JP7220839B2 - Track lifting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail hoisting device using a rail backhoe provided with a tie tamper for tamping railroad ballast (crushed stone) at the tip of an arm.

As a conventional track lifting device for lifting a track composed of a sleeper and a pair of rails, for example, there is a truck capable of traveling on the pair of rails and a track provided on the truck for lifting the track together with the truck. The hoisting mechanism is supported on both sides of the carriage so as to be freely opened and closed in a direction perpendicular to the traveling direction of the carriage, and has a claw piece at its tip that engages with each rail when closed. A pair of pawl mechanisms, a drive mechanism for opening and closing each pawl mechanism in conjunction with each other, and a pair of elevating jacks provided on both sides of the carriage. A track lifting device has been proposed that has an elevating unit that is pushed up by a reaction force from the ground against a platform (see, for example, Patent Document 1).

In this conventional rail lifting device, the pawl mechanism is supported on the truck so that it can be freely opened and closed, and is connected to the elevating portion of the lifting jack. When the platform of the lifting jack is pressed against the ground in a state of being engaged with the rail and the lifting part is pushed up by the reaction force, the lift of the lifting jack lifts the track consisting of the rail and the sleepers. .

JP 2017-36617 A

However, although the conventional track lifting device of Patent Document 1 mentioned above discloses the track lifting device itself, the tie tamper device itself for tamping ballast (crushed stone) and the track lifting device are not compatible. Since the relationship is not disclosed at all, it is necessary for another worker to move the rail lifting device and the tie tamper device, which poses a problem that the burden of the rail lifting work is heavy.

Further, in the conventional rail lifting device of Patent Document 1 described above, an auto-level light receiver is attached to the rear side of the rail lifting mechanism on the floor of the truck of the rail lifting device, An auto-level light-emitting device is installed on the track that has already been maintained behind the truck of the device, and the infrared rays emitted from the auto-level light-emitting device are received to determine the amount of lifting (lifting amount) of the track. If the track is being laid while moving from one work site to another, it is necessary to move the auto-level light emitter and make adjustments to ensure that the emitted infrared light is accurately emitted to the auto-level light receiver. In this respect as well, there was a problem that the burden of the work on the rail was large.

Therefore, the present invention has been made by paying attention to such problems, and is capable of reducing the burden on workers who perform rail lifting work including ballast tamping work. The purpose is to provide an apparatus.

In order to solve the above-mentioned problems, a rail hoisting device according to the present invention includes a rail backhoe provided with a tie tamper part for tamping ballast at the tip of an arm, a rail backhoe connected to the rail backhoe through a first connecting member, A track lifting carriage which travels on the rail according to the running of the track backhoe and clamps the rail to lift the track consisting of the rail and the sleepers; and a second connecting member to the track lifting trolley. and travels on the rail between the rail backhoe and the rail carriage while being pulled by the rail carriage according to the running of the rail backhoe, and for level measurement and a laser carriage provided with a laser for level measurement that transmits a laser beam, and a laser receiver for receiving the level measurement laser of the laser carriage and displaying the level on the rail carriage. is provided.
Further, in the rail lifting device according to the present invention, the length of the first connecting member is longer than the length of the second connecting member, and the rail lifting carriage includes the While it is attached to the front of the rail backhoe via a first connecting member at a first predetermined interval, the laser trolley is positioned forward of the rail backhoe via the second connecting member. The tie tamper of the rail backhoe, which is attached at the rear of the trolley for rolling stock with a second predetermined interval, performs ballast tamping work, etc. between the trolley for rolling trolley and the carriage for laser. It is also characterized by performing
Further, in the track lifting device according to the present invention, the track lifting trolley comprises a track lifting trolley main body provided with wheels that run on rails, and a track lifting trolley main body. A rail clamp mechanism that is provided on both the left and right sides, rotates above the left and right rails by hydraulic operation from the rail backhoe, and hooks the rail clamp part to each rail from the outside of the left and right rails, and the rail clamp mechanism from the rail backhoe. a rail lifting mechanism for lifting and lowering the rail clamping mechanism clamping the rail by pressing the piston against the roadbed by hydraulic operation, wherein the laser receiver clamps the rail; It is also characterized in that it is attached to the rail clamp mechanism that moves up and down.

