JP2007016451A - Gage/path rectifying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gage/path rectifying machine which causes a guide wheel running on a slab surface to share a load on a rail arising at the inner track side to improve the finish of rail rectification upon carrying out rectification work particularly in a cant section. <P>SOLUTION: The gage/path rectifying machine rectifies the gage of a slab track, and includes a traveling vehicle capable of traveling freely on the track and a rectifying work machine 20 which is supported and suspended at the front end of a boom 10 mounted on the front of the vehicle body and is lowered onto rails R (1, 2) on the track upon carrying out the work. The rectifying work machine 20 has two sets of left/right wheels which are located under a main frame 22 to travel on the rails R (1, 2). Auxiliary support guide wheels 64 and support members 60 for the support guide wheels 64 are mounted removably at the outside of the inner track side of the main frame 22, the support guide wheels 64 running on a slab surface Ta at front and rear positions in a travel direction to help and support the travel of the vehicle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gauge / street leveling machine that performs leveling of a slab track based on measurement data, and reduces the acting force due to the weight of the leveling work machine to facilitate rail leveling.・ It relates to street leveling machines.

  The gap between the railroad tracks and the streets are not limited to the curved portion due to the repeated running of the train, but also in the straight section. In order to maintain the traveling conditions of the train, it is necessary to correct this gap / street error. The work to correct the gap between the gauge and the street is based on one rail of the pair of left and right rails, loosening the fastening presser bolt that fixes the other rail in the required section, Based on the gauge data of the pair of left and right rails obtained by the measurement running on the track in the track, move the rail in the gauge direction and hold the state, tighten the fastening presser bolt and correct the distance between the left and right rails Yes.

  For such a slab track, the leveling machine that can mechanically adjust the distance between the rails and the street, move on the track, measure with the gauge, loosen and tighten the fastening presser bolt, Japanese Patent Application Laid-Open No. 2004-151867 discloses a method of adjusting the distance between the gauges and the streets to adjust the gauges. This leveling machine has a nut tightening mechanism attached to the front part of the running body that can run on the track, a nut runner that can tighten and loosen the clamp gauge and the tightening presser bolt, and is attached to the left and right sides. 1 rail clamp mechanism, a second rail clamp mechanism that is attached to the left and right other side parts so as to freely swing left and right, and an expansion / contraction mechanism that swings the second rail clamp mechanism left and right relative to the first rail clamp mechanism. The work machine frame that can travel along is configured to be connected to the front portion of the traveling vehicle by an arm so that the work frame can be lowered onto the track during work.

  Normally, the leveling work on the slab track with such a leveling machine is performed by loosening and tightening the fastening presser bolts at all tie plate positions where the left and right rails are fixed and held. Rather than performing the correction, for example, the rectification operation between the gauges and the streets is performed at tie plate positions every four pitches. For each preset section, first, loosen the fastening nut of the clamp bolt at the position where the other rail is adjusted with reference to one rail, and move the rail at the adjusted position to match the gauge. Move to the left and right, adjust the gauge, tighten the loosened nut, fix the tie plate with the fastening presser bolt, and perform the leveling work as the rail. In this way, when the rail on one side is adjusted in the planned work section, the work vehicle is reversed and this time, the nut of the fastening presser bolt is adjusted at the position where the other rail is adjusted based on the rail that has been corrected. Loosen and adjust the other rail to the right and left to match the gauge, based on the gauge data obtained in advance by the inspection vehicle, and then tighten the loosened nut. The operation of fixing the tie plate with the fastening presser bolt is sequentially performed to perform the leveling work.

Japanese Patent No. 3079165

  However, in the gauge and street leveling machine known from Patent Document 1, the leveling machine is lowered on the rail because the leveling machine is suspended and supported through the arm in front of the traveling vehicle body. When the leveling work is performed, there is a tendency to act in a direction to push open the rail in which the weight of the leveling machine is loosened. In particular, in the cant section (curved section), the rail on the inner rail side is lowered and arranged to be inclined outward, so that the self-weight of the leveling machine greatly acts on the rail on the inner rail side. It will be. Therefore, an extra corrective thrust is generated in order to counteract the acting force that acts in the direction of tilting the rail to be adjusted in that section.

For this reason, there are the following problems. First, the work time for correction becomes longer, and the work efficiency is lowered. Next, by performing adjustment with an extra force, there is a possibility that a residual deviation occurs in the rail at the following two points.
1) Since the rail fixing position by the tie plate is adjusted every 4 pitches with respect to the working direction and the nut of the fastening presser bolt is tightened, there is no binding force at the place where tightening is not performed.
2) As shown in FIG. 13, the positions of the straightening by the clamp device 101 of the straightening machine 100, the measurement by the gauge 102, and the tightening of the nut by the nut runner 103 do not coincide with each other. The inner width (distance between gauges) does not completely match.
That is, a large load acts on the guide wheels 104, 104 on the inner rail side that supports the leveling work machine 100 on the rail R, and the load sharing of the four guide wheels 104 is offset. Yes.

