Rail lifting device, rail-ground backhoe and rail lifting method

Abstract

To provide a rail lifting device, a rail-ground backhoe and a rail lifting method that can reduce labor cost by reducing as much as possible the number of maintaining workers for rail lifting.SOLUTION: A rail lifting device 1, which corrects a rail (right rail R1 or left rail R2) that has been moved from its correct height by returning it to the correct position, includes a pair of left and right clamp claws 2 that hook onto each of the pair of left and right rails, a pair of left and right lifting jacks 3 for pushing up the clamp claws 2 hooked onto each rail, a pair of left and right swinging jacks 4 for swinging the clamp claws 2 together with the lifting jacks 3 and inserting them below the rails, and a cant measurement mechanism 5 for measuring the difference in height between the pair of left and right rails.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a railroad track lifting device that lifts the left and right rails of a fallen railroad track to their correct positions, and more particularly to a railroad track lifting device and method that are integrated with a rail backhoe that can run on tracks and roads to compact ballast. [Background technology]

[0002] In track maintenance work, sunken track frames (composed of rails and sleepers) are lifted using a track lifting device, and the ballast is compacted using a tie tamper device etc. to repair and maintain the track (track frame).

[0003] However, in the past, such track maintenance work related to track lifting required manual labor to lift the track and to measure whether the left and right rails of the track were raised to the correct height, and this work required a large number of workers to spend a lot of time on the job, which resulted in high maintenance costs.

[0004] In order to solve such problems, for example, Patent Document 1 discloses a lifting mechanism 30 that includes a carriage 20 that can run on rails and a lifting mechanism 30 for lifting the carriage 20 together with the rails. The lifting mechanism 30 includes a pair of claw mechanisms 31A and 31B that are supported on both sides of the carriage 20 so as to be freely opened and closed in a direction X perpendicular to the traveling direction of the carriage 20 and have claw pieces 36A and 36B at the tip that engage with the respective rails when closed, a drive mechanism 32 that links the claw mechanisms to perform opening and closing operations, and a lifting mechanism 30 that is connected to the carriage 20. and a pair of lifting jacks 33A, 33B provided on both sides above the track, each of which has a base portion 33c pressed against the ground and a lifting portion 33a pushed up by a reaction force from the ground against the base portion, and a track lifting device in which claw mechanisms 31A, 31B are connected to the lifting portions is disclosed (see claim 1 in the claims of Patent Document 1, paragraphs

[0016] to

[0033] of the specification, Figures 1 to 4 of the drawings, etc.).

[0005] However, the track lifting device described in Patent Document 1 needs to use a laser level to determine whether the lifting mechanism 30 has lifted the rail to a specified height, so at least two workers are needed: one to operate the lifting mechanism 30 and one to measure the laser level, and the problem of the time and manpower required to measure with a laser level, which increases maintenance costs, was not significantly solved. In addition, the track lifting device described in Patent Document 1 needs a separate device such as a tie tamper to compact the ballast, which also causes problems of increased manpower and costs for transporting the device.

[0006] Patent Document 2 also describes a rail-mounted backhoe 1 having a tie tamper portion 12c at the tip of an arm 11a for compacting ballast, a rail lifting dolly 2 that is connected to the rail-mounted backhoe 1 via a first connecting member 4 and runs on the rails as the rail-mounted backhoe 1 runs, clamps the rails, and lifts the rails consisting of the rails and sleepers, and a rail lifting dolly 2 that is connected to the rail-mounted lifting dolly 2 via a second connecting member 5 and is pulled by the rail-mounted lifting dolly 2 as the rail-mounted backhoe 1 runs. A track lifting device is disclosed which comprises a laser carriage 3 which runs on a rail while being tilted and which is equipped with a level inspection laser transmitter which transmits a level inspection laser, and the track lifting carriage 2 is equipped with a laser receiver which receives the level inspection laser from the level inspection laser transmitter of the laser carriage 3 and displays the level (see claim 1 in the claims of Patent Document 2, paragraphs

[0012] to

[0037] of the specification, Figures 1 to 3 of the drawings, etc.).

