JPH0135965B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a track alignment method and apparatus.

There are two types of track alignment: curved section alignment and straight line alignment. First, curved area alignment will be explained.

Figure 1 is a diagram for explaining the definition of the amount of lateral displacement of the track, etc., where one rail on the curved part of the track is taken as a reference rail, and it is represented by an arc S of radius R, and of length l. If we arrange the reference line KM so that its both ends K and M are located on the arc S, and let N be the point where the perpendicular line drawn from the center point L of the reference line KM to the reference line KM intersects the arc S, then NL The length is the lateral displacement amount V of the arc S with respect to the reference line KM. If this lateral displacement amount V is very small compared to the radius of the circular arc S, the lateral displacement amount V can be determined from V=l ² /8R.

Also, at a point other than the center point L on the reference line KM, for example at a point L' that divides the length l of the reference line KM into length a and length b, a perpendicular line drawn to the reference line KM forms an arc S. If the intersection point is N', the length of L'N' is the lateral displacement of point N' on the arc S with respect to the reference line KM.
V′. If the lateral displacement amount V' at point N' is very small compared to the radius R of the circular arc S, the lateral displacement amount V' at point N' can be determined from V'=ab/2R.

In addition, in Figure 1, a point P is taken on the extension of the reference line KM, KP is used as the reference line, and at point P, a perpendicular line to the reference line KP on the side of the arc S is
If the point where it intersects is Q, then the length of PQ is the reference line
This is the lateral displacement V'' of point Q on the arc S with respect to KP.If MP=C, if the lateral displacement V'' of the Q point is very small compared to the radius R of the arc S,
The amount of lateral displacement V'' at point Q can be determined from V''=C(l+C)/2R.

The above-mentioned lateral displacements V, V' and V'' can be converted into lateral displacements with respect to the same reference line by utilizing the properties of circular curves. Therefore, in the following explanation, lateral displacements When adding, averaging, or comparing the quantities V, V', and V'', values converted into lateral displacements with respect to the same reference line shall be used.

Conventionally, as shown in Fig. 2, when straightening a curved section of the track with radius R using S as the reference rail and KM as the reference line, the front end K of this single reference line KM was used as the track. The rear end M is placed on the reference rail S of the unaligned part of the track, and the rear end M is placed on the reference rail S of the finished part of the track, and while moving the reference line KM along the reference rail S, the curve of the track is The amount of lateral displacement V or V' at the point to be adjusted is determined by measuring the amount of lateral displacement V or V', and comparing the measured amount of lateral displacement V or V' with a preset lateral displacement amount to determine the amount of lateral displacement at the point to be adjusted. The correct amount was determined, and the rail was moved laterally by that amount to correct the track. Therefore, even if the amount of lateral displacement of the rails on the track that has already been leveled changes due to the influence of the subsequent straightening work on the unleveled track, it is difficult to grasp the changed track condition. Therefore, there was a drawback that it was not possible to smoothly straighten the track between the straightened part and the unstraightened part.

The present invention has been made in order to eliminate the above-mentioned drawbacks.The present invention has been made in order to eliminate the above-mentioned drawbacks.The present invention grasps the condition of the track in the uncorrected portion and the corrected portion of the track, and smooths the uncorrected portion and the corrected portion of the track. The present invention provides a method and device for straightening a track, which can straighten the track as expected. That is,
The amount of lateral displacement of the reference rail at multiple points on the unregistered part of the track is measured, and the average lateral displacement of the reference rail in the unregistered part of the track is determined, and this is taken as the amount of previous displacement. Measure the lateral displacement of the reference rail at one or more points on the straightened section of the track to find the lateral displacement or average lateral displacement of the reference rail at the straightened section of the track, and calculate this as the subsequent displacement. calculate the average displacement amount from the front displacement amount and the rear displacement amount, correct the average displacement amount according to the track conditions, work conditions, etc. to find the set displacement amount, and calculate the set displacement amount and the track The amount of adjustment is determined by comparing the measured lateral displacement amount of the reference rail measured at the point to be adjusted, and the rail is laterally moved by the amount of adjustment, and the unregistered part and the completed part of the track are separated. The object of the present invention is to provide a method and device for straightening a track that can smoothly straighten a track.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

Fig. 3 is an explanatory diagram of the principle of the track straightening method of the present invention at a curved section of the track, and Fig. 4 shows a track straightening device of an embodiment of the present invention attached to a track straightening machine. The side view of FIG. 5 is a schematic view of the alignment device along the trajectory of FIG. 4 as viewed from the Z direction.

