A limiting device for construction of a ballastless track bed plate

Abstract

The application discloses a limiting device for ballastless track bed plate construction and relates to the technical field of ballastless track bed plate limiting. The limiting device is used for limiting the ballastless track bed plate, and the limiting device comprises a main body mechanism, a hoisting mechanism, a directional mechanism and a detection positioning mechanism. The main body mechanism is connected with the hoisting mechanism, the directional mechanism and the detection positioning mechanism. The main body mechanism comprises a driving shell, a driving support and a rotating support disc. The driving shell is provided with a circular rotating groove. The driving shell and the rotating support disc are rotationally connected through the circular rotating groove. The driving support and the rotating support disc are tightly connected. The driving shell is connected with the detection positioning mechanism. The detection positioning mechanism comprises a mounting base, a sliding resistor and a fixed baffle. The mounting base is slidingly connected with the driving shell. The mounting base is tightly connected with a driving hydraulic cylinder at the bottom.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ballastless track slab limiting technology, in particular to a limiting device for ballastless track slab construction. BACKGROUND

[0002] With the rapid development of high-speed railway and urban rail transit, the requirements for ballastless track slab construction technology are also becoming higher and higher. As an important part of high-speed railway and urban rail transit, the construction quality of ballastless track slab directly affects the running safety and riding comfort of trains. During the construction of ballastless track slab, the setting of the limiting device is one of the key measures to ensure the accurate position of the track slab.

[0003] The laying precision of ballastless track slab is extremely high, and the installation of the limiting device for ballastless track slab must be accurate. Conventional laying is mostly carried out after measurement, and in this process, manual operation of the machine to place the ballastless track slab may have errors, resulting in inconsistent gap size between the ballastless track slabs, which not only damages the precision and quality of construction, but also causes large noise when the train passes after being put into use later. SUMMARY

[0004] The purpose of the present application is to provide a limiting device for ballastless track slab construction to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] The limiting device limits the ballastless track slab, and the limiting device comprises a main body mechanism, a hoisting mechanism, a directional mechanism and a detection positioning mechanism, the main body mechanism and the hoisting mechanism are connected, the main body mechanism and the directional mechanism are connected, the main body mechanism and the detection positioning mechanism are connected, and the hoisting mechanism and the detection positioning mechanism are connected.

[0007] The main body mechanism comprises a driving shell, a driving bracket and a rotating support disc, the driving shell is provided with a circular rotating groove, the driving shell and the rotating support disc are rotationally connected through the circular rotating groove, the driving bracket and the rotating support disc are tightly connected, and the driving shell and the detection positioning mechanism are connected.

[0008] The detection positioning mechanism comprises a mounting base, a sliding resistor and a fixed baffle, the mounting base and the driving shell are slidingly connected, the mounting base is tightly connected with a driving hydraulic cylinder at the bottom, the bottom surface of the driving shell and the fixed end of the driving hydraulic cylinder are tightly connected, the mounting base is placed on the side of the driving shell facing the placed ballastless track slab, the sliding resistor and the mounting base are tightly connected, one end of the sliding resistor and the fixed baffle are tightly connected, and the fixed baffle extends in the vertical direction towards the sliding resistor.

[0009] In the limiting device, the device is used for limiting hoisting of the ballastless track slab, the main mechanism provides overall support for work of other mechanisms, provides the basis for work, the hoisting mechanism is used for grabbing and hoisting the ballastless track slab to be placed, the orientation mechanism provides a track to facilitate the device to travel according to a certain track, reduces deviation, and the detection positioning mechanism is used for positioning the new ballastless track slab to be placed, so that the distance between the ballastless track slabs remains constant, which not only facilitates later pouring, but also facilitates uniform stress in subsequent use after completion, prolonging the service life.

[0010] Further, the main mechanism further comprises a driving motor and a support rod, the driving shell is provided with a mounting groove, the mounting groove and the circular rotating groove are communicated, the driving motor is connected with the driving shell, the driving motor is fastened with the mounting groove, the output end of the driving motor is fastened with the rotating support disc, one end of the support rod is fastened with the rotating support disc, and the end of the support rod away from the rotating support disc is fastened with the driving support.

[0011] In the main mechanism, the mechanism is used for providing support for other mechanisms, the driving shell is provided with a communicating mounting groove and a circular rotating groove, the mounting groove is fastened with a driving motor, the output end of the driving motor faces the circular rotating groove, the rotating support disc is rotatably connected to the circular rotating groove, the rotating support disc is fastened with the output end of the driving motor, after the driving motor is started, the rotating support disc will be driven to rotate, the driving support is fastened to the rotating support disc, and there is a certain angle between the driving support and the rotating support disc.

