JPH01127301A - Manufacture of pc sleeper - Google Patents

Abstract

PURPOSE:To reduce the product-cost of a PC sleeper by a method in which by using the mold capable of changing its mold length, the mold is caused to correspond to the length-change of a PC sleeper, and by suitably arranging an insert fitting at a prescribed position of the mold, the mold is caused to correspond to raid fastening positions, the number of fastenings and the change of the crossing angle of the rail. CONSTITUTION:The sleeper constituting each common part of the PC sleeper for point part P, lead part L and crossing guard part C, is produced with a stationary mold. On one hand, the partition frame 4 of the mold end is fixed to the length corresponding to the PC sleeper for the point part P, the lead part L and the crossing part C by using the mold 1, and the length of the mold is set. An insert fitting 5 or 6 is arranged at a prescribed position and is fixed thereto, and a mold part 10 is filled with concrete, and then the mold is released after the concrete has been solidified. Then, for the rail fastening positions, the number of fastenings and the change of crossing angle, prescribed insert jigs 5 or 6 corresponding to the set mold length are slidably fixed to a prescribed position.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a method for manufacturing PC sleepers.

(Prior art and its problems) A turnout is a device that branches a train in the desired direction using a structure that combines rail materials, and as shown in Figure 15, there is a point part (P), a lead part (L) The point part (P) combines the basic rail SR and the tongue rail TR, the lead part (L) combines the main rail MR and the lead rail LR, and the crossing guard part ( In C), the main rail MR, guard rail GR, and crossing FR are combined, each rail material is attached to the floorboard with washers, etc., and the floorboard is attached to the wooden sleepers with large nails or screw nails. However, wooden sleepers corrode and decay over time, so they need to be replaced regularly, and because they lack stability, track damage tends to progress, requiring a great deal of effort for maintenance. Furthermore, fastening the floorboards using large nails or screw nails has disadvantages such as unstable fastening force, which may cause the turnout rail to be out of track or swell.

In order to eliminate such conventional drawbacks, it is necessary to convert the sleepers into PC sleepers and at the same time provide a structure for elastically fastening the rails to the PC sleepers when fastening the turnout.

However, in order to convert the turnout sleepers to PC, unlike general tracks, there are two things that need to be done: ■ Changes in the rail fastening position on the PC sleepers, ■ Changes in the intersection angle between the rail and the sleepers, ■
It is necessary to manufacture various PC sleepers in response to changes in the number of fasteners on the sleepers and changes in sleeper length, and molds for each must be prepared, which poses problems in terms of manufacturing costs. Have difficulty.

(Objective of the Invention) An object of the present invention is to provide a method for manufacturing PC sleepers that can solve the above-mentioned problems of making PC sleepers.

(Structure of the Invention) The present invention uses a common mold, makes the partition plate at the end of the mold movable, sets the mold length in accordance with the length of the PC sleeper,
We focused on the fact that the above problems can be solved by sliding and fixing a predetermined insert jig in a predetermined position according to the set mold length in response to changes in the rail fastening position, number of pieces, and intersecting angle. ``At least one end of a long sleeper mold corresponding to the maximum length of a turnout sleeper is equipped with a mold end partition frame that can be moved and fixed in the longitudinal direction of the mold, and the point part ( pi, P for lead part (L) and crossing guard part (c)
While setting the above partition frame to a mold length equivalent to that of the C sleeper, set the point part (p), lead part (L), and crossing guard part + floor plate receiving part forming hardware or rail at the required position of the CJ PC sleeper. The method of manufacturing PC sleepers includes the steps of: setting the fastening part forming hardware and the embedded metal fittings for fixing the leaf springs, filling the mold with concrete, solidifying it, and then releasing the mold.

In the present invention, the length of the mold can be adjusted by moving one of the end partition frames in the longitudinal direction of the mold so that it can be fixed. It may be made movable.

