Limit inspection device

Abstract

The invention discloses a limit inspection device. The limit inspection device 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 located in front.

Description

Technical Field

[0001] The invention relates to the technical field of rail transportation, and in particular to a clearance inspection device. Background Art

[0002] When a vehicle is being shunted at a hump marshaling yard, the bottom of the shunting vehicle or the shunting locomotive may scratch or even damage the ground equipment (such as the vehicle reducer or other equipment installed under the hump slope) during the shunting process or when the shunting locomotive is pulling the wrong vehicle due to reasons such as the falling of equipment installed at the bottom of the shunting vehicle or the shunting locomotive or other unfixed equipment.

[0003] However, the existing hump marshalling yard currently does not have a supporting equipment that can reliably check whether the bottom position (e.g., height) of a shunting vehicle or a shunting locomotive meets the requirements, and prevent the bottom of the shunting vehicle or the shunting locomotive from scratching the ground equipment (e.g., vehicle reducer) located in front (i.e., in front of the vehicle's driving direction), so as to assist in the monitoring and management of the hump marshalling yard. Summary of the invention

[0004] The purpose of the present invention is to provide a clearance inspection device in view of the technical defects existing in the prior art.

[0005] To this end, the present invention provides a clearance inspection device, comprising two inspection units and two main load-bearing plates, as well as a moving contact component, a static contact component and a magnetic switch;

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

[0007] Two inner inspection plates in the two inspection units are located on the inner sides of two base rails which are longitudinally distributed and arranged parallel to each other;

[0008] Two outer inspection plates in two inspection units, located on the outer sides of the two stock rails;

[0009] Among them, two basic rails are fixedly arranged on the top of two transversely distributed main load-bearing plates;

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

[0011] Wherein, the two inner inspection plates and the two outer inspection plates are connected together via a transversely distributed connecting shaft;

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

[0013] Among them, the outer inspection plate on the left is connected with the moving contact component;

[0014] On the left side of the moving contact component, there is a static contact component;

[0015] The static contact component is fixedly connected to a mounting frame;

[0016] A magnetic switch, including a magnetic head and a conductive switch;

[0017] A magnetic head is arranged on the moving contact component;

[0018] The static contact point is formed at a position corresponding to the magnetic head, and a conductive switch is arranged thereon.

[0019] It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides a limit inspection device with scientific design, which can conveniently and reliably check in advance whether the bottom position (such as height) of a shunting vehicle or a shunting locomotive meets the requirements, thereby preventing the bottom of the shunting vehicle or the shunting locomotive from scratching the ground equipment (such as vehicle reducer or other equipment) located in front (i.e., in front of the vehicle's driving direction) when the shunting vehicle or the shunting locomotive continues to move forward, thereby assisting the monitoring and management of the hump marshalling yard, which has great practical significance.

[0020] By applying the limit inspection device of the present invention in the hump marshalling yard, it is possible to detect whether the lower limit of the car body of a shunting locomotive and a shunting freight car (i.e., the lowest position of the lower part of the car body) exceeds the standard limit (the standard limit is, for example, the upper limit of the vehicle reducer relief position specified in the Chinese railway industry standard TB / T2845.1-2019 "Vehicle Reducer Part 1: Clamp-type Reducer"), screen out shunted vehicles or shunting locomotives that exceed the standard limit, and use the magnetic switch provided by the present invention to give a specific switch signal (including a closing signal and an opening signal) to the hump automatic control system (for example, the TW-2 hump automatic control system produced by China Railway Communications Signal Co., Ltd.), thereby assisting the monitoring and management of the hump marshalling yard, and is beneficial to protecting the vehicle reducers and other equipment used in the hump marshalling yard.