[0012] Further, the hoisting mechanism comprises a fixed plate, a rotary motor, the fixed plate is fastened and connected with the driving support, a rectangular groove is arranged on the fixed plate, the rotary motor is fastened and connected with the rectangular groove, the output end of the rotary motor faces the ground, an annular rotating groove is arranged on the fixed plate, the hoisting mechanism further comprises a visual probe, a movable clamp plate, a pushing hydraulic cylinder and a driving rod, the visual probe is fastened and connected with the movable clamp plate, the detection end of the visual probe faces the ground, an annular protrusion is arranged on the movable clamp plate, the movable clamp plate is connected with the fixed plate, the movable clamp plate is slidably connected with the annular rotating groove, the output end of the rotary motor is fastened and connected with the movable clamp plate, two pushing grooves are arranged on the surface of the movable clamp plate facing the ground, the pushing grooves of the movable clamp plate are symmetrically arranged, two pushing hydraulic cylinders are arranged, the two pushing hydraulic cylinders are connected with the movable clamp plate, the two pushing hydraulic cylinders are respectively arranged in the two pushing grooves, the fixed end of the pushing hydraulic cylinder is fastened and connected with the wall surface of the pushing groove, the fixed ends of the two pushing hydraulic cylinders are close to the center of the movable clamp plate, two driving rods are arranged, the two driving rods are in the shape of "T", the two driving rods are fastened and connected with the two pushing hydraulic cylinders respectively, the output end of the pushing hydraulic cylinder is fastened and connected with one end of the driving rod, the driving rod is slidably connected with the pushing groove, the movable clamp plate is connected with the detection positioning mechanism, the hoisting mechanism further comprises an extension rod and a bed plate gripper, four extension rods are arranged, the four extension rods are symmetrically arranged on the movable clamp plate, the extension rod is fastened and connected with the movable clamp plate, the four extension rods are averagely divided into two groups, the two groups of extension rods are fastened and connected with the two ends of the two driving rods respectively, the bed plate gripper is in the shape of "T", one end of the bed plate gripper is fastened and connected with one group of extension rods, the surface where the other end of the bed plate gripper is located is parallel to the ground.

[0013] In the lifting mechanism, the mechanism is used for lifting the ballastless track slab, the fixed plate and the driving support are tightly connected, and the fixed plate is used as the basis of the whole lifting mechanism. A rectangular groove is further arranged on the fixed plate, a rotary motor is arranged in the rectangular groove, the output end of the rotary motor faces the ground, and a ring-shaped rotating groove is further arranged on the side of the fixed plate facing the ground. The movable clamping plate and the ring-shaped rotating groove are slidably connected, clamped in the ring-shaped rotating groove, and the center of the movable clamping plate is tightly connected with the output end of the rotary motor. After the rotary motor is started, the movable clamping plate is driven to rotate, and the movable clamping plate slides in the ring-shaped rotating groove. The fixed plate supports the movable clamping plate to a certain extent. A visual probe is further arranged on the movable clamping plate. When the lifting mechanism is turned to the place where the ballastless track slab is to be placed, whether the movable clamping plate side and the last placed ballastless track slab are in a straight line can be detected through the visual probe. The push hydraulic cylinder is arranged in the pushing groove, the output end of the push hydraulic cylinder is tightly connected with the driving rod, and the push hydraulic cylinder is started. After the push hydraulic cylinder is started, the driving rod is pushed to move in the pushing groove. The two telescopic rods are tightly connected at the two ends of the pushing groove, and the other ends of the two telescopic rods are tightly connected with the bed plate clamping. After the device is started, the push hydraulic cylinder pushes the driving rod away, so that the distance between the two bed plate clamps becomes larger. The telescopic rod is elongated to the bottom of a ballastless track slab to be placed. Then the push hydraulic cylinder is pulled back, so that the distance between the two bed plate clamps becomes smaller. When the bed plate clamping is clamped to the ballastless track slab, it cannot be further reduced. The push hydraulic cylinder stops driving, the telescopic rod retracts, the ballastless track slab is lifted, and after being turned to the area to be placed, the distance needs to be adjusted. In the process of adjustment, the visual probe is always started to detect whether the movable clamping plate side and the last placed ballastless track slab are in a straight line to prevent subsequent misplacement. When reaching the appropriate position, the telescopic rod is elongated so that the bottom of the bed plate clamping is in contact with the ground. The push hydraulic cylinder is started, the distance between the two bed plate clamps becomes larger, the bed plate clamping and the ballastless track slab are separated, and then the telescopic rod is retracted to complete the placement of a ballastless track slab.