In FIGS. 3 to 5, the same numbers indicate the same members.

Figure 3 shows that when straightening a curved part of a track, the amount of lateral displacement is measured at two points on the rail in the unstraightened part of the track, and at one point on the rail in the straightened part of the track. FIG. 3 is a diagram illustrating the principle of the track straightening method of the present invention, which measures the amount of lateral displacement at the point of the track to straighten the curved part of the track. That is, the main reference line 13
and a track straightener having a sub reference line 16 (not shown)
While moving on the track in the direction of arrow X, the main reference line 13 is controlled so that the amount of lateral displacement at point E on the main reference line 13 is always zero, using one rail 1 of the track as a reference rail, In the ungraded part of the track, rail 1
The lateral displacement V ₁ between point B and the sub-straightening section 16 and the lateral displacement V ₂ between point C and the main reference line 13 are measured. The amount of lateral displacement V ₃ with respect to the reference line 13 is measured, and the amount of lateral displacement Y between point D and the main reference line 13 is measured at the correction point of the rail 1 where correction is to be performed according to the track. Then, the average lateral displacement amount of the measured lateral displacement amount V ₁ and V ₂ of the rail in the unaligned part of the track is taken as the previous displacement amount V _A , and the measured lateral displacement amount of the rail in the finished part of the track
Let V ₃ be the amount of rear displacement V _B (if it is measured at multiple locations and there are multiple measured values, use the average value),
From this front displacement amount V _A and rear displacement amount V _B , the average displacement amount is
Find Y _A. To this average displacement Y _A , the orbit condition,
Correction amount V _C determined in advance according to work conditions, etc.
The set displacement amount Y _S at the straightening point D of the track is determined by adding and subtracting the set displacement amount Y _S , and the straightening amount is determined from this set displacement amount Y S and the measured lateral displacement amount Y measured at the straightening point D of the track. The rail is moved laterally by the amount of adjustment by the later-described rail lateral movement device 15, and the roadbed gravel on the lower surface of the sleeper is compacted by the tamping device.
Fix the track sleepers with road gravel to prevent them from moving laterally, and align them along the track.

Note that the above-mentioned correction amount V _C is zero in the straight part of the track, a predetermined lateral displacement amount in the circular curve part, and the radius of the circular curve connected to the transition curve, and the radius of the circular curve connected to the transition curve, and This is a correction amount determined from the cant amount gradual reduction method (linear gradual reduction method, sine gradual reduction method, etc.), the length of the transition curve, the traveling distance from the entrance and exit of the transition curve or circular curve, and other track conditions and work conditions.

Next, in the straight section of the track, the amount of forward displacement is
Let V _A ′ be the average amount of rail misalignment in the unaligned portion of the track corresponding to V _A , and let V _B ′ be the average amount of rail misalignment in the fully aligned portion of the track corresponding to the above-mentioned post-displacement amount V _B. , find the average amount of misalignment Y _{A ′} of the rail corresponding to the average amount of displacement Y A , and calculate this average amount of misalignment Y _{A ′}
and the amount of deviation as measured at the straightening point D of the rail corresponding to the measured lateral displacement Y at the point to be straightened.
The amount of adjustment is determined from Y', and the adjustment can be performed on the straight portion of the trajectory in the same manner as the adjustment on the curved portion described above. Note that in this case, as described above, the correction amount V _C is zero.

An embodiment of an apparatus for carrying out the method described in connection with FIG. 3 above is shown in FIGS. 4 and 5.

In the figure, a track leveling machine 2 that can run on rails 1 and 1' includes a known leveling device 3 for leveling the track and a leveling device 4 according to the present invention for leveling the track. Normally, alignment is carried out at the same time as level alignment of the track. The leveling device 3 includes a front reference device 5, a detection device 6, a rear reference device 7, a reference line 8, a rail lifting device 9, and the like. Reference section 12, main reference line 13, computing unit 14
and a rail lateral movement device 15.