[0021] It should be noted that for the existing hump automatic control system (such as the TW-2 hump automatic control system produced by China Railway Signal & Communication Co., Ltd.), when the hump automatic control system receives a closing signal, the hump automatic control system does not alarm and performs normal shunting operations. When the hump automatic control system receives a disconnection signal, the hump automatic control system gives an alarm. At this time, the on-site operators suspend pushing and shunting vehicles. The control room management personnel cooperate with the on-site operators to check and confirm whether the over-limited vehicles (i.e., vehicles whose lower limits exceed the standard limits) will cause serious damage and affect the safety of shunting. If there is no impact, the on-site operators will cancel the alarm and shun normally. If there is an impact, the on-site operators will feedback to the control system management personnel and coordinate the shunting locomotive to pull the over-limited vehicles out from the siding. After pulling them out, the on-site operators will cancel the alarm and resume the shunting of the vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1a A schematic diagram of the structure of the installation state of a clearance inspection device provided by the present invention; the basic rail in the figure only shows a section that cooperates with the device of the present invention, which is only a part of the basic rail;

[0023] Figure 1b for Figure 1a An enlarged schematic diagram of the left part of the area;

[0024] Figure 1c for Figure 1a An enlarged schematic diagram of a middle part of the area;

[0025] Figure 1d for Figure 1a An enlarged schematic diagram of the right part of the area;

[0026] Figure 2 A schematic diagram of a three-dimensional structure of an outer inspection plate in a clearance inspection device provided by the present invention

[0027] Figure 3 A schematic diagram of a three-dimensional structure of an inner inspection plate in a clearance inspection device provided by the present invention

[0028] Figure 4 A schematic diagram of the three-dimensional structure of the axis composition in a limit inspection device provided by the present invention.

[0029] Figure 5 The present invention provides a schematic diagram of a three-dimensional structure composed of moving contacts in a limit inspection device.

[0030] Figure 6 A schematic diagram of a three-dimensional structure composed of static contacts in a clearance inspection device provided by the present invention;

[0031] In the figure, 1 is an inner inspection plate, 2 is an outer inspection plate, 3 is a connecting shaft (for example, a steel pipe), 4 is a protective plate, and 5 is a moving contact plate;

[0032] 6—main load-bearing plate (e.g., long angle steel), 7—mounting frame, 8—torsion spring, 9—adjusting screw, 10—spring clip;

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

[0034] 17—spherical bearing with seat, 18—plate head, 19—shaft head, 20—magnetic head;

[0035] 21—slot nut, 22—support plate, 23—mounting plate, 24—magnetic switch, 25—junction box;

[0036] 26—baffle, 27—basic rail. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] See also Figure 1a to Figure 1d , Figures 2 to 6 , the present invention provides a clearance inspection device, comprising: two inspection units and two main load-bearing plates (specifically long angle steels) 6, as well as a moving contact component, a static contact component 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 on the inner side of the two base rails 27 that are longitudinally distributed and arranged parallel to each other (i.e., between the two base rails 27);

[0044] It should be noted that two rows of basic rails arranged in parallel and at intervals (each row of basic rails includes multiple basic rails 27 connected in sequence) are a common structure originally existing on the railway, on which the wheels of the train are used to run; for example, two rows of basic rails 27 placed in parallel are used for running shunting vehicles or shunting locomotives.

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

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

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

[0048] Among them, two main load-bearing plates 6 are respectively connected (connected by bolts) to the front and rear ends of a plurality of (for example, four) longitudinally distributed mounting frames 7;

[0049] Wherein, the two inner inspection plates 1 and the two outer inspection plates 2 are connected together via a transversely distributed connecting shaft 3;

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

[0051] Among them, the outer inspection plate 2 located on the left is connected with the moving contact component;

[0052] On the left side of the moving contact component, there is a static contact component;

[0053] The static contact component is fixedly connected to a mounting frame 7;

[0054] A magnetic switch, comprising a magnetic head 20 and a conductive switch 24 (ie, a magnetic switch);

[0055] The moving contact component is provided with a magnetic head 2;

[0056] The static contact is formed at a position corresponding to the magnetic head 20, and a conductive switch 24 (ie, a magnetic switch) is provided.

[0057] In the present invention, in a specific implementation, two main load-bearing plates 6 are arranged at intervals in the longitudinal direction;

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

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

[0060] It should be noted that the overall shape of the main load-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 invention, 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 invention, specifically, the centers of the two inner inspection plates 1 and the two outer inspection plates 2 are located in the same vertical plane.

[0066] In the present invention, specifically, the shape of the mounting bracket 7 is an inverted "ji" character.