[0014] Further, the orientation mechanism includes an orientation track, a driven roller and a servo motor. The orientation track is laid on the ground. The orientation track is provided with two tracks. The two tracks are arranged in parallel. The track of the orientation track is the path of the ballastless track slab to be laid. The orientation track is provided with a moving groove. The track of the moving groove is consistent with the track of the orientation track. The driven roller and the driving shell are tightly connected through a rotating rod. The driven roller is not less than four. The driven roller is connected with the orientation track. The driven roller is engaged with the moving groove. The servo motor drives the driven roller.

[0015] In the orientation mechanism, the mechanism is used for defining the path of the placement of the ballastless track slab, the orientation track is parallel to the path of the ballastless track slab to be placed, the orientation track is provided with a moving groove, the driven roller is engaged with the moving groove, the driven roller and the driving shell are connected through the rotating shaft, the driven roller and the driving shell are driven to move along the orientation track through the servo motor, after the device is started, the servo motor is started, the driven roller and the driving shell are driven to move along the orientation track, which facilitates the placement of the ballastless track slab.

[0016] Further, the detection positioning mechanism further comprises a movable baffle, a magnetic block and a reset spring, one end of the movable baffle is fixedly connected with the sliding rheostat, the movable baffle extends in the vertical direction of the sliding rheostat, the movable baffle is made of metal, the magnetic block is fixedly connected with one end of the movable baffle close to the last placed ballastless track slab, the magnetic block is energized through the connecting wire and the power supply, and the reset spring is fixedly connected between the fixed baffle and the movable baffle.

[0017] In the detection positioning mechanism, the mechanism detects the distance between the gap between the ballastless track slab to be placed and the ballastless track slab that has been placed, after the driving shell moves to a certain position, the driving hydraulic cylinder drives the installation base to fall, the fixed baffle fixedly connected with the sliding rheostat is attached to one side of the last placed ballastless track slab, then the telescopic rod is elongated, so that the bed plate gripper falls with the ballastless track slab, the telescopic rod stops elongating when the bed plate gripper does not completely fall, at this time, the distance between the bed plate gripper and the ground is less than the height of one ballastless track slab, and the distance between the bed plate gripper and the last placed ballastless track slab is relatively close, the magnetic block fixedly connected with the bed plate gripper has magnetism after being energized, the movable baffle fixedly connected with the sliding sheet of the sliding rheostat is attracted and moves in the direction of the magnetic block until the movable baffle is attached to the magnetic block, then the driving motor drives the rotating disc to rotate to expand the distance, the rotating motor continuously adjusts the angle of placement under the detection of the visual probe, so that the placement is kept in a straight line with the last placed ballastless track slab, in the moving process, because the movable baffle is always attached to the magnetic block, the movable baffle is moved together, the resistance value on the sliding rheostat gradually decreases, when reaching the critical point, the current can pass, at this time, the driving motor and the rotating motor stop driving, the magnetic block is de-energized and loses magnetism, the movable baffle is no longer attracted to the magnetic block, the driving hydraulic cylinder lifts the installation base, the telescopic rod is elongated, so that the bed plate gripper is attached to the ground, the driving hydraulic cylinder is started, so that the distance between the two bed plate grippers becomes larger, the bed plate gripper and the ballastless track slab are separated, then the telescopic rod is retracted, and the placement of one ballastless track slab is completed.

[0018] Compared with the prior art, the application has the beneficial effects that after starting, the driving motor drives the rotating support disc to rotate, the hoisting mechanism clamps the to-be-placed ballastless track slab, after completion, the driving motor drives the rotating support disc to rotate back, so that the hoisting mechanism faces the place to be placed, the servo motor starts, drives the driven roller to move along the directional track with the driving shell, stops after moving to the appropriate position, the driving hydraulic cylinder drives the installation base to fall, and the fixed baffle fastened with the sliding rheostat is attached to one side of the last placed ballastless track slab, then the telescopic rod is elongated, so that the ballastless track slab falls with the ballastless track slab clamped by the ballastless track slab clamp, the telescopic rod stops elongating when the ballastless track slab does not completely fall, at this time, the distance between the ballastless track slab clamp and the ground is less than the height of one ballastless track slab, and the distance between the ballastless track slab clamp and the last placed ballastless track slab is relatively close, the ballastless track slab clamp is fastened with a magnetic block, the magnetic block has magnetism after being electrified, the movable baffle fastened with the sliding sheet of the sliding rheostat is attracted and moves along with the sliding sheet to the magnetic block until the movable baffle is attached to the magnetic block, then the driving motor drives the rotating support disc to rotate to expand the distance, the rotating motor continuously adjusts the angle of placement under the detection of the visual probe, and the placement is kept in a straight line with the last placed ballastless track slab, in the moving process, because the movable baffle is always attached to the magnetic block, the movable baffle is moved together, the resistance value on the sliding rheostat gradually decreases, when reaching the critical point, the current can pass, at this time, the driving motor and the rotating motor stop driving, the magnetic block is de-energized and loses magnetism, the movable baffle is no longer adsorbed to the magnetic block, the driving hydraulic cylinder lifts the installation base, the telescopic rod is elongated, so that the ballastless track slab clamp is attached to the ground, the driving hydraulic cylinder is started, so that the distance between the two ballastless track slab clamps becomes larger, the ballastless track slab clamp and the ballastless track slab are separated, then the telescopic rod is retracted, and the placement of one ballastless track slab is completed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the overall structure of the application;

