Construction method for grouting and hardening ballastless track of hardened track bed

Abstract

The invention discloses a construction method for a hardened ballast bed grouting hardened ballastless track, which comprises the following steps of: dividing the track into a plurality of construction sections, and constructing the construction sections one by one or synchronously; during construction, the sleepers are detached; steel bars are arranged in the ballast track bed; drilling is conducted on the ballast track bed; a top formwork and side formworks are installed on the upper surface and the two sides of the ballast track bed correspondingly, and a grouting space is formed among the hardened layer, the top formwork and the two side formworks; a grouting pipe is inserted into the drilled hole, the bottom of the grouting pipe is inserted into the bottom of the hole, and grouting operation is conducted; and after grouting is completed and the upper portion of the hardened layer of the ballast track bed is completely hardened, the top formwork and the side formworks are removed, the sleepers are assembled, and the two steel rails are fixed to the sleepers. On the basis of the original ballast track bed, the ballast track bed is converted into the ballastless track bed, the construction work amount is reduced, the construction period is shortened, and the material cost is reduced. The method is suitable for the technical field of track construction.

Description

Technical Field

[0001] The invention belongs to the technical field of track construction, and in particular relates to a construction method for grouting hardened ballastless track on a slab-bonded track bed. Background Art

[0002] At present, during the long-term use of the ballasted track bed, due to the existence of certain gaps between the gravels of the ballasted track bed, when the gravels are subjected to external forces, they collide with each other and produce debris, and small-sized debris from the outside world enters the gaps. As time goes by, these small-sized gravels gradually move downward under the influence of precipitation, and eventually accumulate at the bottom of the ballasted track bed and form a compacted layer, thereby affecting the buffering capacity of the entire ballasted track bed. In order to restore the performance of the ballasted track bed, in general, a cleaning machine is used to clean the ballasted track bed, remove the compacted layer and remove small-sized gravels. In addition, since the operating trains of some track lines have been replaced with high-speed trains or EMUs, the ballasted track bed at the track line needs to be replaced with a ballastless track bed. Conventional operations are to remove the sleepers and rails, then remove the ballasted track bed, and then cast the ballastless track bed according to the construction requirements of the ballastless track bed, and finally install the sleepers and rails. This construction method has unavoidable disadvantages, including a large amount of construction work, a long construction period, and extremely high material costs. Summary of the invention

[0003] The invention provides a construction method for grouting hardened ballastless track on a compacted ballast bed, which converts the ballast bed into a ballastless track based on the original ballast bed, reduces the construction workload, shortens the construction period, and reduces material costs.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A construction method for grouting hardened ballastless track on a slab-bonded ballast bed comprises the following steps: Step 1. Divide the track into multiple construction sections evenly along the length direction of the track, and construct the construction sections one by one or simultaneously; Step 2. When the construction section is being constructed, the sleepers of the construction section are dismantled; Step 3. Arrange the steel bars in the ballast bed at predetermined intervals, and insert the lower end of each steel bar into the slab layer of the ballast bed; Step 4. drilling holes in the ballast track bed, with the lower ends of the holes extending to the upper end of the compacted layer; Step 5. Install the top formwork and the side formwork on the upper surface and both sides of the ballast bed, respectively, and form a grouting space between the slab layer, the top formwork and the two side formworks; Step 6. Insert the grouting pipe into the drilled hole through the top template, and insert the bottom of the grouting pipe to the bottom of the hole, and then perform grouting operation; Step 7. After the grouting is completed and the upper part of the ballast track bed slab is completely hardened, the top formwork and side formwork are removed, the sleepers are reinstalled, and the two rails are fixed to the sleepers.

[0005] Furthermore, in step 2, after the sleepers are removed, a plurality of rail support mechanisms are arranged at intervals along the length direction of the track, and each rail support mechanism supports two rails.

[0006] Furthermore, the rail support mechanism includes a transverse suspension beam spanning above the rails, with vertical support plates respectively constructed at both ends of the transverse suspension beam, a fixed seat constructed at the lower end of each vertical support plate, each fixed seat is anchored to the outer side of the track bed via a plurality of anchoring screws, a U-shaped buckle seat is provided below each rail, the U-shaped buckle seat is buckled onto the rail by the lower end of the rail, and connecting plates are respectively constructed on both sides of the upper end of the U-shaped buckle seat, and each connecting plate is detachably connected to the transverse suspension beam via a plurality of fastening bolts.

[0007] Furthermore, in step 3, step 4 and step 6, multiple steel bars or multiple drill rods or multiple grouting pipes are installed at the lower part of the downward pressure type power device. When the steel bars or grouting pipes are inserted downward, the downward pressure type power device is controlled to move downward, and the steel bars are inserted into the ballasted track bed or the grouting pipes are inserted into the drilled holes. When drilling, the downward pressure type power device is controlled to move downward while driving each drill rod to rotate, so that these drill rods synchronously perform drilling operations on the ballasted track bed.

[0008] Furthermore, the downward pressure power device includes a plurality of assembly components installed on an assembly seat at intervals along the length direction of the track, these assembly components are connected via a transmission mechanism, and the transmission mechanism is constructed between these assembly components, the upper ends of the steel bars or drill rods or grouting pipes are installed on the corresponding assembly components, a vibrator is installed on the assembly seat, and at least one vertical hydraulic cylinder is installed on the assembly seat, and the upper end of the vertical hydraulic cylinder is connected to the body of the traveling vehicle.

