Contact type rail transit clearance detection device

Abstract

A contact type rail transit clearance detection device comprises a clearance detection device body, and the clearance detection device body comprises an integrated mounting base, a main body fixing support, a movable support, a plurality of detection plate frameworks and a plurality of detection plates. The movable support comprises an inner side support and an outer side support connected to the outer side of the inner side support through an adjusting assembly. The main body fixing support is installed on the integrated installation base, and the inner side support inner face of the movable support is installed on the main body fixing support through an adjusting assembly. The adjusting assembly comprises a hand wheel screw rod and a slideway; each detection plate is mounted on the detection plate framework through a bidirectional spring hinge, and each detection plate framework is connected to the periphery of the outer side bracket to form a limiting frame; and the locking piece is used for locking the position of the limiting frame. The gauge detection device body is foldable, does not intrude into the gauge at all, and is high in safety coefficient and convenient to operate, and the gauge frame can be folded and unfolded horizontally and vertically.

Description

Technical Field

[0001] The utility model belongs to the field of railway clearance detection, and specifically relates to a contact type rail transit clearance detection device. Background Art

[0002] The construction limit of urban rail transit is an extreme cross-sectional profile perpendicular to the centerline of the line. Within this profile, except for equipment that interacts with locomotives and vehicles, other equipment or buildings are not allowed to intrude, and locomotives are not allowed to intrude. Whether the limit state of the line meets the standards is a prerequisite for the safe operation of trains. The quality of the limit inspection is of great significance to ensure the smooth implementation of joint commissioning and testing and to ensure driving safety during the test.

[0003] Traditional clearance detection is mainly carried out by combining clearance detection vehicle measurement and manual fixed-point measurement. Among them, the frame on the clearance detection vehicle must be made according to different clearance standard sections. Most of the existing contact rail transit clearance detection devices currently have non-adjustable clearance contours. Even if a few are adjustable, they can only be extended and retracted in a single horizontal direction, and cannot achieve the adjustment function in both the horizontal and vertical directions. Therefore, when passing through horizontal or vertical curves, the detection error is large and there is a risk of missed detection. Secondly, when the clearance frame is driving to the detection section, since the expansion state of the clearance frame is much larger than the static limit, there is a possibility of colliding with platform equipment, screen doors, line equipment and other devices. Laser scanning technology is also used in clearance detection. Although this measurement method has high detection accuracy, the entire set of detection devices has many components, complex operation, and high cost. In addition, when performing clearance detection outdoors on urban viaducts, it is easy to cause misoperation and poor adaptability due to the influence of factors such as light and air floating objects. Summary of the invention

[0004] The utility model aims to avoid the limit frame from colliding with the line equipment due to the limit frame exceeding the limit, the difficulty in measuring the limit widening amount of the horizontal and vertical curve sections, and the low continuity and adaptability of the detection device, and to provide a contact type rail transit limit detection device, the limit frame is foldable, does not invade the limit at all, has a high safety factor and is easy to operate.

[0005] The technical solution of the utility model is:

[0006] A contact rail transit clearance detection device, comprising a clearance detection device body, the clearance detection device body comprising an integrated mounting base, a main body fixed bracket, a movable bracket, a plurality of detection plate frames, and a plurality of detection plates; the movable bracket comprises an inner bracket, and an outer bracket connected to the outside of the inner bracket via an adjustment component; the main body fixed bracket is mounted on the integrated fixed base, and the inner surface of the inner bracket of the movable bracket is mounted on the main body fixed bracket via an adjustment component; the adjustment component comprises a hand wheel screw and a slideway; each detection plate is mounted on the detection plate frame via a bidirectional spring hinge, and each detection plate frame is linked to the periphery of the outer bracket to form a movable clearance frame; and also comprises a lock for locking the position of the movable clearance frame;

[0007] When working, the detection plate swings back and forth with the two-way spring hinge as the fulcrum and can reset automatically; when the detection plate frame is flipped along the outer bracket until the limit frame is in the retracted state, the limit detection device body is completely smaller than the static limit of the vehicle, and there is no risk of overlimit when there is no operation; when the detection plate frame is flipped along the outer bracket until the limit frame is in the extended state, the lock locks the limit frame position.