[0020] Figure 2 It is a side view of the application;

[0021] Figure 3 It is Figure 2 A partial enlarged view of A;

[0022] Figure 4 It is a top view of the structure of the application;

[0023] Figure 5 It is Figure 4 A sectional view;

[0024] Figure 6 It is Figure 5 A partial enlarged view of B;

[0025] Figure 7 It is a schematic view of the structure of the application;

[0026] Figure 8 for Figure 7 A magnified view of a portion of the C area.

[0027] In the diagram: 1. Ballastless track bed; 2. Main structure; 21. Drive housing; 211. Mounting slot; 212. Circular rotating slot; 22. Drive bracket; 23. Rotating support plate; 24. Drive motor; 25. Support rod; 3. Lifting mechanism; 31. Fixing plate; 311. Rectangular slot; 312. Annular rotating slot; 32. Rotary motor; 33. Movable clamping plate; 34. Pushing hydraulic cylinder; 35. Drive rod; 36. Telescopic rod; 37. Bed board gripper; 4. Orientation mechanism; 41. Orientation track; 411. Moving slot; 42. Driven roller; 5. Detection and positioning mechanism; 51. Mounting base; 52. Sliding rheostat; 53. Fixed baffle; 54. Movable baffle; 55. Magnetic block; 56. Return spring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figures 1-8 As shown, the present invention provides a limiting device for the construction of ballastless track slabs. The limiting device limits the ballastless track slab 1. The limiting device includes a main body mechanism 2, a hoisting mechanism 3, an orientation mechanism 4, and a detection and positioning mechanism 5. The main body mechanism 2 is connected to the hoisting mechanism 3, the orientation mechanism 4, the detection and positioning mechanism 5, and the hoisting mechanism 3 is connected to the detection and positioning mechanism 5.

[0030] The main body 2 includes a drive housing 21, a drive bracket 22 and a rotating support plate 23. The drive housing 21 is provided with a circular rotating groove 212. The drive housing 21 and the rotating support plate 23 are rotatably connected through the circular rotating groove 212. The drive bracket 22 and the rotating support plate 23 are fastened together. The drive housing 21 is connected to the detection and positioning mechanism 5.

[0031] The detection and positioning mechanism 5 includes a mounting base 51, a sliding rheostat 52, and a fixed baffle 53. The mounting base 51 and the drive housing 21 are slidably connected. A drive hydraulic cylinder is fastened to the bottom of the mounting base 51. The bottom surface of the drive housing 21 and the fixed end of the drive hydraulic cylinder are fastened together. The mounting base 51 is placed on the side of the drive housing 21 facing the placed ballastless track bed 1. The sliding rheostat 52 is fastened to the mounting base 51. One end of the sliding rheostat 52 is fastened to the fixed baffle 53. The fixed baffle 53 extends in the direction perpendicular to the sliding rheostat 52.

[0032] In the limiting device, the device is used for limiting hoisting of the ballastless track slab 1, the main body mechanism 2 provides overall support for work of other mechanisms and provides a basis for work, the hoisting mechanism 3 is used for grabbing and hoisting the ballastless track slab 1 to be placed, the orientation mechanism 4 provides a track to facilitate the device to travel along a certain track and reduce deviation, and the detection positioning mechanism 5 is used for positioning the new ballastless track slab 1 to be placed, so that the distance between the ballastless track slabs 1 remains constant, which is not only convenient for later pouring, but also facilitates uniform stress in subsequent use after completion and prolongs the service life.

[0033] The main body mechanism 2 further comprises a driving motor 24 and a support rod 25, the driving shell 21 is provided with a mounting groove 211 in communication with a circular rotating groove 212, the driving motor 24 is connected with the driving shell 21, the driving motor 24 is fastened to the mounting groove 211, the output end of the driving motor 24 is fastened to the rotating support disc 23, one end of the support rod 25 is fastened to the rotating support disc 23, and the other end of the support rod 25 away from the rotating support disc 23 is fastened to the driving support 22, the driving shell 21 is connected with the orientation mechanism 4, and the driving support 22 is connected with the hoisting mechanism 3.

