JP2010216096A - Sleeper for automatically correcting settlement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeper for automatically correcting settlement, which enables the adjustment of large level displacement. <P>SOLUTION: This sleeper for automatically correcting the settlement includes: an upper block (11) to which traveling rails (R1 and R2) are fastened; a lower block (12) in which the upper block (11) is movably housed; and a correction mechanism (14) which adjusts the level displacements of the traveling rails (R1 and R2) on the basis of the displacement of the lower block (12). The correction mechanism (14) comprises an inner cylinder (14a) which is fixed to the upper block (11) and which has a dischargeable built-in filler (15), and an outer cylinder (14b) into which the inner cylinder (14a) is movably inserted and which is filled with the discharged filler (15); and the outer cylinder (14b) is swingably supported by the lower block (12). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automatic settlement correction sleeper corresponding to uneven settlement.

  A sleeper with an automatic subsidence correction mechanism having the following automatic subsidence correction mechanism has been proposed for the non-uniform subsidence of sleepers.

  The sleeper with an automatic settlement correction mechanism has a two-stage structure of an upper structure and a lower structure. The upper structure and the lower structure are coupled by a guide post and an automatic settlement correction mechanism. The upper structure is composed of a synthetic sleeper and an automatic settlement correction mechanism, and is fixed to the traveling rail by a fastening device. A box-shaped substructure surrounds the superstructure. The container and guide post of the automatic settlement mechanism are attached to the bottom. The substructure moves freely in the vertical direction so as to follow the support surface. When uneven settlement in the longitudinal direction of the rail occurs, a gap is generated between the upper and lower structures, and the automatic settlement correction mechanism corrects the gap. The sleeper has a guide post attached to the lower structure. When the lower structure moves up and down with respect to the upper structure, the guide post guides the upper structure (see Patent Document 1).

  Another automatic settlement correction mechanism has a lower structure and an upper structure with a container having an outflow hole. The container is filled with a granular material. When the lower structure sinks, the granular material flows out into the container of the lower structure through the outflow hole, and corrects the sinking (see Patent Document 2).

JP 2006-274720 A JP 2007-162293 A

  In the sleeper with the automatic settlement compensation mechanism, a clearance is provided between the compensation settlement mechanism and the guide post. For this reason, the level displacement generated at both ends of the sleeper due to the operation error and the inclination of the ground was considered to be acceptable to some extent. However, the automatic settlement compensation mechanism becomes difficult to operate due to the interference between the inner cylinder and the outer cylinder when a certain gradient is exceeded. Further, when the level displacement increases, there is no clearance between the guide post and the upper structure, and the operation is restricted. As a result, the raising and lowering of the upper and lower structures is restricted and the upper and lower structures are not operated.

  Therefore, an object of the present invention is to provide an automatic settlement settlement sleeper that can be adjusted for a large level displacement.

  Hereinafter, the features of the present invention will be described with reference numerals. Note that the reference numerals are for reference, and the present invention is not limited to the embodiments.

  A feature of the present invention is an automatic settlement correction sleeper (10) having the following elements. The sleeper (10) includes an upper block (11) to which travel rails (R1, R2) are fastened, a lower block (12) in which the upper block (11) is movably accommodated, and a lower block (12). And a correction mechanism (14) for adjusting the level displacement of the traveling rails (R1, R2) based on the displacement of the vehicle. The correction mechanism (14) is fixed to the upper block (11) and includes an inner cylinder (14a) containing a dischargeable filler (15), and the inner cylinder (14a) is movably inserted and discharged. And an outer cylinder (14b) filled with the filler (15). The outer cylinder (14b) is swingably supported by the lower block (12).

  In the above characteristics, the outer cylinder (14b) has a spherical seat (14d) supported by the lower block (12).

  The lower block (12) has a guide post (13a) for guiding the upper block (11). The guide post (13a) was swingably supported by the lower block (12).

  The guide post (13a) has hinges (13b, 13c).

  The sleeper has a resistance material (16A, 16B) in contact with the longitudinal end face of the automatic settlement correction sleeper (10) of the upper block (11).

  When the subsidence occurs in the automatic settlement correction sleeper, and the level displacement occurs in the traveling rail, the lower block moves away from the upper block. Accordingly, the inner cylinder and the outer cylinder are separated from each other, and a space is formed between them. The filler is discharged from the inner cylinder to the outer cylinder and fills the space.