[0009] Furthermore, the assembly component includes two sub-seat bodies that are relatively arranged and detachably connected together, and an assembly half-cavity is respectively constructed at one end of the two sub-seat bodies that are close to each other. When the two sub-seat bodies are interlocked and connected together, the two assembly half-cavities are spliced ​​together to form a complete assembly cavity, and the assembly shaft tube is rotatably assembled in the assembly cavity, and the upper end of the steel bar or drill rod or grouting pipe is assembled in the assembly shaft tube.

[0010] Furthermore, the transmission mechanism includes a transmission worm rotatably connected to one of the sub-seat bodies, a transmission worm wheel is coaxially assembled on the lower part of the assembly shaft tube, the transmission worm wheel is transmission-connected to the transmission worm, and the transmission worm extends in the longitudinal direction of the track, and a plug-in rod and a plug-in tube extending in the longitudinal direction of the track are detachably connected to both ends of the transmission worm, a limiting strip extending in its axial direction is constructed on the outer peripheral wall of the plug-in rod, and a limiting groove extending in its axial direction is constructed on the inner peripheral wall of the plug-in tube, the corresponding plug-in rods between adjacent transmission worms are inserted into the plug-in tube, and the limiting strips are assembled in the limiting grooves, and the transmission worm located at the end is driven to drive the other transmission worms to rotate synchronously; two guide rails are constructed on the assembly seat, and guide grooves are respectively opened at the ends of the two sub-seat bodies away from each other, and each sub-seat body is assembled on the corresponding guide rail through the guide groove.

[0011] Furthermore, in step 7, and before installing the sleeper, the shoe-type rubber buffer is opened using a shoe-holding mechanism, and then the shoe-type rubber buffer is mounted on the sleeper so that the peripheral walls and bottom walls around the sleeper are covered by the shoe-type rubber buffer. Thereafter, the sleeper is installed on the hardened ballastless track.

[0012] Furthermore, the support shoe mechanism includes two transverse rods whose ends close to each other are respectively inserted into the transverse tube by two ends of the transverse tube, and a connecting spring is arranged in the transverse tube, and the two ends of the connecting spring are respectively fixedly connected to the ends of the two transverse rods close to each other, and a driving chamber is formed in the transverse tube, and the driving chamber is connected to the intake and exhaust joint pipe constructed on the transverse tube, and an adapter seat is constructed on the transverse tube, and the adapter seat is connected to the cylinder rod of the vertical cylinder; the ends of the two transverse rods that are far away from each other are respectively detachably connected with an outward-stretching support assembly.

[0013] Furthermore, the outward-stretched support assembly includes a vertical plate which is detachably connected to the transverse rod at the upper part, an adapter plate is fixed to the lower end of the vertical plate, two connecting shafts are symmetrically rotatably connected to the adapter plate, each of the connecting shafts is fixedly connected to a first swing arm, a torsion spring is mounted outside the connecting shaft, two ends of the torsion spring are respectively fixedly connected to the adapter plate and the first swing arm, a connecting rod extending downward in a vertical direction is connected to the end of the first swing arm away from the connecting shaft, a second swing arm is connected to the lower end of the connecting rod, the second swing arm extends toward the boot-type rubber buffer, and an external support rod extending upward in a vertical direction is detachably connected to the end of the second swing arm close to the boot-type rubber buffer, the external support rod extends into the boot-type rubber buffer, and is supported externally at the corresponding inner corner of the boot-type rubber buffer.

[0014] Since the present invention adopts the above-mentioned structure, compared with the prior art, the technical progress achieved is that: the present invention does not need to remove the compacted layer of the ballasted track bed, and uses the compacted layer as the bottom foundation of the ballastless track bed. Steel bars are inserted at intervals into the part above the compacted layer of the ballasted track bed to provide skeleton support for the subsequent grouting and compaction. The lower end of the steel bar can be inserted into the compacted layer as needed, so that the compacted layer and the hardened layer hardened by grouting on its upper part are connected as one. After the steel bars are laid, the ballasted track bed is drilled. The purpose of drilling is to install the grouting pipe later, so that the grouting pipe can efficiently perform grouting operations on the upper part of the compacted layer in the ballasted track bed, and the lower end of the drilled hole extends into the compacted layer, so that the hardened layer after grouting and hardening can be more firmly combined with the compacted layer. Afterwards, the top formwork and the side formwork are installed on the upper surface and both sides of the ballasted track bed, and then the grouting pipe is inserted into the hole, and the hardened slurry is injected into the grouting pipe according to a predetermined pressure. The hardened slurry enters the ballasted track bed through the grouting pipe, and gradually spreads along the gaps between the gravels, so that the gravel gaps in the area where the grouting pipe acts are filled. After the hardened slurry fully fills the grouting space, the grouting pipe is withdrawn. After the ballasted track bed is completely hardened to become a ballastless track bed, the sleepers are installed on the ballastless track bed, and finally the sleepers are connected and fixed to the rails with fasteners, thereby achieving the purpose of completely converting the ballasted track bed into a ballastless track bed. In summary, the present invention converts the ballasted track bed into a ballastless track bed based on the original ballasted track bed, reduces the construction workload, shortens the construction period, and reduces material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached picture: Figure 1 is a process flow chart of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a rail support mechanism supporting two rails according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of the rail support mechanism supporting two rails at another angle according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a shoe-type rubber buffer member opened by a shoe-holding mechanism according to an embodiment of the present invention; Figure 5 It is a schematic structural diagram of a boot-type rubber buffer according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a shoe support mechanism according to an embodiment of the present invention; Figure 7It is an axial structural cross-sectional view of the connection between the transverse tube, the connecting spring and the two transverse rods in the shoe support mechanism of the embodiment of the present invention; Figure 8 It is a schematic structural diagram of an outward-stretching support assembly in a shoe support mechanism according to an embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a downward pressure power device according to an embodiment of the present invention; Fig.10 It is a structural schematic diagram of another angle of the downward pressure type power device according to an embodiment of the present invention; Fig.11 It is a structural schematic diagram of the connection between the assembly seat and the assembly component in the downward pressure type power device according to an embodiment of the present invention; Fig.12 It is a schematic diagram of the structure after the assembly components in the downward pressure type power device according to an embodiment of the present invention are disassembled; Fig.13 It is a structural schematic diagram of a downward pressure power device connected to a plurality of steel bars according to an embodiment of the present invention; Fig.14 It is a schematic diagram of the structure after the assembly components and the steel bars are separated in the downward pressure type power device according to the embodiment of the present invention; Fig.15 for Fig.14 A schematic diagram of the structure from another angle of the structure shown; Fig.16 It is a structural schematic diagram of a downward pressure power device connected to a plurality of drill rods according to an embodiment of the present invention; Fig.17 This is an axial structural cross-sectional view of the connection between the downward pressure type power device and the drill pipe according to an embodiment of the present invention; Fig.18 It is a structural schematic diagram of the connection between the assembly component and the drill rod in the downward pressure type power device according to an embodiment of the present invention; Fig.19 It is a structural schematic diagram of the connection between the downward pressure type power device and the grouting system according to an embodiment of the present invention; Fig. 20 It is a structural schematic diagram of a grouting system according to an embodiment of the present invention; Fig.21 It is an axial structural cross-sectional view of a single grouting pipe in the grouting system of an embodiment of the present invention.