  The present invention has been made to solve such a problem, and in particular, during the calibration work in the cant section, the load on the rail generated on the inner rail side is shared by the guide wheels traveling on the slab surface. It is an object of the present invention to provide a gauge and street leveling machine that improves the level of rail leveling.

In order to achieve the above object, the gauge / street correction machine according to the present invention is:
It is a machine that adjusts the gap between slab tracks, and is supported by the traveling vehicle that can travel on the track and the tip of the boom provided at the front of the traveling vehicle so that it can be lowered onto the rail of the track during work. A leveling work machine suspended from the main frame, and the leveling work machine is provided with two sets of left and right wheels traveling on a rail at a lower part of the main frame, A support member suspended at the front and rear positions in the traveling direction is provided, and the support member is provided with auxiliary support guide wheels that travel on the slab surface.

  In the above invention, it is preferable that the auxiliary support guide wheels are arranged in the traveling direction at a required interval at the lower end portion of the support member (second invention). Further, it is preferable that the support member of the auxiliary support guide wheel is provided with a buffer mechanism that acts in the vertical direction (third invention).

  In the first invention or the third invention, the support member of the auxiliary support guide wheel may be detachably attached to the main frame of the leveling machine by a detachable mechanism (fourth invention). .

  In the present invention, the leveling machine is suspended from the tip of the boom provided at the front part of the traveling vehicle, and the leveling machine is suspended on the rail during the leveling work. If an auxiliary support guide wheel that can travel along the slab surface and its support member are installed on the outer side of the inner track side of the normal work machine, for example, it can be adjusted with respect to the rail laid in an inclined state such as a cant section. Even when the traveling guide wheels of the main work machine are mounted, the auxiliary support guide wheels share a part of the load, and the load is compensated without overloading the rail with respect to the direction of the rail collapse. Can perform work. Therefore, the load with respect to the direction in which the rail collapses is reduced, and the residual deviation after tightening the nut is reduced. As a result, the finished accuracy of rail correction is improved.

  According to the second aspect of the invention, when the leveling work machine travels, when the joint portion of the slab plate is crossed, one of the two auxiliary support guide wheels always comes into contact with the slab surface to share and support the load. Since the auxiliary support guide wheels always share the load with certainty, stable movement can be ensured. Further, if the configuration of the third invention is adopted, an appropriate grounding force is applied to the auxiliary support guide wheel traveling on the slab surface so that the wheel supporting the main frame on the rail does not lift. By doing so, it is possible to improve the followability to the rail together with the load sharing function, and as a result, it is possible to improve the leveling finish accuracy.

  Furthermore, by adopting the configuration of the fourth invention, it is possible to selectively use the auxiliary support guide wheels, for example, when removing the straight line section and performing the straightening work except when performing the straightening work in the cant section. it can.

  Next, specific embodiments of the gauge / straightening machine according to the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall side view of the gauge / street correction machine of the present embodiment. FIG. 2 shows a plan view of FIG. 3 is a plan view of the leveling machine, FIG. 4 is a view taken along line AA of FIG. 3, FIG. 5 is a front view of the nutrunner mechanism, and FIG. 6 is a plan view of FIG. FIG. 7A is a schematic diagram of the rail clamp device, FIG. 8 is a front view of the movable side rail clamp device, and FIG. FIG. 10 is a front view of the fixed-side rail clamp device, and FIG. 11 is a diagram showing the leveling work unit side of the leveling machine. It is shown.

  As shown in FIG. 1 to FIG. 3, the gauge / street correction machine 1 of the present embodiment includes a traveling vehicle 2 in which a vehicle body 7 is mounted on a lower traveling body 3 via a turning mechanism 6, and this traveling It is comprised by the front part of the vehicle main body 7 of the vehicle 2 and the leveling work machine 20 suspended by the boom 10 at the front-end | tip.

  The traveling vehicle 2 includes a lower traveling body 3 configured to be capable of traveling on the rails R1 and R2 on the slab track T by an engine drive mounted on the vehicle body 7, and a traveling body frame 3a of the lower traveling body 3. A vehicle body 7 (upper turning body) mounted so as to be turnable via a turning mechanism 6 at the center, and an engine which is mounted on the vehicle body 7 and serves as a power source for operating the traveling and leveling machine 20 and other parts. And hydraulic equipment, its accessory equipment (none of which are shown), and the cab 8. The lower traveling body 3 is supported by a pair of right and left supported by axles supported by bearings on the support frame 4 in front of and behind rubber crawler belts 3b wound on both sides of the traveling body frame 3a. The iron rings 5 and 5 are provided.