  Furthermore, when the same sleeper is gradually settling down and the level displacement of the traveling rail is increased, the outer cylinder is inclined with respect to the inner cylinder, and relative movement between the outer cylinder and the inner cylinder becomes difficult. At this time, the outer cylinder swings with respect to the lower block, adjusts the attitude of the outer cylinder with respect to the inner cylinder, and enables relative movement between the inner cylinder and the outer cylinder. As a result, the traveling rail maintains its original posture even when it is largely unsettled.

  Further, since the spherical seat can swing with respect to the lower block, the posture of the outer cylinder with respect to the inner cylinder is adjusted, and the inner cylinder and the outer cylinder can be moved relative to each other.

  Further, when the sinking of the sleepers progresses and the level displacement of the traveling rail increases, the hinge swings the guide post with respect to the lower block and adjusts the posture of the guide post with respect to the upper block. As a result, the guide post guides the upper block against large uneven settlement.

  Also, the resistance material resists the upper block and prevents lateral displacement of the block.

It is a schematic elevation view of the automatic settlement settlement sleeper according to the first embodiment. It is a schematic elevation view which shows the operation | movement of the sleeper shown in FIG. It is a schematic elevation view of the automatic settlement settlement sleeper according to the second embodiment. 1 is a schematic elevation view of a test apparatus according to an example. (A) It is a graph which shows the result of the effect test at the time of loading, (B) is a graph which shows the result of the effect test at the time of unloading.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

First Embodiment As shown in FIG. 1, an automatic settlement settlement sleeper 10 according to a first embodiment is installed on an upper block 11 to which travel rails R <b> 1 and R <b> 2 are fastened and a road bed B <b> 1. And a lower block 12 that can be accommodated. The sleeper 10 includes guide mechanisms 13 </ b> A and 13 </ b> B attached to the lower block 12. The sleeper 10 has an automatic settlement correction mechanism group 14 arranged between the upper block 11 and the lower block 12.

  The upper block 11 has a long rectangular parallelepiped shape and can be inserted into the lower block 12. The upper block 11 has insertion holes 11a and 11b extending in the vertical direction at both ends in the longitudinal direction. The upper block 11 is manufactured from reinforced concrete including prestressed concrete, FRP, other synthetic resins, wood, or the like.

  The lower block 12 has a box shape corresponding to the shape of the upper block 11. The lower block 12 has a bottom wall 12a and side walls 12b and 12c extending upward from both side ends of the bottom wall 12a. The upper part of the lower block 12 is open. The bottom wall 12 a is separated from the bottom surface of the upper block 11. The interval between the side walls 12 b and 12 c is set to be larger than the length of the upper block 11. The lower block 12 is made of metal such as steel, or synthetic resin.

  Each guide mechanism 13 </ b> A, 13 </ b> B has a guide post 13 a that passes through the upper block 11 through the insertion holes 11 a, 11 b of the upper block 11. Each guide mechanism 13A, 13B has hinges 13b, 13c that support the guide post 13a in a swingable manner. This hinge has a support 13b installed on the bottom wall 12a and a rotating shaft 13c inserted into the guide post 13a and supported by the support 13b.

  The automatic settlement correction mechanism group 14 includes four automatic settlement correction mechanisms 14A, 14B, 14C, and 14D. Note that the automatic settlement correction mechanism group may have not only a 4-unit configuration but also a 2-unit or 3-unit configuration. Each automatic settlement correction mechanism 14A, 14B, 14C, 14D is fixed to the inner wall 14a attached to the upper block 11, the outer cylinder 14b supported by the bottom wall 12a of the lower block 12, and the bottom wall 12a. A pressing member 14c that engages with the outer cylinder 14b is provided.

  The inner cylinder 14a has a bottomed cylindrical shape. The inner cylinder 14a is movably inserted into the outer cylinder 14b. The inner space of the inner cylinder 14a has a filled granular material 15. The granular material 15 is, for example, sand, a metal ball such as a bearing, or a ceramic ball. The bottom of the inner cylinder 14a has a hole 14a1 for discharging the granular material.