[0008] The inner bracket is a vertical movable bracket, and the outer bracket is a horizontal movable bracket; the handwheel screw includes a vertical handwheel screw and a horizontal handwheel screw, and the slideway includes a vertical slideway and a horizontal slideway; the main fixed bracket is equipped with a vertical scale and a horizontal scale;

[0009] The vertical movable bracket is installed on the main fixed bracket, the horizontal movable bracket is installed on the vertical movable bracket, the detection plate frame is installed on the horizontal movable bracket, and the detection plate is installed on the detection plate frame, and the two are connected by a two-way spring hinge; the vertical movable bracket is connected to the main fixed bracket through a vertical handwheel screw and a vertical slide; the horizontal movable bracket is connected to the vertical movable bracket through a horizontal handwheel screw and a horizontal slide; during adjustment: by shaking the vertical handwheel screw, the vertical movable bracket is moved up and down relative to the main fixed bracket, and the vertical scale is observed to control the movement amount, which is used to compensate for the amount that the limit will widen outward when the vehicle passes through the vertical curve, so as to ensure the accuracy of the measurement; the detection plate frame includes side detection plate frames located on the left and right sides and a top detection plate frame located on the top. When the detection plate frame and the horizontal movable bracket are flipped, the side detection plate frames on the left and right sides are flipped 90°, and the top detection plate frame is flipped 180°. The limit detection device body is completely smaller than the static limit of the vehicle. When there is no operation, there is no risk of overrunning.

[0010] The main body fixing bracket is bolted to the integrated mounting base through a connecting seat, and an adjustment pad is added to the bottom of the connecting seat to ensure that the limit detection device body is level; the connecting seat is provided with an adjustment through hole for adjusting the coincidence of the limit detection device body with the center of the flat car body, the vertical plate is used to be bolted to the main body fixing bracket, and the bottom plate is used to be bolted to the integrated mounting base; a gasket can be added between the bottom plate and the integrated base to adjust the horizontality of the detection device.

[0011] The main fixed bracket and the movable bracket are made of metal hollow square steel. A slideway is arranged on the main fixed bracket and a slider is arranged on the movable bracket, and the slider is stuck in the slideway. By rotating the handwheel screw, the relative position of the movable bracket and the fixed main bracket and the relative position between the movable brackets are adjusted to meet the limited vertical / horizontal widening amount of the curved section.

[0012] The detection board frame is linked to the main body fixing bracket by a pin shaft, and two lock buckles in different directions are installed on the main body fixing bracket. The two lock buckles in different directions are used to lock the detection board frame in two different working conditions: retracting and unfolding. A locking ring is installed at the corresponding position of the detection board frame. The detection board frame rotates along the pin shaft to realize the unfolding and retracting operation, and is locked by the lock buckle and the lock ring. The lock buckle and the lock ring constitute a locking piece.

[0013] The detection plate is made of a punched porous aluminum plate.

[0014] The detection plate and the detection plate frame are connected by double-spring hinges in the following manner: a U-shaped through hole is arranged at the edge of the detection plate, and the metal bottom plate provided with the through hole is connected by bolts.

[0015] The sensor is installed between the detection board and the detection board frame. The sensor transmits the signal to the electric control cabinet, and the battery provides power to the electric control cabinet and the sensor.

[0016] The sensor is used to determine whether the line is out of limit. The specific method is: a sensor is installed between each detection board and the detection board frame, and the detection boards are numbered respectively. When the detection board collides with an obstacle, it flips over, and the sensor transmits the signal to the electric control cabinet. The light on the control cabinet panel corresponding to the detection board lights up, and an audible and visual alarm occurs, which requires the operator to manually reset it.

[0017] The inner bracket of the movable bracket includes a left half inner bracket and a right half inner bracket, and the outer bracket of the movable bracket includes a left half outer bracket and a right half outer bracket. The left half inner bracket and the left half outer bracket constitute a left half movable bracket A, and the right half inner bracket and the right half outer bracket constitute a right half movable bracket B. The left half movable bracket is located on one side of the main fixed bracket, and the right half movable bracket is located on the other side of the main fixed bracket.