  A boom 10 is arranged on the vehicle body 7 so that the base end is pivotally supported by a pin 11 on a bracket 9 provided at the front center position of the revolving frame 7a and protrudes forward. In this boom 10, the rod 13a end of the boom cylinder 13 pivotally attached to the front end of the revolving frame 7a is pin-connected to the front lower bracket 14 so that the boom 10 can be raised and lowered by the expansion and contraction of the boom cylinder 13. Has been. A bracket 12 for suspending a leveling work machine 20 to be described later is attached to the tip of the boom 10, and a mounting bracket for a posture operation cylinder 29 for operating the posture of the leveling work machine 20 on the top of the tip. 15 is attached.

  The leveling work machine 20 includes a main frame 22 formed in a square shape in plan view, and four guide wheels 25 disposed on the lower surface of the main frame 22 at a predetermined interval in the front-rear direction. 25, 25 'and 25' are supported so as to be movable on a pair of left and right rails R1 and R2 on the track slab T. A vertical member 23c is connected to the center of the upper surface of the main frame 22, and a support structure 21 is formed by a suspension frame 24 of a stretchable structure that stands upright with a base end fixed to a substantially central position upper surface of the vertical member 23c. Equipment is supported on the main frame 22, the upper part of the suspension frame 24 is pivotally attached to the bracket 12 at the tip of the boom 10, and receives a power source from the traveling vehicle 2 side, and also drive control. Thus, it is configured so that the correction work can be performed. These configurations will be specifically described below. In addition, about arrangement | positioning of each part in this rectification work machine 20, what is illustrated is described with respect to the left and right rails R1 and R2. Therefore, when it is reversed by the leveling operation, it is arranged in reverse of the description.

  As shown in FIGS. 2 to 4, the main frame 22 of the support structure 21 has a long side in the direction straddling the gauge and a rectangular shape with the short side in the direction parallel to the rails R <b> 1, R <b> 2. One side at one end and the other at the right side of the rail R2 (when it is reversed, the rail R1), the two in parallel at a position equally divided in the right and left directions, and the transverse members 22a and 22b (in the direction of the gauge) Vertical members 23a, 23b, 23b (members in a direction parallel to the rails) for connecting the members to each other are arranged and framed. A vertical member 23c having a large cross section parallel to the rails R1 and R2 at the center position is constructed on the horizontal members 22a and 22b. In the main frame 22, the horizontal members 22a and 22b are arranged on the side where the vertical members 23b and 23b are arranged, and the allocation length from the central portion is slightly longer than the opposite side (the mounting side of the vertical member 23a). It is formed so as to protrude largely from the upper side of the rail toward the outer side.

  The guide wheels 25 and 25 'attached to the main frame 22 of the support structure 21 are arranged on the outer track side on the lower surface of the main frame 22 so as to correspond to the left and right rails R1 and R2 on the track slab T. The two guide wheels 25, 25 are attached to both the front and rear brackets 25a so as to roll along the head of one rail R1 when in use. The other two guide wheels 25 ′ and 25 ′ are pin-supported so that the other two guide wheels 25 ′ and 25 ′ roll over the head of the rail R <b> 2. As shown in FIG. 4, the bracket 25a for supporting the guide wheel 25 with the hook slides in a direction perpendicular to the rail R1 by operating the handle 26a from the outside with a mounting seat 26 provided on the lower surface of the main frame 22. When the screw shaft 26b is rotated by the operation of the handle 26a, the bracket 25a slides. As a result, the main frame 22 moves in the gauge direction with respect to the guide wheel 25, and the position is adjusted. It is made to be done. The guide wheels 25 and 25 on the position adjustment side are preferably provided on the side opposite to the leveling operation side described later.

  As shown in FIGS. 2 to 4, the suspension frame 24 is formed of a vertically nested tube, and is provided on a vertical member 23 c laid in the front-rear direction at a substantially central portion of the upper surface of the main frame 22. The base end of the lower member 24a is attached upright to the mounting seat 23d. A bifurcated bracket 27 is attached to the upper end of the upper member 24b upright at a required interval, and the tip of the boom 10 provided at the front of the traveling vehicle 2 with the base end of the bracket 27 sandwiched from the outside. The bracket 12 is inserted into the bracket 12 and connected by a connecting pin 28, and is suspended from the tip of the boom 10. Further, a rod end of a posture operation cylinder 29 having a base end attached to the mounting bracket 15 at the top end of the boom 10 is connected to the upper portion of the bracket 27 by a pin 29b. Twenty postures are operated. In the suspension frame 24 having such a configuration, an elevating cylinder 30 is incorporated in the hollow interior thereof, and the operation of the elevating cylinder 30 moves the main frame 22 up and down via the lower member 24a. .

  As shown in FIGS. 3 to 6, two nut runners 32, 32 standing upright are moved up and down simultaneously at an intermediate position between the two vertical members 23b, 23b parallel on the main frame 22. A nut runner mechanism 31 including a single nut runner elevating cylinder 35 and a slide base 34 and a support frame 39 for supporting them is arranged with the sockets 32b of the nut runners 32 and 32 facing downward.

