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CN-122013608-A - Chain saw and ballastless track roadbed upward arch repairing method

CN122013608ACN 122013608 ACN122013608 ACN 122013608ACN-122013608-A

Abstract

The invention discloses a chain saw and a ballastless track roadbed upper arch repairing method, wherein the chain saw comprises a cutting mechanism, a traction mechanism and a driving mechanism, one traction mechanism and one driving mechanism are respectively arranged at two ends of the cutting mechanism, the cutting mechanism comprises two mounting seats, chain plates, chain cutting, chain wheels and adjusting pieces, the two mounting seats are arranged at intervals along a first direction, the mounting seats are in driving connection with the traction mechanism, one chain wheel is respectively and rotatably arranged on the two mounting seats, the driving mechanism is in driving connection with the chain wheels, the chain plates comprise inner chain plates and outer chain plates, two ends of the outer chain plates are slidably connected with one inner chain plate and one end, far away from the outer chain plates, of the inner chain plates are connected with the mounting seats, the adjusting pieces are arranged on the outer chain plates, the adjusting ends of the adjusting pieces are in driving connection with the two inner chain plates and are used for driving the two inner chain plates to be close to or far away from each other, and the chain cutting rings are arranged around the chain plates and meshed with the two chain wheels. The problem of the cutting width of chain saw is difficult to adjust, application scope is little is solved.

Inventors

  • Guo Zilian
  • ZHANG HAORAN
  • HOU YONGKANG
  • ZHOU LEI
  • ZHENG XIAOBING
  • Li Longyong