The front reference part 10 is provided at the front of the track straightening machine 2, and measures the amount of lateral displacement at two points on the rail in the unstraightened part of the track, using one rail 1 or 1' of the track as a reference rail. Measurement part A _n , B _n , C _n
and a sub reference line 16. The measurement part A _n is
It is located at the forefront of the front reference part 10 and is attached to the front part of the underframe 18 of the track straightening machine 2 by a connecting rod 17.
It has a truck 19 and wheels 20, 20' rotatably attached to the truck 19. wheel 20,
20' is pressed against the side surface of the head of the reference rail 1 or 1' via the trolley 19 by a tension cylinder (not shown) using a spring or fluid pressure, and the rail is held in close contact with the reference rail 1 or 1'. 1 and 1' together with the track straightening machine 2, the bogie 19 is configured to be able to displace laterally in close contact with the rail via wheels 20 or 20'. Further, one end of the sub reference line 16 is attached to the cart 19. The measurement unit B _n is attached to the front reference device 5 of the leveling device 3, and includes a truck 21, wheels 20 and 20' rotatably attached to the truck 21 in the same configuration as the measurement unit A _n , It consists of a potentiometer 22 that measures and outputs the amount of lateral displacement between the reference rail 1 or 1' and the sub-reference line 16. The measurement part C _n is
A trolley 23 is provided at the rearmost part of the front reference section 10, and wheels 20, 20', rails 1 or 1', and a main reference are rotatably attached to the trolley 23 in the same configuration as the measurement section A _n . It consists of a potentiometer 24 that measures and outputs the amount of lateral displacement with respect to the line 13.

The detection unit 11 is a detection device 6 of the leveling device 3.
It is installed at almost the same position as the detection trolley 6', and measures the amount of rail lateral displacement at the straightening point _.
, a trolley 25, wheels 20, 20' rotatably attached to the trolley 25 in the same configuration as the measurement part A _n , and a horizontal line between the reference rail 1 or 1' and the main reference line 13. It consists of a potentiometer 26 that measures and outputs the amount of displacement.

The rear reference section 12 is provided at the rear of the track straightening machine 2 and measures the amount of lateral displacement of the rail at the track straightening completed section, and includes a position detection section E _n , a measurement section F _n and a zero point control device 27 . It consists of The position detection unit E _n is
Leveling device 3 between the detection section 11 and the measurement section F _n
A trolley 28 is attached to the rear reference device 7, wheels 20, 20' are rotatably attached to the trolley 28 in the same configuration as in the case of the measurement part A _n , the reference rail 1 or 1' and the main reference. It consists of a potentiometer 29 that measures the amount of lateral displacement with respect to the line 13 and outputs the measurement result to the zero point control device 27.
The measurement part F _n is located at the rearmost part of the rear reference part 12,
A truck 31 is attached to the rear part of the underframe 18 of the track straightening machine 2 by a connecting rod 30, and wheels 20, 20' are rotatably attached to the truck 31 in the same configuration as in the case of the measurement part A _n . Servo motor 32 and trolley 31 operated by the output signal of zero point control device 27
a screw shaft 34 which is rotatably attached to and driven by a servo motor 32 via a gear mechanism 33;
The rear end of the main reference line 13 is attached to the threaded shaft 34, and the main reference line 13 is attached along the threaded shaft 34.
It consists of an adjustment cylinder 35 that moves together with the rear end and a potentiometer 37 that measures and outputs the rotation angle of the servo motor 32 via a gear mechanism 36. The zero point control device 27 operates by inputting the output of the potentiometer 29 of the position detection section E _n , and outputs an operation signal to the servo motor 32 of the measurement section F _n .
When the output of the potentiometer 29 becomes zero, the servo motor 32 is stopped, and the amount of lateral displacement between the reference rail 1 or 1' at the position of the wheel 20 or 20' of the position detection unit E _n and the main reference line 13 is always zero. The servo motor 32 is controlled so that the following occurs. Therefore, when the output of the potentiometer 29 of the position detecting section E _n becomes zero, the amount of movement of the adjusting cylinder 35 of the measuring section F _n along the screw shaft 34 is equal to the reference rail 1 or 1'.
and the main reference line 13, which is measured by the potentiometer 37 and output.