  The set of nut runners 32, 32 is arranged on parallel shafts 33b, 33b arranged in boxes 33a, 33a installed on two longitudinal members 23b, 23b arranged in parallel in the main frame 22. Corresponding to the fastening presser bolts 71 and 72 of the tie plate 70 on the target track on the slide base 34 that is supported on both sides by the sliders 33c and 33c supported slidably on It is installed upright with the arrangement to be. The support structure of the two nut runners 32, 32 is such that the cylinder body 35a of the nut runner raising / lowering cylinder 35 and the support frame 39 are connected to stand upright on the slide base 34, and are parallel to the axis of the support frame 39 in the same direction. The nut runners 32, 32 are supported by connecting members 39b, 39b guided by two guide rods 39a, 39a that are upright. Thus, both the nut runners 32, 32 can be raised and lowered by the nut runner lifting cylinder 35 via the connecting members 39b, 39b. The slide base 34 is connected to a link mechanism 37 operated by a nut runner slide motor 36 (servo motor) provided at an adjacent position, and is moved by a stop position detection sensor 38 ′ that moves together with the slide base 34. In order to detect and set the positions of the sockets 32b and 32b of the nut runners 32 and 32 with respect to the fastening presser bolts 71 and 72, they are moved to an appropriate position in relation to the motor 36, and the shaft centers of the nut runners 32 and 32 are fastened. It is comprised so that it may correspond with the axial center of the presser bolt 71,72.

  As shown in FIGS. 3 and 7 to 10, rail clamp devices 40 and 41 are arranged at the front position of the installation location of the nutrunner mechanism 31. The rail clamp devices 40 and 41 are provided at the front position (the upper position of the rail R2) of the nutrunner mechanism 31 and the upper position of the rail R1 on the opposite side, and are connected to each other by the connecting member 51 at the upper portion. . Both of these rail clamp devices 40 and 41 have substantially the same structure. Therefore, one movable side (second rail clamp device 41) will be described, and the other fixed side (first rail clamp device 40) will be omitted from the description of structures other than necessary, and the same structure portion will be omitted. Are denoted by the same reference numerals as those of the second rail clamp device 41 and will not be described in detail.

  First, one movable-side rail clamp device (second rail clamp device 41) has a cantilever with an upper end attached to an upper portion of a support column 42 standing from a front lateral member 22a of the main frame 22 of the support structure 21. A vertically long hanging main member 43 that is pivotally supported by a bracket 42b attached to a lower portion of the tip of the material 42a with a pin 42c, and a clamp piece mounting bracket 44 provided at the lower end of the hanging main member 43. The base end is pivotally supported by connecting pins 46, 46 and is provided with a pair of clamp pieces 45, 45 arranged symmetrically, and clamp operation cylinders 47, 47 for operating these clamp pieces 45, 45. ing.

  The clamp pieces 45, 45 are each provided with gripping claws 45a attached sideways so as to connect the insides of the tip ends of two pieces arranged at a required interval, and at the opposite positions of the rail R2. The seat r is formed so as to be able to perform a corrective action with both side ends sandwiched therebetween. These clamp pieces 45, 45 are intermediate positions of trunnion mount-type clamp operation cylinders 47 pivotally supported by brackets 48, 48 attached symmetrically on both upper sides of the suspension main member 43. The ends of the rods 47a are connected by pins 47b, and when the rods 47a of the clamp operating cylinders 47 and 47 are projected, the rods 47a are rotated with the connecting pins 46 and 46 as base points so that the seat r of the rail R2 is sandwiched from both sides. Has been. In addition, since this 2nd rail clamp apparatus 41 is supported by the pivot pin 42b in the top end part of the suspension main member 43, it is made to be able to move laterally (swing) at the time of correction. The other fixed-side rail clamp device (first rail clamp device 40) is similar to the second rail clamp device 41 in terms of the relationship between the clamp pieces 45 'and 45' and the clamp operation cylinder 47 '. The suspended main member 43 ′ is supported in an upright stationary state by a support member 49 attached to the main frame 22.

  The left and right first rail clamp devices 40 and the second rail clamp devices 41 thus configured are stationary of the brackets 42a at the tops of the columns 42 and the first rail clamp devices 40 that support the top tops of the second rail clamp devices 41. The upper part of the suspended main member 43 'to be supported is connected to each other by the connecting member 51 and is kept fixed at the upper part. The second rail clamp device 41 has a movable operation bracket 52 projecting laterally on a side surface facing the other first rail clamp device 41 at an intermediate position of the suspended main member 43. In addition, a bracket 53 is projected in a lateral direction at a position facing the movable operation bracket 52 in the second rail clamp device 41 at an intermediate position of the suspended main member 43 ′ of the first rail clamp device 40. The movable operation bracket 52 and the bracket 53 have a pin 56 at the end of the movable rod 55b of a power cylinder 55 (gauge leveling cylinder) driven by a hydraulic servomotor 55a attached to the transverse member 22a of the main frame 22. It is connected. When the power cylinder 55 is driven by a command from the control unit to advance and retreat, the suspension main member 43 of the second rail clamp device 41 is clamped by swinging and moving left and right around the pivot pin 42b. Correcting operation is performed so that the rail R2 is adjusted to the gauge. The reaction force at this time is received by the other rail R <b> 1 via the first rail clamp device 40. In addition, limit switches 57 and 57 for preventing overrun are provided on both sides of the intermediate portion of the suspended main member 43 of the second rail clamp device 41.