In the rail hoisting device according to the present invention, the rail backhoe is provided with a tie tamper portion for tamping ballast at the tip of the arm, and the rail backhoe is connected to the rail backhoe through the first connection member, and the rail backhoe moves on the rail according to the traveling. While traveling, it is connected to the track lifting truck that clamps the rail and lifts the track consisting of the rail and the sleeper, and the track lifting truck is connected through the second connection member, and the track backhoe travels A laser equipped with a laser for level measurement that transmits a laser beam for level measurement while traveling on the rail between the track backhoe and the truck for track elevation while being pulled by the truck for track elevation according to the response. A laser receiver for receiving the laser for level measurement of the laser carriage and displaying the level is provided on the carriage for raising the rail.
Therefore, according to the present invention, when the rail backhoe travels along the rail, the rail carriage and the laser carriage can also travel and move along the rail in accordance with the travel of the rail backhoe. It is no longer necessary for a worker other than the backhoe operator (driver) to move the railcar and the laser car, which greatly reduces the burden on the workers who carry out the railcar work. can.

1 is a front view showing the overall configuration of a track lifting device according to an embodiment of the present invention; FIG. FIG. 2 is an enlarged front view of a main portion showing a schematic configuration of a track lifting carriage in a track lifting device according to an embodiment of the present invention, and connecting portions between the track lifting carriage and first and second connecting members; It is a diagram. FIG. 2 is an enlarged front view of a main part showing a schematic configuration of a laser carriage, a connection between the laser carriage and a second connection member, and a connection portion between a rail backhoe and a first connection member in the rail hoisting device according to the embodiment of the present invention; be.

DETAILED DESCRIPTION OF THE INVENTION A track lifting device according to an embodiment of the present invention will be specifically described below with reference to the drawings. It should be noted that the embodiment described below is merely an example of the present invention, including the shape and dimensions, and the track lifting device of the embodiment according to the present invention may be changed as appropriate within the scope of the technical idea of the present invention. It is possible.

<Configuration of track lifting device of embodiment>
As shown in FIGS. 1 and 2, the rail hoisting device according to the embodiment of the present invention includes a rail backhoe 1 provided with a tie tamper portion 12c for tamping ballast at the tip of an arm, and a first A track lifting carriage 2 which is connected via a connecting member 4 and travels on the rail according to the running of the rail backhoe 1 and clamps the rail to lift the rail and the sleeper. It is connected to the carriage 2 for raising the rail through the second connection member 5, travels on the rail while being pulled by the carriage 2 for raising the rail according to the running of the rail backhoe 1, and transmits a laser beam for level measurement. A laser carriage 3 provided with a level measurement laser is provided.

(Rail-track backhoe 1)
As shown in FIGS. 1 and 2, the rail backhoe 1 is provided with front wheels 11a1 for traveling on rails R, R, which can be raised and lowered, and a rear wheel support elevation section 11a, which is provided with rear wheels 11b1, which can be raised and lowered. portion 11b and a location other than the rail R, in particular the two rails R. A traveling portion main body 11 provided with crawlers 11c for traveling on both sides of R, and a working arm 12a provided rotatably with respect to the traveling portion main body 11 and extendable and retractable, and a driver's seat A well-known rail and land backhoe having a working part main body 12 that performs work such as tamping ballast on the track bed by the attachment of the tie tamper part 12c attached to the tip of the working arm 12a by the operation of the worker riding on the track 12b. It is a tie tamper device.

The front wheel support elevating section 11a has a length of, for example, about 3 m to 5 m, and as shown in FIGS. One end of the first connecting member 4, which is connected at a predetermined interval, is connected via a connecting portion 11a2 so as to be rotatable in the vertical and horizontal directions.

The tie tamper part 12c uses a so-called four-headed tie tamper, and has a well-known configuration for tamping the ballast with four claws 12c1.

(Track carriage 2)
As shown in FIGS. 1 and 2, the rail carriage 2 is pivoted vertically and horizontally on the front wheel support elevating portion 11a of the rail backhoe 1 via a first connecting member 4 having a length of about 3 m to 5 m. It is freely connected and runs on the rails R, R by being pushed by the rail backhoe 1. Four wheels 2a1 running on the rails R, R are provided, and the tip of the first connecting member 4 is A rail backhoe 1 provided on the left and right sides of the rail carriage main body 2a provided with a connecting portion 2a2 that is connected to be rotatable in any of the vertical and horizontal directions; A rail clamping mechanism 2b that rotates above the left and right rails R, R by hydraulic operation from the left and right rails R, and hooks the rail clamps 2b1, 2b1 to the respective rails R, R from the outside of the left and right rails R, R. , The piston part 2c2 is moved in and out from the cylinder part 2c1 by hydraulic operation from the rail backhoe 1, the ground plate 2c3 at the lower end of the piston part 2c2 is pressed against the roadbed, etc., and the rail R is clamped by the rail clamp part 2b1. It has a clamping mechanism 2b and a rail lifting mechanism 2c for raising and lowering the rail lifting carriage body 2a.