The main reference line 13 has its front end attached to the measurement section B _n of the front reference section 10 and its rear end attached to the measurement section F _n of the rear reference section 12 .

The computing unit 14 includes an operating section 38 and a computing section 39. If the trajectory to be corrected is a circular curve, the operating unit 38 adjusts a predetermined amount of lateral displacement, and in the case of a transition curve, adjusts the radius of the circular curve connected to the transition curve, a gradual reduction method of the cant amount, etc. Work conditions such as trajectory conditions and whether the work position is at the entrance or exit of a transitional curve or a circular curve are output to the calculation unit 39. The calculation section 39 includes the potentiometer 22 of the measurement section B _n of the front reference section 10 and the potentiometer 2 of the measurement section C _n .
Input the output of step 4 to find the forward displacement amount V _A of the rail in the unaligned part of the track, and input the output of the potentiometer 37 of the measurement part F _n of the rear reference part 12 to straighten the track. Find the displacement amount V _B after the completion part, and calculate these V _A ,
Find the average displacement Y _A from V _B. Then, when the trajectory to be corrected is a circular curve, the calculation unit 39 adds or subtracts a predetermined lateral displacement amount inputted from the operation unit 38 to the average displacement Y _A as a correction amount V _C ,
The set displacement amount Y _S is determined, and the set displacement amount Y _S and the potentiometer 26 of the detection unit 11, that is, the measurement unit D _n are calculated.
A correction amount is determined from the measured lateral displacement amount Y inputted from the rail lateral displacement device 15, and a work signal is output to the hydraulic control device 41 of the rail lateral movement device 15. In addition, the calculation unit 39
If the trajectory to be corrected is a transitional curve, it is determined by counting the input from the operation unit 38 and the travel pulses input from the travel pulse transmitter 40 provided in the reference device 7 after the leveling device 3. Track straightener 2
Add or subtract the correction amount V _C from the travel distance from the entrance or exit of the transition curve or circular curve to the average displacement Y _A to obtain the set displacement Y _S , and do the same as in the case of the circular curve described above. The rail lateral movement device 15 consists of a hydraulic control device 41 and a hydraulic cylinder 42, and outputs an operation signal to the hydraulic control device 41 of the rail lateral movement device 15. The hydraulic control device 41 is activated to operate the hydraulic cylinder 42 to laterally move the rails 1, 1' by the amount of adjustment at the adjustment point.

Next, the operation of the track alignment device of the present invention having the above configuration will be explained.

On the straight track that has been straightened, the straightening device 4
Each measurement section B _n , C _n , D _n , F _n and position detection section E _n
each potentiometer 22, 24, 26, 37,
29 is at the zero position with respect to the main reference line 13 or the sub reference line 16.
In the curved part of the track shown in the figure, one rail of the track, for example, rail 1, is used as a reference rail, and the measuring section
While measuring the amount of lateral displacement at points B, C, D, F, and E of the reference rail 1 shown in Fig. 3 using B _n , C _n , D _n , F _n and position detection unit E _n , A case will be explained in which the correction is performed. First, the operation section 38
Then, the required values are set according to the trajectory conditions and work conditions, and the servo motor 32 is controlled by the zero point control device 27 of the reference section 12, so that the output of the potentiometer 29 of the position detection section E _n is zero, that is, Assuming that the lateral displacement between point E of the measurement rail 1 and the main reference line 13 is zero, the lateral displacement of points B _, C, _D , and F of the rail 1 is determined by the measurement parts B _n , C n , D n , and F _n , respectively. , and let the measured lateral displacement amounts be V ₁ , V ₂ , Y, and V ₃ , respectively.
These measured lateral displacement amounts are calculated by the calculation section 39 of the calculation unit 14.
is input. Then, in the calculation unit 39, V ₁ ,
From the average lateral displacement amount of V ₂ , the forward displacement amount V _A of the rail in the unaligned part of the track is determined, and from V ₃ the rear displacement amount V _B of the rail in the completed part of the track, and this From the front displacement amount V _A and the rear displacement amount V _B , the average displacement amount Y _A of the rail at the straightening point D is determined. Also,
In the transition curve section, the calculation section 39
8, input the required values according to the track conditions and work conditions, and input the travel pulse from the travel pulse transmitter 40.
Find the rail correction amount V _C at the straightening point D, add and subtract this correction amount V _C from the average displacement amount Y _A to find the set displacement amount Y _S , and calculate the set displacement amount Y _S and the measuring part D _n The amount of adjustment is determined from the measured lateral displacement amount Y of the adjustment point D measured by the rail lateral movement device 1.
An operation signal is output to the hydraulic control device 41 of No. 5. When the hydraulic control device 41 is activated by this activation signal, the hydraulic cylinder 42 is activated, and the rails 1, 1' are laterally moved by the amount of adjustment in the vicinity of the adjustment point D. Compact the gravel and complete the alignment on the track at alignment point D.