[0018] A contact rail transit clearance detection method,

[0019] The contact rail transit clearance detection device is installed at the center of the flat car bogie, which can effectively reduce the impact of the vehicle's offset on the clearance measurement when passing through a curve; the contact rail transit clearance detection device is adjusted to completely coincide with the center of the flat car body;

[0020] When the contact rail transit clearance detection device and the flat car are installed, the detection operation can be started. The detection operation is divided into two stages: running to the section to be detected and implementing the detection construction. During the operation to the section to be detected, turn off the power, the detection board frame is completely turned over, retracted and locked, and the horizontal movable bracket and the vertical movable bracket are both at the 0 point of the scale to ensure that there is no extension; when implementing the detection construction, open the lock, turn the detection board frame back to the unfolded state and re-lock it, and turn on the power and the electric control cabinet;

[0021] If the line is a straight section, the flat car travels at 3-5km / h. If there are objects that intrude into the limit on the line, the detection board will flip along the two-way hinge, thereby triggering the action of the sensor installed on the detection board. The sensor transmits the signal to the electric control cabinet. The display on the electric control cabinet will show which detection board flips, and at the same time trigger the buzzer and warning light to remind the operator. The operator knows the cause of the alarm by checking the information on the display. At this time, the vehicle is controlled to reverse slowly, and the operator keeps an eye on the flipped detection board until the specific line object that collides with the detection board is found, so as to carry out subsequent processing to ensure the safety of the line;

[0022] If the line is a curved section, it is necessary to widen the line according to the specific curve radius and limit. When the line is a horizontal curve, shake the horizontal handwheel screw to make the horizontal movable bracket extend to both sides, and ensure the accuracy of the extension amount according to the scale index; when the line is a vertical curve, shake the vertical handwheel screw to make the vertical movable bracket extend upward, and ensure the accuracy of the extension amount according to the scale index; if the line is a combination of horizontal and vertical curves, shake the horizontal handwheel screw and the vertical handwheel screw synchronously to make the horizontal movable bracket extend to both sides and the vertical movable bracket extend upward, and ensure the accuracy of the extension amount according to the scale index; the subsequent detection workflow is consistent with the straight line segment;

[0023] The contact rail transit clearance detection device comprises a clearance detection device body, which comprises an integrated mounting base, a main body fixed bracket, a movable bracket, a plurality of detection plate frames, and a plurality of detection plates; the movable bracket comprises an inner bracket and an outer bracket connected to the outside of the inner bracket via an adjustment component; the main body fixed bracket is mounted on the integrated fixed base, and the inner surface of the inner bracket of the movable bracket is mounted on the main body fixed bracket via an adjustment component; the adjustment component comprises a hand wheel screw and a slideway; each detection plate is mounted on the detection plate frame via a bidirectional spring hinge, and each detection plate frame is linked to the periphery of the outer bracket to form a movable clearance frame; and also comprises a lock for locking the position of the movable clearance frame;

[0024] When working, the detection plate swings back and forth with the bidirectional spring hinge as the fulcrum and can automatically reset; when the detection plate frame is flipped along the outer bracket until the limit frame is in the retracted state, the limit detection device body is completely smaller than the static limit of the vehicle, and there is no risk of over-limit when there is no operation; when the detection plate frame is flipped along the outer bracket until the limit frame is in the extended state, the lock locks the limit frame position;

[0025] The inner bracket is a vertical movable bracket, and the outer bracket is a horizontal movable bracket; the handwheel screw includes a vertical handwheel screw and a horizontal handwheel screw, and the slideway includes a vertical slideway and a horizontal slideway; the main fixed bracket is equipped with a vertical scale and a horizontal scale;

[0026] The vertical movable bracket is installed on the main fixed bracket, the horizontal movable bracket is installed on the vertical movable bracket, the detection plate frame is installed on the horizontal movable bracket, and the detection plate is installed on the detection plate frame, and the two are connected by a two-way spring hinge; the vertical movable bracket is connected to the main fixed bracket through a vertical handwheel screw and a vertical slide; the horizontal movable bracket is connected to the vertical movable bracket through a horizontal handwheel screw and a horizontal slide; during adjustment: by shaking the vertical handwheel screw, the vertical movable bracket moves up and down relative to the main fixed bracket, and observing the vertical scale to control the movement amount, which is used to compensate for the amount that the limit will widen outward when the vehicle passes through the vertical curve, so as to ensure the accuracy of the measurement; the detection plate frame includes side detection plate frames located on the left and right sides and a top detection plate frame located on the top. When the detection plate frame and the horizontal movable bracket are flipped, the side detection plate frames on the left and right sides are flipped 90°, and the top detection plate frame is flipped 180°. The limit detection device body is completely smaller than the static limit of the vehicle. There is no risk of overrunning when there is no operation;

[0027] The sensor is installed between the detection board and the detection board frame. The sensor transmits the signal to the electric control cabinet, and the battery provides power to the electric control cabinet and the sensor.

[0028] The sensor is used to determine whether the line is out of limit. The specific method is: a sensor is installed between each detection board and the detection board frame, and the detection boards are numbered respectively. When the detection board collides with an obstacle, it flips over, and the sensor transmits the signal to the electric control cabinet. The light on the control cabinet panel corresponding to the detection board lights up, and an audible and visual alarm occurs, which requires the operator to manually reset it.

[0029] In order to facilitate disassembly and transportation, and adapt to the inspection work in different working conditions, the main body fixed bracket and the movable bracket are metal hollow square steel, and the main body fixed bracket and the movable bracket are connected in the following way: a longitudinal slide is set on the main body fixed bracket and a slider is set on the movable bracket, and the slider is stuck in the slide. By rotating the lead screw at the bottom of the main body fixed bracket, the relative position of the movable bracket and the fixed main body bracket can be adjusted to meet the limited vertical widening amount of the curve segment.

[0030] The horizontal movable bracket contains a horizontal handwheel screw, which controls the extension and retraction of the detection plate to meet the limited horizontal widening amount of the curve section.

[0031] In order to ensure the horizontality of the detection device and the centering of the vehicle body, the connecting seat is L-shaped, and a U-shaped through hole is provided on the vertical plate to adjust the coincidence of the limit detection device and the center of the flat car body. The vertical plate is used to be bolted to the main fixing bracket, and the bottom plate is used to be bolted to the integrated mounting base. A gasket can be added between the bottom plate and the integrated base to adjust the horizontality of the detection device.

[0032] In order to make specific judgments on the intrusion or outward intrusion limits in different directions, there are multiple detection plates, which are respectively connected to the detection plate frame through double spring hinges.

[0033] In order to ensure that the limit detection device does not invade the limit when it is not operating, the detection plate frame and the main fixed bracket are connected by a pin, and two locks in different directions are installed on the main fixed bracket, and locking rings are installed at the corresponding positions of the detection plate frame. The detection plate frame rotates along the pin to realize the expansion and retraction operations, and is locked by the locks and locking rings.

[0034] In order to avoid interference of wind on the detection plate during the detection process, the detection plate is made of a stamped porous aluminum plate.

[0035] In order to ensure that the detection plate and the detection plate frame are firmly connected and easy to maintain and replace, the detection plate and the detection plate frame are connected by a double-spring hinge: a U-shaped through hole is set on the edge of the detection plate, and the metal base plate with the through hole is bolted.

[0036] The detection device determines whether the line is out of limit based on the sensor. The specific method is: a sensor is installed between each detection board and the detection board frame, and the detection boards are numbered respectively. When the detection board collides with an obstacle, it flips over, and the sensor transmits the signal to the control cabinet (i.e. the electric control cabinet). The light on the control cabinet panel corresponding to the detection board lights up, and an audible and visual alarm occurs, which requires the operator to manually reset it.

[0037] The power supply of the utility model can be provided by a battery or a tractor.

[0038] The limit frame of the utility model is foldable, does not invade the limit at all, has a high safety factor, is easy to operate, can be retracted and extended horizontally and vertically, has high precision and high intelligence. The limit frame can be adjusted in two dimensions, horizontally and vertically, to match the actual limit contour of the line to the maximum extent, and the detection precision and accuracy are greatly improved; on the basis of the traditional contact limit detection method, a vertical curve detection method and a horizontal curve and vertical curve combined line detection method are added, and when the vehicle is not performing detection operations, a new limit frame folding and retracting operation condition is added, which is different from the existing extensive detection operation mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the limit detection structure for detecting intrusion into a straight line segment and intrusion into a curved line segment of a rail transit main line according to the utility model (expanded state);

[0040] Figure 2 for Figure 1 Side view of

[0041] Figure 3 It is a schematic diagram of the track mainline operation structure of the utility model without detection operation (retracted state);

[0042] Figure 4 This is a schematic diagram of the relative positions of the movable bracket and the main body fixed bracket in the utility model;

[0043] Figure 5 for Figure 4 Side view of

[0044] Figure 6 This is a schematic diagram of the appearance structure of the connecting seat of the utility model;

[0045] Figure 7 for Figure 6 Side view of

[0046] Figure 8 This is one of the flipped and retracted states of the utility model;