[0067] In the present invention, specifically, refer to Figure 2 、 Figure 3 , at one end close to the adjacent basic rail 27, the tops of the inner inspection plate 1 and the outer inspection plate 2 are both provided with plate heads 18 protruding upward.

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

[0069] It should be noted that for the present invention, the inner inspection plate assembly includes the inner inspection plate 1 and the plate head 18, refer to Figure 2 ; the outer inspection plate assembly includes the outer inspection plate 2 and the plate head 18, refer to Figure 3 .

[0070] In the present invention, specifically, the inner inspection plate 1 is fixedly connected to the connecting shaft 3 through a plurality of (for example, four) first bolts;

[0071] The outer inspection plate 2 is fixedly connected to the connecting shaft 3 through a plurality of (for example, four) second bolts;

[0072] Specifically, 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 back;

[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 slot 103 is provided between the first front clamping plate 101 and the first rear clamping plate 102;

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

[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 both provided with a plurality of (for example, four) first inspection plate through holes 1001 distributed at equal intervals in the transverse direction;

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

[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] The first bolt passes through the first connecting shaft through hole 301 and the first inspection plate through holes 1001 on the first front clamping plate 101 and the first rear clamping plate 102 of the inner inspection plate 1 , and is then threadedly fixedly connected with the first nut.

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

[0081] The second front clamping plate 201 is connected to the top of the second rear clamping plate 202;

[0082] A second inspection plate opening slot 203 is provided between the second front clamping plate 201 and the second rear clamping plate 202;

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

[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 both provided with a plurality of (for example, four) second inspection plate through holes 2001 distributed at equal intervals in the transverse direction;

[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 to back;

[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] 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, and is then threadedly fixedly connected with the second nut.

[0088] In the present invention, for specific implementation, refer to Figure 4 As shown, the left and right ends of the connecting shaft 3 are respectively provided with a shaft head 19;

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

[0090] Each outer spherical seat bearing 17 is arranged in the longitudinal middle of the top surface of a mounting frame 7;

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

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

[0093] In the present invention, the specific implementation is as follows: Figure 5 , a moving contact is composed of a moving contact plate 5;

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

[0095] On the left side of the movable contact plate 5, a magnetic head 20 of a magnetic switch is provided.

[0096] In specific implementation, a slot nut 21 is welded to the left side of the moving contact plate 5;

[0097] The slot nut 21 is connected to the magnetic head 20 by threads.

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

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

[0100] It should be noted that, for the present invention, the moving contact assembly may include a moving contact plate 5 and a slot nut 21, and a magnetic head 20 of a magnetic switch is mounted on the moving contact plate 5 of the moving contact assembly, see Figure 5 .

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

[0102] On the left side of the moving contact plate 5, a protective plate 4 in the static contact component is provided;

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

[0104] Further, the protection plate 4 is arranged on the left side of the mounting plate 23;

[0105] The mounting plate 23 is disposed on the upper end of the supporting plate 22;

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

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

[0108] It should be noted that, for the present invention, the static contact composition 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 Figure 6 A conductive switch 24 (ie, a magnetic switch) of a magnetic switch is mounted on the protection plate 4 composed of static contacts.

[0109] It should be noted that the magnetic switch is a contactless magnetic switch, which includes 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., a magnetic switch), the magnetic flux sensed by the conductive switch (i.e., a magnetic switch) changes, thereby causing the conductive switch (i.e., a magnetic switch) to operate: when the magnetic head 20 approaches the conductive switch 24 (i.e., a magnetic switch), the conductive switch 24 is turned on; conversely, when the magnetic head 20 moves away from the conductive switch 24 (i.e., a magnetic switch), the conductive switch 24 is turned off. The magnetic switch is generally used to detect and control changes in the magnetic field in the circuit, and is an important industrial automation control element. In the present invention, in a specific implementation, the conductive switch is turned on or off mainly by changing the size of the magnetic flux around the conductive switch 24.

