Intelligent lifting device for ballastless railway and subway track structure

Abstract

The utility model relates to an intelligent lifting device for a ballastless railway and subway track structure, and belongs to the technical field of railway and subway settlement disease treatment construction. The device comprises a reaming device, an outer pipe, a lifting power device and an intelligent control device. A longitudinal cutting seam is formed in the lower end of the outer pipe, so that a petal-shaped structure with an everted hook is formed; the lifting power device comprises a lifting frame, a lifting power device and a counter-force rod with a protruding section. The intelligent control device comprises a displacement sensor, a driving sensor and an intelligent control system. The track structure is drilled and reamed, the counter-force foundation is poured, the outer pipe hook is anchored to the lower portion of the base plate, jacking force is provided by the lifting power device, and accurate lifting is achieved under control of the intelligent system. According to the utility model, the damage to the original track structure is small, the construction efficiency is high, and the lifting amount is accurate and controllable.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway and subway settlement treatment construction technology, and specifically relates to an intelligent lifting device for ballastless railway and subway track structures. Background Technology

[0002] With the increasing volume of high-speed rail and subway operations, the problem of roadbed settlement is also becoming more prevalent. Currently, the main method for addressing roadbed settlement is the lifting of railway and subway track slabs. Existing methods for lifting railway and subway track slabs include:

[0003] 1. Excavate multiple working trenches under the track slab base, place jacks in the trenches, use the jacks to lift the track slab base, and then backfill with grout. The drawback of this method is that since the track slab lifting operation is mostly carried out during the train's non-stop operation and takes advantage of the skylight window, this method requires a lot of manpower, has low construction efficiency, and high construction cost.

[0004] 2. Grouting and lifting the roadbed: This method can reinforce the roadbed with grouting. It has a low cost, but poor controllability and is difficult to operate.

[0005] 3. Drill holes and inject adhesive to lift the track slab and its sides. This method utilizes the expansion properties of chemical grout to lift the track slab base. This method has high construction efficiency, but chemical grout is expensive. Since the expansion range and direction of chemical grout are uncontrollable and the expansion rate is greatly affected by ambient temperature and humidity, it often leads to over-lifting, which can cause construction accidents. Utility Model Content

[0006] The purpose of this utility model is to overcome the above-mentioned defects and provide an intelligent lifting device for ballastless railway and subway track structures. Using this device can solve the problem of railway and subway subgrade settlement, with minimal damage to the original track structure of the railway and subway. The intelligent lifting is highly operable, with high construction efficiency and precise and controllable lifting amount.

[0007] The purpose of this utility model is achieved through the following technical solution: an intelligent lifting device for ballastless railway and subway track structures, characterized in that it includes a hole-expanding device, an outer tube, a lifting power device, and an intelligent control device. The hole-expanding device includes a drill rod, a hole-expanding power unit, and a hole-expanding drill bit. Positioning support points are provided on the drill rod. The top of the drill rod is connected to the hole-expanding power unit, and the bottom of the drill rod is connected to the hole-expanding drill bit. The upper end of the outer tube has external threads, and the lower end of the outer tube has several longitudinal cutting slits, dividing the lower end of the outer tube into petal shapes. Each petal has an outwardly turned hook at its bottom, and a rubber pad is embedded in the outer surface of each petal. The inner wall at the bottom of each petal has an inwardly facing... The lifting power device includes a lifting frame, a lifting power unit, and a reaction rod. The lower end of the lifting frame has an opening that connects to an internally threaded connecting pipe. An upper pad and a lower pad are installed inside the lifting frame, and the lifting power unit is installed between the two pads. The upper end of the reaction rod is mounted on the lower pad inside the lifting frame, and the lower end of the reaction rod has a protruding section with a diameter slightly larger than the diameter of the upper end. The reaction rod is inserted into an outer pipe, and the external thread of the outer pipe connects to the internally threaded connecting pipe. The intelligent control device includes a displacement sensor, a drive sensor, and an intelligent control system. The lifting power unit is connected to the drive sensor, and the displacement sensor and drive sensor are respectively connected to the intelligent control system.