[0017] Labeled parts: 100-rail support mechanism, 101-transverse suspension beam, 102-vertical support plate, 103-fixed seat, 104-U-shaped buckle seat, 105-connecting plate, 200-rail, 300-support shoe mechanism, 301-transverse tube, 302-adapter seat, 303-vertical cylinder, 304-intake and exhaust joint pipe, 305-drive chamber, 306-connecting spring, 307-transverse rod, 308-vertical plate, 309-adapter plate, 310-first swing arm, 311-connecting shaft , 312-torsion spring, 313-transfer rod, 314-second swing arm, 315-outer support rod, 316-threaded connector, 317-fastening nut, 400-boot-type rubber buffer, 401-boot body, 402-side buffer wall, 403-end buffer wall, 404-bottom buffer wall, 500-assembly seat, 501-longitudinal assembly beam, 502-guide rail, 503-fixed plate, 600-assembly component, 601-sub-seat body, 602-assembly half cavity, 603-guide groove, 60 4-fixing ear, 605-connecting ear, 606-assembly shaft tube, 607-bearing, 608-assembly channel, 609-card slot, 610-first threaded hole, 611-metal joint, 612-plug hole, 613-second threaded hole, 614-electromagnet, 615-first connection cover, 616-threaded head, 617-adapter, 618-third threaded hole, 619-card strip, 620-second connection cover, 621-connection hole, 700-vertical hydraulic cylinder, 80 0-vibrator, 900-transmission mechanism, 901-transmission worm gear, 902-transmission worm, 903-plug-in rod, 904-limiting strip, 905-plug-in tube, 906-limiting groove, 1000-rebar, 1100-drill rod, 1101-rod-shaped body, 1102-spiral blade, 1200-grouting system, 1201-grouting pipe, 1202-grouting hole, 1203-insertion tip, 1204-bypass tube, 1205-grouting main pipe, 1206-distribution joint. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] The invention discloses a construction method for grouting hardened ballastless track of a slab-bonded ballast bed. Figure 1-21 As shown, A construction method for grouting hardened ballastless track on a slab-bonded ballast bed comprises the following steps: Step 1. Divide the track into multiple construction sections evenly along the length direction of the track, and construct the construction sections one by one or simultaneously; Step 2. When the construction section is being constructed, the sleepers of the construction section are dismantled; Step 3. Arrange the steel bars 1000 in the ballast track bed at predetermined intervals, and insert the lower end of each steel bar 1000 into the slab layer of the ballast track bed; Step 4. drilling holes in the ballast track bed, with the lower ends of the holes extending to the upper end of the compacted layer; Step 5. Install the top formwork and the side formwork on the upper surface and both sides of the ballast bed, respectively, and form a grouting space between the slab layer, the top formwork and the two side formworks; Step 6. Insert the grouting pipe 1201 into the drilled hole through the top template, and insert the bottom of the grouting pipe 1201 to the bottom of the hole, and then perform grouting operation; Step 7. After the grouting is completed and the upper part of the slab layer of the ballasted track bed is completely hardened, the top formwork and the side formwork are removed, the sleepers are reinstalled, and the two rails 200 are fixed to the sleepers.