[0110] It should be noted that two wires lead out from the conductive switch 24 (i.e., the magnetic switch) are connected to the two terminals of the terminal block of the junction box 25 (the junction box 25 plays a role in signal transmission), and two wires lead out from the monitoring module on the hump automatic control system are respectively connected to the two terminals connected to the two wires lead out from the conductive switch 24 (i.e., the magnetic switch), thereby transmitting the switch signal to the monitoring module on the hump automatic control system, and then the hump automatic control system determines whether to give an alarm.

[0111] It should be noted that the magnetic switch is a conventional electrical component with mature existing technology and is an existing finished electrical component. For example, the magnetic switch produced by Tianjin Railway Signal Co., Ltd. can be used.

[0112] In the present invention, in a specific implementation, 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 portion 1101 and a curved portion 1102;

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

[0115] The bent portion 1102 of the fixed block 11 is fixedly connected to the stock rail 27 via a fourth bolt;

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

[0117] It should be noted that the shape of the curved portion of the fixing block 11 corresponds to and matches the shapes of the left and right side surfaces of the base rail 27 , and the curved portion is in an arc shape.

[0118] In specific implementation, the bent portion 1102 of the fixing block 11 is provided with a first fixing block through hole which runs transversely therethrough;

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

[0120] The fourth bolt passes through the first fixing block through hole and the base rail through hole at corresponding positions in sequence, and is threadedly fixedly connected with the fourth nut.

[0121] In a specific implementation, the horizontal portion 1101 of the fixing block 11 is vertically penetrated by two second fixing block through holes;

[0122] The two second fixing block through holes are spaced apart in the transverse direction;

[0123] 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;

[0124] After the fifth bolt passes through the corresponding through hole of the second fixing block and the through hole of the main bearing plate, it is threadedly fixedly connected with 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 sequentially arranged from top to bottom;

[0126] It should be noted that a circular insulating tube is provided in the through hole of the main bearing plate. The insulating tube is in a circular ring shape and is placed in the through hole of the main bearing plate 6 for passing the fifth bolt (i.e., the through hole of the main bearing plate). An insulating plate is placed on the main bearing plate 6 and an insulating pad is placed below to achieve insulation between the main bearing plate 6 and the basic rail 27, thereby achieving insulation between the two columns of basic rails.

[0127] In the present invention, in a specific implementation, the connecting shaft 3 is provided 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 to the adjacent inner inspection plate 1, and the other end of the two torsion springs 8 is connected to a mounting bracket 7 respectively;

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

[0129] A spring clip 10 is provided (specifically welded) at the rear left end of the two inner inspection plates 1;

[0130] The two ends of each torsion spring 8 are respectively connected to a spring clip 10 on the adjacent inner inspection plate 1 and an adjustment bolt 9 arranged on the top of an adjacent mounting frame 7 .

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

[0132] Further, the spring clip 10 is in a U-shape;

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

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

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

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

[0137] Furthermore, the torsion directions of the two torsion springs 8 connected to each inner inspection plate 1 are opposite.

[0138] That is, the two torsion springs 8 are a positive torsion spring and a negative torsion spring, respectively.

[0139] It should be noted that the adjusting bolt 9 is mounted on the mounting frame 7 through a common nut.

[0140] In the present invention, in a specific implementation, components such as the inner inspection plate 1, the outer inspection plate 2, the main load-bearing plate 6, the mounting frame 7, etc. are processed and welded from steel materials of Q235B or above.

[0141] In the present invention, in terms of specific implementation, 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 complies with the height requirements of the upper limit of the vehicle reducer relief position specified in the Chinese railway industry standard TB / T2845.1-2019 "Vehicle Reducer Part 1: Clamp-type Reducer", that is, the height of the top position of the inspection plate assembly and the outer inspection plate assembly is equal to the height of the standard limit (i.e. the upper limit of the vehicle reducer relief position).

[0142] The height of the highest position of the inner inspection plate component and the outer inspection plate component is the same, that is, the top surface height of the board head 18 on the inner inspection plate 1 is the same as the top surface height of the board head 18 on the outer inspection plate 2.

[0143] It should be noted that the vehicle reducer is located in the front position when the shunting vehicle or the shunting locomotive continues to move forward, that is, the vehicle reducer is located at the lower part of the basic rail (that is, the railway track) in front of the basic rail position where the clearance inspection device of the present invention is currently installed. Specifically, the brake rail (or brake beam) on the vehicle reducer installed on the ground is located next to the basic rail in front, and the brake rail (or brake beam) is used to perform friction and clamping braking on the wheels on the basic rail.

