle or locomotive meets the requirements, preventing the bottom of the shunting vehicle or locomotive from scraping against the ground equipment (such as vehicle reducers or other equipment) located in front (i.e., in front of the vehicle's direction of travel) when the shunting vehicle or locomotive continues to move forward.

[0046] The two outer inspection plates 2 in the two inspection units are located on the outside of the two basic rails 27 (i.e., on opposite sides);

[0047] Among them, two basic rails 27 are fixedly installed on the top of two horizontally distributed main load-bearing plates 6;

[0048] Among them, the two main load-bearing plates 6 are respectively connected to the front and rear ends of multiple (e.g., four) longitudinally distributed mounting brackets 7 (by bolts);

[0049] Among them, two inner inspection plates 1 and two outer inspection plates 2 are connected together by a horizontally distributed connecting shaft 3;

[0050] The left and right ends of the connecting shaft 3 are respectively connected to a mounting bracket 7.

[0051] Among them, the outer inspection plate 2 on the left is connected to the moving contact assembly;

[0052] On the left side of the moving contact assembly, a static contact assembly is provided;

[0053] The static contact assembly is fixedly connected to a mounting bracket 7;

[0054] The magnetic switch includes a magnetic head 20 and a conductive switch 24 (i.e., a magnetic switch);

[0055] On the moving contact assembly, a magnetic head 20 is provided;

[0056] On the static contact assembly at a position corresponding to the magnetic head 20, a conductive switch 24 (i.e., a magnetic switch) is provided.

[0057] In the present utility model, specifically, two main bearing plates 6 are longitudinally arranged at intervals;

[0058] Between the two main bearing plates 6, there is a device installation groove (i.e., the longitudinal gap between the two main bearing plates 6) with a horizontal distribution and an open top;

[0059] The two inner inspection plates 1 and the two outer inspection plates 2 are located in the device installation groove;

[0060] It should be noted that the overall shape of the main bearing plate 6 is L-shaped.

[0061] Specifically, the connecting shaft 3 is located in the device installation groove;

[0062] The connecting shaft 3 horizontally passes under the two basic rails 27.

[0063] In the present utility model, specifically, the two inner inspection plates 1 are symmetrically distributed left and right;

[0064] The two outer inspection plates 2 are symmetrically distributed left and right;

[0065] In the present utility model, specifically, the centers of the two inner inspection plates 1 and the two outer inspection plates 2 are located on the same vertical plane.

[0066] In the present utility model, specifically, the shape of the mounting bracket 7 is an inverted "U" shape.

[0067] In the present utility model, specifically, refer to Figure 2 、 Figure 3Both the inner inspection plate 1 and the outer inspection plate 2 have a plate head 18 protruding upwards at one end near the adjacent basic rail 27.

[0068] In practice, both the inner inspection plate 1 and the outer inspection plate 2 are welded to the plate head 18.

[0069] It should be noted that, for this utility model, the inner inspection plate consists of an inner inspection plate 1 and a plate head 18, see [reference]. Figure 2 The external inspection panel consists of an external inspection panel 2 and a panel head 18, see [link / reference]. Figure 3 .

[0070] In this utility model, specifically, the inner inspection plate 1 is fixedly connected to the connecting shaft 3 by multiple (e.g., four) first bolts;

[0071] The outer inspection plate 2 is fixedly connected to the connecting shaft 3 by multiple (e.g., four) second bolts;

[0072] In specific implementation, the inner inspection plate 1 includes a first front clamping plate 101 and a first rear clamping plate 102 symmetrically distributed front and rear;

[0073] The tops of the first front clamping plate 101 and the first rear clamping plate 102 are connected;

[0074] A first inspection plate opening groove 103 is provided between the first front clamping plate 101 and the first rear clamping plate 102;

[0075] The connecting shaft 3 passes laterally through the opening slot 103 of the first inspection plate;

[0076] The lower ends of the first front clamping plate 101 and the first rear clamping plate 102 of the inner inspection plate 1 are each provided with a plurality (e.g., four) first inspection plate through holes 1001 that are horizontally and equally spaced.

[0077] The first inspection plate through hole 1001 on the first front clamping plate 101 and the first rear clamping plate are symmetrically distributed front and rear;

[0078] The connecting shaft 3 is provided with a first connecting shaft through hole 301 at a position corresponding to each first inspection plate through hole 1001;

[0079] After the first bolt passes through the first connecting shaft through hole 301 and the first inspection plate through hole 1001 on the first front clamping plate 101 and the first rear clamping plate 102 of the inner inspection plate 1, it is threadedly fixed to the first nut.