[0020] The working principle and advantages of the present invention are: the present invention does not need to remove the compacted layer of the ballasted track bed, and uses the compacted layer as the bottom foundation of the ballastless track bed. The steel bars 1000 are inserted at intervals above the compacted layer of the ballasted track bed to provide a skeleton support for the subsequent grouting compaction. The lower end of the steel bar 1000 can be inserted into the compacted layer according to the needs, so that the compacted layer and the hardened layer hardened by grouting on the upper part are connected as a whole. After the steel bar 1000 is laid out, the ballasted track bed is drilled. The purpose of drilling is to install the grouting pipe 1201 later, so that the grouting pipe 1201 can efficiently perform grouting operations on the upper part of the compacted layer in the ballasted track bed, and the lower end of the drilled hole extends into the compacted layer, so that the hardened layer after grouting hardening can be more firmly combined with the compacted layer. Afterwards, the top formwork and the side formwork are installed on the upper surface and both sides of the ballasted track bed, and then the grouting pipe 1201 is inserted into the hole, and the hardened slurry is injected into the grouting pipe 1201 according to a predetermined pressure. The hardened slurry enters the ballasted track bed through the grouting pipe 1201, and gradually spreads along the gaps between the gravels, so that the gravel gaps in the area where the grouting pipe 1201 acts are filled. After the hardened slurry fully fills the grouting space, the grouting pipe 1201 is withdrawn. After the ballasted track bed is completely hardened to become a ballastless track bed, the sleepers are installed on the ballastless track bed, and finally the sleepers are connected and fixed to the rails 200 using fasteners, thereby achieving the purpose of completely converting the ballasted track bed into a ballastless track bed. In summary, the present invention converts the ballasted track bed into a ballastless track bed based on the original ballasted track bed, reduces the construction workload, shortens the construction period, and reduces the material cost.

[0021] As a preferred embodiment of the present invention, in step 2, after the sleepers are removed, multiple rail support mechanisms 100 are arranged at intervals along the length direction of the track, and each rail support mechanism 100 supports two rails 200 to prevent the rail 200 from sagging due to excessive length under the action of gravity. The specific structure of the rail support mechanism 100 is as follows: Figure 2 , 3 As shown, the rail support mechanism 100 includes a transverse suspension beam 101 and two U-shaped buckle seats 104. The transverse suspension beam 101 spans above the rails 200. Vertical support plates 102 are respectively constructed at both ends of the transverse suspension beam 101. A fixing seat 103 is constructed at the lower end of each vertical support plate 102. Each fixing seat 103 is anchored to the outer side of the track bed by a plurality of anchoring screws. In this way, the transverse suspension beam 101 and the two vertical support plates 102 form a U-shaped structure and span two rails 200. Afterwards, the two U-shaped buckle seats 104 are respectively arranged under the two rails 200. Each U-shaped buckle seat 104 is buckled on the rail 200 by the lower end of the rail 200, and connecting plates 105 are respectively constructed on both sides of the upper end of the U-shaped buckle seat 104. Each connecting plate 105 is detachably connected to the transverse suspension beam 101 by a plurality of fastening bolts, thereby achieving the purpose of hanging the rail 200 by the U-shaped buckle seat 104. Furthermore, since the transverse hanging beam 101 spans over the rail 200 , it is easier to disassemble and assemble than when the transverse hanging beam 101 is located below the rail 200 to support the rail 200 .

[0022] As a preferred embodiment of the present invention, Fig.13 , 16 As shown in FIG. 19 , in step 3, step 4 and step 6, a plurality of steel bars 1000 or a plurality of drill rods 1100 or a plurality of grouting pipes 1201 are installed at the lower part of the downward pressure type power device. When the steel bars 1000 or the grouting pipes 1201 are inserted downward, the downward pressure type power device is controlled to move downward, and the steel bars 1000 are inserted into the ballasted track bed or the grouting pipes 1201 are inserted into the drilled holes. When drilling, the downward pressure type power device is controlled to move downward while driving each drill rod 1100 to rotate, so that these drill rods 1100 perform drilling operations on the ballasted track bed synchronously. This embodiment can replace manual labor to carry out batch insertion of steel bars 1000, batch drilling of holes, and batch installation and positioning of grouting pipes 1201 through a downward pressure power device. Compared with manual operations or the use of equipment to insert single steel bars 1000, drill holes one by one, and install and grout grouting pipes 1201 separately, it improves construction efficiency and ensures construction quality.

[0023] As a preferred embodiment of the present invention, Fig. 9 , 10As shown, the downward pressure power device includes an assembly seat 500, a transmission mechanism 900, a vibrator 800 and a plurality of assembly components 600. The plurality of assembly components 600 are installed on the assembly seat 500, and the assembly components 600 are arranged at intervals along the length direction of the track, and the assembly components 600 are connected by transmission through the transmission mechanism 900, and the transmission mechanism 900 is constructed between the assembly components 600. The upper ends of the steel bars 1000, the drill rods 1100 or the grouting pipes 1201 are installed on the corresponding assembly components 600, and the vibrator 800 is installed on the assembly seat 500. In this embodiment, at least one vertical hydraulic oil cylinder 700 is installed on the assembly seat 500, and the upper end of the vertical hydraulic oil cylinder 700 is connected to the body of the traveling vehicle. The working principle and advantages of this embodiment are: this embodiment can adjust the spacing between the assembly components 600, thereby adjusting the density of the steel bars 1000, and adjusting the spacing of the holes drilled, so that after the adjacent grouting pipes 1201 are grouted, they can cover the grouting area of ​​the target construction section to ensure the adequacy of the grouting. This embodiment can drive the transmission mechanism 900 to drive each assembly component 600 to drive the steel bars 1000 or the drill rod 1100 to rotate. Under the drive of the vertical hydraulic cylinder 700, the assembly seat 500 drives these assembly components 600 to gradually descend, so that the steel bars 1000 or the drill rod 1100 gradually extend into the ballasted track bed; and because the steel bars 1000 or the drill rod 1100 are always in a rotating state during the downward movement under the drive of the transmission mechanism 900, the efficiency of the steel bars 1000 or the drill rod 1100 extending into the ballasted track bed is improved. At the same time, in coordination with the vibration of the vibrator 800, when the lower end of the steel bar 1000 or the drill rod 1100 is in contact with the gravel, the vibrating steel bar 1000 or the drill rod 1100 can effectively vibrate and deflect the gravel, thereby improving the insertion or excavation efficiency.