[0034] In the main body mechanism 2, the mechanism is used for providing support for other mechanisms, the driving shell 21 is provided with a mounting groove 211 and a circular rotating groove 212 in communication, the mounting groove 211 is fastened to the driving motor 24, the output end of the driving motor 24 faces the circular rotating groove 212, the rotating support disc 23 is rotatably connected to the circular rotating groove 212, the rotating support disc 23 is fastened to the output end of the driving motor 24, after the driving motor 24 is started, the rotating support disc 23 is driven to rotate, the driving support 22 is fastened to the rotating support disc 23, and there is a certain angle between the driving support 22 and the rotating support disc 23, the support rod 25 connects the driving support 22 and the rotating support disc 23 to provide support for the driving support 22, the driving support 22 is used to be connected with the hoisting mechanism 3 to hoist the ballastless track slab 1, after the device is started, the driving motor 24 drives the rotating support disc 23 to rotate, the hoisting mechanism 3 on the rotating support disc 23 grabs and clamps the ballastless track slab 1 to be placed, and then the driving motor 24 drives the rotating support disc 23 to rotate back, so that the hoisting mechanism 3 faces the place to be placed.

[0035] The hoisting mechanism 3 comprises a fixed plate 31, a rotary motor 32, the fixed plate 31 and the driving support 22 are tightly connected, the fixed plate 31 is provided with a rectangular groove 311, the rotary motor 32 and the rectangular groove 311 are tightly connected, the output end of the rotary motor 32 faces the ground, the fixed plate 31 is provided with an annular rotating groove 312, the hoisting mechanism 3 further comprises a visual probe, a movable clamp plate 33, a pushing hydraulic cylinder 34 and a driving rod 35, the visual probe and the movable clamp plate 33 are tightly connected, the detection end of the visual probe faces the ground, the movable clamp plate 33 is provided with an annular protrusion, the movable clamp plate 33 is connected with the fixed plate 31, the movable clamp plate 33 and the annular rotating groove 312 are slidingly connected, the output end of the rotary motor 32 and the movable clamp plate 33 are tightly connected, the surface of the movable clamp plate 33 facing the ground is provided with two pushing grooves, the pushing grooves of the movable clamp plate 33 are symmetrically arranged, the pushing hydraulic cylinder 34 is provided with two, the two pushing hydraulic cylinders 34 are connected with the movable clamp plate 33, the two pushing hydraulic cylinders 34 are respectively arranged in the two pushing grooves, the fixed end of the pushing hydraulic cylinder 34 and the wall surface of the pushing groove are tightly connected, the fixed ends of the two pushing hydraulic cylinders 34 are close to the center of the movable clamp plate 33, the driving rod 35 is provided with two, the two driving rods 35 are in the shape of "T", the two driving rods 35 are tightly connected with the two pushing hydraulic cylinders 34 respectively, the output end of the pushing hydraulic cylinder 34 and one end of the driving rod 35 are tightly connected, the driving rod 35 and the pushing groove are slidingly connected, the movable clamp plate 33 is connected with the detection positioning mechanism 5, the hoisting mechanism 3 further comprises a telescopic rod 36 and a bed plate grabbing clamp 37, the telescopic rod 36 is provided with four, the four telescopic rods 36 are symmetrically arranged on the movable clamp plate 33, the telescopic rod 36 and the movable clamp plate 33 are tightly connected, the four telescopic rods 36 are averagely divided into two groups, the two groups of telescopic rods 36 are tightly connected with the two ends of the two driving rods 35 respectively, the bed plate grabbing clamp 37 is provided with two, the bed plate grabbing clamp 37 is in the shape of "T", one end of one bed plate grabbing clamp 37 and one group of telescopic rods 36 are tightly connected, the surface where the other end of the bed plate grabbing clamp 37 is located is parallel to the ground.