[0080] In specific implementation, the outer inspection plate 2 includes a second front clamping plate 201 and a second rear clamping plate 202 symmetrically distributed front and rear;

[0081] The tops of the second front clamping plate 201 and the second rear clamping plate 202 are connected;

[0082] Between the second front clamping plate 201 and the second rear clamping plate 202, there is a second inspection plate opening groove 203;

[0083] The connecting shaft 3 passes laterally through the opening slot 203 of the second inspection plate;

[0084] The lower ends of the second front clamping plate 201 and the second rear clamping plate 202 of the outer inspection plate 2 are each provided with a plurality (e.g., four) of second inspection plate through holes 2001 that are horizontally and equally spaced.

[0085] The second inspection plate through holes 2001 on the second front clamping plate 201 and the second rear clamping plate 202 are symmetrically distributed front and rear.

[0086] The connecting shaft 3 is provided with a second connecting shaft through hole 302 at a position corresponding to each second inspection plate through hole 2001;

[0087] After the second bolt passes through the second connecting shaft through hole 302 and the second inspection plate through hole 2001 on the second front clamping plate 201 and the second rear clamping plate 202 of the outer inspection plate 2, it is threadedly fixed to the second nut.

[0088] In this utility model, for specific implementation, please refer to the following: Figure 4 As shown, a shaft head 19 is provided at each of the left and right ends of the connecting shaft 3;

[0089] Each shaft head 19 is connected to the inner ring of an outer spherical bearing 17;

[0090] Each spherical bearing 17 is located at the longitudinal center of the top surface of a mounting bracket 7;

[0091] Furthermore, the outer spherical bearing 17 is fixedly connected to the mounting bracket 7 by a third bolt.

[0092] Furthermore, the shaft head 19 is welded to the connecting shaft 3.

[0093] In this utility model, for specific implementation, see [link to relevant documentation]. Figure 5 The moving contact consists of a moving contact plate 5.

[0094] The left side of the outer inspection plate 2 located on the left is fixedly connected (e.g., welded) to the moving contact plate 5 in the moving contact assembly;

[0095] On the left side of the moving contact plate 5, there is a magnetic head 20 for a magnetic switch.

[0096] In practice, a slotted nut 21 is also welded to the left side of the moving contact plate 5;

[0097] The slotted nut 21 is threadedly connected to the magnetic head 20.

[0098] In specific implementation, the lower end of the moving contact plate 5 has a moving contact plate opening groove 501;

[0099] The connecting shaft 3 passes laterally through the opening slot 501 of the moving contact plate.

[0100] It should be noted that, for this utility model, the moving contact assembly may include a moving contact plate 5 and a slotted nut 21. The moving contact plate 5 of the moving contact assembly is equipped with a magnetic head 20 of a magnetic switch. See [reference needed]. Figure 5 .

[0101] In terms of specific implementation, the static contact consists of a protective plate 4;

[0102] On the left side of the moving contact plate 5, there is a protective plate 4 from the stationary contact assembly;

[0103] A conductive switch 24 (i.e., a magnetic switch) is provided on the protective plate 4 at a position corresponding to the magnetic head 20;

[0104] Furthermore, the protective plate 4 is located on the left side of the mounting plate 23;

[0105] Mounting plate 23 is disposed at the upper end of support plate 22;

[0106] The lower end of the support plate 22 is fixedly connected to a mounting bracket 7 (by bolt and nut assembly).

[0107] It should be noted that the conductive switch 24 (i.e., magnetic switch) is equipped with a junction box 25.

[0108] It should be noted that, for this utility model, the static contact assembly may include a protective plate 4, a support plate 22, a mounting plate 23, and a junction box 25, which are connected by ordinary bolts, nuts, etc. (See [reference needed]). Figure 6 A conductive switch 24 (i.e., a magnetic switch) is installed on the protective plate 4, which consists of stationary contacts.

[0109] It should be noted that the magnetic switch is a contactless magnetic switch, comprising a magnetic head 20 and a conductive switch 24 (i.e., a magnetic switch). When the magnetic head 20 approaches or moves away from the conductive switch 24 (i.e., the magnetic switch), the magnetic flux sensed by the conductive switch (i.e., the magnetic switch) changes, thereby causing the conductive switch (i.e., the magnetic switch) to activate: when the magnetic head 20 approaches the conductive switch 24 (i.e., the magnetic switch), the conductive switch 24 is turned on; conversely, when the magnetic head 20 moves away from the conductive switch 24 (i.e., the magnetic switch), the conductive switch 24 is turned off. Magnetic switches are commonly used to detect and control changes in magnetic fields in circuits and are an important industrial automation control component. In this invention, in specific implementation, the activation or deactivation of the conductive switch is mainly achieved by changing the magnitude of the magnetic flux around the conductive switch 24.