  In addition, an electric gauge gauge 58 is provided at the lower part of the adjacent portion in parallel with the arrangement of the first and second rail clamp devices 40 and 41. The gauge 58 has a well-known structure, and is configured to measure the distance between the left and right rails by bringing a roller into contact with the inner surface of the head of the rail. Measurement data detected by the gauge 58 is sent to a control unit (not shown) provided in the vehicle body 7 so as to be reflected and controlled in the operation of the rail clamp devices 40 and 41 at the time of gauge correction. ing. Further, one of the guide wheels 25 ′ that travels and guides the leveling work machine 20 along the one rail R <b> 2 is provided with an encoder 59 at the end of the rotation support shaft to measure the moving distance in the leveling work machine. Thus, the moving distance data can be transmitted to the control unit so that the corrective work position can be detected.

  The operation of the hydraulic cylinders (clamp operating cylinder 47, nutrunner elevating cylinder 35, lifting frame elevating cylinder 30) and other hydraulic devices in each part is based on data measured by the inspection vehicle in a control unit (not shown). A control mechanism is provided that operates the hydraulic control unit according to the input data of the correction data, and operates the hydraulic devices so that the correction operation is performed.

  As shown in FIGS. 5, 9, and 11, the leveling work machine 20 configured as described above is arranged on the side where the second rail clamp device 41 and the nut runner mechanism 31 of the main frame 22 are disposed. Support members 60 and 60 to which a plurality of auxiliary support guide wheels 64 are attached detachably hang down through mounting brackets 68 and 68 that are attached to the lower surfaces of the end portions of the front and rear lateral members 22a and 22b. Attached. In this embodiment, the auxiliary support guide wheels 64 are a set of two. However, two or more auxiliary support guide wheels 64 may be provided as necessary.

  The auxiliary support guide wheel 64 rolls on the slab surface Ta of the track in use and supports the main frame 22, and an elastic material (for example, a rubber wheel or the like so as not to damage the slab surface Ta by running). A resin wheel (nylon wheel or the like) having high mechanical strength is preferably used.

  The support member 60 (the front and rear support members have the same structure and will be described as one of them) is formed so as to be movable in the vertical direction by combining two upper and lower parts 61 and 61 '. The upper piece 61 includes an attachment piece 61a fitted to a downwardly bifurcated attachment bracket 68 that is attached to the lower surface of the end of the transverse member 22a of the main frame 22 at the upper end portion, and the outer surface of the attachment bracket. The attachment pin 62 is detachably connected through the attachment hole provided in the attachment piece 61a. Further, the lower part piece 61 'has a wheel support bracket 63 attached to the lower end, and the wheel support bracket 63 travels the two auxiliary support guide wheels 64, 64 in parallel with the rail R2. It is rotatably supported by the shaft pin. The two auxiliary support guide wheels 64, 64 have a support interval P of 100 to 150 mm (not limited to this), and one wheel always shares the load with the joint of the track slab T when moving. It is arranged so that it can be supported. The upper and lower pieces 61 and 61 ′ of the support member 60 are connected from the connection holes provided in the one piece 61 ′ in the front and rear side plate portions to the vertically long slots provided in the other piece 61. 61a is inserted and connected, a guide shaft 65 is attached downward on the longitudinal axis of the upper piece 61, and a seat 65a provided on the upper piece 61 and a wheel support bracket 63 are attached to the lower piece 61 '. A coil spring 66 (corresponding to the buffer mechanism of the present invention) is fitted and interposed between the guide shaft 65 and the upper surface of the seat plate 61 ′ b, and the auxiliary guide wheels 64 and 64 are always slabs by the thrust of the coil spring 66. The load of the leveling work machine 20 is supported in an auxiliary manner in contact with the surface Ta. The thrust force applied to the auxiliary support guide wheels 64 and 64 by the coil spring 66 is supported on the rails R1 and R2 by sharing the weight of the leveling work machine 20 among the four guide wheels 25, 25, 25 ', and 25'. This prevents the load to be unevenly distributed on the inner track side due to changes in the track condition. Accordingly, the coil spring 66 is set such that the thrust force does not occur by the auxiliary support guide wheels 64 and 64 so that the guide wheels 25 ′ and 25 ′ located on the inner rail side are floated on the tread surface of the rail R 2.

  When performing the leveling work, the gauge / street leveling machine 1 of the present embodiment places the traveling vehicle 2 on the rails R1, R2 of the track and moves it to the leveling work site. In this case, the boom 10 is made the shortest and the traveling vehicle 2 is caused to travel with the leveling work machine 20 lifted upward from the rails R1 and R2 although not shown.