[0144] In order to more clearly understand the technical solution of the present invention, the working principle of the present invention is explained below.

[0145] For the limit inspection device provided by the present invention, when it is not in action (i.e., when no external force is applied), the inner inspection plate 1 and the outer inspection plate 2 are in a state perpendicular to the basic rail 27. At this time, the centers of the magnetic head 20 in the moving contact component and the conductive switch (i.e., magnetic switch) 24 in the static contact component coincide with each other, and the conductive switch (i.e., magnetic switch) 24 is turned on, inputting a closing signal to the hump automatic control system located outside. At this time, the hump automatic control system has no alarm and releases the vehicle normally.

[0146] When an over-limit vehicle (i.e. a vehicle whose lower limit of the vehicle body exceeds the upper limit of the vehicle reducer) passes, the bottom of the over-limit vehicle will hit the inner inspection plate assembly or the outer inspection plate assembly, driving the shaft assembly (including the connecting shaft 3 and the shaft head 19) and the moving contact assembly to rotate around the bearing hole center of the outer spherical seat bearing 17, so that the magnetic head 20 in the moving contact assembly deviates from the conductive switch (i.e. magnetic switch) 24, and the conductive switch (i.e. magnetic switch) is disconnected, inputting a disconnect signal to the hump automatic control system located outside, and the hump automatic control system gives an alarm after receiving the disconnect command.

[0147] 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 their initial vertical position driven by the torsion springs. The centers of the magnetic head 20 in the moving contact assembly and the conductive switch (i.e., magnetic switch) 24 in the static contact assembly overlap again, and the magnetic switch is reconnected, and a closing signal is re-input into the hump automatic control system located outside. At this time, the hump automatic control system is still in an alarm state. The alarm will be lifted after the on-site personnel have eliminated the problem and confirmed that there is no risk, and the vehicle will be released normally.

[0148] In summary, the clearance inspection device provided by the present invention has a reasonable structure, is convenient and reliable, and can effectively inspect over-limit vehicles and shunting locomotives.

[0149] Compared with the prior art, the clearance inspection device provided by the present invention has the following beneficial effects:

[0150] 1. The clearance inspection device of the present invention processes the dimensions of the inner inspection plate component and the outer inspection plate component according to the clearance dimensions (for example, the upper clearance of the vehicle reducer relief position specified in the China Railway Industry Standard TB / T2845.1-2019 "Vehicle Reducer Part 1: Clamp-type Reducer"), and realizes reset after deflection through a torsion spring, with reasonable structure, convenient installation and long service life;

[0151] It should be noted that in the initial state (that is, 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 (for example, the upper limit of the vehicle reducer relief position specified in the China Railway Industry Standard TB / T2845.1-2019 "Vehicle Reducer Part 1: Clamp-type Reducer").

[0152] 2. The clearance inspection device of the present invention uses an outer spherical seat bearing as a slewing support, which is flexible in rotation and has no jamming;

[0153] 3. In the clearance inspection device of the present invention, the moving contact component and the static contact component use a contactless magnetic switch (including a magnetic head and a conductive switch 24 as a magnetic switch) as a switch contact, which requires less maintenance and increases the service life.

[0154] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A clearance inspection device, characterized in that: It includes two inspection units, two main load-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 load-bearing plates (6) that are transversely distributed; Among them, the two main load-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); On the moving contact assembly, a magnetic head (2) is arranged; On the static contact assembly, at a position corresponding to the magnetic head (20), a conductive switch (24) is arranged.

2. The clearance inspection device according to claim 1, characterized in that: The two main load-bearing plates (6) are longitudinally spaced apart; Between the two main load-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 centers of the two inner inspection plates (1) and the two outer inspection plates (2) are located in the same vertical plane; and / or, The shape of the mounting bracket (7) is an inverted "ji" character.