[0110] It should be noted that the conductive switch 24 (i.e., magnetic switch) has two wires leading out and connected to the two terminals of the junction box 25 (which serves as a signal transmission terminal). The monitoring module built into the hump automatic control system has two wires leading out and connected to the two terminals of the two wires leading out of the conductive switch 24 (i.e., magnetic switch). This enables the switch signal to be transmitted to the monitoring module of the hump automatic control system, which then determines whether to issue an alarm.

[0111] It should be noted that magnetic switches are conventional electrical components with mature existing technology and are readily available finished electrical components. For example, magnetic switches produced by Tianjin Railway Signal Co., Ltd. can be used.

[0112] In this utility model, specifically, a fixing block (specifically an angle iron) 11 is provided on the top of the main load-bearing plate 6;

[0113] The fixing block 11 includes a horizontal part 1101 and a curved part 1102;

[0114] The lower end of the curved portion 1102 is connected to the top of the horizontal portion 1101 at the end facing the base rail 27;

[0115] The bent portion 1102 of the fixing block 11 is fixedly connected to the base rail 27 by a fourth bolt;

[0116] The horizontal part 1101 of the fixing block 11 is fixedly connected to the main load-bearing plate 6 by two fifth bolts;

[0117] It should be noted that the shape of the curved part of the fixing block 11 corresponds to and matches the shape of the left and right sides of the basic rail 27, and the curved part is arc-shaped.

[0118] In a specific implementation, the bent portion 1102 of the fixing block 11 is provided with a first fixing block through hole that extends laterally;

[0119] The basic rail 27 is provided with a transverse through hole at the position corresponding to the through hole of the first fixing block;

[0120] After the fourth bolt passes through the corresponding through hole of the first fixing block and the through hole of the basic rail, it is threadedly fixed to the fourth nut.

[0121] In specific implementation, the horizontal part 1101 of the fixing block 11 has two through holes for the second fixing block vertically penetrating through it;

[0122] The through holes of the two second fixing blocks are distributed laterally at intervals;

[0123] The main load-bearing plate 6 has through holes at positions corresponding to the through holes of each second fixing block;

[0124] After the fifth bolt passes through the through hole of the second fixing block and the through hole of the main load-bearing plate corresponding to the position, it is threadedly fixed to the fifth nut.

[0125] Furthermore, between the horizontal portion 1101 of the fixing block 11 and the top surface of the main load-bearing plate 6, a common pad 12, an angle steel pad, an insulating plate, and an insulating pad are arranged sequentially from top to bottom.

[0126] It should be noted that a circular insulating tube is installed inside the through hole of the main load-bearing plate. The insulating tube is circular and is placed in the through hole of the main load-bearing plate 6 for the fifth bolt to pass through (i.e., the through hole of the main load-bearing plate). An insulating plate is placed on top of the main load-bearing plate 6 and an insulating pad is placed below it to achieve insulation between the main load-bearing plate 6 and the basic rail 27, thereby achieving insulation between the two rows of basic rails.

[0127] In this utility model, specifically, the connecting shaft 3 is fitted with two torsion springs 8 on both the left and right sides of each inner inspection plate 1, and one end of each torsion spring 8 is connected to the adjacent inner inspection plate 1, and the other end of each torsion spring 8 is connected to a mounting bracket 7.

[0128] In terms of specific implementation, a spring clip 10 is provided (specifically welded) on the front right end of both inner inspection plates 1;

[0129] On the rear left end of both inner inspection plates 1, a spring clip 10 is provided (specifically welded);

[0130] Each torsion spring 8 has its two ends connected to a spring clip 10 on the adjacent inner inspection plate 1 and an adjusting bolt 9 on the top of an adjacent mounting bracket 7, respectively.

[0131] Furthermore, for any inner inspection plate 1, the other ends of the two torsion springs 8 connected to it are respectively connected to two adjusting bolts 9 on two mounting brackets 7 that are not on the same side.

[0132] Furthermore, the spring clip 10 is U-shaped;

[0133] One end of the torsion spring 8 is inserted into the inside of the spring clip 10.