  When reaching the position for performing the leveling operation, first, the lower traveling body 3 of the traveling vehicle 2 stops in a state where the iron wheel 5 in the traveling front portion is positioned above the tie plate 70 position as shown in FIG. Then, the boom cylinder 13 is operated to lower the boom 10 to be in a substantially horizontal state, and the posture operation cylinder 29 is operated to adjust the suspension frame 24 to a substantially vertical posture. Next, when the leveling work machine 20 lifted by the extension operation of the lifting cylinder 30 installed in the suspension frame 24 and the partial contraction operation of the boom cylinder 13 is lowered onto the rail, the tie plate at the leveling position is obtained. The nut runner mechanism 31 in the leveling work machine 20 is made to face on 70. After this, the work system is shifted to. At this time, the nut runners 32, 32 in the nut runner mechanism 31 are in the raised state. The operator gives a command to start operation of the leveling machine 20 in the cab 8 to the control unit to operate each unit.

  In the control unit, whether or not the shaft centers of the nut runners 32 and 32 are aligned with the fastening presser bolts 71 and 72 located on the inside and outside of the tie plate 70 that corrects based on the set data and sandwiches the rail R2. The nut runners 32 and 32 are started if they are closely matched, and the nut runner lifting cylinder 35 is actuated to lower the sockets 32b and 32b provided at the end portions of the nut runners 32 and 32. First, a loosening operation is performed by engaging with the fastening nuts of the fastening presser bolts 71 and 72. At this time, the alignment in the rail direction is finely adjusted by starting the nut runner slide motor 36 (servo motor) to operate the link mechanism 37 and moving the slide base 34 forward and backward by the link mechanism 37. At this time, the slide base 34 is detected by the nut runner position sensors 38, 38, and is moved to the parallel shafts 33b, 33b via the sliders 33c on both sides in the width direction to facilitate fine adjustment.

  Thus, when the fastening presser bolts 71 and 72 at the correct position are loosened by the operation of the nutrunner mechanism 31, the current gauge is simultaneously measured by the gauge gauge 58. Next, a clamp start signal is given to the hydraulic control unit to the clamp operation cylinders 47, 47, 47 ′, 47 ′ of the first rail clamp device 40 and the second rail clamp device, and the respective clamp operation cylinders 47, 47. , 47 ', 47' are moved forward so that the rails at positions where the clamp pieces 45, 45 'are simultaneously opposed to each other are gripped from both sides. Thus, the left and right rails R1, R2 are simultaneously clamped by the clamp pieces 45, 45 ′ of both rail clamp devices 40, 41. As is apparent from FIG. 3, the rail clamp position is located in the vicinity of the tie plate 70 that is to be adjusted, and the seat r of the rails R1 and R2 is clamped from both sides by clamp pieces 45 and 45 (45 'and 45'). ) It is gripped by gripping claws 45a, 45a attached to the tip.

  Next, based on the measured value by the gauge gauge 58, a signal for correction is given from the control section to the operating section of the power cylinder 55 so as to match the gauge dimension data. Then, when the gauge dimension is over, the power cylinder 55 is contracted to perform the second operation on the side where the tightening of the fastening presser bolt is loosened with reference to the rail R1 on the opposite side which is not adjusted at the present time. The rail clamp device 41 is pulled inward, and the clamp part is moved laterally until the gap reaches an appropriate dimension. At this time, as described above, since the suspended main member 43 is tiltably provided in the second rail clamp device 41, the rail R2 can be moved to a predetermined position by being displaced by a required amount. Of course, when the gauge size is narrowed, it operates in the opposite direction to the above and is adjusted to a predetermined position.

  When the rail R2 is adjusted to a predetermined position, the nut runners 32 and 32 of the nut runner mechanism 31 are operated in the tightening direction, and the fastening presser bolts 71 and 72 are tightened to displace the tie plate 70 together with the rail R2 to the track slab T. Fix against. Thus, when the adjustment is performed, the nut runners 32, 32 are lifted and retracted, and the clamp operating cylinders 47, 47, 47 ', 47' of both the rail clamp devices 40, 41 are reversely operated to clamp pieces 45 (45 ' ) Release the clamp of the pair of rails and make it movable. Thereafter, the operation is moved to the next leveling position and the above operation is repeated. Usually, the leveling operation is performed every 4 pitches of the fastening and fixing position of the rail by the tie plate 70. Accordingly, the leveling work machine 20 is moved on the rail by the guide wheels 25 and 25 ', and the next work is performed at a position advanced four pitches.