Assignees

  • 北京瑞威世纪岩土工程有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. The chain saw is characterized by comprising a cutting mechanism, a traction mechanism and a driving mechanism, wherein two ends of the cutting mechanism are respectively provided with the traction mechanism and the driving mechanism; The cutting mechanism comprises a mounting seat (1), a chain plate, a chain cutting (2), a chain wheel (3) and an adjusting piece (4); The two mounting seats (1) are arranged at intervals along a first direction, the mounting seats (1) are in driving connection with the traction mechanism, the two mounting seats (1) are respectively and rotatably provided with one chain wheel (3), and the driving mechanism is in driving connection with the chain wheel (3) and is used for driving the chain wheel (3) to rotate; The chain plate comprises an inner chain plate (5) and an outer chain plate (6), wherein both ends of the outer chain plate (6) are slidably connected with one inner chain plate (5) along the length direction of the outer chain plate, and one end, far away from the outer chain plate (6), of the inner chain plate (5) is connected with the mounting seat (1); The adjusting piece (4) is arranged on the outer chain plate (6), and the adjusting end of the adjusting piece is in driving connection with the two inner chain plates (5) and is used for driving the two inner chain plates (5) to be close to or far away from each other; the truncated chain (2) is arranged around the chain plate and is meshed with the two chain wheels (3).
  2. 2. The chain saw according to claim 1, wherein a sliding groove (603) is formed in the outer chain plate (6) in a penetrating manner along a first direction, one end of the inner chain plate (5) is slidably inserted into the sliding groove (603), one extending part (7) is formed at one end of the inner chain plate (5) extending into the sliding groove (603) along the first direction, the two extending parts (7) are arranged in a staggered manner along the first direction, projections in a second direction at least partially overlap, and racks (8) are arranged at one sides of the two extending parts (7) facing each other; The adjusting piece (4) comprises a gear (401) and a limiting piece (402), the gear (401) is rotatably arranged in the sliding groove (603) through a rotating shaft, the gear (401) is positioned between the two extending parts (7) and meshed with the rack (8), at least one end of the rotating shaft penetrates through the side wall of the outer chain plate (6) and is provided with an adjusting hole (403) on the end face of the rotating shaft, and the limiting piece (402) is inserted on the outer chain plate (6) in a mode of being removable corresponding to the gear (401) along a third direction and meshed with the gear (401); Wherein the first direction, the second direction and the third direction are perpendicular to each other.
  3. 3. The chain saw according to claim 2, wherein one side of the outer chain plate (6) is provided with a limiting hole (9) corresponding to the limiting piece (402), the limiting hole (9) is communicated to the sliding groove (603), the inner side wall of the sliding groove (603) is provided with a clamping groove corresponding to the limiting hole (9), the limiting piece (402) is embedded in the clamping groove in an adaptive manner through the limiting hole (9), and an engagement portion for engaging with the gear (401) is arranged on one side of the limiting piece (402) facing the gear (401).
  4. 4. A chain saw according to claim 3, wherein the end face of the limiting member (402) near the limiting hole (9) is provided with a threaded hole (404); And/or the adjusting holes (403) are polygonal holes.
  5. 5. A chain saw according to claim 1, wherein the cutting chain (2) comprises a plurality of inner links (201) and outer links (202) which are alternately connected in turn, both ends of the inner links (201) are respectively hinged with the two outer links (202), the inner links (201) are meshed with the chain wheel (3), and cutting teeth (203) for cutting are arranged on the outer links (202).
  6. 6. The chain saw as in claim 5, wherein the outer link (202) has a U-shaped cross section and has a connecting groove (204), one end of the inner link (201) extends into the connecting groove (204) and is hinged to both side walls of the connecting groove (204), and a plurality of tapered protrusions (205) are provided at both ends of the groove bottom of the connecting groove (204) corresponding to the inner link (201).
  7. 7. The chain saw as recited in any one of claims 1-6, wherein the outer link plate (6) is provided with a limiting groove (604) on both sides in the second direction, the truncated chain (2) being wound in the limiting groove (604).
  8. 8. The chain saw as in claim 7, wherein the outer link plate (6) comprises two side plates (601) and two fixing plates (602) between the two side plates (601), the two fixing plates (602) being spaced apart along the second direction, the side plates (601) being connected to the fixing plates (602) by fasteners.
  9. 9. A ballastless track subgrade arching method, applied to the chain saw as claimed in any one of claims 1 to 8, comprising the steps of: Checking and retesting the structural state, deformation and curing range of the ballastless track (10); Digging walking grooves (11) on two sides of an upper arch section of a roadbed of the ballastless track (10) along the longitudinal direction; Digging mounting grooves (12) at two ends of a traveling groove (11) to a preset distance below a base of the ballastless track (10), simultaneously arranging a first temporary support (13) in the mounting grooves (12), and mounting the chain saw in the mounting grooves (12); The cutting mechanism is driven by the driving mechanism of the chain saw to cut graded broken stone in the transverse direction, and the cutting mechanism is driven by the traction mechanism of the chain saw to longitudinally move and cut in the walking groove (11) so as to separate the base of the ballastless track (10) from the roadbed to form a cutting area; -providing a second temporary support (14) at the cutting area below the ballastless track (10); carrying out falling road deviation correction on the ballastless track (10); And grouting and repairing the cutting area, and backfilling the excavation area.
  10. 10. The ballastless track subgrade arching treatment method according to claim 9, characterized in that said step between said setting of a second temporary support (14) at said cutting area below said ballastless track (10) and said landing deviation correction of said ballastless track (10) further comprises the steps of: Two sides of the ballastless track (10) are provided with adjustable transverse supporting mechanisms; and/or, the step of carrying out the falling road deviation correction on the ballastless track (10) specifically comprises the following steps: measuring the ballastless track (10), collecting basic data of the ballastless track (10), and analyzing to obtain a target falling track quantity and a target transverse deviation correction quantity corresponding to the ballastless track (10); A plurality of groups of jacking devices (17) are arranged below the ballastless track (10) at intervals along the longitudinal direction, sleepers at corresponding positions of the ballastless track (10) are jacked by the jacking devices (17) according to the target falling track quantity, a preset number of steel backing plates are replaced, the jacking devices (17) are reset after replacement is completed, the actual falling track quantity of the sleepers is measured, and the actual falling track quantity is compared with the target falling track quantity; A plurality of groups of pushing devices are arranged on at least one side of the ballastless track (10) at intervals along the longitudinal direction, and the pushing devices are used for pushing sleepers at corresponding positions of the ballastless track (10) in the transverse direction according to the target transverse deviation correction quantity, and the pushing devices are used for pushing the sleepers until the target transverse deviation correction quantity is achieved; And/or grouting repair is carried out on the cutting area, and backfilling of the excavation area specifically comprises the following steps: Cleaning the cutting area and confirming that the structural state of the ballastless track (10) meets the requirements; sealing the edges of the cutting areas and grouting for filling; And backfilling the excavated area after grouting is completed.