[0008] The upper and lower ends of the outer tube are respectively provided with external threads. The lower end of the outer tube has several longitudinal cuts, dividing the lower end of the outer tube into petal shapes. Each petal has an outward hook at its bottom. The upper end of the reaction rod is mounted on the lower pad plate inside the lifting frame. The reaction rod is inserted into the outer tube, and the external thread of the outer tube is connected to the internal thread connecting pipe.

[0009] The reaming drill bit is a flap-type drill bit, which consists of two arc-shaped flaps. One end of each arc-shaped flap is fixed on a rotating shaft. After the two arc-shaped flaps are combined, they surround the rotating shaft, which is installed between the reaming bases at the bottom of the drill rod.

[0010] The outer surface of the arc-shaped flap of the flap drill bit is inlaid with a hard alloy layer.

[0011] The flap-type drill bit is arranged in one, two, or more sets along the drill rod from top to bottom.

[0012] The reaming drill bit is a chain drill bit, which consists of two or more chains of a certain length, with one end of each chain fixedly connected to the bottom of the drill rod.

[0013] The inner wall of the outer tube has arc-shaped transition ends at both ends of the protrusion.

[0014] The beneficial effects of this utility model are:

[0015] After drilling vertically downwards into the ballastless track structure, a hole-enlarging device is used to enlarge the hole at the bottom. A certain thickness of polymer mortar is poured into the hole as a reaction foundation. A lifting device and an intelligent lifting system are installed. The intelligent lifting system and lifting device are then activated to gradually lift the track structure to the target elevation. This method causes minimal damage to the original railway and subway track structures, is highly operable, has high construction efficiency, and allows for precise and controllable lifting. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the lifting power device in embodiments 1 and 2 of this utility model.

[0017] Figure 2 A cross-sectional structural diagram of the lifting power device in Embodiment 3 of this utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the outer tube of this utility model.

[0019] Figure 4 This is a schematic diagram of the outer tube of this utility model.

[0020] Figure 5 This is a schematic diagram of the opening state of the split-type drill bit of the hole-reaming device of this utility model.

[0021] Figure 6 yes Figure 4 Schematic diagram of direction II.

[0022] Figure 7 This is a schematic diagram of the structure of the hole-reaming device of this utility model with the split-type drill bit in the unopened state.

[0023] Figure 8 yes Figure 6 Schematic diagram of direction II.

[0024] Figure 9 This is a schematic cross-sectional view of the outer tube of this utility model in its unopened state.

[0025] Figure 10 This is a schematic cross-sectional view of the outer tube of this utility model in the open state.

[0026] Figure 11 This is a schematic diagram of the chain drill bit structure of the hole-reaming device of this utility model.

[0027] Figure 12 This is a schematic diagram of the two-part drill bit structure of the hole-reaming device of this utility model in the open state.

[0028] Figure 13 This is a schematic diagram of the structure of the hole-reaming device of this utility model with the two-part combination drill bit in the unopened state.

[0029] Figure 14This is a schematic cross-sectional view of the mechanical lifting mechanism of this utility model.

[0030] Figure 15 This is a schematic diagram of the intelligent control connection structure for mechanical lifting of this utility model.

[0031] Figure 16 This is a schematic diagram of the lifting gap filling of this utility model.

[0032] in:

[0033] 1-Lifting frame, 2-Upper and lower pads, 3-Lifting power unit, 4-Reaction rod, 5-Outer tube, 6-Rubber pad, 7-Hook, 8-Outer protruding section of reaction rod, 9-Protrusion, 10-Reaction pad, 11-External thread, 12-Cutting seam, 13-Rivet, 14-Reaming power unit, 15-Drill rod support point, 16-Drill rod, 17-Flap drill bit spindle, 18-Carbide, 19-Reaming base 20-Clasp type drill bit, 21-Rail bed plate, 22-Base plate, 23-Base bed surface layer, 24-Filling hole, 25-Reaction foundation, 26-Displacement sensor, 27-Drive sensor, 28-Intelligent control system, 29-Gap filler, 30-Chain, 31-Snap ring, 32-External thread, A-Outer diameter of hook not open, B-Outer diameter of hook open, C-Inner diameter of hook not open. Detailed Implementation

[0034] The following description, in conjunction with the accompanying drawings, introduces the intelligent lifting device for ballastless track structures in railways and subways. A certain railway and subway ballastless track structure experienced a settlement of 100mm; the intelligent lifting device for ballastless railway and subway track structures was used for lifting and remediation operations.

[0035] Example 1: As Figure 1As shown, an intelligent lifting device for ballastless railway and subway track structures includes a hole-expanding device, an outer tube 5, a lifting power device, and an intelligent control device. The hole-expanding device includes a drill rod 16, a hole-expanding power unit 14, and a hole-expanding drill bit. The hole-expanding power unit 14 uses mechanical power, hydraulic power, or a pneumatic motor (e.g., electric motor, hydraulic motor, etc.) to provide power to the drill rod 16. A positioning support point 15 is provided on the drill rod 16 to guide the drill rod 16 and ensure its verticality. The top of the drill rod 16 is connected to the shaft of the hole-expanding power unit 14 by a thread or key, and the bottom of the drill rod 16 is connected to a hinged drill bit. The head 20, the flap-type drill bit 20, can be arranged in one, two, or more sets from top to bottom along the bottom of the drill rod 16 according to construction needs. The flap-type drill bit 20 consists of two arc-shaped flaps, one end of each arc-shaped flap is fixed on the rotating shaft 17, and the two arc-shaped flaps are merged to surround the rotating shaft 17. The outer surface of the arc-shaped flaps of the flap-type drill bit 20 is inlaid with a hard alloy layer 18. The rotating shaft 17 is installed between the reaming bases 19 at the bottom of the drill rod 16 and connected to the drill rod 16. The upper end of the outer tube 5 is provided with an external thread 11, and the lower end of the tube wall of the outer tube 5 is provided with several longitudinal cutting slits 12 to cut the outer tube. The lower end of tube 5 is divided into petal shapes. Each petal has an outwardly turned hook 7 at its bottom. Rubber pads 6 are embedded in the outer surface of each petal to prevent damage to the base plate 22 when the hooks 7 expand. The inner wall of each petal has an inwardly protruding 9, and the two ends of the protruding 9 are arc-shaped transition ends. The lifting power device includes a lifting frame 1, a lifting power unit 3, and a T-shaped reaction rod 4. The lower end of the lifting frame 1 has an opening that connects to an internally threaded connecting pipe. An upper pad 2 and a lower pad 2 are installed inside the lifting frame 1. The lifting power unit 3 is installed between the two pads 2. The lifting power unit 3 is a hydraulic rod. The lifting power unit 3 is connected to a hydraulic or pneumatic motor to provide power. The upper end of the T-shaped reaction rod 4 is mounted on the lower pad 2 inside the lifting frame 1. The lower end of the T-shaped reaction rod 4 has a protruding section 8 with a diameter slightly larger than that of the upper end. The T-shaped reaction rod 4 is inserted into the outer tube 5. The external thread 11 of the outer tube 5 is connected to the internal thread connecting pipe. The intelligent control device includes a displacement sensor 26, a drive sensor 23, and an intelligent control system 28. The lifting power unit 3 is connected to the drive sensor 23. The displacement sensor 26 and the drive sensor 23 are respectively connected to the intelligent control system 28.

[0036] The lifting method using the above-mentioned intelligent lifting device for ballastless railway and subway track structures includes the following steps:

[0037] Step 1: Select a suitable point on the ballastless track slab where it is to be raised and drill holes. The hole diameter should not be less than the diameter of the hook 7 at the bottom of the outer tube 5. Drill through the track bed 21 and the base plate 22 from top to bottom, and enter the surface layer 23 of the base bed to a certain depth.

[0038] Step 2: As Figure 5-8As shown, after assembling the hole reaming device, the closed-off split drill bit 20 is placed into the hole drilled in step 1, with the depth within the base bed surface layer 23. The support point 15 on the drill rod 16 is used to guide the drill rod 16 and ensure the verticality of the drill rod 16. The hole reaming device is used to ream the part of the base bed surface layer 23.

[0039] Step 3: Turn on the hole reamer 14 to drive the drill rod 16 to rotate at high speed. Under the action of centrifugal force, the split drill bit 20 is opened. The outer surface of the split drill bit 20 impacts the base bed surface layer 23 to expand the hole. Gradually expand the hole to a certain diameter. After the hole is expanded, use a high-pressure air pipe to suck out or blow out the debris in the hole to clean it. Then, pour a certain thickness of polymer mortar into the hole of the base bed surface layer as a reaction foundation 25. Then, place the reaction pad 10 on top of the reaction foundation 25 in the hole.

[0040] Step 4: Insert the bottom end of the outer tube 5 into the enlarged hole of Step 3, with the hook 7 part lower than the base plate 22. Insert the reaction rod 4 into the outer tube 5, and place the reaction rod 4 through the hook 7 on the reaction pad 10. Tightly connect the internal threaded connecting pipe of the lifting frame 1 to the external thread at the upper end of the outer tube 5 through the thread. Install the upper and lower steel pads 2 in the lifting frame 1. Install the lifting power unit 3 between the upper and lower steel pads 2. The upper end of the T-shaped reaction rod 4 is mounted on the lower steel pad 2.

[0041] Step 5: Install displacement sensor 26 on the track slab 21 of the ballastless track, start the intelligent control system 28, and under the action of T-shaped reaction rod 4, the lifting frame 1 rises, and the lifting frame 1 drives the outer tube 5 to move upward. The hook 7 at the bottom of the outer tube 5, in the closed state, has an outer diameter as shown in the figure. Figure 9 The image shows A, as shown. Figure 3 The inner diameter shown is C. The diameter of the non-protruding part at the bottom of the T-shaped reaction rod 4 is smaller than C. When the outer tube 5 moves upward, the protrusion 9 on the inner wall of the petal meets the outer protruding section 8 of the T-shaped reaction rod 4, and the outer diameter of the hook 7 is gradually adjusted as shown. Figure 10 As shown in Figure B, the rubber pads 6 embedded on the outer surface of each petal can prevent damage to the base plate 22 when the hook 7 expands; under the combined action of the lifting power unit 3 and the intelligent lifting control system 28, the hook 7 hooks onto the base plate 22 and moves upward, and the lifting stops when the target height is sensed by the displacement sensor.

[0042] Step 6: After lifting the base plate in Step 6, a lifting hole is formed between the base plate 22 and the surface layer 23 of the base bed. A filling hole 24 is drilled perpendicularly to the ballastless track at a certain position near the corresponding lifting hole. The depth of the filling hole is through the track bed 21 and the base plate 22. Flow polymer mortar is used to fill the gap 29 after lifting through the filling hole 24. Finally, the filling hole 24 is sealed to complete the lifting and treatment task.

[0043] Example 2: An intelligent lifting device for ballastless railway and subway track structures, replacing the bottom flap drill bit 20 of the drill rod 16 in Example 1 with a chain drill bit. The chain drill bit consists of two or three chains 30 of a certain length, with one end of all chains fixedly connected to the retaining ring 31 at the bottom of the drill rod 16. Other structures are the same as in Example 1.

[0044] The lifting method using the above-mentioned intelligent lifting device for ballastless railway and subway track structures includes the following steps:

[0045] Steps 1 and 4-6 are the same as the lifting method in Example 1.