  In this way, the movement is sequentially performed in the forward direction, and the leveling work is performed. When the leveling of one rail R2 in the track of the predetermined section is completed, the traveling vehicle 2 is reversed, and the other set as the reference as before The rail R1 is adjusted. In order to do this, the vehicle body 7 of the traveling vehicle 2 is turned by operating the turning mechanism 6, and the boom 10 and the leveling work machine 20 attached to the tip of the boom 10 are turned in the opposite direction. In order to reverse the leveling work machine 20, first, when the boom cylinder 13 is extended, the boom 10 is lifted upward with the pivot pin 11 as a base point, so that the leveling work is performed simultaneously with the movement toward the cab 8 side. The machine 20 is displaced laterally and held. At this time, when the rod of the posture operation cylinder 15 is extended, the boom 10 stands up and is rotated and displaced to the cab 8 side, and at the same time, the bracket 27 at the upper end of the suspension frame 24 of the leveling work machine 20 is attached to the boom 10. The position of the connecting pin 28 with the bracket 12 at the front end is rotated by approximately 90 degrees from the base point, and is displaced laterally. By doing so, the leveling work machine 20 is within the vehicle limit of the traveling vehicle 2 via the boom 10. Therefore, even if the vehicle body 7 is turned, it can be turned on the lower traveling body 3 without protruding greatly from the track, and the leveling machine 20 can be positioned in the opposite direction to the previous state.

  After the direction change, the rod 13a of the boom cylinder 13 is contracted to fall the boom 10, and at the same time the rod of the posture operation cylinder 29 is retracted to return the leveling work machine 20 to the original posture and float. The posture operation cylinder 29 adjusts the suspension frame 24 to a vertical posture. After the leveling work machine 20 is brought into a state of facing the track, the elevating cylinder 30 is operated to lower it from the floating state onto the rail.

  Thereafter, the fastening presser bolts 71 and 72 are loosened on the tie plate 70 at the required leveling position in the rail R1 opposite to the rail R2 that has been previously set as the reference in the above procedure, and then the rail R2 that has been adjusted before is set as the reference. After the first and second rail clamp devices 40 and 41 are operated to clamp the rails R1 and R2 in accordance with the correction data based on the inspection data, the gauge gauge 58 has a predetermined gauge dimension. By operating the power cylinder 55, this time the rail R1 is moved, and the fastening presser bolts 71 and 72 loosened at a predetermined position are tightened and fixed.

  In this way, when the rectifying operation at one tie plate 70 position is completed, the tie plate moves forward to the next tie plate position, for example, 4 pitches ahead, and the rectifying operation at that position is performed as described above. Thereafter, the above-described correction operation is repeated while sequentially moving, and the adjustment operation between the gauge and the street in a predetermined section is performed.

  The above describes the leveling operation in the section where there is no difference in the height of the inner and outer gauges on the track slab T as in the straight section, but as shown in FIG. In a place where the rails R1 and R2 are laid in an inclined state, when the leveling work machine 20 is run on the track and the leveling work is performed, the leveling work machine 20 is adjusted as described above. Due to the structure in which a load that is biased toward the side on which the normal operation is mainly performed acts and the rails R1 and R2 are fixed to the slab surface Ta inclined according to the cant, the self-weight of the leveling work machine 20 The load acts toward the inner track side, and an acting force that spreads the rail R2 on the inner track side due to the uneven load works. Therefore, when the fastening presser bolts 71 and 72 are once loosened at the time of the straightening operation, the rail is easily fixed in a state where the rail is excessively displaced when the loosened nut is tightened after the straightening operation is performed. Therefore, in the present embodiment, the mounting attachment brackets 68 and 68 provided at the front and rear ends located on the inner rail side of the main frame 22 in the leveling work machine 20 having the above-described configuration are respectively provided with the support members 60 and 60. Then, the auxiliary support guide wheels 64 are mounted, and the leveling operation is performed as described above.

  In order to mount the support member 60 of the auxiliary support guide wheel 64 on the mounting bracket 68, the top mounting piece 61a of the support member 60 is fitted into the bifurcated portion of the mounting bracket 68, and the mounting pin 62 is inserted into the mounting hole from the outside. Insert and combine. In this way, the two auxiliary support guide wheels 64 and 64 provided at the lower end of the support member 60 are assembled in a state of being parallel to the rail R2, and the auxiliary support guide wheels 64 abut on the slab surface Ta to assist. The main frame 22 is supported at the front and rear positions of the outer portion on the inner track side.

  If the auxiliary support guide wheel 64 is used as an auxiliary support through the support member 60 in this way, the load of the leveling work machine 20 acts on the rail R2 by the guide wheels 25 'and 25' on the inner rail side. The auxiliary support guide wheels 64 and 64 share and support at the outer front and rear positions, and as a result, it is possible to reduce the excessive load action on the rail R2 on the inner track side. Accordingly, when performing the leveling work, when the leveling work is performed by loosening the fastening force of the fastening presser bolts 71 and 72 at the tie plate 70 position, the irregular load acting force on the rail R2 is eliminated and the rail R2 is excessive. Therefore, it is possible to prevent the fastening presser bolts 71 and 72 from being tightened with a proper inclination, and to perform an appropriate leveling operation.