[0134] Furthermore, the upper end of the adjusting bolt 9 has a longitudinal through hole;

[0135] The other end of the torsion spring 8 is inserted through the through hole at the upper end of the adjusting bolt 9.

[0136] Furthermore, the two torsion springs 8 connected to each inner inspection plate 1 are rotationally symmetrically distributed;

[0137] Furthermore, the two torsion springs 8 connected to each inner inspection plate 1 have opposite torsional directions, that is, the two torsion springs 8 are a positive torsion spring and a negative torsion spring, respectively.

[0138] It should be noted that the adjusting bolt 9 is installed on the mounting bracket 7 using a standard nut.

[0139] In this utility model, specifically, the inner inspection plate 1, the outer inspection plate 2, the main load-bearing plate 6, the mounting bracket 7, and other components are made of Q235B or higher grade steel through processing and welding.

[0140] In this utility model, specifically, in the initial state (i.e., when no external force is applied), the height of the top positions of the inner and outer inspection plate assemblies conforms to the height requirements of the upper clearance of the vehicle reducer release position as specified in the Chinese railway industry standard TB / T2845.1-2019 "Vehicle Reducers Part 1: Clamp-type Reducers". That is, the height of the top positions of the inspection plate assemblies and the outer inspection plate assemblies is equal to the height of the standard clearance (i.e., the upper clearance of the vehicle reducer release position).

[0141] The highest positions of the inner inspection plate assembly and the outer inspection plate assembly are at the same height, that is, the top surface height of the plate head 18 on the inner inspection plate 1 is the same as the top surface height of the plate head 18 on the outer inspection plate 2.

[0142] It should be noted that the vehicle reducer is located in front of the shunting vehicle or locomotive when it continues to move forward. That is, the vehicle reducer is located in front of the base rail (i.e., railway track) in front of the base rail where the clearance inspection device of this utility model is installed. Specifically, the brake rail (or brake beam) on the vehicle reducer installed on the ground is located next to the base rail in front. The brake rail (or brake beam) is used to rub and clamp the wheels on the base rail for braking.

[0143] To better understand the technical solution of this utility model, the working principle of this utility model is explained below.

[0144] When the clearance inspection device provided by this utility model is not activated (i.e., when it is not subjected to external force), the inner inspection plate 1 and the outer inspection plate 2 are perpendicular to the basic rail 27. At this time, the magnetic head 20 in the moving contact assembly coincides with the center of the conductive switch (i.e., magnetic switch) 24 in the stationary contact assembly. The conductive switch (i.e., magnetic switch) 24 is turned on, and a closing signal is input to the external hump automatic control system. At this time, the hump automatic control system has no alarm and the vehicle is released normally.

[0145] When an oversized vehicle (i.e., a vehicle whose lower limit exceeds the upper limit of the vehicle's reducer) passes by, the bottom of the oversized vehicle will impact the inner or outer inspection plate assembly, causing the shaft assembly (including the connecting shaft 3 and the shaft head 19) and the moving contact assembly to rotate around the center of the bearing hole of the outer spherical bearing 17. This causes the magnetic head 20 in the moving contact assembly to deviate from the conductive switch (i.e., the magnetic switch) 24, opening the conductive switch (i.e., the magnetic switch) and inputting a disconnect signal to the external hump automatic control system. Upon receiving the disconnect command, the hump automatic control system will issue an alarm.

[0146] At the same time, the torsion spring 8 on one side is compressed and the torsion spring 8 on the other side is stretched. When the external force disappears, the inner inspection plate assembly and the outer inspection plate assembly rebound to the initial vertical position under the action of the torsion spring. The center of the magnetic head 20 in the moving contact assembly and the center of the conductive switch (i.e. magnetic switch) 24 in the stationary contact assembly are re-aligned. The magnetic switch is re-connected and a closing signal is re-input to the external hump automatic control system. At this time, the hump automatic control system is still in the alarm state. The alarm is lifted after the on-site personnel have eliminated the risk and confirmed that there is no risk. The vehicle can then be released normally.

[0147] In summary, the clearance inspection device provided by this utility model has a reasonable structure, is convenient and reliable, and can effectively detect oversized vehicles and shunting locomotives.

[0148] Compared with the prior art, the clearance inspection device provided by this utility model has the following beneficial effects:

[0149] 1. The clearance inspection device of this utility model is based on the clearance size (e.g., the upper clearance of the vehicle reducer release position as specified in the Chinese railway industry standard TB / T2845.1-2019 "Vehicle Reducers Part 1: Clamp-type Reducers") to process the dimensions of the inner inspection plate assembly and the outer inspection plate assembly, and achieves deflection and reset through a torsion spring. It has a reasonable structure, is easy to install, and has a long service life.