Furthermore, as mentioned above, the action of straightening the straight portion of the track by the straightening device 4 according to the present invention can be achieved by setting the straight portion straightening, that is, V _C =0, in the operating section 38. This is obvious from the description of the method of straightening according to the present invention and the description of the straightening according to the curved portion of the track described above.

In addition, in the above embodiments, the case where the amount of lateral displacement of the rail in the unaligned part of the track is measured at two locations, and the amount of lateral displacement of the rail in the part of the track where alignment has been completed is measured at one location. However, it is obvious that the present invention can be carried out even if the amount of lateral displacement of the rail in the unaligned portion of the track is measured at three or more locations, and the amount of lateral displacement of the rail in the portion of the track that has been aligned is measured at two or more locations. It is.

As described above, the present invention is capable of measuring the amount of lateral displacement of a plurality of points on the rail in the unaligned section of the track in front of the alignment point where alignment is to be performed on the track, and in the rear of the alignment section. Measure the amount of lateral displacement at one or more points on the rail in the straightened part, always keep track of the track conditions in the unstraightened part and the straightened part, and calculate the average displacement at the straightened point. This average displacement amount is corrected according to the track conditions and work conditions to determine the set displacement amount of the correction point, and from this set displacement amount and the measured lateral displacement amount of the point to be corrected, The amount of adjustment of the adjustment point is determined, and the adjustment point is laterally moved by this amount of adjustment to perform adjustment along the track, so the amount of lateral displacement of the rail on the track that has already been adjusted is subsequently corrected. The amount of change due to the lateral movement of the rails on the track is always measured and included in the set displacement amount for the next adjustment point, so the track always runs smoothly even on curved and straight sections. can be,
Furthermore, even if the orbit changes naturally over many years and the orbit conditions are no longer known, it is highly effective in that it is possible to correct the orbit accordingly.

In particular, the method of the present invention is characterized in that when determining the amount of front displacement, the amount of lateral displacement is determined for each of the rail in the unaligned part, the sub reference line, and the main reference line. It is possible to measure the amount of lateral displacement at multiple points with a very simple structure. In other words, when measuring the amount of displacement between a reference line and a certain point on the rail, the method of measuring only the amount of displacement at one point for each reference line requires measuring many points to improve accuracy. If an average value is to be calculated, the number of reference lines increases accordingly, which has the disadvantage of complicating the structure of the device. However, in the method of the present invention, the main reference line, which was conventionally used exclusively to measure the amount of lateral displacement at a straightening point, is also used to measure the amount of lateral displacement of an unstraightened rail. , the structure of the track straightener is simplified in order to give the main reference line two roles.

In addition, if you try to calculate the average forward displacement of multiple points on an unaligned rail by using multiple sub-base lines alone, as the number of sub-base lines increases, the front end of the main base line or the straightening point will However, in the method of the present invention, the displacement at the front end of the main reference line can be measured using the sub-reference line. Since the lateral displacement of the unaligned rail near the alignment point is detected using the main reference line, the average value of the lateral displacement of the rail that has the most influence on the lateral displacement measurement at the alignment point is determined. This makes it possible to improve measurement accuracy.