  Then, the auxiliary support guide wheel 64 that assists and supports the leveling work machine 20 travels on the slab surface Ta when the leveling position is moved, and the vertical movement due to the displacement of the slab surface Ta is assembled to the support member 60. Absorption is performed by a buffering function of the coil spring 66. Therefore, the load of the leveling work machine 20 is supported by the four guide wheels 25 and 25 and 25 'and 25' supported on the rails R1 and R2 as a general rule to prevent the load from rising. Further, two auxiliary support guide wheels 64 are arranged in the front-rear direction, and when the arrangement interval (pitch) P is set to, for example, 100 to 150 mm and exceeds the clearance of the slab surface Ta at the slab connection location, either the front or rear is provided. Since one wheel is always on the slab surface Ta to support the load, the load balance of the leveling work machine 20 is lost when moving with the auxiliary support guide wheel 64. It can be moved without.

  The auxiliary support guide wheel 64 and the support member 60 can be used in a flat section other than the cant section as described above. When not used, the auxiliary support guide wheel 64 and the support member 60 are removed at the mounting bracket 68 portion. If the auxiliary support guide wheel 64 and its supporting member 60 are accommodated by providing a storage portion at an appropriate position, the auxiliary support guide wheel 64 and its support member 60 are accommodated. Work can be performed efficiently and properly.

  Further, in the present embodiment, the traveling vehicle 2 includes the rubber crawler belt 3b as well as the iron wheels 5 and 5 as the lower traveling body 3, and therefore, when the traveling is stopped due to the contact friction between the crawler belt 3b and the rails R1 and R2. The slip can be eliminated, and the tie plates 70 arranged at substantially equal pitches can be moved to the positions of, for example, every four pitches and stopped correctly, so that the corrective work can be facilitated.

  In the above description, the embodiment in which the coil spring is used as the buffer mechanism in the support member of the auxiliary support guide wheel of the leveling work machine has been described. However, a buffer body in which a fluid is sealed is employed as the buffer mechanism. It is also possible. In addition, the structure of the portion where the support member of the auxiliary support guide wheel is detachably attached to the main frame is not limited to the above-described embodiment, and the attachment / detachment mechanism is screwed or fitted to other than the above-described embodiment. Needless to say, these structures may belong to the technical category of the present invention.

Overall side view of gauge and street leveling machine of this embodiment Plan view of FIG. Top view of the leveling machine A-A view of FIG. Front view of nutrunner mechanism FIG. 5A is a plan view and FIG. 5B is a view showing a slide support mechanism. Overview of rail clamp device Front view of movable rail clamp device The figure which shows the state which attached the auxiliary | assistant support guide wheel by the BB view of FIG. Front view of fixed side rail clamp device The figure which shows the leveling work part side of the leveling machine A diagram showing the relationship between the rail and the leveling machine in the cant section Work mode explanatory diagram of conventional gauge and street leveling machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gauge and street leveling machine 2 Traveling vehicle 3 Lower traveling body 5 Iron wheel 10 Boom 13 Boom cylinder 20 Leveling work machine 21 Support structure 22 Main frame 24 Suspension frame 25, 25 'Guide wheel 29 Attitude control cylinder 30 Lifting cylinder 31 Nutrunner Mechanism 32 Nutrunner 32b Socket 34 Slide Base 35 Nutrunner Lifting Cylinder 40 First Rail Clamping Device 41 Second Rail Clamping Device 43, 43 ′ Hanging Support 45 Clamping Piece 45a Grip Claw 47, 47 ′ Clamp Operation Cylinder 55 Power Cylinder 60 Auxiliary support guide wheel support member 64 Auxiliary support guide wheel 66 Coil spring 68 Mounting bracket 70 Tie plate 71, 72 Fastening presser bolt R1, R2 Rail T Track slab Ta Slab surface

Claims (4)

  It is a machine that adjusts the gap between slab tracks, and is supported by the traveling vehicle that can travel on the track and the tip of the boom provided at the front of the traveling vehicle so that it can be lowered onto the rail of the track during work. A leveling work machine suspended from the main frame, and the leveling work machine is provided with two sets of left and right wheels traveling on a rail at a lower part of the main frame, A gauge and street leveling machine characterized in that a support member suspended in the front-rear position in the traveling direction is provided, and an auxiliary support guide wheel that travels on the slab surface is provided on the support member.   2. The gauge / straightening machine according to claim 1, wherein the auxiliary support guide wheel has a configuration in which two wheels are arranged in a traveling direction at a predetermined interval at a lower end portion of a support member.   2. The gauge / straightening machine according to claim 1, wherein the support member of the auxiliary support guide wheel includes a buffer mechanism that operates in a vertical direction.   4. The gauge / straightening machine according to claim 1, wherein the support member of the auxiliary support guide wheel is detachably attached to a main frame of the leveling machine by an attaching / detaching mechanism.

Images