[0046] Step 2: As Figure 11 As shown, after assembling the hole reaming device, the chain drill bit is placed into the hole drilled in step 1, with the depth within the base bed surface layer 23. The support point 15 on the drill rod 16 is used to guide the drill rod 16 and ensure the verticality of the drill rod 16. The hole reaming device is used to ream the part of the base bed surface layer 23.

[0047] Step 3: Turn on the reaming power unit 14 to drive the drill rod 16 to rotate at high speed. Under the action of centrifugal force, the chain 30 of the chain drill bit is opened. The chain 30 hits the surface layer 23 of the base bed to expand the hole. Gradually expand the hole to a certain diameter. After the hole is expanded, use a high-pressure air pipe to suck out or blow out the debris in the hole for cleaning. Then, pour a certain thickness of polymer mortar into the hole of the surface layer 23 of the base bed as a reaction foundation 25. Then, place the reaction pad 10 on top of the reaction foundation 25 in the hole.

[0048] Example 3: As Figure 2 As shown, an intelligent lifting device for ballastless railway and subway track structures is provided. The upper and lower ends of the outer tube 5 are respectively provided with external threads 11 and 32. The lower end of the outer tube 5 is provided with several longitudinal cutting slits 12, which divide the lower end of the outer tube 5 into petal shapes. Each petal has an outward hook 7 at the bottom. The reaction rod 4 is T-shaped. Other structures are exactly the same as in Embodiment 1 or Embodiment 2.

[0049] The lifting method using the above-mentioned intelligent lifting device for ballastless railway and subway track structures includes the following steps:

[0050] Step 1: Select a suitable point on the ballastless track slab where it is to be raised and drill holes. The hole diameter should not be less than the diameter of the hook 7 at the bottom of the outer tube 5. Drill through the track bed 21 and the base plate 22 from top to bottom, and enter the surface layer 23 of the base bed to a certain depth.

[0051] Step 2: As Figure 5-8As shown, after assembling the reaming device, place the closed-end drill bit 20 or chain drill bit into the hole drilled in step 1, within the depth of the base bed surface layer 23. The support point 15 on the drill rod 16 is used to guide the drill rod 16 and ensure its verticality. The reaming device is then used to ream the portion of the base bed surface layer 23.

[0052] Step 3: Turn on the hole reaming power unit 14 to drive the drill rod 16 to rotate at high speed. Under the action of centrifugal force, the split drill bit 20 or the chain drill bit is opened. The outer surface of the split drill bit 20 or the chain 30 of the chain drill bit hits the base bed surface layer 23 to expand the hole. Gradually expand the hole to a certain diameter. After the hole is expanded, use a high-pressure air pipe to suck out or blow out the debris in the hole for cleaning. After cleaning the debris in the hole of the base bed surface layer 23, pour a certain thickness of polymer mortar into the hole of the base bed surface layer 23 as a reaction foundation 25. Then place the reaction pad 10 on top of the reaction foundation 25 in the hole.

[0053] Step 4: Apply adhesive to the external thread 32 at the lower end of the outer tube 5, and put the bottom end of the outer tube 5 into the enlarged hole in Step 3. Hook the hook 7 part of the outer tube 5 onto the lower end of the base plate 22 to make the outer tube 5 and the base plate 22 firmly attached. Depending on the lifting needs, in order to make the outer tube 5 more firmly attached, it can also be firmly attached to the base plate 22 and the track bed plate 21. The external thread 32 at the lower end of the outer tube 5 helps to make the attachment firm. Insert the reaction rod 4 into the outer tube 5. The reaction rod 4 passes through the hook 7 and is placed on the reaction pad 10. Connect the internal threaded connecting pipe of the lifting frame 1 to the external thread 11 at the upper end of the outer tube 5 with the thread and tighten it. Install the upper and lower steel pads 2 in the lifting frame 1. The lifting power unit 3 is a jack, which is installed between the upper and lower steel pads 2. The upper end of the T-shaped reaction rod 4 is mounted on the lower steel pad 2.