Further, in the device of the present invention, the lateral displacement measuring section of the sub reference line and the unaligned rail can be used as it is as a support member for the front end of the main reference line.

b The lateral displacement measuring section between the main reference line and the unaligned rail can be used as it is as a support member for the rear end of the sub-reference line.

Therefore, although the unaligned rail has multiple lateral displacement measuring sections, the number of members (trucks) for supporting the lateral displacement measuring sections and the main and sub reference lines is small. This has the advantage of simplifying the structure of the track straightening machine.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the definition of the amount of lateral displacement of the track, etc. Figure 2 is an explanatory diagram of the principle of the conventional adjustment method, and Figure 3 is an explanatory diagram of the definition of the amount of lateral displacement of the track.
Figure 4 is an explanatory diagram of the principle of the straightening method according to the present invention.
The figure is a side view of a track straightening device according to an embodiment of the present invention attached to a track straightening machine.
It is a schematic diagram seen from the direction. 1,1'...Rail, 2...Track straightening machine, 4...
...Street alignment device, 10...Front reference section, 11...Detection section, 12...Rear reference section, 13...Main reference line, 1
4... Arithmetic unit, 15... Rail lateral movement device, 16
...Sub reference line, 19, 21, 23, 25, 28,
31... Trolley, 22, 24, 26, 29, 37...
... Potentiometer, 27 ... Zero point control device, 3
2... Servo motor, 34... Screw shaft, 35...
Adjustment barrel, 38...operation unit, 39...calculation unit, A _n ,
B _n , C _n , D _n , F _n ... measurement section, E _n ... position detection section.

Claims (1)

[Scope of Claims] 1. Measuring the amount of lateral displacement between two or more points on the rail in the unaligned part of the track and the sub reference line and the main reference line,
In addition to determining the amount of forward displacement of the rail in the unaligned section, the amount of lateral displacement between one or more points on the rail in the section where alignment has been completed and the main reference line is determined, and the rear displacement of the rail in the section where alignment has been completed is determined. The average displacement amount is determined from the front displacement amount and the rear displacement amount, the average displacement amount is corrected according to the orbit conditions, work conditions, etc. to determine the set displacement amount, and the set displacement amount and the orbit are calculated. The amount of adjustment is determined from the measured lateral displacement amount between the rail at the position to be adjusted and the main reference line, and the rail of the track is laterally moved by the amount of adjustment to perform adjustment according to the track. How to align the track. 2. A plurality of lateral displacement measuring parts attached to the front part of the track straightening machine and moving together with the track straightening machine, and a sub reference line having one end attached to one of these lateral displacement measuring parts, At least one of the plurality of lateral displacement measurement units measures the lateral displacement between the sub reference line and a point on the unaligned rail, and one end of the separately provided main reference line is connected to the unaligned rail and the sub reference line. The lateral displacement measuring section is connected to a lateral displacement measuring section that measures lateral displacement with respect to the reference line, and the lateral displacement measuring section to which one end of the sub-reference line is attached measures the lateral displacement between this main reference line and a point on the unaligned rail. and a front reference part that is attached to the middle part of the track straightening machine, moves together with the track straightening machine, and detects the amount of lateral displacement between the main reference line and the position where the rail of the track is to be straightened. a detection unit; and one or more lateral displacement measuring units that are attached to the rear of the track straightening machine and move together with the track straightening machine, the other end of the main reference line being attached to the lateral displacement measuring unit. a position detecting section provided between the lateral displacement measuring section and the detecting section, and a zero point control controlling the other end of the main reference line so that the output of the position detecting section becomes zero. a rear reference part having a device; the front reference part determines the amount of forward displacement of the rail in the unaligned part of the track; the rear reference part determines the amount of rear displacement of the rail in the straightened part of the track; An average displacement amount is determined from the displacement amount and the rear displacement amount, and a set displacement amount is determined by correcting the average displacement amount according to track conditions, work conditions, etc. a computing unit that calculates an adjustment amount from the measured lateral displacement amount of the rail at a position on the track to be adjusted; and a rail lateral movement device that is operated by the output from the computing unit and moves the rail laterally by the adjustment amount. A track straightening device characterized by having: