Subway track settlement detection device

Abstract

The application relates to a subway track settlement detection device and relates to the technical field of track traffic detection, which comprises a base, a support, a fixed shaft and a sliding shaft, the support is installed on the base, the fixed shaft is horizontally installed on the support, the fixed shaft is internally hollow and is provided with an open end at one end, and the sliding shaft is coaxially and slidingly arranged in the fixed shaft; a vertical fitting rod is vertically arranged at the end of the sliding shaft away from the fixed shaft, the vertical fitting rod is internally hollow and is provided with an open end at the lower end, the lower end surface of the vertical fitting rod is flush with the surface of the base, a steel rail fitting mechanism and a columnar measuring scale are arranged on the vertical fitting rod, and the columnar measuring scale is slidingly arranged in the vertical fitting rod; when the vertical fitting rod moves horizontally and the steel rail fitting mechanism abuts against the side wall of the steel rail, the columnar measuring scale automatically slides out of the vertical fitting rod and is fitted on the upper surface of the sleeper. The application has the effects of improving the instantaneity and efficiency when the position of the subway track settlement is detected.

Description

Technical Field

[0001] This application relates to the field of rail transit inspection technology, and in particular to a subway track settlement detection device. Background Technology

[0002] Currently, with the urbanization process in my country, major cities are vigorously constructing subways. However, the characteristics of modern subways, such as the large number of tunnels and their relatively dense layout, as well as the large weight, high speed, and high frequency of trains, can easily lead to adverse effects such as displacement, deformation, and even collapse of the soil layers on which the subway is located.

[0003] Subway track settlement is a critical issue affecting the quality and safety of train operations. As a strip-shaped structure, subway lines traverse complex geological conditions, especially in sections with unfavorable geological conditions, where there is a risk of settlement. Therefore, it is necessary to inspect the settled portions of the subway tracks.

[0004] Regarding the aforementioned technologies, the inventors believe that currently, when inspecting the settlement of subway tracks, inspectors need to approach the settlement area of ​​the subway track for inspection. Since the inspection requires fixed-point inspection and takes a long time, the subway must be shut down or the inspection must be carried out at night when the subway is not running. However, this will greatly reduce the inspection efficiency, and real-time inspection cannot be carried out during subway operation. Summary of the Invention

[0005] To improve the immediacy and efficiency of detecting the location of subway track settlement, this application provides a subway track settlement detection device.

[0006] The subway track settlement detection device provided in this application adopts the following technical solution:

[0007] A subway track settlement detection device includes a base, a support, a fixed shaft, and a sliding shaft. The support is mounted on the base, and the fixed shaft is horizontally mounted on the support. The fixed shaft is hollow inside and open at one end. The sliding shaft is slidably mounted coaxially inside the fixed shaft. A vertically mounted vertical fitting rod is installed at the end of the sliding shaft away from the fixed shaft. The vertical fitting rod is hollow inside and open at its lower end. The lower end face of the vertical fitting rod is flush with the surface of the base. A rail fitting mechanism and a columnar measuring ruler are installed on the vertical fitting rod. The columnar measuring ruler is slidably mounted inside the vertical fitting rod. When the vertical fitting rod moves horizontally so that the rail fitting mechanism abuts against the side wall of the rail, the columnar measuring ruler automatically slides out from the vertical fitting rod and fits against the upper surface of the sleeper.

[0008] By adopting the above technical solution, when conducting settlement detection on subway tracks, the base is first placed on the settlement reference seat on the subway track. Then, the sliding shaft slides out from the fixed shaft and moves closer to the track side, causing the vertical fitting rod to gradually approach the rail of the subway track. When the vertical fitting rod is about to approach the side wall of the rail, the rail fitting mechanism will pre-fit onto the side wall of the rail, thereby driving the cylindrical measuring ruler to automatically fall vertically from the vertical fitting rod, allowing the lower end of the cylindrical measuring ruler to directly abut against the sleeper. Since the settlement reference seat is installed by default flush with the sleeper of the subway track, Furthermore, the lower end of the vertical fitting rod is flush with the upper surface of the base; therefore, the length of the cylindrical measuring ruler moved out from the vertical fitting rod minus the original thickness of the base is the settlement degree at the subway track settlement point; and, during measurement, workers do not need to approach the track, but only need to operate at the settlement reference seat, only allowing the sliding shaft and the vertical fitting rod to be close to the rail, which can achieve the effect of normal measurement during subway operation, and will not hinder the normal operation of the subway, thereby improving the immediacy and efficiency of detecting the location of subway track settlement.