[0024] As a preferred embodiment of the present invention, Fig.11 , 19 As shown, the assembly seat 500 includes two longitudinal assembly beams 501 arranged side by side, each longitudinal assembly beam 501 extends along the length direction of the ballast track bed, and guide rails 502 are respectively constructed on the end faces of the two longitudinal assembly beams 501 close to each other, and each guide rail 502 extends along the length direction of the longitudinal assembly beam 501 to the two ends of the longitudinal assembly beam 501. A plurality of fixing plates 503 are installed at intervals along the length direction of the longitudinal assembly beam 501 at the upper ends of the two longitudinal assembly beams 501, and the vertical hydraulic cylinder 700 and the vibrator 800 are respectively installed on the corresponding fixing plates 503.

[0025] As a preferred embodiment of the present invention, Fig.11 , 12As shown, the assembly component 600 includes an assembly shaft tube 606 and two sub-seat bodies 601. The two sub-seat bodies 601 are arranged opposite to each other and are detachably connected together. Specifically, each sub-seat body 601 is respectively provided with fixing ears 604 at both ends along the length direction of the assembly seat 500. The two sub-seat bodies 601 are assembled together, and the corresponding fixing ears 604 are connected together by connecting bolts. In this embodiment, an assembly half cavity 602 is constructed at one end of the two sub-seat bodies 601 close to each other. When the two sub-seat bodies 601 are interlocked and connected together, the two assembly half cavities 602 are spliced ​​together to form a complete assembly cavity. A bearing 607 is installed on the assembly shaft tube 606. The assembly shaft tube 606 is assembled in the assembly cavity and is rotatably connected to the two sub-seat bodies 601 through the bearing 607. The lower end of the assembly shaft tube 606 extends out of the assembly cavity. The interior of the assembly shaft tube 606 forms an assembly channel 608. The upper end of the steel bar 1000 or the drill rod 1100 or the grouting pipe 1201 is assembled in the assembly channel 608 of the assembly shaft tube 606. Specifically, before the steel bar 1000 is inserted, Figure 13-15 As shown, the metal joint 611 is installed in the assembly channel 608, a plug hole 612 is provided at the lower end of the metal joint 611, and a second threaded hole 613 is provided at the upper end of the metal joint 611. An electromagnet 614 is provided above the assembly shaft tube 606, and the electromagnet 614 is installed on the first connection cover 615, a threaded head 616 is installed at the lower end of the electromagnet 614, and a plurality of first threaded holes 610 are uniformly provided at the upper end of the assembly shaft tube 606 along its circumference. When the electromagnet 614 is assembled on the upper part of the assembly channel 608, the first connection cover 615 is attached to the upper end of the assembly shaft tube 606, and the first connection cover 615 is detachably connected to the assembly shaft tube 606 through a plurality of fixing bolts, the threaded head 616 is threadedly connected in the second threaded hole 613, and the upper end of the steel bar 1000 is assembled in the plug hole 612. When performing the operation of inserting the steel bar 1000, the electromagnet 614 is energized, so that the metal joint 611 has magnetic attraction. In this way, the metal joint 611 attracts the steel bar 1000, and then the insertion operation is performed. After the steel bar 1000 is inserted, the electromagnet 614 is powered off, and the vertical hydraulic cylinder 700 is controlled to drive the assembly seat 500 to move upward, so that the metal joint 611 is separated from the steel bar 1000. When performing the operation of inserting the steel bar 1000, the transmission mechanism 900 is controlled to drive the assembly shaft tube 606 to alternately move forward and reverse, so as to avoid the wire connecting the electromagnet 614 from being tangled. This embodiment quickly assembles the steel bar 1000 on the assembly component 600 by magnetic attraction, thereby improving the efficiency of the operation. Before drilling, if Figure 16-18As shown, two retaining grooves 609 are evenly provided along the circumference of the inner wall of the assembly shaft tube 606, and each retaining groove 609 extends along the axial direction of the assembly shaft tube 606 to the two ends of the assembly shaft tube 606. An adapter 617 is installed in the assembly channel 608, and two retaining strips 619 are constructed on the outer circumferential wall of the adapter 617. The two retaining strips 619 are respectively installed in the two retaining grooves 609, and a third threaded hole 618 is provided at the upper end of the adapter 617. A second connecting cover 620 is detachably installed on the upper end of the assembly shaft tube 606, and a connecting hole 621 is provided at the center position of the second connecting cover 620, and the connecting hole 621 is aligned with the third threaded hole 618. The lower end of the assembly bolt passes through the connecting hole 621 and is threadedly connected with the third threaded hole 618, thereby connecting and fixing the second connecting cover 620 to the assembly shaft tube 606. The upper end of the drill rod 1100 is fixed to the lower end of the adapter 617, and the two are generally connected together by a flange connection. The drill rod 1100 includes a vertically arranged rod-shaped body 1101, on which a spiral blade 1102 is constructed. The spiral blade 1102 spirally extends along the axis of the rod-shaped body 1101 to the upper and lower ends of the rod-shaped body 1101. Figure 19-21 As shown, the grouting system 1200 of this embodiment includes a plurality of grouting pipes 1201 as described above, and a plurality of grouting holes 1202 are arranged at intervals on the peripheral wall of each grouting pipe 1201. The lower end of the grouting pipe 1201 is configured with an insertion tip 1203, and the upper end of the grouting pipe 1201 is connected to the above-mentioned adapter 617 by means of a flange connection. A bypass pipe 1204 communicating with its inner cavity is configured at the upper part of the grouting pipe 1201, and a plurality of distribution joints 1206 are configured at intervals on the grouting main pipe 1205, each distribution joint 1206 is connected to the corresponding bypass pipe 1204, and the grouting main pipe 1205 is connected to the hardening slurry container through a delivery pump. In this embodiment, the ballasted track bed can be synchronously grouted through a plurality of grouting pipes 1201, thereby improving the efficiency of grouting and hardening.