In addition, in the method of the present invention, either the concrete pouring method facing downwards or upwards can be adopted; however, when the concrete pouring method facing downwards is adopted, the bottom of the mold, which has an inverted trapezoidal longitudinal section, An insert jig that combines the hardware for forming each floor plate holder and the embedded member for fixing the leaf springs is installed, and the insert jig is attached to the bottom of the mold using a movable magnet surface along the longitudinal direction of the mold. It is preferable to fix it at a predetermined position while adjusting the directional position. On the other hand, when adopting the seating surface upward injection method, the insert jig is provided so as to be movable in the longitudinal direction along the upper edge of the mold, which has a trapezoidal cross section, and the longitudinal position within the mold can be adjusted. It is best to fix it in a predetermined position while doing so.

Further, it is convenient if the metal fittings forming the floor plate holder are made of a material that can be peeled off or destroyed during mold release.

The above manufacturing method shows the case where the entire PC sleeper is manufactured integrally using a mold, but the common parts are manufactured using a common fixed mold, while the remaining parts are manufactured using the same movable mold as described above. Therefore, the second configuration of the present invention is based on "point part (P), lead part (L), and crossing guard part + PC for C1".
While the sleeper parts that make up the common parts of the sleepers are manufactured using fixed molds, the non-common parts that make up the remaining parts of the PC sleepers for the point part (p), lead part (L), and crossing guard part (c) are manufactured using fixed molds. Manufactured with a variable mold having a length corresponding to the maximum length of the remaining sleepers, and capable of attaching a partition plate frame that can be moved and fixed in the longitudinal direction of the mold to at least one end of the mold, and combined with the common sleeper part described above. A method for manufacturing PC sleepers, the gist of which is to connect the variable sleeper parts to the variable sleeper parts via sleeper joints.

The above manufacturing method is particularly applied to the method of manufacturing PC sleepers for the crossing guard part (c), and the guard side is manufactured with the same fixed mold to manufacture the layered sleepers with joints, while the central part is the amount of dimensional change of the crossing part. It is preferable to adopt the manufacturing method using the variable mold according to the above.

Hereinafter, the present invention will be explained in detail based on specific examples shown in the accompanying drawings.

(Example) Figure 1 is a longitudinal side view of a mold with a downward injection method on the seat surface.
FIG. 2 is an end view of the mold, and (1) shows the entire mold, where the mold part 10 filled with concrete has an inverted trapezoidal cross section;
The top surface and both ends are open, and the upper and lower side edges 11, 12 protrude laterally. The cough mold +11 is located on both sides 22.2 of the base part (2), from which the orbital recess 21 extends downwardly and centrally.
2 by supporting members (F) erected on the lower side edges 12.
12 while leaving a magnet movement space S,
A cart (3) on which a magnet plate M is laid on the lower surface of the bottom 10a of the mold part 1O runs in the longitudinal direction.

On the other hand, end partition frames (4), (4) which are slidable in the longitudinal direction by riding on the upper side edges 11.11'' are attached to both ends of the open mold part IO.The partition frames (4)
A pair of lips 41, 41 oriented in the longitudinal direction are welded to each other, and can be fixed to the upper side edges 11 with vices 42, 42.

Figures 5, 6, and 7 show an insert jig (5) that combines the point part (PL) and the floor plate receptacle forming hardware 51 of the crossing part (C) and the embedded member 52, 52 for fixing the leaf spring. A plan view, a side view, and an end view are shown, and the floor plate receptacle forming hardware 51 has a recessed part as a whole to form a floor plate receptacle, both ends are inclined in parallel, and the fixing embedded member 52 is It has a cylindrical shape with a thread groove that screws into the fastening pole (B). This insert jig (
In 5), with the plate spring fixing embedded member 52 erected upward, the floor plate receptacle forming hardware 51 is installed at the bottom of the mold, and this is mounted on a cart that can be moved along the lower surface of the mold bottom in the longitudinal direction. (3
) can be fixed at a predetermined position while articulating the longitudinal position within the mold with the M surface of the magnet plate.