[0047] Fig. 9 This is the second flip-back retracted state of the utility model;

[0048] Fig.10 This is the unfolded state of the utility model;

[0049] 1 integrated mounting base, 2 main body fixed bracket, 3 vertical movable bracket, 3-1 vertical handwheel screw, 3-2 vertical scale, 3-3 vertical slide, 4 horizontal movable bracket, 4-1 horizontal handwheel screw, 4-2 horizontal scale, 4-3 horizontal slide, 5 detection board frame, 6 rotating shaft, 7 sensor, 8 electric control cabinet, 9 detection board, 10 two-way spring hinge, 11 connecting seat.

[0050] The attached drawings are all structural schematic diagrams, which are only used to introduce the connection relationship and position between the various components of the utility model product, and do not limit the specific dimensions. Figure 1 and Figure 2 They are all symmetrical structures, so only the components on one side are labeled. Because there are multiple components such as double-spring hinges, only representative ones are shown and not all of them are labeled. This will not cause ambiguity or identification errors. DETAILED DESCRIPTION

[0051] The present invention is described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand and implement the technical solution of the present invention.

[0052] like Figure 1-5 As shown, a contact type rail transit clearance detection device includes an integrated mounting base 1, a main body fixing bracket 2, and a connecting seat 11. The main body fixing bracket 2 is bolted to the integrated mounting base 1 through the connecting seat 11, and an adjustment pad can be added at the bottom of the connecting seat 11 to ensure that the entire device is level.

[0053] The vertical movable bracket 3 is connected to the main fixed bracket through the vertical handwheel screw 3-1 and the vertical slide 3-3. By shaking the vertical handwheel screw 3-1, the vertical movable bracket 3 can be moved up and down relative to the main fixed bracket 2, and the vertical scale 3-2 is observed to control the movement amount to compensate for the amount that the limit will widen outward when the vehicle passes through the vertical curve, thereby ensuring the accuracy of the measurement.

[0054] The horizontal movable bracket 4 is connected to the vertical movable bracket 3 through a horizontal handwheel screw 4-1 and a horizontal slide 4-3, so that the horizontal movable bracket 4 can be moved left and right relative to the vertical movable bracket 3, and the horizontal scale 4-2 is observed to control the movement amount to compensate for the amount that the limit will widen outward when the vehicle passes through the horizontal curve, thereby ensuring the accuracy of the measurement.

[0055] The detection board frame 5 is connected to the horizontal movable bracket 4 through a rotating shaft, and a circle is connected to form a "door"-shaped structure. The detection board 9 is connected to the detection board frame 5 through a bidirectional spring hinge to meet the vehicle bidirectional detection requirements. A sensor 7 is installed between the detection board 9 and the detection board frame 5. Multiple detection boards are numbered respectively. When the detection board 9 is overturned by the collision of an over-limit object, the sensor 7 takes effect and transmits the alarm information to the electric control cabinet 8. The signal light of the corresponding detection board in the electric control cabinet lights up, which plays a role in positioning and reminding.

[0056] The two vertical movable brackets 3 are distributed on the front and rear sides of the main fixed bracket 2, and the two vertical movable brackets are respectively controlled by two vertical handwheel screw rods 3-1.

[0057] like Figure 6 , 7 As shown, a "U"-shaped hole (i.e., an adjustment through hole) 111 is opened on the vertical plate of the connecting seat 11, which can adjust the horizontal positioning of the main body fixing bracket 2 to ensure that the main body fixing bracket 2 coincides with the center of the flat car body.

[0058] like Figure 3 As shown, the detection plate frame 5 and the horizontal movable bracket 4 are flipped, the left and right detection plate frames 5 are flipped 90°, and the top detection plate frame 5 is flipped 180°. The entire rail transit limit detection device can be completely smaller than the static limit of the vehicle. When there is no operation, there is no risk of overlimit.

[0059] like Figure 8-10 As shown, the inner bracket of the movable bracket includes a left half inner bracket and a right half inner bracket, and the outer bracket of the movable bracket includes a left half outer bracket and a right half outer bracket. The left half inner bracket and the left half outer bracket constitute a left half movable bracket A, and the right half inner bracket and the right half outer bracket constitute a right half movable bracket B. The left half movable bracket is located in front of the main fixed bracket 2, and the right half movable bracket is located behind the main fixed bracket 2.