In addition, when the track lifting mechanism 2c moves, that is, when the track lifting carriage 2 travels on the rail R, the ground contact plate 2c3 at the lower end of the piston 2c2 interferes with the sleepers M, ballast, etc. Since there is a possibility that it may become distorted, it is rotated by 90 degrees and laid horizontally as indicated by the two-dot dashed line in FIG.

In addition, measurement rods 2d are provided on both the left and right sides of the track lifting truck main body 2a, respectively. A laser receiver 2e is provided for receiving the level-measuring laser transmitted from the level-measuring laser transmitter 3b. The height of the laser receivers 2e, 2e themselves and the difference in height between the laser transmitter 3b for level measurement and the left and right laser receivers 2e, 2e are displayed on a digital display or the like, and a nearby worker can read the display. The left and right rails R and the sleepers M can be raised to the left and right rail lifting mechanisms 2c, 2c by operating a remote controller (not shown) or the like so as to eliminate the height difference. there is The rail clamping mechanism 2b is attached to the rail lifting carriage main body 2a, and is lifted by the rail lifting mechanism 2c together with the rail lifting carriage main body 2a. A measuring rod 2d and a laser receiver 2e may be provided.

(Laser cart 3)
The laser carriage 3 is connected to the rail carriage 2 via a second connecting member 5, and is pulled by the rail carriage 2 as the rail backhoe 1 travels. It runs on rails R between it and the carriage for lifting 2, and is provided with four wheels 3a1 that run on the rails R, R. A connecting portion 3a2 is provided to be rotatably connected in a direction, and a laser trolley main body 3a that travels on the rails R, R by being pulled by the track lifting trolley 2, and on the laser trolley main body 3a It is installed at almost the same height as the laser receivers 2e provided on the left and right sides of the track lifting truck main body 2a through the inspection rods 2d, respectively, and the level measurement is performed for the left and right laser receivers 2e, 2e, respectively. and a level measuring laser transmitter 3b for transmitting a laser.

Here, the length of the second connecting member 5 is determined according to the length of the rail backhoe 1 in order to secure space for ballast tamping work by the tie tamper portion 12c of the four-head tie tamper attached to the tip of the working arm 12a of the rail backhoe 1. Between the carriage 2 and the carriage 3 for laser, for example, there is a second predetermined gap of about 1.5 m to 2 m. For example, it has a length of about 2 to 3 m, which is shorter than the length of the first connecting member 4, which is about 5 m.

In addition, the laser transmitter 3b for level measurement can be provided in the front wheel support elevating section 11a of the rail backhoe 1 depending on the height and location. The reason why the laser transmitter 3b is provided on the laser trolley 3 separate from the rail backhoe 1 and not provided in the front wheel support elevating section 11a of the rail backhoe 1 is that if the laser transmitter 3b is provided in the front wheel support elevating section 11a of the rail backhoe 1, Vibration during operation of the rail backhoe 1 is transmitted to the laser transmitter 3b for level measurement, so it is easy to break down, and the direction and angle of the laser transmitted by the laser transmitter 3b for level measurement are easily shaken. Since 11a moves up and down, the direction and angle of the laser transmitted (irradiated) by the level detection laser transmitter 3b can be reset, for example, the laser can be transmitted (irradiated) in the horizontal direction, and the left and right laser receivers 2e, 2e can be reconfigured. This is because laser transmission (irradiation) is difficult, which makes it difficult to accurately and quickly move the rail.

In addition, the laser carriage 3 is configured to run on the rails R, R while being pulled by the rail carriage 2 via the second connecting member 5, and like the rail carriage 2, the first The reason why it is not connected to the front wheel support elevating portion 11a of the rail backhoe 1 via the connecting member 4 is that when it is connected to the rail backhoe 1, the rail backhoe 1 is closer to the rail backhoe 1 than the rail carriage 2. This is because vibration during operation is transmitted more easily to the laser carriage 3 than to the rail carriage 2 . In addition, a laser transmitter 3b for level measurement is installed on the laser carriage 3, and is installed on the laser carriage 3 so that vibrations during operation of the rail backhoe 1 are not directly transmitted to the laser carriage 3. This is so as not to adversely affect the direction, angle, etc. of the level-measuring laser transmitter 3b itself that is transmitted by the level-measuring laser transmitter 3b.