Also, Figures 8, 9 and 10 show the lead part (L).
Rail fastening part forming hardware 61 and plate spring fixing embedded member 6
The rail fastening part forming hardware 61 has a recessed part as a whole, both ends of which are arcuate, and a fixing embedded member is shown. Reference numeral 62 has a cylindrical shape with a screw groove for screwing into the fastening pole (B). This insert jig (6) is also similar to the above insert jig (5), with the plate spring fixing embedded member 62 erected upward, the floor plate receiver forming hardware 61 is installed at the bottom of the mold, This is placed on a magnet plate M on a trolley (3) that can be moved along the longitudinal direction of the bottom surface of the mold.
It is possible to fix it in a predetermined position while adjusting the longitudinal position within the mold using the surface.

On the other hand, Fig. 3 shows a longitudinal side view of the mold for the upward injection method on the seating surface, and Fig. 4 shows an end view thereof. The mold part 10 has a trapezoidal longitudinal section, and the seat surface and both ends are open, and the upper and lower side edges 11 and 12 protrude laterally.Both ends of the open mold part 10 have an upper side Rim 11
．． End partition frames (4), (4) are mounted on the upper side edge 11 and are slidable in the longitudinal direction, and the partition frames (4) are fixed to the upper side edge 11 with a vise 42.42. It has become. In addition, the above-mentioned figures 5, 6 and 7
In a state where the insert jig (5), which is not shown in the figure, is a combination of the floor plate receptacle forming hardware 51 and the embedded members 52 and 52 for fixing the leaf spring, the embedded member 52 for fixing the leaf spring is suspended downward.
The floor plate receptacle forming hardware 51 is mounted on the upper side edge 11.11 so as to be slidable in the longitudinal direction, and is moved along the longitudinal direction to a predetermined position while adjusting the longitudinal position in the mold using a vise 53. It can be fixed in position.

Note that, like the insert jig (5), the insert jig (6) can also be fixed at a predetermined position while adjusting its longitudinal position within the mold.

In addition, the seat surface downward injection type shown in Figures 1 and 2, and Figure 3,
In either case of the seat surface upward injection type shown in Fig. 4,
Although the installation of PCtvt +l, which is necessary for manufacturing PC sleepers, is not shown, it is necessary to install P according to the sleeper length to be manufactured.
Needless to say, it is necessary to set aside the C steel bars, fix the end partition temporary frame, install the PC steel bars into the holes previously provided in the partition plate, and then pour concrete.

(Manufacturing example) In both the above-mentioned seat surface downward injection method and seat surface upward injection method, the mold is molded to the length corresponding to the PC sleeper for the point part (p), lead part (i) and crossing part (c). The end partition frame (4) was fixed, the mold length was set, the insert hardware (5) or (6) was arranged and fixed at a predetermined position, concrete was filled into the mold part 10, and it was solidified. After that, when the mold is released, the PC sleeper at the point part (ρ) whose plan view and cross-sectional view are shown in FIGS. 11 and 12, and the lead portion +11 whose plan view and cross-sectional view are shown in FIGS.
PC sleepers will be manufactured.

(Example of use) FIGS. 15, 16, and 17 show a plan view of the point part (pl, an enlarged view of its essential parts, and a cross-sectional side view thereof. On the PC sleeper 110, there are a pair of left and right concave floor plate supports. parts 110a, 110a are provided, and embedded plugs 110 for fastening bolts are provided at both ends of the cough catch part 110a.
Embed and fix b. On the other hand, the basic rail SR and the tongue rail TR are connected to the floor plate 120 by absorbing the intersecting angle of the rails and changes in the rail position, and the floor plate 120 is connected to the floor plate receiving portion 110 via the track pad 130.
Place it in a. Both ends of the floor plate 120 are connected to spring holders 14.
The fastening bolt 160 is tightened by force and elastically fastened at the tip of the double slope spring 150, 150 whose spring end is placed on top of the spring.