[0007] However, although the rail-mounted lifting device described in Patent Document 2 reduces the cost of transporting the device because the lifting cart 2 and laser cart 3 are towed by the rail-mounted backhoe 1, the rail-mounted backhoe 1 and the lifting cart 2 are operated separately, and like the rail-mounted lifting device described in Patent Document 1, a minimum of two workers are required: one to operate the lifting mechanism of the lifting cart 2, and one to measure the laser level, so that it does not solve the problems of time and manpower required for measurement with a laser level, and high maintenance costs. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 6556553 [Patent Document 2] Patent No. 7220839 Summary of the Invention [Problem to be solved by the invention]

[0009] Therefore, the present invention has been devised in consideration of the above-mentioned problems, and its object is to provide a track lifting device, a rail-mounted backhoe, and a track lifting method that can reduce the number of workers required for maintenance work related to track lifting as much as possible, thereby reducing labor costs. [Means for solving the problem]

[0010] The track lifting device of claim 1 is a track lifting device that corrects rails of a track that have been moved from the normal height by returning them to the normal height, and is characterized by comprising a pair of left and right clamp claws that hook onto each of a pair of left and right rails, a pair of left and right lifting jacks for pushing up the clamp claws hooked onto each rail, a pair of left and right swinging jacks for swinging the clamp claws together with the lifting jacks and inserting them below the rails, and a cant measurement mechanism that measures the difference in height between the pair of left and right rails.

[0011] The track lifting device of claim 2 is characterized in that, in the track lifting device of claim 1, the cant measurement mechanism is configured to rise and fall using a cant lifting jack, to abut against the rail when measuring, and to be able to move away from the rail and retract when not measuring.

[0012] The track lifting device of claim 3 is characterized in that, in the track lifting device of claim 2, the cant measurement mechanism includes a cant measurement rod bridged between the upper ends of a pair of left and right rails, a cant measurement device that abuts against the upper end of the cant measurement rod to measure the difference in height between the left and right rails, and a cant lifting jack that moves the cant measurement rod up and down to raise and lower it, and the cant measurement rod is raised and lowered by the cant lifting jack so as to be able to abut against or not contact the rails.

[0013] The rail-mounted backhoe of claim 4 is a rail-mounted backhoe equipped with a crawler mechanism for traveling on land, a wheel mechanism for traveling on a railroad track, and a wheel swinging mechanism for swinging the wheel mechanism to raise and lower the track, and is characterized in that a rail-mounted lifting device described in any one of claims 1 to 3 is attached to a front wheel swinging mechanism for swinging the front wheels of the wheel swinging mechanism.

[0014] The rail-road backhoe according to claim 5 is characterized in that in the rail-road backhoe according to claim 4, a tamper attachment for tamping the track bed and ballast is attached to the bucket portion of the backhoe.

[0015] The track lifting method of claim 6 is a track lifting method for returning and correcting rails of a track that have been moved from a normal height to the normal height, and is characterized by comprising a transporting process of transporting the track lifting device to a track lifting work site by traveling on the tracks with the rail-mounted backhoe described in claim 4, a clamp claw swinging process of operating the swinging jack to insert the clamp claws below the rail, and a track lifting process of operating the lifting jack to lift the rail that is hooked onto the clamp claws while measuring the cant with a reference rail with the cant measuring mechanism.

[0016] The railroad track lifting method of claim 7 is characterized in that, in the railroad track lifting method of claim 6, it includes a compaction process in which the tamper attachment of the rail-road backhoe of claim 5 is used to vibrate and compact the ballast.

[0017] The track lifting method of claim 8 is characterized in that, in the track lifting method of claim 7, a cant lifting jack of the track lifting device of claim 2 or 3 is activated to retract the cant measurement mechanism from the rail before the compaction process. Effect of the Invention

[0018] According to the inventions of claims 1 to 8, the clamp claw is swung by the swing jack and inserted under the rail, and the cant measurement mechanism measures the difference in height between one rail and the other rail as a reference while the lifting jack latches the dropped rail with the clamp claw and pulls it up to the correct position, so that the maintenance work for track lifting can be completed in a short time and the number of workers required can be reduced as much as possible. This allows the total number of workers engaged in track lifting work to be reduced, thereby reducing labor costs.

[0019] In particular, according to the inventions defined in claims 2, 3 and 8, the cant measurement mechanism is retracted from the rail, thereby preventing the vibrations of the tie tamper device from being directly transmitted via the rail to the cant measurement device, which is a precision machine, and thereby protecting the cant measurement device.

[0020] In particular, according to the inventions of claims 5 and 7, the ballast is compacted by operating a tie tamper attachment, eliminating the need to manually operate a handheld tie tamper device as in the conventional method, and there is no adverse effect on the human body due to vibrations. The compaction work can be easily performed in a short time with a small number of workers. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing a track lifting device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing the track lifting device of the same. [Diagram 3] FIG. 3 is a right side view showing the track lifting device of the same. [Figure 4] FIG. 4 is a plan view showing the track lifting device of the same. [Diagram 5] FIG. 5 is a side view showing the rail-road backhoe according to the embodiment of the present invention. [Figure 6] FIG. 6 is a partially enlarged view of FIG. 5 showing a tie tamper attachment of the rail-road backhoe. [Figure 7] FIG. 7 is a diagram showing an image of an operation screen of an operation panel installed on the rail-mounted backhoe. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a track lifting device according to the present invention will be described in detail below with reference to the drawings.

[0023] [Railway hoisting device] A track lifting device 1 according to an embodiment of the present invention (hereinafter simply referred to as track lifting device 1) will be described with reference to Figures 1 to 4. Figure 1 is a perspective view showing the track lifting device 1 according to the embodiment of the present invention, and Figure 2 is a front view showing the track lifting device 1 according to this embodiment. Also, Figure 3 is a right side view showing the track lifting device 1 according to this embodiment, and Figure 4 is a plan view showing the track lifting device 1 according to this embodiment.

[0024] The track lifting device 1 of this embodiment is a device that lifts up the left and right rails R1, R2 fixed to concrete or wooden sleepers S1 of a track R (rail frame) that has dropped and moved out of its correct position, and returns each rail R1, R2 that has moved from the correct height to its correct position.

[0025] As shown in Figures 1 to 4, the track lifting device 1 is based on a frame 10 attached to a rail-mounted backhoe 100 described below, and is equipped with a pair of left and right clamp claws 2, 2 for hooking each of a pair of left and right rails R1, R2, a pair of left and right lifting jacks 3, 3 for pushing up the clamp claws 2 hooked to each rail, a pair of left and right swinging jacks 4, 4 for swinging the clamp claws 2 together with the lifting jacks 3 and inserting them below the rails R1, R2, and a cant measurement mechanism 5 for measuring the difference in elevation between the pair of left and right rails R1, R2.

[0026] (Clamp jaws) The clamp claw 2 is composed of a steel or metal surrounding box plate 20 in the shape of a square tube with one side open that surrounds the lift jack 3 described below, and a protrusion 21 with an L-shaped cross section that protrudes from the surrounding box plate 20, with the tip of the protrusion 21 being a claw-shaped claw portion 21a.

[0027] The surrounding box plate 20 is pivotally supported on the frame 10 so as to be freely swingable, and is rotatably connected at its upper part to a connecting portion of a swing jack 4 (described later). Therefore, as shown in FIG. 2, the surrounding box plate 20 is configured to be freely swingable within a range of about 90° by the swing jack 4 together with the boost jack 3 (described later).

[0028] (Lifting jack) The lifting jack 3 is composed of a cylinder body 30, which is a hydraulic cylinder inserted in the aforementioned surrounding box plate 20, a cylinder rod 31 that is hydraulically extended and retracted from the cylinder body 30, and a jack base 32 attached to the tip of the cylinder rod 31. The jack base 32 functions as a bearing plate that transmits pressure to a wide area of ​​the ground, such as ballast.

[0029] This lifting jack 3 has a function in which a cylinder rod 31 extends and retracts from a cylinder body 30 using hydraulic pressure, and the jack base 32 transmits hydraulic pressure to unstable ground such as ballast, thereby pushing up the clamp claw 2 together with the surrounding box plate 20, and lifting up the rail (rail R1 or rail R2) hooked to the claw portion 21a of the clamp claw 2.

[0030] (swing jack) Like the lifting jack 3, the oscillating jack 4 is composed of a cylinder body 40 which is a hydraulic cylinder, a cylinder rod 41 which is hydraulically extended and retracted from the cylinder body 40, and a connecting part 42 which is attached to the tip of the cylinder rod 41 and connects to the surrounding box plate 20.

[0031] In addition, one longitudinal end of the cylinder body 40 is rotatably supported by a swing bracket 11 attached to the upper end of the frame 10, and the swing jack 4 itself is configured to be swingable relative to the frame 10.

[0032] This swing jack 4 hydraulically projects and retracts a cylinder rod 41 from a cylinder body 40, thereby moving a connecting part 42 attached to the tip of the cylinder rod 41. Therefore, the swing jack 4 pushes and pulls the surrounding box plate 20 rotatably supported by this connecting part 42, and swings the clamp claw 2 together with the surrounding box plate 20 and the pressure jack 3 relative to the frame 10 within a range of about 90° as shown in Fig. 2, and has the function of inserting the claw-shaped claw part 21a of the clamp claw 2 below each rail (rail R1 or rail R2).

[0033] (Kant Measurement Mechanism) The cant measurement mechanism 5 includes a cant measurement rod 50 that is spanned between the upper ends of rails R1 and R2, a cant measurement device 51 that abuts against the upper end of the cant measurement rod 50 to measure the difference in height between the left and right rails, and a cant lifting jack 52 that hydraulically moves the cant measurement rod 50 up and down to raise and lower it.

[0034] The cant measuring rod 50 is made of angle-shaped steel and has a pair of measuring wheels 53, 53 attached to the underside of both longitudinal ends, which abut against the aforementioned rails R1, R2. It can be raised and lowered by a cant lifting jack 52, so that the measuring wheels 53 can be brought into contact with or out of contact with the upper end of rail R1 or rail R2.

[0035] The cant measurement device 51 is a device that measures the difference in height (height difference: cant) from the top end of a reference rail (rail R1 or rail R2) to the top end of the other rail, taking into account the distance to the measuring wheel 53 by the length of the protrusion of a rod whose tip abuts against the upper end of the cant measurement rod 50 and is freely protruding and retracting.

[0036] Similar to the push-up jack 3, the cant lifting jack 52 has the function of raising and lowering the cant measuring rod 50 by hydraulically extending and retracting the cylinder rod from the hydraulic cylinder, thereby allowing either of the pair of left and right measuring wheels 53, 53 to freely abut against or retract from the rail (rail R1 or rail R2).

[0037] [Rail-road backhoe] Next, a rail-road backhoe 100 according to an embodiment of the present invention (hereinafter, simply referred to as the rail-road backhoe 100) will be described with reference to Figures 5 and 6. Figure 5 is a side view showing the rail-road backhoe 100 according to this embodiment, and Figure 6 is a partially enlarged view of Figure 5 showing the tamper attachment 140 of the rail-road backhoe 100.

[0038] As shown in FIG. 5, the rail-mounted backhoe 100 has a bucket capacity of 0.25 m 3 This is a rail-mounted backhoe that can travel on a track (rail R) and on land, and is based on a small backhoe of about 150 mm in size and is equipped with a crawler mechanism 110 for traveling on land, a wheel mechanism 120 for traveling on the rail R, and a wheel rocking mechanism 130 that rocks the wheel mechanism 120 to raise and lower it.

[0039] (Crawler mechanism) The crawler mechanism 110 is composed of a pair of front and rear drive wheels 111 and 112, and a rubber endless belt 113 attached to the front and rear drive wheels 111 and 112. The crawler mechanism 110 is a mechanism for traveling on land other than on rail tracks by driving the front and rear drive wheels 111 and 112 with a motor to rotate the endless belt 113.

[0040] (wheel mechanism) The wheel mechanism 120 is equipped with steel front wheels 121 and rear wheels 122 for running on rails, each having a flange on the inside to prevent the wheels from coming off. The front wheels 121 are rotated and driven by a hydraulic motor, allowing the wheel mechanism to run on the track R in cooperation with the driven rear wheels 122.

[0041] (Wheel rocking mechanism) The wheel rocking mechanism 130 is equipped with a front wheel rocking mechanism 131 that rotates and rocks the front wheels 121 in one direction, and a rear wheel rocking mechanism 132 that rocks the rear wheels 122 in the opposite direction to the front wheels 121.The front wheel rocking mechanism 131 and the rear wheel rocking mechanism 132 rock the front wheels 121 and the rear wheels 122 so that their lower ends are positioned lower than the lower end of the crawler mechanism 110, thereby raising and lowering the front wheels 121 and the rear wheels 122 to switch between running with the crawler mechanism 110 and running with the wheel mechanism 120.

[0042] (Railway hoisting device) 5, the above-mentioned track lifting device 1 is mechanically detachably attached to the front of the front wheels 121 of the rail-mounted backhoe 100 by bolts or the like. Moreover, as shown in FIG. 2, the track lifting device 1 fits within the vehicle gauge indicated by the two-dot chain line on the track when the clamp claws 2 are lifted by the swing jack 4, and the rail-mounted backhoe 100 can run on the track R by the wheel mechanism 120 with the track lifting device 1 attached, so no separate means for transporting the track lifting device 1 is required.

[0043] (Tie tamper device) Furthermore, as shown in Figs. 5 and 6, the rail-road backhoe 100 is equipped with a tamper attachment 140 for tamping down the track bed and ballast, attached to the bucket portion of the backhoe, which serves as the base.

[0044] The illustrated tamper attachment 140 is a so-called four-headed tamper device having four claws 141, and has the function of generating vibrations using a vibration-generating hydraulic motor 142 with the four claws 141 inserted into the ballast of the roadbed, thereby compacting the ballast.

[0045] <Railway hoisting method> Next, a railroad track lifting method according to an embodiment of the present invention will be described with reference to Figs. 1 to 7. A case where a railroad track R is lifted by a railroad backhoe 100 equipped with the above-mentioned railroad track lifting device 1 will be described as an example. Fig. 7 is a diagram showing an image of an operation screen of an operation panel installed on the railroad backhoe 100.

[0046] (Transportation process) As shown in Figure 5, in the track lifting method of this embodiment, the rail-mounted backhoe 100 equipped with the track lifting device 1 swings using the front wheel swinging mechanism 131 and the rear wheel swinging mechanism 132 so that the lower ends of the front wheels 121 and the rear wheels 122 are positioned lower than the lower end of the crawler mechanism 110, and travels on the track R using the wheel mechanism 120 to perform a transport process to transport the track to the lifting work site.

[0047] Thus, in the track lifting method according to this embodiment, the track lifting device 1 is driven onto the track R by the rail-mounted backhoe 100, which is mechanically and firmly connected by bolts or the like, and transported to the lifting work site, so there is no need to manually transport a cart onto the track and place it there, as in the track lifting devices described in Patent Documents 1 and 2. Therefore, in the track lifting method according to this embodiment, the track lifting device 1 can be easily transported by the driver of the rail-mounted backhoe 100 alone, reducing the number of workers and reducing labor costs.

[0048] (Cant measurement device contact process) In the track lifting method according to this embodiment, upon arriving at the lifting work site, the hydraulic switch button shown by arrow (1) in Fig. 7 is pressed to switch the hydraulic pressure so that the track lifting device 1 can be operated. Specifically, pressing the thrust device button allows the track lifting device 1 to be operated, and pressing the release button allows the tie tamper device (tietamper attachment 140) to be operated.

[0049] Then, after making the track lifting device 1 operable, the measurement lift button shown by the arrow (2) in Fig. 7 is pressed to operate the cant lifting jack 52 and lower the cant measurement mechanism 5 to abut against the rail, thereby carrying out the cant measurement device abutment process. The part to be operated in the track lifting device 1 can be selected by pressing the button shown by the arrow (2) in Fig. 7. When the button shown by the arrow (2) in Fig. 7 is pressed, the part to be operated is selected and the button lights up, and when the same button is pressed again, the selection is cancelled and the light goes out.

[0050] Furthermore, when the cant measurement mechanism 5 descends and the measuring wheel 53 comes into contact with either rail (rail R1 or rail R2), the cant measurement starts and is displayed in plus (+) or minus (-) mm units. At this time, by pressing the reference buttons on the left and right as indicated by the arrow (3) in Fig. 7, the display can be switched between the right rail R1 reference and the left rail R2 reference, and plus (+) or minus (-) is displayed depending on whether the cant is higher or lower than the reference rail.

[0051] (Clamp jaw swing process) Next, in the track lifting method according to this embodiment, the swing jack 4 to be moved is selected by pressing either the left clamp button or the right clamp button shown by the arrow (2) in Fig. 7 according to the rail to be lifted. Then, the swing jack 4 is operated to swing the surrounding box plate 20 and the clamp claw 2 by about 90° relative to the frame 10, and the clamp claw swinging process is performed in which the claw portion 21a of the clamp claw 2 is inserted below the rail R1 or rail R2.

[0052] (Railway hoisting process) Next, in the track lifting method according to this embodiment, the lifting jack 3 to be moved is selected by pressing either the left jack or the right jack button shown by the arrow (2) in Fig. 7. Then, the lifting jack 3 is operated to lift up the clamp claw 2 together with the surrounding box plate 20, thereby performing the track lifting process of lifting up the rail (rail R1 or rail R2) hooked to the claw portion 21a of the clamp claw 2.

[0053] At this time, in the track lifting method according to this embodiment, the inclination measurement value (cant relative to the reference rail) is displayed in the portion indicated by the arrow (3) in Figure 7, so that the driver of the rail-mounted backhoe 100 can operate the lifting jack 3 while checking in real time how far he or she should operate it by looking at the operation screen on the operation panel.

[0054] Therefore, according to the track lifting method of this embodiment, it is possible to use a portion of the rails of the track R that has been confirmed to be in the correct position (height) as a reference and sequentially lift the other portions of the rails. In other words, according to the track lifting method of this embodiment, unlike the conventional track lifting devices described in Patent Documents 1 and 2, there is no need for the worker who measures and checks the laser level and the worker who operates the track lifting device to work together in close contact with each other.

[0055] In short, according to the railroad track lifting method of this embodiment, the lifting work can be easily performed in a short time by a single worker who is the driver of the rail-mounted backhoe 100. Moreover, since measurements can be made in real time in millimeters, there is little risk of human error such as misreading the laser level, and the lifting work can be performed extremely accurately.

[0056] (Cant measurement device withdrawal process) Next, in the track lifting method according to this embodiment, the measurement lifting button shown by arrow (2) in Fig. 7 is pressed during the compaction process after the track lifting process when measurement is not being performed, and the cant lifting jack 52 is operated to raise the cant measurement mechanism 5 and move the measuring wheel 53 away from the top end of rail R1 or rail R2 to perform a cant measurement device retraction process. This is to prevent vibrations from the tie tamper device in the compaction process described below from being directly transmitted to the cant measurement device 51, which is a precision machine, via the rail.

[0057] (tamping process) Next, in the track lifting method according to this embodiment, the release button of the hydraulic switch button indicated by the arrow (1) in FIG. 7 is pressed to enable operation of the tie tamper device (tietamper attachment 140).

[0058] Then, with the four claws 141 of the tie tamper attachment 140 stuck into the ballast on the track bed beside the track R, a compaction process is performed in which the ballast is compacted by generating vibrations using a vibration-generating hydraulic motor 142 (see Figs. 5 and 6). This process prevents the rails corrected to the correct height in the track lifting process from sinking, completing the maintenance work related to track lifting and the track lifting method according to this embodiment.

[0059] In this way, in the track lifting method of this embodiment, the tamper attachment 140 is operated using the hydraulic pressure of the rail-mounted backhoe 100 to compact the ballast, eliminating the need to manually operate a handheld tamper device as in the conventional method, and preventing vibrations that can have adverse effects on the human body, allowing the compaction work to be completed easily and in a short time.

[0060] Furthermore, in the railroad track lifting method according to this embodiment, compared to the railroad track lifting method described in Patent Document 2, there is no need for a worker who watches the laser level and a worker who operates the tie tamper device at a distance from the worker to communicate with each other, and the compaction work can be performed by a single worker who is the driver of the rail-mounted backhoe 100. Therefore, in this respect as well, the number of workers can be reduced, and labor costs can be reduced.

[0061] According to the track lifting device 1, rail-mounted backhoe 100, and track lifting method using them according to the present embodiment described above, the swing jack 4 swings the clamp claw 2 and inserts it under the rail (right rail R1 or left rail R2), and the cant measurement mechanism 5 measures the difference in height between one rail and the other rail based on the other rail, while the push-up jack 3 hooks the dropped rail with the clamp claw 2 and pulls it up to the correct position, so that maintenance work related to track lifting can be completed in a short time and the number of workers required can be reduced as much as possible. This makes it possible to reduce the total number of workers engaged in track lifting work and reduce labor costs.

[0062] Furthermore, with the track lifting device 1, rail-mounted backhoe 100, and track lifting method according to this embodiment, the driver of the rail-mounted backhoe 100 can operate the lifting jack 3 while checking in real time how far it should be operated while looking at the operation screen of the operation panel. Therefore, the lifting work can be easily performed in a short time by the driver of the rail-mounted backhoe 100 alone. Moreover, since measurements can be made in mm in real time, there is little risk of human error such as misreading the laser level, and the lifting work can be performed extremely accurately.

[0063] Furthermore, according to the track lifting device 1, rail-mounted backhoe 100, and track lifting method of this embodiment, the cant measurement mechanism 5 is retracted from the rails when compaction work is performed with the tie tamper device (tie tamper attachment 140), so that the vibrations of the tie tamper device are not transmitted directly to the cant measurement device 51, which is a precision machine, via the rails, and the cant measurement device 51 can be protected.

[0064] Furthermore, according to the rail-road backhoe 100 and track lifting method of this embodiment, the four claws 141 of the tamper attachment 140 attached to the arm of the hydraulically operated rail-road backhoe 100 are inserted into the ballast on the roadbed beside the track R, and vibrations are generated by a vibration-generating hydraulic motor 142 to compact the ballast. This eliminates the need to manually operate a handheld tamper device to compact the ballast, as in the conventional method, and allows the compaction work to be performed easily and in a short time.

[0065] Although the railroad track lifting device 1, the railroad backhoe 100, and the railroad track lifting method according to the embodiment of the present invention have been described in detail above, the above-mentioned and illustrated embodiments are merely examples of the present invention. Therefore, the technical scope of the present invention should not be interpreted as being limited by these. [Explanation of symbols]

[0066] 1: Track hoisting device 2: Clamp claw 20: Enclosed box plate 21:Protrusion 21a: Claw part 3: Push-up jack 30: Cylinder body 31: Cylinder rod 32: Jack base 4: Swing jack 40: Cylinder body 41: Cylinder rod 42:Connection part 5: Kant measurement mechanism 50: Cant measuring rod 51: Cant measurement device 52: Lifting jack 53: Measuring wheel 10: Frame 11: Swing bracket 100: Railroad backhoe 110: Crawler 111: Driven front wheel 112: Driven rear wheel 113: Endless belt 120: Wheel mechanism 121: Front wheel 122: Rear wheel 130: Wheel swing mechanism 131: Front wheel rocking mechanism 132: Rear wheel rocking mechanism 140: Tie tamper attachment (tie tamper device) 141: Claw part 142: Hydraulic motor R: Railroad track (rail frame) R1: Right rail (rail) R2: Left rail (rail) S1: Sleepers

Claims

1. A track lifting device that returns a rail of a track that has moved from the normal height to the normal height and corrects it, The device is provided with a pair of left and right clamp claws for latching each of a pair of left and right rails, a pair of left and right lifting jacks for pushing up the clamp claws latched to each rail, a pair of left and right swinging jacks for swinging the clamp claws together with the lifting jacks and inserting them below the rails, and a cant measuring mechanism for measuring the height difference between the pair of left and right rails. A track lifting device characterized by the above.

2. The cant measurement mechanism is configured to have a cant lifting jack and to be raised and lowered, to come into contact with the rail during measurement, and to be able to move away from the rail and retreat when not measuring.

2. The track lifting device according to claim 1,

3. The cant measurement mechanism includes a cant measurement rod that is bridged between the upper ends of a pair of left and right rails, a cant measurement device that comes into contact with the upper end of the cant measurement rod to measure the height difference between the left and right rails, and a cant lifting jack that moves the cant measurement rod up and down to lift and lower it, The cant measuring rod is lifted and lowered by the cant lifting jack so that it can come into contact with or not come into contact with the rail.

3. A track lifting device according to claim 2, characterized in that

4. A rail-mounted backhoe including a crawler mechanism for traveling on land, a wheel mechanism for traveling on a railroad track, and a wheel swing mechanism for swinging the wheel mechanism to raise and lower the railroad track; A track lifting device according to any one of claims 1 to 3 is attached to a front wheel rocking mechanism that rocks the front wheels of the wheel rocking mechanism. A rail-mounted backhoe characterized by:

5. The bucket of the backhoe is equipped with a tamper attachment that compacts the roadbed and ballast. The rail-mounted backhoe according to claim 4,

6. A method for raising a rail track by returning the rail of a rail track that has moved from the normal height to the normal height, comprising the steps of: A transporting process of transporting the track lifting device to a site of track lifting work by traveling on the track with the rail-mounted backhoe according to claim 4; a clamp claw swinging step of operating the swing jack to insert the clamp claw below the rail; and a track lifting step of lifting the rail hooked on the clamp claw by operating the lifting jack while measuring the cant with respect to a reference rail by the cant measuring mechanism. A method of lifting a track, comprising:

7. The method includes a compaction step of compacting the ballast by vibrating the tamper attachment of the rail-road backhoe according to claim 5.

7. The method for lifting a line according to claim 6, further comprising the steps of:

8. The cant measuring mechanism is moved away from the rail before the compaction step by operating a cant lifting jack of the track lifting device according to claim 2 or 3.

8. The method for lifting a line according to claim 7, further comprising the steps of:

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