(First connecting member 4)
As described above, the first connecting member 4 is, for example, a long member using a steel pipe or the like having a length of about 3 m to 5 m. and the connecting portion 2a2 of the main body 2a of the track lifting carriage 2 are connected to each other by connecting pins 11a3, 2a3 so as to be rotatable in the vertical and horizontal directions. Movable connecting plates 4a, 4b are provided. In FIG. 3, reference numeral 11a4 denotes a connecting pin when the connecting pin 11a3 is removed from the connecting portion 11a2 of the front wheel support elevating portion 11a of the rail backhoe 1 and the rail backhoe 1 and the rail carriage 2 are separated. It is a pin loss prevention chain that connects the connecting pin 11a3 to the front wheel support lifting part 11 of the rail backhoe 1 in order to prevent the loss of 11a3.

(Second connecting member 5)
As described above, the second connecting member 5 is, for example, a short member using a steel pipe or the like having a length of about 2 m to 3 m. and the connecting portion 2a2 of the main body 2a of the track lifting carriage 2 are connected to each other by connecting pins 3a3, 2a3 so as to be rotatable in the vertical and horizontal directions. Movable connecting plates 5a and 5b are provided.

<Operation of the track lifting device according to the embodiment of the present invention>
Next, the operation of the track lifting device according to the embodiment of the present invention configured as described above will be described.

(moved to the work site of the railroad hoisting work)
When moving to a track lifting work site, the track lifting device of the embodiment lowers the front wheels 11a1 and rear wheels 11b1 of the track backhoe 1 below the crawler 11c for a long distance. 11b1 is driven to travel on the rails R, R by the front wheels 11a1 and the rear wheels 11b1.

On the other hand, if the distance is short, the front wheels 11a1 and rear wheels 11b1 of the backhoe 1 are raised above the crawler 11c to drive the crawler 11c. Move by traveling on the roadbed, etc. outside the R and R.

As a result, the front wheel support lifting portion 11a on the front side of the rail backhoe 1 is connected to the rail carriage 2 via the first connecting member 4 having a length of about 3 m to 5 m as shown in FIGS. On the other hand, the laser carriage 3 is connected to the rear of the rail carriage 2 through a second connecting member 5 having a length of about 2 m to 3 m, so that the rail backhoe 1 can be moved. As a result, the track lifting carriage 2 and the laser carriage 3 move together on the rails R, R while maintaining a constant interval.

Therefore, according to the track lifting device of the embodiment, it is not necessary to move each of the track backhoe 1, the track lifting carriage 2, and the laser carriage 3 by different workers. It is possible to reduce the burden of upper work.

(Raising work of the track)
When arriving at the track lifting work site, the track lifting truck 2 lifts (lifts) the track consisting of the rail R and the sleeper M, and the tie tamper portion 12c of the track backhoe 1 pushes the ballast. Hardening work and the like are performed. At that time, as shown in FIG. is grounded on the roadbed, etc., and the ballast is tamped down.

Here, for example, a worker near the track lifting truck 2 reads the level values of the laser receivers 2e, 2e on both the left and right sides of the track lifting truck 2, and raises and lowers the track while reading the level values of the laser receivers 2e, 2e. The amount of lifting (lifting amount) of the left and right rails is determined so as to eliminate the difference, etc. The left and right rails R, R are clamped by the rail clamping portions 2b1, 2b1 by outputting operation instructions to the rail clamping mechanism portions 2b, 2b, respectively, and the operation instructions are sent to the left and right rail lifting mechanism portions 2c, 2c, respectively. output, the piston portion 2c2 is pushed out from the cylinder portion 2c1, and the ground contact plate 2c3 at the lower end of the piston portion 2c2 is pressed against the roadbed or the like, and the determined track consisting of the rails R, R and sleepers M is raised. Lift up to the amount (lifting amount).