[0036] In the lifting mechanism 3, the mechanism is used for lifting the ballastless track slab 1, the fixed plate 31 and the driving support 22 are tightly connected, as the basis of the whole lifting mechanism 3, the fixed plate 31 is also provided with a rectangular groove 311, the rotary motor 32 is placed in the rectangular groove 311, the output end of the rotary motor 32 faces the ground, the side of the fixed plate 31 facing the ground is also provided with an annular rotating groove 312, the movable clamp plate 33 and the annular rotating groove 312 are slidingly connected, clamped in the annular rotating groove 312, the center of the movable clamp plate 33 and the output end of the rotary motor 32 are tightly connected, the rotary motor 32 drives the movable clamp plate 33 to rotate after starting, the movable clamp plate 33 slides in the annular rotating groove 312, the fixed plate 31 supports the movable clamp plate 33 to a certain extent, a visual probe is also installed on the movable clamp plate 33, when the lifting mechanism 3 turns to the place where the ballastless track slab 1 is to be placed, whether the side of the movable clamp plate 33 and the last placed ballastless track slab 1 are in a straight line can be detected through the visual probe, the pushing hydraulic cylinder 34 is placed in the pushing groove, the output end of the pushing hydraulic cylinder 34 and the driving rod 35 are tightly connected, the pushing hydraulic cylinder 34 drives the driving rod 35 to move in the pushing groove after starting, the two ends of the pushing groove are tightly connected with the telescopic rods 36, the other ends of the two telescopic rods 36 are tightly connected through the slab clamping 37, after the device starts, the pushing hydraulic cylinder 34 pushes the driving rod 35 away, so that the distance between the two slab clamping 37 becomes larger, the telescopic rod 36 is elongated to the bottom of a ballastless track slab 1 to be placed, then the pushing hydraulic cylinder 34 pulls back, so that the distance between the two slab clamping 37 becomes smaller, until the slab clamping 37 is clamped to the ballastless track slab 1 and cannot be further reduced, the pushing hydraulic cylinder 34 stops driving, the telescopic rod 36 retracts, lifts the ballastless track slab 1, after turning to the area to be placed, the distance needs to be adjusted, in the process of adjustment, the visual probe is always started, whether the side of the movable clamp plate 33 and the last placed ballastless track slab 1 are in a straight line is detected, to prevent subsequent misplacement, after reaching the appropriate position, the telescopic rod 36 is elongated, so that the bottom of the slab clamping 37 contacts the ground, the pushing hydraulic cylinder 34 is started, so that the distance between the two slab clamping 37 becomes larger, the slab clamping 37 and the ballastless track slab 1 are separated, then the telescopic rod 36 retracts, completing the placement of a ballastless track slab 1.

[0037] The orientation mechanism 4 includes an orientation track 41, a driven roller 42 and a servo motor, the orientation track 41 is laid on the ground, the orientation track 41 is provided with two, the two orientation tracks 41 are placed in parallel, the track of the orientation track 41 is the path of the ballastless track slab 1 to be laid, the orientation track 41 is provided with a moving groove 411, the track of the moving groove 411 is consistent with the track of the orientation track 41, the driven roller 42 and the bottom of the driving shell 21 are tightly connected through a rotating rod, the driven roller 42 is not less than four, the driven roller 42 is connected with the orientation track 41, the driven roller 42 and the moving groove 411 are engaged, the servo motor drives the driven roller 42.

[0038] In the orientation mechanism 4, the mechanism is used to define the path of the trackless bed plate 1, the orientation track 41 is parallel to the path of the trackless bed plate 1 to be placed, the orientation track 41 is provided with a moving groove 411, the driven roller 42 is engaged with the moving groove 411, the driven roller 42 and the driving shell 21 are connected through a rotating rod, and the driven roller 42 is driven to move along the orientation track 41 through a servo motor, so that the driven roller 42 carries the driving shell 21 to move along the orientation track 41, and the servo motor is started after the device is started, the driven roller 42 carries the driving shell 21 to move along the orientation track 41, and the trackless bed plate 1 is placed.

[0039] The detection positioning mechanism 5 further comprises a movable baffle 54, a magnetic block 55 and a reset spring 56, one end of the movable baffle 54 is fixedly connected with the sliding rheostat 52, the movable baffle 54 extends in the vertical direction towards the sliding rheostat 52, the movable baffle 54 is made of metal, the magnetic block 55 is fixedly connected to one end of the movable baffle 33 close to the last placed trackless bed plate 1, the magnetic block 55 is energized through the connecting wire and the power supply, and the reset spring 56 is fixedly connected between the fixed baffle 53 and the movable baffle 54.

[0040] In the detection positioning mechanism 5, the mechanism detects the distance between the gap between the to-be-placed ballastless track slab 1 and the already-placed ballastless track slab 1, after the driving housing 21 moves to a certain position, the driving hydraulic cylinder drives the installation base 51 to fall, and the fixed baffle 53 fastened to the sliding rheostat 52 is in close contact with one side of the last placed ballastless track slab 1, then the telescopic rod 36 is elongated, so that the bedplate grab 37 falls with the ballastless track slab 1, the telescopic rod 36 stops elongating when it is not completely fallen, at this time the distance from the bedplate grab 37 to the ground is less than the height of a ballastless track slab 1, and the bedplate grab 37 is close to the last placed ballastless track slab 1, the magnetic block 55 fastened to the bedplate grab 37 is magnetized after being electrified, and the movable baffle 54 fastened to the slide of the sliding rheostat 52 is attracted, and moves with the slide to the direction of the magnetic block 55, until the movable baffle 54 is in close contact with the magnetic block 55, then the driving motor 24 drives the rotating support disc 23 to rotate to enlarge the distance, the rotary motor 32 continuously adjusts the angle of placement under the detection of the visual probe, and keeps the placement in a straight line with the last placed ballastless track slab 1, in the process of movement, because the movable baffle 54 is always in close contact with the magnetic block 55, the movable baffle 54 is moved together, the resistance value on the sliding rheostat 52 gradually decreases, when reaching the critical point, the current can pass through, at this time the driving motor 24 and the rotary motor 32 stop driving, the magnetic block 55 is de-energized and loses magnetism, the movable baffle 54 is no longer adsorbed to the magnetic block 55, the driving hydraulic cylinder lifts the installation base 51, the telescopic rod 36 is elongated, so that the bedplate grab 37 is in close contact with the ground, the push hydraulic cylinder 34 is started, so that the distance between the two bedplate grabs 37 is increased, the bedplate grab 37 is separated from the ballastless track slab 1, then the telescopic rod 36 is retracted, and the placement of a ballastless track slab 1 is completed.