[0026] As a preferred embodiment of the present invention, Fig.11 , 12As shown, the transmission mechanism 900 includes a transmission worm 902, a transmission worm wheel 901, a plug-in rod 903 and a plug-in tube 905. Among them, two connecting ears 605 are constructed on one of the two sub-seat bodies 601 of the assembly component 600, and the ends of both ends of the transmission worm 902 are respectively rotatably connected with the two connecting ears 605, so as to achieve the purpose of rotatably connecting the sub-seat body 601 with the transmission worm 902. The transmission worm wheel 901 of this embodiment is coaxially assembled at the lower part of the assembly shaft tube 606, and the transmission worm wheel 901 is transmission-connected with the transmission worm 902, and the transmission worm 902 extends in the longitudinal direction of the track, and the plug-in rod 903 and the plug-in tube 905 are respectively detachably connected to the two ends of the transmission worm 902, and the plug-in rod 903 and the plug-in tube 905 both extend in the longitudinal direction of the track. In this embodiment, a limiting strip 904 is constructed on the outer peripheral wall of the plug rod 903, and the limiting strip 904 extends along the axial direction of the plug rod 903. A limiting groove 906 is constructed on the inner peripheral wall of the plug tube 905, and the limiting groove 906 extends along the axial direction of the plug tube 905. The plug rods 903 corresponding to the adjacent transmission worms 902 are inserted into the plug tube 905, and the limiting strip 904 is assembled in the limiting groove 906. The transmission worm 902 at the end is driven to drive the other transmission worms 902 to rotate synchronously. In this embodiment, a guide groove 603 is respectively opened at one end of the two sub-seat bodies 601 away from each other, and each sub-seat body 601 is slidably assembled on the corresponding guide rail 502 through the guide groove 603. The working principle and advantages of this embodiment are: this embodiment drives the transmission worm 902 at the end to rotate by an electric motor or a hydraulic motor, so that the transmission worm 902 drives other transmission worms 902 to rotate through the inserted plug rod 903 and the plug tube 905, and then these transmission worms 902 drive all the transmission worm wheels 901 to rotate synchronously, so that these transmission worm wheels 901 drive the steel bar 1000 or the drill rod 1100 to rotate. In this embodiment, when adjusting the connection position of the assembly component 600 and the assembly seat 500, the length of the plug rod 903 inserted into the plug tube 905 is adjusted, and while ensuring the position adjustment of the assembly component 600, the purpose of synchronous rotation of all the transmission worms 902 is guaranteed.

[0027] As a preferred embodiment of the present invention, Figure 4As shown, in step 7, and before installing the sleeper, the shoe-type rubber buffer 400 is stretched open using the shoe-type rubber buffer mechanism 300, and then the shoe-type rubber buffer 400 is mounted on the sleeper so that the surrounding walls and the bottom wall of the sleeper are covered by the shoe-type rubber buffer 400, and then the sleeper is installed on the hardened ballastless track. This embodiment achieves the purpose of elastically connecting the sleeper and the ballastless track bed through the shoe-type rubber buffer 400, thereby avoiding the situation where the sleeper is in hard contact with the ballastless track bed and is damaged by external forces, and at the same time improves the comfort of passengers during train travel. This embodiment assembles the shoe-type rubber buffer 400 on the sleeper through the shoe-type rubber buffer mechanism 300, thereby improving the efficiency of assembly. Specifically, as Figure 5 As shown, the boot-type rubber buffer 400 includes a boot body 401, which is a semi-enclosed structure with its upper end in an open state. It has a bottom buffer wall 404, side buffer walls 402 are respectively formed on both sides of the bottom buffer wall 404, and end buffer walls 403 are respectively formed at both ends of the bottom buffer wall 404. In this way, when the sleeper is assembled in the boot-type rubber buffer 400, except for the upper part of the sleeper, other parts are located in the boot-type rubber buffer 400, ensuring that the sleeper has good buffering capacity after installation.