In addition, for ballast tamping work, a worker or the like in the vicinity of the rail carriage 2 contacts the driver of the rail backhoe 1 with a transceiver (not shown) or the like, and the driver of the rail backhoe 1 By operating the rail backhoe 1, the arm 11a is extended and lowered, and the tie tamper portion 12c of the arm 11a is lowered between the laser carriage 3 and the rail carriage 2, and the rail carriage is operated. While contacting the workers in the vicinity of 2, ram the ballast so that it reaches the rail lifting amount (lifting amount).

Here, the front wheels 11a1 and the rear wheels 11b1 are lowered from the crawler 11c, and while the front wheels 11a1 and the rear wheels 11b1 are placed on the rails R, R, the ballast is tamped by the tie tamper portion 12c of the rail backhoe 1. Vibration or the like during compaction of ballast is transmitted to the rails R, R via the front wheels 11a1 and the rear wheels 11b1 of the rail backhoe 1, and the trolley 2 and the carriage 2 on the rails R, R It is also transmitted to the laser carriage 3, and the amount of rail lifting (lifting amount) by the level measurement laser transmitter 3b of the laser carriage 3 and the laser receivers 2e, 2e of the rail lifting carriage 2 is determined. This is to prevent adverse effects from being exerted on precision machines such as the measurement, the laser transmitter 3b for level measurement and the laser receiver 2e.

Then, the track lifting work and the ballast tamping work are carried out by cooperation between a worker who is in the vicinity of the track lifting truck 2 and performs the track lifting work and the driver of the track backhoe 1. When the unevenness in height is eliminated, the driver of the on-rail backhoe 1 drives the left and right crawlers 11c, 11c to make the on-rail backhoe 1 travel forward and move to the next mooring work place.

Then, in the track lifting device of this embodiment, as described above, the track lifting truck 2 is connected to the track backhoe 1 via the first connection member 4, while the track lifting truck 2 is connected to the laser trolley 3 via the second connecting member 5, so that the rail trolley 2 and the laser trolley 3 are interlocked with the movement of the rail backhoe 1 to move the rails R, R. Since it is possible to run on the top, it is possible to reduce the burden of moving the rail lifting carriage 2 and the laser carriage 3 by the operator.

When the movement distance is long, the front wheels 11a1 and rear wheels 11b1 of the backhoe 1 are lowered below the crawler 11c as described above, and the front wheels 11a1 and rear wheels 11b1 are driven to drive the front wheels 11a1 and rear wheels 11b1. Even if the vehicle travels on the rails R, R, the rail backhoe 1 is connected to the rail carriage 2 via the first connecting member 4, while the rail carriage 2 has Since the laser trolley 3 is connected via the second connecting member 5, the burden of moving the rail lifting trolley 2 and the laser trolley 3 by the worker is reduced, and the operator can move to the next lifting work place. can do.

Then, when the next lifting work place is reached, a worker who is in the vicinity of the above-mentioned track lifting truck 2 and performs the lifting work of the track and the driver of the track backhoe 1 cooperate to perform the track lifting. The lifting work and ballast tamping work are repeated in the same manner.

<Summary of the track lifting device of the embodiment according to the present invention>

Therefore, in the rail hoisting device of the embodiment according to the present invention, the rail backhoe 1 provided with the tie tamper portion 12c for tamping the ballast at the tip of the arm 11a is connected to the rail backhoe 1 through the first connecting member 4. , a track lifting truck 2 which travels on the rail according to the running of the track backhoe 1 and clamps the rail R to lift the rail R and the sleepers M; A laser connected via a connecting member 5 and traveling on the rails R, R in conjunction with the rail carriage 2 according to the traveling of the rail backhoe 1, and provided with a laser transmitter 3b for level measurement. Laser receivers 2b, 2b for receiving a level measuring laser from a level measuring laser transmitter 3b of the laser trolley 3 and displaying the level. is provided.

Therefore, according to the rail lifting device of the embodiment of the present invention, when the rail backhoe 1 travels along the rails R, R with the one front wheel 11a1 and the rear wheel 11b1 or the crawler 11c, the rail lifting carriage 2 Since the laser carriage 3 can also travel along the rails, a worker other than the operator (driver) of the rail backhoe 1 moves the rail carriage 2 and the laser carriage 3. There is no need to move or reset the level transmission direction, transmission angle, etc. of the laser transmitter 3b for level measurement, which can greatly reduce the burden on the operator who carries out the track work.