Next, FIGS. 19, 20, and 21 show a plan view, an enlarged view of the main part, and a cross-sectional side view of the lead part (L), and show a pair of left and right main holes on the upper part of the lead part PC sleeper 210. A recessed receptacle 210a for receiving each rail of the pair of lead rails LR at the center of the rail MR1 is provided, embedded plugs 21QC1210c of fastening bolts are embedded in both sides of the receptacle, and steps are formed on both sides located outside of the recessed receptacle 210a. An arcuate receiving portion 210b is provided. Each rail M is connected to each receiving portion 210a via a track pad 230.
R and LR are placed a, a spring holder 240 having an arcuate portion with the same radius on the back side is fitted into both lower ends of each rail along the arcuate holder 210b, the spring butt is placed on the holder 240, and the tip The angle of arrangement of the parts with respect to the rails is adjusted, and the fastening bolts 160 are tightened by force at the tips of the double slope springs 220, 220, and the fastening bolts 160 are elastically fastened.

Finally, FIGS. 22 and 23 show a plan view of the crossing guard part (C) and an enlarged cross-sectional side view of its essential parts. * is provided, and the receiving part 310a
Embedded fastening bolt plugs 310b are embedded and fixed in both ends of the bolt. On the other hand, on the floor plate 320 are the main rails MR,
The guardrail GR and the crossing FR are connected to the rails by absorbing the intersecting angle of the rails and changes in the rail position, and the floor plate 320 is connected to the floor plate receiving portion 310 via the track pad 330.
Place it in a.

The fastening bolts 350 are tightened by pressing the ends of the floor plate 320 with the tips of 2 m temporary springs 330, 330 whose spring ends are placed on the spring pedestals 340, and elastically fastening them.

In addition, although the above case shows the case where the entire PC sleeper is manufactured integrally with a mold, the common parts of the PC sleeper for the point part (P), lead part (L) and crossing guard part fC1 are While the sleeper part of the eggplant is manufactured using a fixed mold, the non-common parts forming the remaining parts of the PC sleeper for the point part (pi, lead part (L) and crossing guard part iC1) are manufactured using the mold (1) shown in the above example. Manufactured with a variable mold having a length corresponding to the maximum length of the residual sleeper using It is also possible to manufacture PC sleepers by connecting sleeper parts and variable sleeper parts via sleeper joints.

In particular, in the case of PC sleepers for the crossing guard part (C), the fixed sleepers with joints are manufactured using the same fixed mold for the guard example, while the central part is manufactured using the variable mold described above according to the amount of dimensional change of the crossing part. Those skilled in the art can also easily carry out the following based on the above embodiments.

(Effects of the Invention) As is clear from the above description, according to the present invention, the mold length is Using a mold that can change the length of the PC sleeper, changes in the rail fastening position, number of fastenings, and rail intersection angle are set and installed at predetermined positions for the mold that can change the mold length. This can be achieved by appropriately arranging available insert hardware, so there is no need for a number of molds corresponding to the shape of the sleeper, and a variety of PC sleepers for turnouts can be manufactured using a common mold. ,
Manufacturing costs can be reduced and turnouts can be converted to PC sleepers. Therefore, not only the durability of the sleepers is improved (but also elastic fastening with stable fastening force can be implemented at the same time, it is possible to prevent the turnout rail from advancing, reduce track deviation, and reduce the wheel ring. It has the advantage of reducing track damage due to its buffering effect against heavy and lateral pressure.

[Brief explanation of the drawing]