[0054] Step 5: Install displacement sensor 26 on the track bed slab 21 of the ballastless track, start the intelligent control system 28, and under the action of T-shaped reaction rod 4, the lifting frame 1 rises. The lifting frame 1 drives the outer tube 5 to move upward. Since the hook 7 at the bottom of the outer tube 5 is attached to the base plate 22 (track bed slab 21), under the combined action of the lifting power unit 3 and the intelligent lifting control system 28, the hook 7 hooks the base plate 22 and moves upward. The target height is sensed by the displacement sensor, and the lifting stops.

[0055] Step 6: After lifting the base plate in Step 6, a lifting hole is formed between the base plate 22 and the surface layer 23 of the base bed. A filling hole 24 is drilled perpendicularly to the ballastless track at a certain position near the corresponding lifting hole. The depth of the filling hole is through the track bed 21 and the base plate 22. Flow polymer mortar is used to fill the gap 29 after lifting through the filling hole 24. Finally, the filling hole 24 is sealed to complete the lifting and treatment task.

Claims

1. An intelligent lifting device for ballastless railway and subway track structures, characterized in that: The device includes a reaming apparatus, an outer tube, a lifting power unit, and an intelligent control device. The reaming apparatus includes a drill rod, a reaming power unit, and a reaming drill bit. The drill rod has positioning support points, its top is connected to the reaming power unit, and its bottom is connected to the reaming drill bit. The upper end of the outer tube has external threads, and the lower end of the outer tube has several longitudinal cuts, dividing the lower end of the outer tube into petal shapes. Each petal has an outward-facing hook at its base, a rubber pad embedded in the outer surface of each petal, and an inward-facing protrusion on the inner wall of the base of each petal. The lifting power unit includes a lifting frame, a lifting power unit, and... The lifting frame has an opening at its lower end, which connects to an internally threaded connecting pipe. An upper and lower pad are installed inside the lifting frame, and a lifting power unit is installed between the two pads. The upper end of the reaction rod rests on the lower pad inside the lifting frame. The lower end of the reaction rod has a protruding section with a diameter slightly larger than the upper end. The reaction rod is inserted into an outer pipe, whose external thread connects to the internally threaded connecting pipe. The intelligent control device includes a displacement sensor, a drive sensor, and an intelligent control system. The lifting power unit is connected to the drive sensor, and the displacement sensor and drive sensor are respectively connected to the intelligent control system.

2. The intelligent lifting device for ballastless railway and subway track structures according to claim 1, characterized in that: The upper and lower ends of the outer tube are respectively provided with external threads. The lower end of the outer tube has several longitudinal cuts, dividing the lower end of the outer tube into petal shapes. Each petal has an outward hook at its bottom. The upper end of the reaction rod is mounted on the lower pad plate inside the lifting frame. The reaction rod is inserted into the outer tube, and the external thread of the outer tube is connected to the internal thread connecting pipe.

3. The intelligent lifting device for ballastless railway and subway track structures according to claim 1 or 2, characterized in that: The reaming drill bit is a flap-type drill bit, which consists of two arc-shaped flaps. One end of each arc-shaped flap is fixed on a rotating shaft. After the two arc-shaped flaps are combined, they surround the rotating shaft, which is installed between the reaming bases at the bottom of the drill rod.

4. The intelligent lifting device for ballastless railway and subway track structures according to claim 3, characterized in that: The outer surface of the arc-shaped flap of the flap drill bit is inlaid with a hard alloy layer.

5. The intelligent lifting device for ballastless railway and subway track structures according to claim 3, characterized in that: The flap-type drill bit is arranged in one, two, or more sets along the drill rod from top to bottom.

6. The intelligent lifting device for ballastless railway and subway track structures according to claim 1 or 2, characterized in that: The reaming drill bit is a chain drill bit, which consists of two or more chains of a certain length, with one end of each chain fixedly connected to the bottom of the drill rod.

7. The intelligent lifting device for ballastless railway and subway track structures according to claim 1, characterized in that: The inner wall of the outer tube has arc-shaped transition ends at both ends of the protrusion.

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