[0150] It should be noted that in the initial state (i.e., when no external force is applied), the height of the top position of the inner inspection plate assembly and the outer inspection plate assembly is equal to the height of the upper limit of the vehicle reducer (e.g., the upper limit of the vehicle reducer release position as specified in the Chinese railway industry standard TB / T2845.1-2019 "Vehicle Reducers Part 1: Clamp-type Reducers").

[0151] 2. The clearance inspection device of this utility model uses an outer spherical bearing with a seat as a rotation support, which allows for flexible rotation without jamming.

[0152] 3. In the clearance inspection device of this utility model, the moving contact and the stationary contact adopt non-contact magnetic switches (including magnetic heads and conductive switches 24 as magnetic switches) as switch contacts, which reduces maintenance and increases service life.

[0153] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A gauging device, characterized in that It includes two inspection units, two main bearing plates (6), a moving contact assembly, a static contact assembly, and a magnetic switch; Each inspection unit includes an inner inspection plate (1) and an outer inspection plate (2); The two inner inspection plates (1) in the two inspection units are located inside two basic rails (27) that are longitudinally distributed and arranged in parallel; The two outer inspection plates (2) in the two inspection units are located outside the two basic rails (27); Among them, the two basic rails (27) are fixedly arranged on the tops of two main bearing plates (6) that are transversely distributed; Among them, the two main bearing plates (6) are respectively connected to the front and rear ends of a plurality of longitudinally distributed mounting brackets (7); Among them, the two inner inspection plates (1) and the two outer inspection plates (2) are connected together by a transversely distributed connecting shaft (3); The left and right ends of the connecting shaft (3) are respectively connected to a mounting bracket (7); Among them, the outer inspection plate (2) on the left is connected to the moving contact assembly; On the left side of the moving contact assembly, a static contact assembly is arranged; The static contact assembly is fixedly connected to a mounting bracket (7); The magnetic switch includes a magnetic head (20) and a conductive switch (24); A magnetic head (20) is arranged on the moving contact assembly; On the static contact assembly, at a position corresponding to the magnetic head (20), a conductive switch (24) is arranged.

2. The limit checking apparatus of claim 1, wherein The two main bearing plates (6) are longitudinally spaced apart; Between the two main bearing plates (6), there is an equipment installation groove that is transversely distributed and has an open top; The two inner inspection plates (1) and the two outer inspection plates (2) are located in the equipment installation groove; The connecting shaft (3) is located in the equipment installation groove; The connecting shaft (3) transversely passes under the two basic rails (27); and / or, The two inner inspection plates (1) are symmetrically distributed left and right; The two outer inspection plates (2) are symmetrically distributed left and right; and / or, The central points of the two inner inspection plates (1) and the two outer inspection plates (2) are located on the same vertical plane; and / or, The shape of the mounting bracket (7) is an inverted "C" shape.

3. The boundary inspection apparatus of claim 1, wherein At one end of the tops of the inner inspection plate (1) and the outer inspection plate (2) close to the adjacent basic rail (27), a plate head (18) is prominently arranged upward; The inner inspection plate (1) is fixedly connected to the connecting shaft (3) through a plurality of first bolts; The outer inspection plate (2) is fixedly connected to the connecting shaft (3) through a plurality of second bolts.