[0009] Optionally, a manual drive mechanism is provided on the fixed shaft, which is used to drive the sliding shaft to move along the length direction of the fixed shaft.

[0010] By adopting the above technical solution, the manual drive mechanism enables testing personnel to effectively control the movement of the sliding shaft.

[0011] Optionally, the manual drive mechanism includes a rotating gear, a rotating shaft, and a rotating handle. The rotating shaft is rotatably mounted on the side wall of the fixed shaft. The rotating gear is coaxially mounted at one end of the rotating shaft located inside the fixed shaft. The rotating handle is mounted at the end of the rotating shaft away from the rotating gear. A rack is provided on the sliding shaft along the length of the sliding shaft, and the rack meshes with the rotating gear.

[0012] By adopting the above technical solution, the testing personnel can directly rotate the handle by hand to make the rotating shaft rotate. The rotation of the rotating shaft will drive the rotating gear to rotate. After the rotating gear rotates, the rack that meshes with it will move, thereby realizing the sliding shaft sliding within the fixed shaft, achieving the effect of driving the sliding shaft to move more conveniently.

[0013] Optionally, the sliding shaft is further provided with a movable support mechanism, which is used to support the sliding shaft when it moves, so as to keep the sliding shaft in a horizontal state.

[0014] By adopting the above technical solution, the movable support mechanism can keep the sliding shaft horizontal as it gradually moves out of the fixed shaft, and the entire device can remain stable as the sliding shaft extends out of the fixed shaft.

[0015] Optionally, the movable support mechanism includes a support rod, a pressing rod, a top plate, a compression spring, and a roller; the support rod is vertically disposed at the lower end of the sliding shaft, the support rod is hollow inside and open at the lower end, the pressing rod is slidably inserted inside the support rod with one end located outside the support rod, and the roller is rotatably disposed at the end of the pressing rod located outside the support rod; the top plate is disposed at the end of the pressing rod located inside the support rod, the end opening of the support rod is provided with an anti-detachment flange to prevent the top plate from detaching from the interior of the support rod, the compression spring is disposed between the top plate and the anti-detachment flange, and the compression spring causes the top plate to always have a tendency to move towards the opening side of the support rod.

[0016] By adopting the above technical solution, when the sliding shaft slides out from the fixed shaft, the compression spring always tends to move towards the opening side of the support rod. Therefore, the compression spring will move the top plate from top to bottom, so that the compression rod also always tends to move outward from the opening of the support rod. This allows the roller to always be in contact with the ground at the subway track. That is, when the ground at the subway track is not stable, the setting of the compression spring can keep the roller in contact with the ground and keep the extension process of the sliding shaft stable.

[0017] Optionally, the base is provided with a receiving groove, the length direction of which is consistent with the sliding direction of the sliding shaft; a slot is provided on the lower end wall of the fixed shaft along the length direction of the fixed shaft, and when the sliding shaft is housed in the fixed shaft, the support rod passes through the slot and extends vertically downward into the receiving groove.

[0018] By adopting the above technical solution, when it is not necessary to extend the sliding shaft, most of the shaft section of the sliding shaft can be stored in the fixed shaft, while the support rod will be located between the slot and the receiving groove, that is, the roller is placed in the receiving groove, so that the sliding shaft can be stored more effectively.

[0019] Optionally, the rail bonding mechanism includes a bonding plate, a transverse sliding rod, a blocking plate, and a spring. The vertical bonding rod has transverse edge grooves on both inner walls near its lower opening, with openings at both ends. The transverse sliding rod is slidably inserted into the edge grooves, with one end extending out of the grooves. The bonding plate is located at the end of the transverse sliding rod outside the edge grooves, and the blocking plate is located at the end of the transverse sliding rod away from the bonding plate. A pressing groove is also formed on the wall of the edge groove, with its length direction aligned with the length direction of the edge groove, and both ends of the pressing groove are sealed. A protrusion is provided on the wall of the transverse sliding rod, extending into the pressing groove. One end of the spring is connected to the protrusion, and the other end is connected to the end wall of the pressing groove. The spring always tends to keep the blocking plate within the end opening of the vertical bonding rod. When the bonding plate is not subjected to any external pressure, the blocking plate is bonded to the bottom wall of the cylindrical measuring ruler.