Description

Chain saw and ballastless track roadbed upward arch repairing method Technical Field The invention relates to the technical field of track engineering, in particular to a chain saw and a ballastless track subgrade upward arch repairing method. Background In a ballastless track structure of a high-speed railway, the occurrence of arch damage on a roadbed is frequent. The ballastless track structure is arched mainly because the filler adopted by the roadbed has certain expansibility, such as quicklime modified soil, expansive soil and other fillers with expansibility, and the roadbed is subjected to expansion deformation after being immersed in water to cause the track structure to be arched, and the repairing technology has obvious defects that the fastener adjustment is only suitable for the condition of small arch amount, the adjusting capability is limited, and the workload is high and the labor is consumed. In the related art, a chain saw is generally adopted to cut the lower part of the ballastless track, so that a base of the ballastless track is separated from a roadbed to form a cutting area, and the cutting area is adjusted through a jack, however, the cutting width of the chain saw is generally fixed, the adjustment is difficult to be carried out according to actual requirements, and the application range is small. Disclosure of Invention The embodiment of the invention provides a chain saw and a ballastless track subgrade upper arch repairing method, which are used for solving the problems that the cutting width of the existing chain saw is usually fixed, the adjustment is difficult to be carried out according to actual requirements and the application range is small. In a first aspect, the present invention provides a chain saw comprising a cutting mechanism, a traction mechanism and a driving mechanism, wherein two ends of the cutting mechanism are respectively provided with the traction mechanism and the driving mechanism; The cutting mechanism comprises a mounting seat, a chain plate, a chain cutting, a chain wheel and an adjusting piece; The two mounting seats are arranged at intervals along the first direction; the two mounting seats are respectively and rotatably provided with one chain wheel, and the driving mechanism is in driving connection with the chain wheels and is used for driving the chain wheels to rotate; The chain plate comprises an inner chain plate and an outer chain plate, wherein both ends of the outer chain plate are slidably connected with one inner chain plate along the length direction of the outer chain plate, and one end of the inner chain plate, which is far away from the outer chain plate, is connected with the mounting seat; The adjusting piece is arranged on the outer chain plate, and the adjusting end of the adjusting piece is in driving connection with the two inner chain plates and is used for driving the two inner chain plates to be close to or far away from each other; The truncated chain is arranged around the chain plate and meshed with the two chain wheels. The outer chain plate is provided with a sliding groove, one end of the inner chain plate is inserted into the sliding groove in a sliding way, and the other end of the inner chain plate, which extends into the sliding groove, is provided with an extending part along the first direction; The adjusting piece comprises a gear and a limiting piece, wherein the gear is rotatably arranged in the chute through a rotating shaft, the gear is positioned between the two extending parts and meshed with the rack, at least one end of the rotating shaft penetrates through the side wall of the outer chain plate and is provided with an adjusting hole on the end face of the rotating shaft, and the limiting piece is inserted on the outer chain plate in a removable manner along a third direction corresponding to the gear and meshed with the gear; Wherein the first direction, the second direction and the third direction are perpendicular to each other. Optionally, a limiting hole is formed in one side of the outer chain plate, corresponding to the limiting piece, and is communicated with the sliding groove, a clamping groove is formed in the inner side wall of the sliding groove, corresponding to the limiting hole, of the limiting piece, the limiting piece is inserted into the clamping groove in an adaptive mode through the limiting hole, and a meshing portion used for meshing with the gear is arranged on one side, facing the gear, of the limiting piece. Optionally, a threaded hole is formed in the end face, close to the limiting hole, of the limiting piece; and/or, the adjusting hole is a polygonal hole. Optionally, the chain cutting device comprises a plurality of inner chain links and outer chain links which are sequentially and alternately connected, wherein two ends of each inner chain link are respectively hinged with two outer chain links, the inner chain links are meshed with the chain wheels, and cutting teeth for