  The outer cylinder 14b has a bottomed cylindrical shape. The outer cylinder 14b accommodates the granular material 15 discharged from the inner cylinder 14a. The outer cylinder 14b includes a spherical seat 14d on the outer surface of the bottom. The spherical seat 14d is slidably in contact with the bottom wall 12a of the lower block 12. Therefore, the outer cylinder 14 b can swing in all directions with respect to the bottom wall 12 a of the lower block 12. In place of the spherical seat, a semi-cylindrical seat or a combination of a rotating shaft and a rotating bearing may be used.

  Next, the operation of the automatic settlement correction sleeper 10 will be described.

  As shown in FIG. 1, when the railway vehicle passes on the traveling rails R <b> 1 and R <b> 2 of the sleeper 10, a downward load is applied to the sleeper 10. Here, as shown in FIG. 2, when the road bed B1 is tilted at an angle θ with respect to the longitudinal horizontal plane of the sleeper 10 by a load, the lower block 12 also follows the road bed B1 and tilts at an angle θ.

  At this time, the lower block 12 is guided by the guide post 13a of the guide mechanism 13B and descends with respect to the upper block 11 by an angle θ from the guide mechanism 13A. The inner cylinder 14a and the outer cylinder 14b of the automatic settlement compensation mechanisms 14A, 14B, 14C, and 14D move relative to each other and are separated in the vertical direction. Between the bottom of the inner cylinder 14a and the bottom of the outer cylinder 14b of the correction mechanisms 14A, 14B, 14C, 14D, spaces S1, S2, S3, and so on according to the distance of relative movement between the inner cylinder 14a and the outer cylinder 14b. S4 is formed. The granular material 15 in the inner cylinder 14a is discharged from the hole 14a1 by its own weight and accommodated in the outer cylinder 14b. The granular material 15 fills the spaces S1, S2, S3, and S4 and supports the inner cylinder 14a. Thereby, the upper block 11 and the traveling rails R1 and R2 are kept horizontal.

  When the lower block 12 further sinks, the outer cylinder 14b of each correction mechanism 14A, 14B, 14C, 14D is inclined with respect to the inner cylinder 14a. The inner cylinder 14a comes into contact with the inner surface of the outer cylinder 14b, making it difficult to operate. Further, the guide post 13 a is inclined with respect to the upper block 11. The guide post 13a comes into contact with the inner walls of the insertion holes 11a and 11b, and the operation becomes difficult (see the phantom line of the guide post 13a in FIG. 2).

  At this time, the spherical seat 14d of the correction mechanisms 14A, 14B, 14C, 14D swings the outer cylinder 14b. The outer cylinder 14b returns to the original posture with respect to the inner cylinder 14a, the inner cylinder 14a becomes movable with respect to the outer cylinder 14b, and the relative movement is resumed. On the other hand, the guide posts 13a of the guide mechanisms 13A and 13B swing around the rotation shaft 13c of the hinge. The guide post 13 a returns to the original posture with respect to the upper block 11. The lower block 12 is guided by the guide post 13a of the guide mechanism 13B and descends with respect to the upper block 11 by an angle θ from the guide mechanism 13A. Accordingly, the uneven settlement of the sleeper 10 is corrected in accordance with the inclination generated on the road bed B1, and the upper block 11 and the traveling rails R1 and R2 are kept horizontal.

  According to the above embodiment, when a level displacement occurs in the traveling rails R1, R2 of the automatic settlement correction sleeper 10, the automatic settlement correction mechanisms 14A, 14B, 14C, 14D can adjust the level displacement. it can. Thereby, the original posture of the traveling rails R1 and R2 is maintained.

Second Embodiment As shown in FIG. 3, the automatic settlement correction sleeper 10A of the second embodiment is characterized in that it includes lateral resistance plates 16A and 16B. Other constituent members are the same as those in the first embodiment.

  The lateral resistance plates 16A and 16B are sandwiched between the upper block 11 and the lower block 12 and the ballast B2 and extend in the vertical direction, and from above the upper ends of the resistance plates 16a and 16a to the upper block 11 The fastening plates 16b and 16b extend, and the fasteners 16c and 16c for fixing the fastening plates 16b and 16b to the upper block 11 are provided.

  Each of the resistance plates 16a and 16a is in contact with the end face of the upper block 11 in the longitudinal direction of the sleeper 10A. Each fastener 16c is, for example, a bolt.