[0060] The detection method is:

[0061] The contact rail transit clearance detection device is installed at the center of the flat car bogie, which can effectively reduce the impact of the vehicle's offset on the clearance measurement when passing through a curve; the contact rail transit clearance detection device is adjusted to completely coincide with the center of the flat car body;

[0062] When the contact rail transit clearance detection device and the flat car are installed, the detection operation can be started. The detection operation is divided into two stages: running to the section to be detected and implementing the detection construction. During the operation to the section to be detected, the power is turned off, the detection board frame is completely turned over and retracted and locked, and the horizontal movable bracket and the vertical movable bracket are both at the 0 point of the scale to ensure that there is no extension; when implementing the detection construction, open the lock, turn the detection board frame back to the unfolded state and re-lock it, and turn on the power and the electric control cabinet 8;

[0063] If the line is a straight section, the flat car travels at 3-5km / h. If there are objects that intrude into the limit on the line, the detection board will flip along the two-way hinge, thereby triggering the action of the sensor installed on the detection board. The sensor transmits the signal to the electric control cabinet. The display on the electric control cabinet will show which detection board flips, and at the same time trigger the buzzer and warning light to remind the operator. The operator knows the cause of the alarm by checking the information on the display. At this time, the vehicle is controlled to reverse slowly, and the operator keeps an eye on the flipped detection board until the specific line object that collides with the detection board is found, so as to carry out subsequent processing to ensure the safety of the line;

[0064] If the line is a curved section, it is necessary to widen the line according to the specific curve radius and limit. When the line is a horizontal curve, shake the horizontal handwheel screw to make the horizontal movable bracket extend to both sides, and ensure the accuracy of the extension amount according to the scale index; when the line is a vertical curve, shake the vertical handwheel screw to make the vertical movable bracket extend upward, and ensure the accuracy of the extension amount according to the scale index; if the line is a combination of horizontal and vertical curves, shake the horizontal handwheel screw and the vertical handwheel screw synchronously to make the horizontal movable bracket extend to both sides and the vertical movable bracket extend upward, and ensure the accuracy of the extension amount according to the scale index; the subsequent detection workflow is consistent with the straight segment.

[0065] Through the above two embodiments, it can be concluded that the utility model can effectively avoid the disadvantage of over-limit collision with line equipment when the limit frame is not in working condition when working outdoors, and at the same time can ensure accuracy, especially the limit measurement of various horizontal and vertical curved sections, and it is easy to operate, has a good warning effect, and ensures detection continuity.

Claims

1. A contact type rail transit clearance detection device, characterized in that: The invention comprises a limit detection device body, wherein the limit detection device body comprises an integrated mounting base (1), a main body fixed bracket (2), a movable bracket, a plurality of detection plate frames (5), and a plurality of detection plates (9); the movable bracket comprises an inner bracket and an outer bracket connected to the outside of the inner bracket via an adjustment component; the main body fixed bracket (2) is mounted on the integrated mounting base (1), and the inner surface of the inner bracket of the movable bracket is mounted on the main body fixed bracket (2) via an adjustment component; the adjustment component comprises a hand wheel screw and a slideway; each detection plate (9) is mounted on the detection plate frame (5) via a bidirectional spring hinge (10), and each detection plate frame (5) is linked to the periphery of the outer bracket to form a movable limit frame; and a lock for locking the position of the movable limit frame is also included; When working, the detection plate (9) swings back and forth with the bidirectional spring hinge (10) as a fulcrum and can automatically reset; when the detection plate frame (5) is flipped along the outer bracket until the limit frame is in a retracted state, the limit detection device body is completely smaller than the static limit of the vehicle, and there is no risk of over-limit when there is no operation; when the detection plate frame (5) is flipped along the outer bracket until the limit frame is in an extended state, the lock piece locks the limit frame position.