[0041] The working principle of the present application is as follows: after starting, the driving motor 24 drives the rotating support disc 23 to rotate, the hoisting mechanism 3 clamps the to-be-placed ballastless track slab 1, after completion, the driving motor 24 drives the rotating support disc 23 to rotate back, so that the hoisting mechanism 3 faces the place to be placed, the servo motor is started, the driven roller 42 drives the driving shell 21 to move along the directional track 41, stops after moving to the appropriate position, the driving hydraulic cylinder drives the installation base 51 to fall, and the fixed baffle 53 fastened to the sliding rheostat 52 is attached to one side of the last placed ballastless track slab 1, then the telescopic rod 36 is elongated, so that the slab clamp 37 falls with the ballastless track slab 1, the telescopic rod 36 stops elongating when not completely falling, at this time, the distance from the slab clamp 37 to the ground is less than the height of one ballastless track slab 1, and the distance from the slab clamp 37 to the last placed ballastless track slab 1 is relatively close, the magnetic block 55 fastened to the slab clamp 37 is magnetized after being electrified, the movable baffle 54 fastened to the sliding piece of the sliding rheostat 52 is attracted, and moves with the sliding piece to the direction of the magnetic block 55 until the movable baffle 54 is attached to the magnetic block 55, then the driving motor 24 drives the rotating support disc 23 to rotate to expand the distance, the rotating motor 32 continuously adjusts the angle of placement under the detection of the visual probe, so that the placement is kept in a straight line with the last placed ballastless track slab 1, in the moving process, because the movable baffle 54 is always attached to the magnetic block 55, the movable baffle 54 is moved together, the resistance value on the sliding rheostat 52 gradually decreases, when reaching the critical point, the current can pass, at this time, the driving motor 24 and the rotating motor 32 stop driving, the magnetic block 55 is de-energized and loses magnetism, the movable baffle 54 is no longer adsorbed to the magnetic block 55, the driving hydraulic cylinder lifts the installation base 51, the telescopic rod 36 is elongated so that the slab clamp 37 is attached to the ground, the driving hydraulic cylinder 34 is started so that the distance between the two slab clamps 37 becomes larger, the slab clamp 37 is separated from the ballastless track slab 1, then the telescopic rod 36 is retracted, and the placement of one ballastless track slab 1 is completed.

[0042] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and it is intended to encompass all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A limiting device for construction of a ballastless track slab, the limiting device limiting a ballastless track slab (1), characterized in that: The limiting device includes a main body mechanism (2), a hoisting mechanism (3), a directional mechanism (4) and a detection positioning mechanism (5), the main body mechanism (2) and the hoisting mechanism (3) are connected, the main body mechanism (2) and the directional mechanism (4) are connected, the main body mechanism (2) and the detection positioning mechanism (5) are connected, and the hoisting mechanism (3) and the detection positioning mechanism (5) are connected; The main body mechanism (2) includes a driving shell (21), a driving support (22) and a rotating support disc (23), the driving shell (21) is provided with a circular rotating groove (212), the driving shell (21) and the rotating support disc (23) are rotationally connected through the circular rotating groove (212), the driving support (22) and the rotating support disc (23) are fixedly connected, and the driving shell (21) and the detection positioning mechanism (5) are connected; The detection positioning mechanism (5) includes a mounting base (51), a sliding rheostat (52) and a fixed baffle (53), the mounting base (51) and the driving shell (21) are slidingly connected, the mounting base (51) is fixedly connected with a driving hydraulic cylinder at the bottom, the bottom surface of the driving shell (21) and the fixed end of the driving hydraulic cylinder are fixedly connected, the mounting base (51) is arranged on the side of the driving shell (21) facing the placed ballastless track bed plate (1), the sliding rheostat (52) and the mounting base (51) are fixedly connected, one end of the sliding rheostat (52) and the fixed baffle (53) are fixedly connected, and the fixed baffle (53) extends in the direction perpendicular to the sliding rheostat (52); The hoisting mechanism (3) further includes a visual probe and a movable clamping plate (33), and the visual probe and the movable clamping plate (33) are fixedly connected; The directional mechanism (4) includes a directional track (41), a driven roller (42) and a servo motor, the directional track (41) is laid on the ground, the directional track (41) is provided with two tracks, the two tracks are arranged in parallel, and the track of the directional track (41) is the path of the ballastless track bed plate (1) to be laid; The detection positioning mechanism (5) further includes a movable baffle (54), a magnetic block (55) and a reset spring (56), one end of the movable baffle (54) and the sliding rheostat (52) are fixedly connected, the movable baffle (54) extends in the direction perpendicular to the sliding rheostat (52), the movable baffle (54) is made of metal, one end of the movable clamping plate (33) close to the placed ballastless track bed plate (1) is fixedly connected with the magnetic block (55), the magnetic block (55) is energized through the connecting wire and the power supply, and the reset spring (56) is fixedly connected between the fixed baffle (53) and the movable baffle (54).