  According to the automatic settlement correction sleeper 10A, when the railway vehicle travels on the traveling rails R1 and R2, the railway vehicle applies a force to the upper block 11 in the lateral direction. Further, when the traveling rails R1 and R2 are thermally expanded, a lateral force due to the buckling stress is applied to the upper block 11. These lateral forces attempt to move the upper block 11 laterally.

  At this time, the resistance plates 16a and 16a of the lateral resistance plates 16A and 16B resist the upper block 11 and stop the movement of the upper block 11 in the lateral direction. This prevents lateral displacement of the sleeper 10A.

  It should be noted that the above embodiments can be changed and modified without changing the gist of the invention.

Example In order to confirm the effect of the automatic settlement settlement sleeper 10 of the first embodiment, a repeated loading test using a full-scale track model was performed.

  In FIG. 4, the test apparatus has a soil tank 21, a roadbed 22 disposed on the bottom of the soil tank 21, a roadbed 24 disposed on the roadbed 22, and the sleeper 10 on the roadbed 24. Here, let the direction in which the sleeper 10 extends be a longitudinal direction. The roadbed 22 has a gradient in the longitudinal direction in order to set the amount of settlement at both ends of the sleeper 10. The roadbed 22 is composed of particle size-adjusted crushed stone. The road bed 24 is made of silica sand. Silica sand is sprinkled on the roadbed 22 to correct the surface.

  The test apparatus includes a soil pressure gauge 23 in the roadbed 22, displacement gauges 25A and 25B arranged on the left and right ends of the upper block 11, and guide posts 13a of the left and right guide mechanisms 13A and 13B. Displacement meters 25C and 25D arranged in The displacements indicated by the displacement meters 25A and 25B indicate the displacements of the left and right ends of the sleeper 10, and this displacement is defined as the sleeper displacement. The displacements indicated by the displacement meters 25C and 25D indicate the displacements of the left and right ends of the road bed 24, and are referred to as road bed displacements.

  The test conditions are as follows.

Load amplitude: 100kN
Loading waveform: sine wave Loading frequency: 300,000 times Loading frequency: 5Hz

  5 (A) and 5 (B) show the relationship between the sleeper displacement and the roadbed displacement and the number of times of loading at the time of loading and unloading, respectively. □ is a sleeper displacement indicated by the displacement meter 25A. (2) is a sleeper displacement indicated by the displacement meter 25B. Δ is the bed displacement indicated by the displacement meter 25C. ▲ is the roadbed displacement indicated by the displacement meter 25D.

After 300,000 loadings, the bed displacement: 14.5mm on the right side, 9.5mm on the left side
Sleeper displacement: 1.0mm on the right, 0.5mm on the left

Operation amount of automatic settlement compensation mechanism Right side: 13.5mm
Left side: 9mm

  Even when the difference in the bed bed displacement was about 5 mm, there was almost no difference in the sleeper displacement. The operation amount of the automatic subsidence compensation mechanism offsets the difference of the bed bed displacement. The operation of the automatic settlement compensation mechanism was not affected, and the compensation mechanism compensated for the unsettled settlement of the sleeper 10.

10, 10A Automatic subsidence correction sleeper 11 Upper block 12 Lower block 13A, 13B Guide mechanism 14A, 14B, 14C, 14D Automatic subsidence correction mechanism 16A, 16B Lateral resistance plate

Claims (5)

An upper block to which the traveling rail is fastened;
A lower block in which the upper block is movably accommodated;
A correction mechanism for adjusting the level displacement of the traveling rail based on the displacement of the lower block,
The correction mechanism is
An inner cylinder that is fixed to the upper block and contains a filler that can be discharged;
An outer cylinder in which the inner cylinder is movably inserted and filled with the discharged filler,
The said outer cylinder is supported by the lower block so that rocking | fluctuation is possible, The automatic settlement correction sleeper characterized by the above-mentioned.   The automatic squat correction sleeper according to claim 1, wherein the outer cylinder has a spherical seat supported by a lower block. The lower block has a guide post for guiding the upper block,
2. The automatic settlement settlement sleeper according to claim 1, wherein the guide post is swingably supported by the lower block.   The automatic settlement settlement sleeper according to claim 3, wherein the guide post has a hinge.   The automatic settlement correction sleeper according to claim 1, further comprising a resistance material in contact with an end face in the longitudinal direction of the automatic settlement correction pillow of the upper block.

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