[0028] As a preferred embodiment of the present invention, Figure 6-8As shown, the shoe support mechanism 300 includes a vertical cylinder 303, a transverse tube 301, a connecting spring 306 and two transverse rods 307. The two ends of the two transverse rods 307 that are close to each other are inserted into the transverse tube 301 through the two ends of the transverse tube 301, the connecting spring 306 is arranged in the transverse tube 301, and the two ends of the connecting spring 306 are fixedly connected to the two ends of the two transverse rods 307 that are close to each other, a driving chamber 305 is formed in the transverse tube 301, and the driving chamber 305 is communicated with the intake and exhaust joint pipe 304 constructed on the transverse tube 301, and an adapter seat 302 is constructed on the transverse tube 301, and the adapter seat 302 is connected to the lower end of the cylinder rod of the vertical cylinder 303. In this embodiment, the ends of the two transverse rods 307 that are away from each other are detachably connected with an outward-stretching support assembly, and the two outward-stretching support assemblies are supported in the boot-type rubber buffer 400. When high-pressure gas is passed into the drive chamber 305 through the air inlet and outlet joints, the high-pressure gas drives the two transverse rods 307 away from each other, thereby making the two outward-stretching support assemblies away from each other. At the same time, each outward-stretching support assembly gradually stretches outward to achieve the purpose of stretching the boot-type rubber buffer 400 to facilitate the assembly of the sleeper. The specific structure of the outward-stretching support assembly in this embodiment is that the outward-stretching support assembly includes a vertical plate 308 and an adapter plate 309, wherein the upper part of the vertical plate 308 is detachably connected to the end of the corresponding transverse rod 307, and the adapter plate 309 is fixedly connected to the lower end of the vertical plate 308. Two connecting shafts 311 are symmetrically connected to the adapter plate 309 for rotation. Each connecting shaft 311 is fixedly connected to a first swing arm 310. A torsion spring 312 is sleeved outside the connecting shaft 311. The two ends of the torsion spring 312 are respectively fixedly connected to the adapter plate 309 and the first swing arm 310, and the two first swing arms 310 are gradually opened outward from the adapter plate 309. In this embodiment, a transfer rod 313 is connected to one end of the first swing arm 310 away from the connecting shaft 311. The transfer rod 313 extends downward in the vertical direction. A second swing arm 314 is connected to the lower end of the transfer rod 313. The second swing arm 314 extends toward the boot-type rubber buffer 400, and the distance between the two second swing arms 314 gradually decreases toward the extension direction of the boot-type rubber buffer 400. An outer support rod 315 is detachably connected to one end of each second swing arm 314 near the boot-type rubber buffer 400. The outer support rod 315 extends upward in the vertical direction. The specific connection method between the outer support rod 315 and the second swing arm 314 is that a threaded connector 316 is configured at the lower end of the outer support rod 315. The lower end of the threaded connector 316 passes through the second swing arm 314. A fastening nut 317 is threadedly connected to the lower end of the threaded connector 316. The fastening nut 317 is locked on the lower end surface of the second swing arm 314. The outer support rod 315 of this embodiment extends into the boot-type rubber buffer 400 and is externally supported at the corresponding inner corner of the boot-type rubber buffer 400.The working principle and advantages of this embodiment are as follows: when supporting the boot-type rubber buffer 400, the boot-type rubber buffer 400 is first inverted, and the two outward-stretching support components are extended into the boot-type rubber buffer 400; then, high-pressure gas is introduced into the driving chamber 305, so that the two outward-stretching support components are separated from each other, and when the outer support rod 315 is supported on the corresponding inner corner of the boot-type rubber buffer 400, along with the movement of the transverse rod 307, the outer support rod 315 continues to support the inner corner of the boot-type rubber buffer 400, so that the outer support rod 315 is gradually stretched outward, and at this time the torsion spring 315 is 2 Torsion energy storage; when the boot-type rubber buffer 400 is fully extended, the vertical cylinder 303 is controlled to drive the transverse rod 307 downward to move downward, so that the two external support components drive the boot-type rubber buffer 400 to move downward until the boot-type rubber buffer 400 is mounted on the inverted rail sleeper. After the mounting is completed, the vertical cylinder 303 is controlled to drive downward, and finally the external support rod 315 is separated from the external support component. Under the elastic return of the torsion spring 312, the first swing arm 310 drives the external support rod 315 to return through the transfer rod 313 and the second swing arm 314. After completing the above operation, the vertical cylinder 303 is controlled to drive the transverse tube 301 and the components directly or indirectly connected thereto to return, and the driving chamber 305 is exhausted at the same time, so as to facilitate the next external support and assembly operation of the boot-type rubber buffer 400. In this embodiment, the shoe-type rubber buffer 400 is assembled by the shoe support mechanism 300, which replaces manual work, improves efficiency and installation accuracy, and ensures safety of operation.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A construction method for grouting hardened ballastless track with a slab-bonded ballast bed, characterized in that: The steps include: Step 1. Divide the track into multiple construction sections evenly along the length direction of the track, and construct the construction sections one by one or simultaneously; Step 2. When the construction section is being constructed, the sleepers of the construction section are dismantled; Step 3. Arrange the steel bars in the ballast bed at predetermined intervals, and insert the lower end of each steel bar into the slab layer of the ballast bed; Step 4. drilling holes in the ballast track bed, with the lower ends of the holes extending to the upper end of the compacted layer; Step 5. Install the top formwork and the side formwork on the upper surface and both sides of the ballast bed, respectively, and form a grouting space between the slab layer, the top formwork and the two side formworks; Step 6. Insert the grouting pipe into the drilled hole through the top template, and insert the bottom of the grouting pipe to the bottom of the hole, and then perform grouting operation; Step 7. After the grouting is completed and the upper part of the ballast track bed slab is completely hardened, the top formwork and side formwork are removed, the sleepers are reinstalled, and the two rails are fixed to the sleepers.

2. A construction method for grouting hardened ballastless track with a slab-bonded ballast bed according to claim 1, characterized in that: In step 2, after the sleepers are removed, a plurality of rail support mechanisms are arranged at intervals along the length direction of the track, and each rail support mechanism supports two rails.