In particular, in the rail hoisting device of the embodiment according to the present invention, the laser transmitter 3b for level measurement is provided on the laser carriage 3 separate from the rail backhoe 1, and the front wheel support elevating section 11a of the rail backhoe 1 that moves up and down. Therefore, it is possible to prevent failure of the level detection laser transmitter 3b due to vibration during operation of the rail backhoe 1 and fluctuation of the direction and angle of the laser transmitted (irradiated) by the level detection laser transmitter 3b. Unlike the case where it is provided in the front wheel support elevating part 11a that moves up and down, it is not necessary to reset the direction and angle of the laser of the laser transmitter 3b for level inspection. It can greatly reduce the burden on people.

Further, the laser trolley 3 equipped with the level measurement laser transmitter 3b is not connected to the track backhoe 1, but is connected to the track trolley 2 via the second connecting member 5. Since it travels on the rails R, R while being pulled by the hoisting cart 2, the level detection laser transmitter 3b will not be directly transmitted through the connecting member when the rail backhoe 1 is in operation. , it is possible to reduce the adverse effect on the accuracy of the direction, height, etc. of the level measurement laser transmitted by the level measurement laser transmitter 3b. Adverse effects of breakage can also be reduced.

Further, in the rail lifting device of the embodiment according to the present invention, the length of the first connecting member 4 is longer than the length of the second connecting member 5, and the rail lifting carriage 2 is attached to the front of the rail backhoe 1 via a first connecting member 4 with a first predetermined gap, while the laser carriage 3 is attached to the rail carriage 2 via a second connecting member 5. The tie tamper of the rail backhoe 1, which is attached at the rear with a second predetermined interval, performs ballast tamping work between the rail carriage 2 and the laser carriage 3.

Therefore, according to the track lifting device of the embodiment according to the present invention, when the track lifting work is continuously performed while the track backhoe 1 moves forward, the track lifting carriage 2 is used to move the track. The location where the lifting work was performed was such that when the laser carriage 3 connected via the second connecting member 5 passed behind the rail lifting carriage 2, the heights of the rails R, R and the sleepers M were raised. Since it is at the correct height after top-up work, it is possible to continuously perform track-raising work while moving the rail backhoe 1 forward even when the track-raising point is long. It is possible to greatly reduce the burden on the worker who is carrying out the lifting work today.

1 Track Backhoe 11 Running Unit Main Body 11a Front Wheel Support Elevating Unit 11a1 Front Wheel 11a2 Connecting Unit 11a3 Connecting Pin 11a4 Pin Loss Prevention Chain 11b Rear Wheel Support Elevating Unit 11b1 Rear Wheel 11c Crawler 12 Working Unit Main Body 12a Working Arm 12b Driver's Seat 12c Tie Tamper Unit 12c1 claw portion 2 rail lifting truck 2a rail lifting truck body 2a1 wheel 2a2 connecting portion 2a3 connecting pin 2b rail clamp mechanism portion 2b1, 2b1 rail clamp portion 2c rail lifting mechanism portion 2c1 cylinder portion 2c2 piston portion 2d measurement rod 2e laser receiver 3 laser carriage 3a laser carriage main body 3a1 wheel 3a2 connection part 3a3 connection pin 3b laser transmitter for level measurement 4 first connection member 4a, 4b first member rotatable connection plate 5 2 connecting members 5a, 5b second member rotatable connecting plate R rail M sleeper

Claims (2)

A rail backhoe with a tie tamper that tampers the ballast at the tip of the arm,
A track lifting carriage which is connected to the track backhoe via a first connecting member, travels on the rail in accordance with the running of the track backhoe, and clamps the rail to raise the track composed of the rail and sleepers. and,
It is connected to the rail backhoe via a second connecting member, and is pulled by the rail backhoe according to the running of the rail backhoe, between the rail backhoe and the rail backhoe. and a laser trolley provided with a level measurement laser that transmits a level measurement laser beam while traveling on the rail,
A track lifting device, wherein the track lifting carriage is provided with a laser receiver for receiving a level measuring laser of the laser carriage and displaying the level. In the track lifting device according to claim 1,
The length of the first connecting member is longer than the length of the second connecting member,
The rail carriage is attached to the front of the rail backhoe via the first connecting member with a first predetermined space therebetween,
The laser carriage is attached to the front of the rail backhoe and to the rear of the rail carriage via the second connecting member with a second predetermined gap therebetween,
A track lifting device, wherein a tie tamper of the rail backhoe performs ballast tamping work between the track lifting carriage and the laser carriage.

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