3. The clearance inspection device according to claim 1, characterized in that: 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 protruding upwardly arranged; 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 clearance inspection device according to claim 3, characterized in that: 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 equally spaced 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 passes through the first connecting shaft through hole (301) and the first inspection plate through holes (1001) on the first front clamping plate (101) and the first rear clamping plate (102) of the inner inspection plate (1), and is then threadedly fixedly connected with the first nut; and / or, An outer inspection plate (2), comprising a second front clamping plate (201) and a second rear clamping plate (202) symmetrically distributed front and back; The second front clamping plate (201) and the second rear clamping plate (202) are connected at their tops; A second inspection plate opening slot (203) is provided between the second front clamping plate (201) and the second rear clamping plate (202); The connecting shaft (3) passes through the second inspection plate opening slot (203) transversely; The lower ends of the second front clamping plate (201) and the second rear clamping plate (202) of the outer inspection plate (2) are both provided with a plurality of second inspection plate through holes (2001) distributed at equal intervals in the transverse direction; 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 to 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); 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 fixedly connected with the second nut.

5. The clearance inspection device according to claim 1, characterized in that: The left and right ends of the connecting shaft (3) are respectively provided with a shaft head (19); Each shaft head (19) is connected to the inner ring of an outer spherical seat bearing (17); Each outer spherical seat bearing (17) is arranged at the longitudinal middle of the top surface of a mounting frame (7).

6. The clearance inspection device according to claim 1, characterized in that: The moving contact component comprises a moving contact plate (5); The left side of the outer inspection plate (2) on the left side is fixedly connected to the moving contact plate (5) in the moving contact assembly; A magnetic head (20) of a magnetic switch is arranged on the left side of the moving contact plate (5); The static contact comprises a protective plate (4); On the left side of the moving contact plate (5), a protective plate (4) in the static contact component is arranged; The protective plate (4) is provided with a conductive switch (24) at a position corresponding to the magnetic head (20); The protection plate (4) is arranged on the left side of the mounting plate (23); The mounting plate (23) is arranged on the upper end of the supporting plate (22); The lower end of the support plate (22) is fixedly connected to a mounting frame (7).

7. The clearance inspection device according to claim 1, characterized in that: A fixing block (11) is provided on the top of the main load-bearing plate (6); The fixing block (11) comprises a horizontal portion (1101) and a curved portion (1102); The lower end of the curved portion (1102) is connected to the top of one end of the horizontal portion (1101) facing the base rail (27); The bent portion (1102) of the fixed block (11) is fixedly connected to the base rail (27) via a fourth bolt; The horizontal portion (1101) of the fixed block (11) is fixedly connected to the main bearing plate (6) via two fifth bolts.

8. The clearance inspection device according to claim 7, characterized in that: The bent portion (1102) of the fixing block (11) is provided with a first fixing block through hole which penetrates transversely; The basic rail (27) is provided with a basic rail through hole which penetrates transversely at a position corresponding to the through hole of the first fixing block; The fourth bolt passes through the corresponding through hole of the first fixing block and the through hole of the base rail in sequence, and is threadedly fixedly connected with the fourth nut; and / or, The horizontal portion (1101) of the fixing block (11) is vertically penetrated by two second fixing block through holes; The two second fixing block through holes are spaced apart in the transverse direction; 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; After the fifth bolt passes through the corresponding through hole of the second fixing block and the through hole of the main bearing plate, it is threadedly fixedly connected with the fifth nut.

9. The clearance inspection device according to any one of claims 1 to 8, characterized in that: The connecting shaft (3) is provided 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 to the adjacent inner inspection plate (1), and the other end of the two torsion springs (8) is respectively connected to a mounting frame (7).

10. The clearance inspection device according to claim 9, characterized in that: A spring clip (10) is provided at the front right end of each of the two inner inspection plates (1); A spring clip (10) is provided at the rear left end of each of the two inner inspection plates (1); The two ends of each torsion spring (8) are respectively connected to a spring clip (10) on an adjacent inner inspection plate (1) and an adjustment bolt (9) arranged on the top of an adjacent mounting frame (7); and / or, The two torsion springs (8) connected to each inner inspection plate (1) are rotationally symmetrically distributed; and / or, The torsion directions of the two torsion springs (8) connected to each inner inspection plate (1) are opposite.

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