Figure 1 is a side view in the longitudinal direction of a mold that uses a downward injection method on the seat surface.
Fig. 2 is an end view of the mold, Fig. 3 is a longitudinal side view of the mold for upward injection on the seating surface, Fig. 4 is an end view of the mold, Fig. 5, f.
Fig. f16 and Fig. 7 are a plan view and a side view of an insert jig (5) that combines the floor plate receiver forming hardware 51 of the point portion (ρ) and the crossing portion (C) and the embedded metal fittings 52 and 52 for fixing the leaf spring. The figure, end view, FIG. 8, FIG. 9, and FIG. 10 are inserter 1/jig (6) that combines the rail fastening part forming hardware 61 of the lead part (L) and the embedded hardware 62 for fixing the leaf spring. top view, side view and end view of
11 and 12 are a plan view and a sectional view of the PC sleeper at the point part (pl), FIGS. 13 and 14 are a plan view and a sectional view of the PC sleeper at the lead part (L),
FIG. 15 is a schematic plan view showing the entire turnout to which the present invention is applied, FIG. 16 is a plan view of the point part fpl, and FIG.
The figure is an enlarged view of the main parts, Figure 18 is a cross-sectional side view, and Figure 1 is a cross-sectional side view.
Fig. 9 is a plan view of the lead part (L), Fig. 20 is an enlarged view of its main parts, Fig. 21 is a cross-sectional side view thereof, Fig. 22 is a plan view of the crossing guard part (c), and Fig. 23 is a plan view of the lead part (L). It is an enlarged cross-sectional side view of the main part. (1)...Mold, (3)...Dolly, (4)...End partition frame, (5) and (6)...Insert jig (pl...
Point part, 110 - PC sleeper 110a... Concave floor plate receiving part, 120 - Floor plate 150... 1 anti-spring (L) - Lead part, 210 - PC sleeper 2
10a...Concave receiving part, 210b...Circular part 220
・・Leaf spring, 240 ・Spring holder (c)・Crossing guard part, 310 ・・PC sleeper, 310a ・・Concave floor plate holder 320 ・・Floor plate, 330 ・Leaf spring

Claims (1)

[Scope of Claims] [1] A mold end partition frame that can be moved and fixed in the longitudinal direction of the mold is attached to at least one end of a long sleeper mold corresponding to the maximum length of the turnout sleeper, Point part (p)
, lead part (L) and crossing guard part (c)
While setting the above-mentioned partition frame to the mold length corresponding to the PC sleeper for the PC sleeper, set the metal fittings for forming the floor plate receptacles at the required positions of the PC sleeper for the point part (p), lead part (L), and crossing guard part (c). Or a PC characterized by setting the rail fastening part forming hardware and the plate spring fixing embedded member, filling the mold with concrete, solidifying it, and then releasing the mold.
Method of manufacturing sleepers. [2] The long sleeper mold described above has a vertical cross-section of an inverted trapezoid and is injected downward from the seat surface, and each floor plate receptacle forming metal fitting or rail fastening part forming metal fitting and plate spring fixation installed on the sleeper seat side are installed on the sleeper seat side. Item [1] above, wherein the insert jig combined with the embedding member is fixed at a predetermined position while adjusting the longitudinal position within the mold using a magnet surface that is movable along the longitudinal direction of the bottom surface of the mold. A method for manufacturing PC sleepers. [3] The long sleeper mold described above has a trapezoidal longitudinal section and is of an upward injection type with the seat side open, and each floor plate receptacle forming hardware or rail fastening part forming hardware and plate spring fixing embedding. [1] The insert jig in which the members are combined is fixed so as to be slidable in the longitudinal direction on the open side of the mold.
A method for manufacturing PC sleepers as described in Section 1. [4] For the point part (p), lead part (L), and crossing guard part (c) While the sleeper parts that form the common parts of the PC sleepers are manufactured using fixed molds, the point part (p) and the lead part (c) are manufactured using fixed molds. The non-common parts forming the remaining parts of the PC sleepers for the section (L) and the crossing guard section (c) have a length corresponding to the maximum length of the remaining sleepers, and are attached to at least one end of the mold in the longitudinal direction of the mold. A method for manufacturing a PC sleeper, characterized in that the PC sleeper is manufactured using a variable mold that can be attached to a movable and fixed partition plate frame, and the common sleeper part and the variable sleeper part are connected via a sleeper joint. [5] In the PC sleepers for the crossing guard part (c), the short sleepers with joints are manufactured using the same fixed mold on the guard side, while the short sleepers with joints are manufactured on the guard side using the variable mold mentioned above according to the amount of dimensional change of the crossing part. The method for manufacturing PC sleepers according to item [4] above.