[0020] By adopting the above technical solution, when the vertical bonding rod gradually approaches the rail of the subway track, the bonding plate will be close to the side wall of the rail in advance. As the vertical bonding rod continues to move, the bonding plate will stop moving due to the pressure of the rail and remain in contact with the rail. However, at this time, the vertical bonding rod will continue to move closer to the rail. At this time, the end of the transverse sliding rod away from the bonding plate will be squeezed out from the other end of the edge groove, so that the blocking plate will move out from the other end opening of the edge groove. At this time, the lower end of the columnar measuring ruler is no longer blocked by the blocking plate and will fall directly from the lower end opening of the vertical bonding rod under the action of gravity and adhere to the sleeper. At this time, the actual settlement height can be calculated based on the distance the columnar measuring ruler falls, thus achieving the effect of conveniently measuring settlement data.

[0021] Optionally, a lifting rod is coaxially arranged at the upper end of the cylindrical measuring ruler, the lifting rod extends vertically upward to the outside, a through hole is opened on the sliding shaft for the lifting rod to pass through, and a lifting block is provided at the end of the lifting rod away from the cylindrical measuring ruler.

[0022] By adopting the above technical solution, when the measurement is completed and the cylindrical measuring ruler needs to be retracted into the vertical fitting rod, simply hold the lifting block by hand and lift it vertically upwards to allow the cylindrical measuring ruler to re-enter the vertical fitting rod. When the height of the cylindrical measuring ruler is higher than the horizontal sliding rod, move the vertical fitting rod horizontally away from the rail, so that the fitting plate is no longer attached to the side wall of the rail. At this time, under the rebound action of the spring, the blocking plate will return to the lower opening of the vertical fitting rod. Then, lower the lifting block to allow the lower end of the cylindrical measuring ruler to be attached to the blocking plate again, thus achieving a more convenient effect of storing the cylindrical measuring ruler.

[0023] Optionally, foot pedals are provided on both sides of the base for workers to step on.

[0024] By adopting the above technical solution, the pedal setting allows workers to firmly press the base against the settlement control seat during operation, and also provides workers with a place to place their feet during operation.

[0025] Optionally, the base is provided with bolt holes, which correspond to and engage with the screw holes on the settlement control seat on the subway track.

[0026] By adopting the above technical solution, after aligning the bolt holes and the screw holes on the settlement control seat, the bolts can be inserted to connect and fix the base and the settlement control seat, thus achieving the effect of fixing the base more conveniently.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When conducting settlement testing on subway tracks, first place the base on the settlement reference seat on the subway track. Then, slide the sliding shaft out from the fixed shaft and move it closer to the track side, so that the vertical fitting rod gradually approaches the rail of the subway track. When the vertical fitting rod is about to approach the side wall of the rail, the rail fitting mechanism will pre-fit onto the side wall of the rail, thereby driving the columnar measuring ruler to automatically fall vertically from the vertical fitting rod, so that the lower end of the columnar measuring ruler directly abuts against the sleeper. Since the settlement reference seat is installed by default flush with the sleeper of the subway track, and the vertical fitting... The lower end of the rod is flush with the upper surface of the base; therefore, the length of the cylindrical measuring ruler moved out from the vertical fitting rod minus the original thickness of the base is the settlement degree at the subway track settlement point; furthermore, during measurement, workers do not need to approach the track, but only need to operate at the settlement reference seat, only allowing the sliding shaft and the vertical fitting rod to be close to the rail, which can achieve the effect of normal measurement during subway operation, and will not hinder the normal operation of the subway, thereby improving the immediacy and efficiency of detecting the location of subway track settlement;

[0029] 2. As the vertical bonding rod gradually approaches the rail of the subway track, the bonding plate will be close to the side wall of the rail. As the vertical bonding rod continues to move, the bonding plate will pause its movement due to the pressure of the rail and remain in contact with the rail. However, the vertical bonding rod will continue to move closer to the rail. At this time, the end of the transverse sliding rod away from the bonding plate will be squeezed out from the other end of the edge groove, allowing the blocking plate to move out from the other end of the edge groove. At this time, the lower end of the columnar measuring ruler is no longer blocked by the blocking plate and will fall directly from the lower end of the vertical bonding rod under the action of gravity and adhere to the sleeper. Then, the actual settlement height can be calculated based on the distance the columnar measuring ruler falls, thus achieving a more convenient effect in measuring settlement data.

[0030] 3. When the measurement is complete and the cylindrical measuring ruler needs to be retracted into the vertical fitting rod, simply hold the lifting block and lift it vertically upwards. This will allow the cylindrical measuring ruler to re-enter the vertical fitting rod. When the height of the cylindrical measuring ruler is higher than the horizontal sliding rod, move the vertical fitting rod horizontally away from the rail, so that the fitting plate is no longer attached to the side wall of the rail. At this time, under the rebound of the spring, the blocking plate will return to the lower opening of the vertical fitting rod. Then, lower the lifting block to allow the lower end of the cylindrical measuring ruler to re-attach to the blocking plate, thus achieving a more convenient effect in storing the cylindrical measuring ruler. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this application;

[0032] Figure 2 This is a partial sectional view of this application;

[0033] Figure 3 This is a partial sectional view used in this application to illustrate the movable support structure;

[0034] Figure 4 This is a partial structural cross-sectional view used in this application to illustrate the connection relationship between the vertical fitting rod and the columnar measuring ruler;

[0035] Figure 5 yes Figure 4 A magnified view of part A in the diagram.

[0036] In the diagram, 1. Base; 11. Receiving groove; 12. Foot pedal; 13. Bolt hole; 2. Bracket; 3. Fixed shaft; 31. Slot; 4. Sliding shaft; 41. Rack; 5. Vertical fitting rod; 51. Edge groove; 511. Extrusion groove; 6. Rail fitting mechanism; 61. Fitting plate; 62. Lateral sliding rod; 621. Protrusion plate; 63. Blocking plate; 64. Spring; 7. Columnar measuring ruler; 71. Lifting rod; 72. Lifting block; 8. Manual drive mechanism; 81. Rotating gear; 82. Rotating shaft; 83. Rotating handle; 9. Moving support mechanism; 91. Support rod; 911. Anti-detachment flange; 92. Extrusion rod; 93. Top plate; 94. Compression spring; 95. Roller; 10. Settlement reference seat. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0038] A subway track settlement detection device, referring to Figure 1 , 2 The system includes a base 1, a bracket 2, a fixed shaft 3, and a sliding shaft 4. The base 1 is used to mount the settlement reference seat 10. It is worth noting that in this application, the settlement reference seat 10 is a pre-established reference point during track construction to address track settlement. After track construction, the settlement reference seat 10 is installed alongside the track, and its upper surface is flush with the sleepers on the track. The bracket 2 is mounted on the base 1, and the fixed shaft 3 is horizontally mounted on the bracket 2. The fixed shaft 3 is hollow inside and open at one end. The sliding shaft 4 is coaxially slidably mounted inside the fixed shaft 3. The sliding shaft 4 is located away from the fixed shaft 1. A vertically mounted vertical fitting rod 5 is installed at one end of the fixed axis 3. The vertical fitting rod 5 is hollow inside and open at the bottom. The lower end face of the vertical fitting rod 5 is flush with the surface of the base 1. A rail fitting mechanism 6 and a columnar measuring ruler 7 are installed on the vertical fitting rod 5. The columnar measuring ruler 7 is slidably mounted inside the vertical fitting rod 5. The columnar measuring ruler 7 is a cuboid in shape with graduations on all four sides. When the vertical fitting rod 5 moves horizontally so that the rail fitting mechanism 6 abuts against the side wall of the rail, the columnar measuring ruler 7 automatically slides out from the vertical fitting rod 5 and fits against the upper surface of the sleeper.

[0039] When conducting settlement testing on subway tracks, the base 1 is first placed on the settlement reference seat 10 on the subway track. Then, the sliding shaft 4 slides out from the fixed shaft 3 and moves closer to the track side, causing the vertical fitting rod 5 to gradually approach the rail of the subway track. When the vertical fitting rod 5 is about to approach the side wall of the rail, the rail fitting mechanism 6 will pre-fit onto the side wall of the rail, thereby driving the columnar measuring ruler 7 to automatically fall vertically from the vertical fitting rod 5, allowing the lower end of the columnar measuring ruler 7 to directly abut against the sleeper. Since the settlement reference seat 10 is installed by default flush with the sleeper of the subway track and is vertical... The lower end of the fitting rod 5 is flush with the upper surface of the base 1; therefore, the length of the columnar measuring ruler 7 moving out from the vertical fitting rod 5 minus the original thickness of the base 1 is the settlement degree at the subway track settlement point; furthermore, during measurement, workers do not need to approach the track, but only need to operate at the settlement reference seat 10, only allowing the sliding shaft 4 and the vertical fitting rod 5 to be close to the rail, which can achieve the effect of normal measurement during subway operation, and will not hinder the normal operation of the subway, thereby improving the immediacy and efficiency of detecting the location of subway track settlement.

[0040] Combination Figure 1 , 2 A manual drive mechanism 8 is provided on the fixed shaft 3. The manual drive mechanism 8 is used to drive the sliding shaft 4 to move along the length direction of the fixed shaft 3. Specifically, the manual drive mechanism 8 includes a rotating gear 81, a rotating shaft 82, and a rotating handle 83. The rotating shaft 82 is rotatably mounted on the side wall of the fixed shaft 3. The rotating gear 81 is coaxially mounted on one end of the rotating shaft 82 located inside the fixed shaft 3, and an opening is provided on the upper surface of the fixed shaft 3. Part of the rotating gear 81 passes through the opening and is located outside the fixed shaft 3. The rotating handle 83 is installed on the end of the rotating shaft 82 away from the rotating gear 81. A rack 41 is provided on the sliding shaft 4 along the length direction of the sliding shaft 4, and the rack 41 meshes with the rotating gear 81.

[0041] When it is necessary to move the sliding shaft 4 within the fixed shaft 3, simply turn the rotary handle 83 by hand to rotate the rotating shaft 82. The rotation of the rotating shaft 82 will drive the rotating gear 81 to rotate. The rotation of the rotating gear 81 will cause the meshing rack 41 to move, thereby realizing the sliding of the sliding shaft 4 within the fixed shaft 3, achieving the effect of conveniently driving the sliding shaft 4 to move. That is, clockwise and counterclockwise rotation can realize the extension and shortening of the sliding shaft 4 on the fixed shaft 3. Moreover, in order to prevent the sliding shaft 4 from sliding too much and disengaging from the fixed shaft 3, an anti-disengagement block is provided at the end of the sliding shaft 4 located within the fixed shaft 3, and a flange corresponding to the anti-disengagement block is also provided at the opening edge of the fixed shaft 3.

[0042] Combination Figure 3The sliding shaft 4 is also provided with a movable support mechanism 9, which is used to support the sliding shaft 4 when it moves, so as to keep the sliding shaft 4 in a horizontal state. Specifically, the movable support mechanism 9 includes a support rod 91, a pressing rod 92, a top plate 93, a compression spring 94, and a roller 95. The support rod 91 is vertically arranged at the lower end of the sliding shaft 4. The support rod 91 is hollow inside and has an opening at the lower end. The pressing rod 92 is slidably inserted into the support rod 91 and one end is located outside the support rod 91. The roller 95 is rotatably arranged at the end of the pressing rod 92 located outside the support rod 91. The top plate 93 is arranged at the end of the pressing rod 92 located inside the support rod 91. The end opening of the support rod 91 is provided with an anti-detachment flange 911 to prevent the top plate 93 from detaching from the inside of the support rod 91. The compression spring 94 is arranged between the top plate 93 and the anti-detachment flange 911, and the compression spring 94 makes the top plate 93 always tend to move towards the opening side of the support rod 91.

[0043] When the sliding shaft 4 slides out from the fixed shaft 3, the compression spring 94 always tends to move towards the opening side of the support rod 91. Therefore, the compression spring 94 will move the top plate 93 from top to bottom, so that the compression rod 92 also always tends to move outward from the opening of the support rod 91. This allows the roller 95 to always be in contact with the ground at the subway track. That is, when the ground at the subway track is not stable, the setting of the compression spring 94 can keep the roller 95 in contact with the ground and keep the extension process of the sliding shaft 4 stable.

[0044] like Figure 3 As shown, the base 1 has a receiving groove 11, the length direction of which is consistent with the sliding direction of the sliding shaft 4; the lower end wall of the fixed shaft 3 has a slot 31 along the length direction of the fixed shaft 3, the slot 31 and the receiving groove 11 are directly opposite each other in the vertical direction; when the sliding shaft 4 is housed in the fixed shaft 3, the support rod 91 passes through the slot 31 and extends vertically downward into the receiving groove 11.

[0045] When it is not necessary to extend the sliding shaft 4, most of the shaft section of the sliding shaft 4 is stored in the fixed shaft 3, and the support rod 91 is located between the slot 31 and the receiving groove 11, that is, the roller 95 is located in the receiving groove 11, so that the sliding shaft 4 can be stored more easily, so that even with the addition of the moving support mechanism 9, the entire detection device can be stored and folded.

[0046] Reference Figure 4 , 5The rail bonding mechanism 6 includes a bonding plate 61, a transverse sliding rod 62, a blocking plate 63, and a first spring 64. The vertical bonding rod 5 has transverse edge grooves 51 on both inner walls near its lower opening, and transverse slots on both outer walls of the vertical bonding rod 5, which are connected to the edge grooves 51. Both ends of the edge grooves 51 are open. The transverse sliding rod 62 is slidably inserted into the edge grooves 51, with one end extending out of the edge grooves 51. The bonding plate 61 is vertically positioned at the end of the transverse sliding rod 62 outside the edge grooves 51, and the blocking plate 63 is positioned at the end of the transverse sliding rod 62 away from the bonding plate 61. In this embodiment, two transverse sliding rods 62 are provided, each located within an edge groove 51. All are connected to the surface of the bonding plate 61. The transverse sliding rod 62 can drive the blocking piece 63 to pass through the transverse slot normally. The groove wall of the edge sliding groove 51 is also provided with a pressing groove 511. The length direction of the pressing groove 511 is consistent with the length direction of the edge sliding groove 51, and the two ends of the pressing groove 511 are sealed. The rod wall of the transverse sliding rod 62 is provided with a protrusion 621. The protrusion 621 extends into the pressing groove 511. One end of the first spring 64 is connected to the protrusion 621, and the other end is connected to the end wall of the pressing groove 511. The first spring 64 always tends to keep the blocking piece 63 in the end opening of the vertical bonding rod 5. When the bonding plate 61 is not subjected to any external pressure, the upper surface of the blocking piece 63 is in contact with the bottom wall of the columnar measuring ruler 7.

[0047] As the vertical fitting rod 5 gradually approaches the rail of the subway track, the fitting plate 61 will be close to the side wall of the rail. As the vertical fitting rod 5 continues to move, the fitting plate 61 will pause its movement due to the pressure of the rail and remain in contact with the rail. However, at this time, the vertical fitting rod 5 will continue to move closer to the rail. At this time, the end of the transverse sliding rod 62 away from the fitting plate 61 will be squeezed out from the other end of the edge groove 51, so that the blocking plate 63 will move out from the other end opening of the edge groove 51. At this time, the lower end of the columnar measuring ruler 7 will no longer be blocked by the blocking plate 63 and will fall directly from the lower end opening of the vertical fitting rod 5 under the action of gravity and fit onto the sleeper. At this time, the actual settlement height can be calculated based on the distance the columnar measuring ruler 7 falls, thus achieving the effect of conveniently measuring settlement data.

[0048] Combination Figure 4A lifting rod 71 is coaxially mounted on the upper end of the cylindrical measuring ruler 7. The lifting rod 71 extends vertically upward to the outside. A through hole is provided on the sliding shaft 4 for the lifting rod 71 to pass through. A lifting ring is provided at the end of the lifting rod 71 away from the cylindrical measuring ruler 7. When the measurement is completed and the cylindrical measuring ruler 7 needs to be retracted into the vertical fitting rod 5, simply hold the lifting block 72 by hand and lift it vertically upward to allow the cylindrical measuring ruler 7 to re-enter the vertical fitting rod 5. When the height of the cylindrical measuring ruler 7 is higher than the horizontal sliding rod 62, move the vertical fitting rod 5 horizontally away from the rail so that the fitting plate 61 is no longer attached to the side wall of the rail. At this time, under the rebound action of the spring 64, the blocking plate 63 will return to the lower opening of the vertical fitting rod 5. Then, put down the lifting block 72 so that the lower end of the cylindrical measuring ruler 7 is attached to the blocking plate 63 again, thus achieving a more convenient effect of storing the cylindrical measuring ruler 7.

[0049] like Figure 1 As shown, foot pedals 12 are provided on both sides of the base 1, which are used by the testing personnel to step on. The foot pedals 12 allow the worker to firmly press the base 1 against the settlement control seat 10 during operation, and also provide a place for the worker to place their feet during operation.

[0050] Combination Figure 1 The base 1 has bolt holes 13, which correspond to the screw holes on the settlement control seat 10 on the subway track. After aligning the bolt holes 13 and the screw holes on the settlement control seat 10, the bolts are inserted to connect and fix the base 1 and the settlement control seat 10, achieving a convenient fixation of the base 1. In other embodiments, both the bolt holes 13 and the screw holes can be replaced with insertion holes. That is, only two insertion holes need to be aligned vertically, and then a insertion rod can be inserted, because the base 1 is also fixed by the pressure of the worker stepping on the foot pedal 12.

[0051] The implementation principle of this application embodiment is as follows: When it is necessary to detect the settlement part of the track, first find the settlement reference seat 10 corresponding to the settlement part, then align the bolt hole 13 on the base 1 with the screw hole on the settlement reference seat 10, and then screw the connecting bolt into the bolt hole 13 so that the base 1 and the settlement reference seat 10 are connected together. Then, the inspector steps on the foot pedal 12 with both feet respectively, then leans forward and holds the rotating handle 83 with his hands. He makes a circular motion with his hands to rotate the rotating handle 83, that is, to make the sliding shaft 4 gradually slide out from the opening at one end of the fixed shaft 3. At this time, the roller 95 at the lower end of the support rod 91 will move out from the receiving groove 11 and roll continuously as the sliding shaft 4 extends. Moreover, the roller 95 will always be in contact with the ground under the force of the compression spring 94, regardless of whether the ground is high or low. During this process, the vertical contact rod 5 at the end of the sliding shaft 4 gradually approaches the rail. Before it approaches, the contact plate 61 at the front end of the vertical contact rod 5 is pre-attached to the side wall of the rail. As the sliding shaft 4 continues to move, it pushes the transverse sliding rod 62 away from the rail, causing the blocking plate 63 to leave the lower opening of the vertical contact rod 5 and no longer support the cylindrical measuring ruler 7. It is worth noting that the area of ​​the blocking plate 63 is smaller than the area of ​​the lower opening of the vertical contact rod 5, and only a small part of the lower surface of the cylindrical measuring ruler 7 is attached to the blocking plate 63. At this time, the cylindrical measuring ruler 7 will fall directly onto the rail under the action of gravity. On one side of the sleeper surface; take the height from which the cylindrical measuring ruler 7 is moved out of the vertical fitting rod 5, and then subtract the thickness of the base 1 itself to obtain the settlement value of the settlement part; it is worth noting that a railing can be set up around the settlement control seat 10, and then an opening can be made on the side facing the rail. This allows workers to be safely positioned at the settlement control seat 10, and measurements can be taken even when the train is running normally. Even if the measurement speed is fast, it is still necessary to stagger the measurement time with the train's approach to avoid measuring when the train is passing by directly. The train will bring strong winds, which will affect the measurement results.