4. The boundary inspection apparatus of claim 3, wherein The inner inspection plate (1) includes a first front clamping plate (101) and a first rear clamping plate (102) that are symmetrically distributed front and rear; The tops of the first front clamping plate (101) and the first rear clamping plate (102) are connected; Between the first front clamping plate (101) and the first rear clamping plate (102), there is a first inspection plate opening groove (103); The connecting shaft (3) transversely penetrates through the first inspection plate opening groove (103); At the lower ends of the first front clamping plate (101) and the first rear clamping plate (102) of the inner inspection plate (1), a plurality of first inspection plate through holes (1001) that are transversely and equidistantly distributed are arranged; The first inspection plate through holes (1001) on the first front clamping plate (101) and the first rear clamping plate are symmetrically distributed front and rear; The connecting shaft (3) is provided with a first connecting shaft through hole (301) at a position corresponding to each first inspection plate through hole (1001); The first bolt is threadedly connected with the first nut after passing through the first connecting shaft through hole (301) and the first inspection plate through hole (1001) on the first front clamping plate (101) and the first rear clamping plate (102) of the inner inspection plate (1); And / or, The outer inspection plate (2) comprises a second front clamping plate (201) and a second rear clamping plate (202) which are symmetrically distributed front and back; The top of the second front clamping plate (201) and the second rear clamping plate (202) is connected; The second front clamping plate (201) and the second rear clamping plate (202) are provided with a second inspection plate opening groove (203) therebetween; The connecting shaft (3) transversely penetrates through the second inspection plate opening groove (203); The second front clamping plate (201) and the second rear clamping plate (202) of the outer inspection plate (2) are provided with a plurality of second inspection plate through holes (2001) which are transversely and equidistantly distributed at lower ends thereof; The second inspection plate through holes (2001) on the second front clamping plate (201) and the second rear clamping plate (202) are symmetrically distributed front and back; The connecting shaft (3) is provided with a second connecting shaft through hole (302) at a position corresponding to each second inspection plate through hole (2001); The second bolt is threadedly connected with the second nut after passing through the second connecting shaft through hole (302) and the second inspection plate through hole (2001) on the second front clamping plate (201) and the second rear clamping plate (202) of the outer inspection plate (2).

5. The boundary inspection apparatus of claim 1, wherein The left and right ends of the connecting shaft (3) are respectively provided with an axle head (19); Each axle head (19) is connected with an inner ring of an outer spherical bearing with seat (17); Each outer spherical bearing with seat (17) is arranged at a top longitudinal middle portion of a mounting frame (7).

6. The boundary inspection apparatus of claim 1, wherein The movable contact component comprises a movable contact plate (5); The left side of the outer inspection plate (2) is fixedly connected with the movable contact plate (5) in the movable contact component; The left side of the movable contact plate (5) is provided with a magnetic head (20) of a magnetic switch; The stationary contact component comprises a protective plate (4); The left side of the movable contact plate (5) is provided with the protective plate (4) in the stationary contact component; The protective plate (4) is provided with a conductive switch (24) at a position corresponding to the magnetic head (20); The protective plate (4) is arranged at the left side of a mounting plate (23); The mounting plate (23) is arranged at the upper end of a support plate (22); The lower end of the support plate (22) is fixedly connected with a mounting frame (7).

7. The boundary inspection apparatus of claim 1, wherein The top of the main bearing plate (6) is provided with a fixed block (11); The fixed block (11) comprises a horizontal portion (1101) and a curved portion (1102); The lower end of the curved portion (1102) is connected with the top of one end of the horizontal portion (1101) which faces the basic rail (27); The curved portion (1102) of the fixed block (11) is fixedly connected with the basic rail (27) through a fourth bolt; The horizontal portion (1101) of the fixed block (11) is fixedly connected with the main bearing plate (6) through two fifth bolts.

8. The boundary inspection apparatus of claim 7, wherein The bending part (1102) of the fixing block (11) is provided with a first fixing block through hole which is transversely penetrated; The base rail (27) is provided with a base rail through hole which is transversely penetrated at a position corresponding to the first fixing block through hole; The fourth bolt is threadedly fixedly connected with the fourth nut after sequentially penetrating the position corresponding first fixing block through hole and the base rail through hole; And / or, The horizontal part (1101) of the fixing block (11) is vertically penetrated with two second fixing block through holes; The two second fixing block through holes are transversely spaced apart; The main load bearing plate (6) is provided with a main load bearing plate through hole at a position corresponding to each second fixing block through hole; The fifth bolt is threadedly fixedly connected with the fifth nut after penetrating the position corresponding second fixing block through hole and the main load bearing plate through hole.

9. The bound checking device of any one of claims 1 to 8, wherein, The connecting shaft (3) is sleeved with two torsion springs (8) on the left and right sides of each inner inspection plate (1), and one end of the two torsion springs (8) is connected with the adjacent inner inspection plate (1), and the other end of the two torsion springs (8) is respectively connected with an installation frame (7).

10. The boundary inspection apparatus of claim 9, wherein The front right end of the two inner inspection plates (1) is provided with a spring clamp (10); The rear left end of the two inner inspection plates (1) is provided with a spring clamp (10); The two ends of each torsion spring (8) are respectively connected with the spring clamp (10) on the adjacent inner inspection plate (1) and the adjusting bolt (9) arranged on the top of the adjacent installation frame (7); And / or, The two torsion springs (8) connected with each inner inspection plate (1) are rotationally symmetrically distributed; And / or, The torsion directions of the two torsion springs (8) connected with each inner inspection plate (1) are opposite.

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