2. The limiting device for construction of a ballastless track slab according to claim 1, characterized in that: The main body mechanism (2) further comprises a driving motor (24) and a support rod (25), the driving shell (21) is provided with a mounting groove (211), the mounting groove (211) and the circular rotating groove (212) are communicated, the driving motor (24) is connected with the driving shell (21), the driving motor (24) is fixedly connected with the mounting groove (211), the output end of the driving motor (24) is fixedly connected with the rotating support disc (23), one end of the support rod (25) is fixedly connected with the rotating support disc (23), the end of the support rod (25) away from the rotating support disc (23) is fixedly connected with the driving support (22), the driving shell (21) is connected with the orientation mechanism (4), and the driving support (22) is connected with the hoisting mechanism (3).

3. The limiting device for construction of a ballastless track slab according to claim 1, characterized in that: The hoisting mechanism (3) comprises a fixed plate (31) and a rotating motor (32), the fixed plate (31) is fixedly connected with the driving support (22), the fixed plate (31) is provided with a rectangular groove (311), the rotating motor (32) is fixedly connected with the rectangular groove (311), and the output end of the rotating motor (32) faces the ground.

4. The limiting device for construction of a ballastless track slab according to claim 3, characterized in that: The visual probe detection end faces the ground, the movable clamping plate (33) is provided with an annular protrusion, the movable clamping plate (33) is connected with the fixed plate (31), the movable clamping plate (33) is slidably connected with the annular rotating groove (312), the output end of the rotating motor (32) is fixedly connected with the movable clamping plate (33), and two pushing grooves are arranged on the surface of the movable clamping plate (33) facing the ground.

5. The limiting device for construction of a ballastless track slab according to claim 4, characterized in that: The hoisting mechanism (3) further comprises a pushing hydraulic cylinder (34) and a driving rod (35), the pushing hydraulic cylinder (34) is provided with two, the two pushing hydraulic cylinders (34) are connected with the movable clamping plate (33), the two pushing hydraulic cylinders (34) are respectively arranged in the two pushing grooves, the fixed end of the pushing hydraulic cylinder (34) is fixedly connected with the wall surface of the pushing groove, and the fixed ends of the two pushing hydraulic cylinders (34) are close to the center of the movable clamping plate (33), the driving rod (35) is provided with two, the two driving rods (35) are in the shape of "T", the two driving rods (35) are fixedly connected with the two pushing hydraulic cylinders (34) respectively, the output end of the pushing hydraulic cylinder (34) is fixedly connected with one end of the driving rod (35), the driving rod (35) is slidably connected with the pushing groove, and the movable clamping plate (33) is connected with the detection positioning mechanism (5).

6. The limiting device for construction of a ballastless track slab according to claim 5, characterized in that: The lifting mechanism (3) further comprises telescopic rods (36) and bed plate clamps (37), the telescopic rods (36) are four, the four telescopic rods (36) are symmetrically arranged on the movable clamping plate (33), the telescopic rods (36) and the movable clamping plate (33) are tightly connected, the four telescopic rods (36) are evenly divided into two groups, the two groups of telescopic rods (36) are tightly connected with the two ends of the two drive rods (35) respectively, the bed plate clamps (37) are two, the bed plate clamps (37) are "T" shaped, one end of the bed plate clamps (37) is tightly connected with one group of telescopic rods (36), and the other end of the bed plate clamps (37) is parallel to the ground.

7. The limiting device for construction of a ballastless track slab according to claim 1, characterized in that: The directional track (41) is provided with a moving groove (411), the track of the moving groove (411) is consistent with the track of the directional track (41), the driven roller (42) and the bottom of the drive shell (21) are rotationally connected through a rotating rod, the driven roller (42) is not less than four, the driven roller (42) is connected with the directional track (41), the driven roller (42) is engaged with the moving groove (411), and the servo motor drives the driven roller (42).

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