2. The contact type rail transit clearance detection device according to claim 1, characterized in that: The inner bracket is a vertical movable bracket (3), and the outer bracket is a horizontal movable bracket (4); the handwheel screw comprises a vertical handwheel screw (3-1) and a horizontal handwheel screw (4-1), and the slideway comprises a vertical slideway (3-3) and a horizontal slideway (4-3); and the main fixed bracket (2) is provided with a vertical scale (3-2) and a horizontal scale (4-2); The vertical movable bracket (3) is mounted on the main fixed bracket (2), the horizontal movable bracket (4) is mounted on the vertical movable bracket (3), the detection plate frame (5) is mounted on the horizontal movable bracket (4), and the detection plate (9) is mounted on the detection plate frame (5), and the two are connected by a bidirectional spring hinge (10); the vertical movable bracket (3) is connected to the main fixed bracket (2) through a vertical handwheel screw (3-1) and a vertical slideway (3-3); the horizontal movable bracket (4) is connected to the vertical movable bracket (3) through a horizontal handwheel screw (4-1) and a horizontal slideway (4-3); when adjusting: by shaking The vertical hand wheel screw (3-1) is moved to make the vertical movable bracket (3) move up and down relative to the main fixed bracket (2), and the vertical scale (3-2) is observed to control the movement amount, so as to compensate for the amount by which the limit will widen outward when the vehicle passes through the vertical curve, thereby ensuring the accuracy of the measurement; the detection plate frame (5) includes side detection plate frames located on the left and right sides and a top detection plate frame located on the top, and when the detection plate frame (5) and the horizontal movable bracket (4) are flipped, the side detection plate frames on the left and right sides are flipped 90 degrees, and the top detection plate frame is flipped 180 degrees, the limit detection device body is completely smaller than the static limit of the vehicle, and there is no risk of overrunning when there is no operation.

3. The contact type rail transit clearance detection device according to claim 1, characterized in that: The main body fixing bracket (2) is bolted to the integrated mounting base (1) via a connecting seat (11), and an adjustment pad is added to the bottom of the connecting seat (11) to ensure that the limit detection device body is level; the connecting seat (11) is provided with an adjustment through hole for adjusting the coincidence of the limit detection device body with the center of the flat car body; the vertical plate is used to be bolted to the main body fixing bracket, and the bottom plate is used to be bolted to the integrated mounting base; a gasket can be added between the bottom plate and the integrated base to adjust the levelness of the detection device.

4. A contact type rail transit clearance detection device according to claim 1, characterized in that: The main fixed bracket (2) and the movable bracket are made of metal hollow square steel. A slideway is provided on the main fixed bracket (2) and a slider is provided on the movable bracket, and the slider is stuck in the slideway. By rotating the hand wheel screw, the relative position of the movable bracket and the fixed main bracket and the relative position between the movable brackets are adjusted to meet the limited vertical / horizontal widening amount of the curved section.

5. A contact type rail transit clearance detection device according to claim 1, characterized in that: The detection plate frame (5) is connected to the main body fixing bracket (2) via a pin shaft (6), and two lock buckles in different directions are installed on the main body fixing bracket. A locking ring is installed at the corresponding position of the detection plate frame (5). The detection plate frame (5) rotates along the pin shaft to realize the expansion and retraction operation, and is locked by the lock buckle and the locking ring. The lock buckle and the locking ring constitute a locking element.

6. A contact type rail transit clearance detection device according to claim 1, characterized in that: The detection plate (9) is made of a stamped porous aluminum plate.

7. A contact type rail transit clearance detection device according to claim 1, characterized in that: The detection plate (9) and the detection plate frame (5) are connected via a double-spring hinge in the following manner: a U-shaped through hole is provided at the edge of the detection plate, and the metal bottom plate provided with the through hole is connected via bolts.

8. A contact type rail transit clearance detection device according to claim 1, characterized in that: The sensor (7) is installed between the detection plate (9) and the detection plate frame (5), and the sensor (7) transmits a signal to the electric control cabinet (8), and the storage battery provides power to the electric control cabinet (8) and the sensor (7); The sensor is used to determine whether the line is over-limited. Specifically, a sensor is installed between each detection board and the detection board frame, and the detection boards are numbered respectively. When the detection board collides with an obstacle, it flips over. The sensor transmits a signal to the electric control cabinet (8), and the light on the control cabinet panel corresponding to the detection board lights up, and an audible and visual alarm is generated, requiring the operator to manually reset it.

9. A contact type rail transit clearance detection device according to claim 1, characterized in that: The inner bracket of the movable bracket includes a left inner bracket and a right inner bracket, and the outer bracket of the movable bracket includes a left outer bracket and a right outer bracket. The left inner bracket and the left outer bracket form a left movable bracket A, and the right inner bracket and the right outer bracket form a right movable bracket B. The left movable bracket is located on one side of the main fixed bracket (2), and the right movable bracket is located on the other side of the main fixed bracket (2).

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