[0052] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A subway track settlement detection device, characterized in that, The system includes a base (1), a bracket (2), a fixed shaft (3), and a sliding shaft (4). The bracket (2) is mounted on the base (1), and the fixed shaft (3) is horizontally mounted on the bracket (2). The fixed shaft (3) is hollow inside and open at one end. The sliding shaft (4) is slidably mounted coaxially inside the fixed shaft (3). A vertical fitting rod (5) is vertically mounted at the end of the sliding shaft (4) away from the fixed shaft (3). The vertical fitting rod (5) is hollow inside and open at the lower end. The lower end face of the vertical fitting rod (5) is flush with the surface of the base (1). The vertical fitting rod (5) is provided with a rail fitting mechanism (6) and a columnar measuring ruler (7). The columnar measuring ruler (7) is slidably disposed inside the vertical fitting rod (5). When the vertical fitting rod (5) moves horizontally so that the rail fitting mechanism (6) abuts against the side wall of the rail, the vertical fitting rod (5) continues to move, and the columnar measuring ruler (7) automatically slides out from the vertical fitting rod (5) and fits against the upper surface of the sleeper. The rail bonding mechanism (6) includes a bonding plate (61), a transverse sliding rod (62), a blocking plate (63), and a spring (64). The vertical bonding rod (5) has transverse edge grooves (51) on both inner walls near its lower opening. Both ends of the edge grooves (51) are open. The transverse sliding rod (62) is slidably inserted into the edge grooves (51) with one end extending out of the edge grooves (51). The bonding plate (61) is located at the end of the transverse sliding rod (62) outside the edge grooves (51). The blocking plate (63) is located at the end of the transverse sliding rod (62) away from the bonding plate (61). The edge grooves (51) also have... The extrusion groove (511) has a length direction that is consistent with the length direction of the edge slide groove (51), and both ends of the extrusion groove (511) are sealed. A protrusion (621) is provided on the wall of the transverse sliding rod (62), and the protrusion (621) extends into the extrusion groove (511). One end of the spring (64) is connected to the protrusion (621), and the other end is connected to the end wall of the extrusion groove (511). The spring (64) always tends to keep the blocking plate (63) in the end opening of the vertical fitting rod (5). When the fitting plate (61) is not subjected to any external pressure, the blocking plate (63) is in contact with the bottom wall of the column measuring ruler (7). The base (1) is provided with bolt holes (13), which correspond to the bolt holes on the settlement reference seat (10) on the subway track. The settlement reference seat (10) is a reference object established in advance for track settlement during track construction. After the track is built, the settlement reference seat (10) will be installed on the side. The upper surface of the settlement reference seat 10 is flush with the sleeper on the track.

2. The subway track settlement detection device according to claim 1, characterized in that, A manual drive mechanism (8) is provided on the fixed shaft (3), and the manual drive mechanism (8) is used to drive the sliding shaft (4) to move along the length direction of the fixed shaft (3).

3. The subway track settlement detection device according to claim 2, characterized in that, The manual drive mechanism (8) includes a rotating gear (81), a rotating shaft (82), and a rotating handle (83). The rotating shaft (82) is rotatably mounted on the side wall of the fixed shaft (3). The rotating gear (81) is coaxially mounted at one end of the rotating shaft (82) located inside the fixed shaft (3). The rotating handle (83) is mounted at the end of the rotating shaft (82) away from the rotating gear (81). A rack (41) is provided on the sliding shaft (4) along the length direction of the sliding shaft (4). The rack (41) meshes with the rotating gear (81).

4. The subway track settlement detection device according to claim 1, characterized in that, The sliding shaft (4) is also provided with a movable support mechanism (9), which is used to support the sliding shaft (4) when it moves, so that the sliding shaft (4) remains horizontal.

5. The subway track settlement detection device according to claim 4, characterized in that, The movable support mechanism (9) includes a support rod (91), a pressing rod (92), a top plate (93), a compression spring (94), and a roller (95). The support rod (91) is vertically arranged at the lower end of the sliding shaft (4). The support rod (91) is hollow inside and open at the lower end. The pressing rod (92) is slidably inserted inside the support rod (91) with one end located outside the support rod (91). The roller (95) is rotatably arranged on the pressing rod (92) at the support rod (91). One end of the rod (91) is outside; the top plate (93) is disposed at one end of the compression rod (92) located inside the support rod (91), the end opening of the support rod (91) is provided with an anti-detachment flange (911) to prevent the top plate (93) from detaching from the support rod (91), the compression spring (94) is disposed between the top plate (93) and the anti-detachment flange (911), and the compression spring (94) makes the top plate (93) always have a tendency to move toward the opening side of the support rod (91).

6. The subway track settlement detection device according to claim 5, characterized in that, The base (1) is provided with a receiving groove (11), the length direction of which is consistent with the sliding direction of the sliding shaft (4); the lower end wall of the fixed shaft (3) is provided with a slot (31) along the length direction of the fixed shaft (3), and when the sliding shaft (4) is housed in the fixed shaft (3), the support rod (91) passes through the slot (31) and extends vertically downward into the receiving groove (11).

7. The subway track settlement detection device according to claim 1, characterized in that, A lifting rod (71) is coaxially arranged at the upper end of the cylindrical measuring ruler (7). The lifting rod (71) extends vertically upward to the outside. A through hole is provided on the sliding shaft (4) for the lifting rod (71) to pass through. A lifting block (72) is provided at the end of the lifting rod (71) away from the cylindrical measuring ruler (7).

8. The subway track settlement detection device according to any one of claims 1-7, characterized in that, Both sides of the base (1) are provided with foot pedals (12), which are used for workers to step on.

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