3. The construction method for grouting hardened ballastless track of the slab-bonded ballast bed according to claim 2 is characterized in that: The rail support mechanism includes a transverse suspension beam spanning above the rails, with vertical support plates respectively constructed at both ends of the transverse suspension beam, a fixing seat constructed at the lower end of each vertical support plate, each fixing seat being anchored to the outer side of the ballast bed via a plurality of anchoring screws, a U-shaped buckle seat being arranged below each rail, the U-shaped buckle seat being buckled onto the rail by the lower end of the rail, and connecting plates respectively constructed on both sides of the upper end of the U-shaped buckle seat, each connecting plate being detachably connected to the transverse suspension beam via a plurality of fastening bolts.

4. The construction method for grouting hardened ballastless track of the slab-bonded track according to claim 1, characterized in that: In step 3, step 4 and step 6, multiple steel bars or multiple drill rods or multiple grouting pipes are installed at the lower part of the downward pressure type power device. When the steel bars or grouting pipes are inserted downward, the downward pressure type power device is controlled to move downward, and the steel bars are inserted into the ballasted track bed or the grouting pipes are inserted into the drilled holes. When drilling, the downward pressure type power device is controlled to move downward while driving each drill rod to rotate, so that these drill rods synchronously perform drilling operations on the ballasted track bed.

5. The construction method for grouting hardened ballastless track of the slab-bonded ballast bed according to claim 4 is characterized in that: The downward pressure power device includes a plurality of assembly components installed on an assembly seat at intervals along the length direction of the track, these assembly components are connected through a transmission mechanism, and the transmission mechanism is constructed between these assembly components, the upper ends of steel bars or drill rods or grouting pipes are installed on corresponding assembly components, a vibrator is installed on the assembly seat, and at least one vertical hydraulic cylinder is installed on the assembly seat, and the upper end of the vertical hydraulic cylinder is connected to the body of the traveling vehicle.

6. A construction method for grouting hardened ballastless track according to claim 5, characterized in that: The assembly component includes two sub-seat bodies that are arranged opposite to each other and are detachably connected together. An assembly half-cavity is respectively constructed at one end of the two sub-seat bodies that are close to each other. When the two sub-seat bodies are interlocked and connected together, the two assembly half-cavities are spliced ​​together to form a complete assembly cavity. The assembly shaft tube is rotatably assembled in the assembly cavity, and the upper end of the steel bar or drill rod or grouting pipe is assembled in the assembly shaft tube.

7. A construction method for grouting hardened ballastless track according to claim 6, characterized in that: The transmission mechanism includes a transmission worm rotatably connected to one of the sub-seat bodies, a transmission worm wheel is coaxially assembled on the lower part of the assembly shaft tube, the transmission worm wheel is transmission-connected to the transmission worm, and the transmission worm extends in the longitudinal direction of the track, and a plug-in rod and a plug-in tube extending in the longitudinal direction of the track are detachably connected to both ends of the transmission worm, a limiting strip extending in its axial direction is constructed on the outer peripheral wall of the plug-in rod, and a limiting groove extending in its axial direction is constructed on the inner peripheral wall of the plug-in tube, the corresponding plug-in rods between adjacent transmission worms are inserted into the plug-in tube, and the limiting strips are assembled in the limiting grooves, and the transmission worm located at the end is driven to drive the other transmission worms to rotate synchronously; two guide rails are constructed on the assembly seat, and guide grooves are respectively opened at the ends of the two sub-seat bodies away from each other, and each sub-seat body is assembled on the corresponding guide rail through the guide groove.

8. The construction method for grouting hardened ballastless track of the slab-bonded ballast bed according to claim 1, characterized in that: In step 7, before installing the sleeper, the shoe-type rubber buffer is spread open using a shoe-holding mechanism, and then the shoe-type rubber buffer is mounted on the sleeper so that the peripheral walls and bottom walls of the sleeper are covered by the shoe-type rubber buffer. Thereafter, the sleeper is installed on the hardened ballastless track.

9. A construction method for grouting hardened ballastless track according to claim 8, characterized in that: The support shoe mechanism includes two transverse rods whose ends close to each other are inserted into the transverse tube by the two ends of the transverse tube, a connecting spring is arranged in the transverse tube, the two ends of the connecting spring are fixedly connected to the ends of the two transverse rods close to each other, a driving chamber is formed in the transverse tube, the driving chamber is connected to the intake and exhaust joint pipe constructed on the transverse tube, an adapter seat is constructed on the transverse tube, the adapter seat is connected to the cylinder rod of the vertical cylinder; the ends of the two transverse rods that are far away from each other are respectively detachably connected with an outward-stretching support assembly.

10. A construction method for grouting hardened ballastless track of slab-bonded ballast bed according to claim 9, characterized in that: The outward-stretched support assembly includes a vertical plate which is detachably connected to a transverse rod at an upper portion, an adapter plate is fixed to a lower end of the vertical plate, two connecting shafts are symmetrically rotatably connected to the adapter plate, each connecting shaft is fixedly connected to a first swing arm, a torsion spring is sleeved outside the connecting shaft, two ends of the torsion spring are respectively fixedly connected to the adapter plate and the first swing arm, a connecting rod extending downward in a vertical direction is connected to an end of the first swing arm away from the connecting shaft, a second swing arm is connected to the lower end of the connecting rod, the second swing arm extends toward a boot-type rubber buffer, an external support rod extending upward in a vertical direction is detachably connected to an end of the second swing arm close to the boot-type rubber buffer, the external support rod extends into the boot-type rubber buffer, and is externally supported at a corresponding inner corner of the boot-type rubber buffer.

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