JP3363337B2 - Tamping equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tamping device for tampering gravel sown on the surface of a rail roadbed by entering under the sleepers on both inside and outside of the rail.

[0002]

2. Description of the Related Art Railroad rails have a cushioning effect by laying gravel (ballast) on the roadbed below the railroad rail to remove the sway of a train or the like to improve ride comfort and to reduce damage to the rail and vehicle. Although the speed is being increased, as the above-mentioned gravel roadbed becomes old, its cushioning action decreases, so that the gravel of the roadbed is regularly replaced and replenished. At that time, since the initial gravel sown on the rail bed surface does not enter the lower part of the sleeper and is loosened, it is necessary to carry out tamping work by inserting it into the lower part of the sleeper from both inside and outside of the rail and tamping it. In the above tamping work, mechanical work by a maintenance machine called a multiple tie tamper was performed from the early days of manual work with a pickaxe to the present, in order to improve safety, work efficiency, etc., and reduce costs and labor. Now, an example of the tamping construction method will be described below with reference to FIGS. 7 to 13. First, FIG. 7A shows an example of a tamping vehicle (rail track maintenance machine) (C) traveling on a rail (R), and a tamping unit (1) is provided below the frame.
Is mounted and moves on the rail (R).

The tamping unit (1) is shown in FIG.
As shown in (b), the tamping jigs (2) for tamping work sandwich each sleeper (T) and the rail (R).
Two rows each on the inside and outside of one side, so there are usually eight rails (R) on one side of each sleeper (T), one on each side.
16 pieces are provided so that they can be inserted into the gravel roadbed. Further, the tamping jig (2) has a length (Lo) as shown in FIG.
Attach two tamping tools (3) (3) with a diameter of about 420-425 mm to the leg of the support arm (4).
One that is held, and is paired substantially parallel to each other with the sleeper (T) interposed therebetween as described above. In addition, in the unit example shown in FIG. 9, a pair of ones are arranged in two rows, and a two-clamp double structure in which two adjacent sleepers (Ta) (Tb) are tamped at once is shown. There is also a one-push single structure arranged in a row. Then, the entire unit is lowered and the tamping tool (3) is inserted below the sleepers (Ta) (Tb) of the gravel roadbed, for example, until the lower end surface of the tool reaches a depth of about 80 mm from the lower surface of the sleepers. At the same time, the tamping tool (3) is vibrated by the motor (M) through the first cylinder part (6), and the first cylinder part (6) is expanded and contracted so that the sleeper (Ta) is continuously centered around the shaft (5). (T
It is rocked and closed with respect to b), and is tamped by holding the gravel between the tool tips under the sleepers (Ta) (Tb) by the opposing tamping tool (3). The entire tamping unit (1) is vertically moved up and down together with the chassis by the lifting cylinder (8).

As shown in FIG. 10, the opening / closing mechanism of the tamping tool (3) has the upper end portion (4a) of the support arm (4) at the tip of the first rod (6a) of the first cylinder portion (6). The support arm (4) is reciprocally pivoted about a shaft (5) shown in FIG. 9 as a fulcrum by projecting and retracting the first rod (6a). Then, the first rod (6
The tip of the tamping tool (3) is opened by the withdrawal of (a) and closed by the protrusion of the first rod (6a), and the opening amount of the tip of the tamping tool (3) is maximized at the time of maximum withdrawal.

Next, as shown in FIG. 10, the opening adjusting mechanism between the tips of the tamping tool has a limit block (9) at the intermediate portion (Pa) of the tip of the cylinder (6b) of the first cylinder portion (6). It is rotatably supported by a fixed support body (10) in the vicinity of the second rod (7) of the second cylinder portion (7) at the upper end portion (Pb).
It is swingably connected to the tip of a). As shown in FIG. 12, the limit block (9) has a pair of position regulating plates (9a) and (9b), which are integrally formed with rectangular plates (9aa) and (9ba) having a horizontal width (Wa) at the bottom, and face each other in parallel. It is arranged and connected integrally by the connecting rod (9c) and the connecting plate (9d).

Then, as shown in FIG. 11 (a), when the limit block (9) is rotated by projecting the second rod (7a), the rectangular plates below the position regulating plates (9a) and (9b). (9a
a) (9ba) is the first as shown in FIG. 11 (b) and FIG.
When the rod (6a) is sandwiched and the limit block (9) is further rotated, the cylinder (6) of the first cylinder part (6) is
Contact the tip of b). When the support rod (4) is opened by retracting the first rod (6a), the upper end (4a) of the support arm (4) abuts the limit block (9) during the retreat and the tamping tool (4) The opening amount of the tip of 3) is restricted, and the maximum opening amount is narrowed by the block width (Wa) as compared with the case where the limit block (9) is not provided.
Thereby, the opening degree of the tip of the tamping tool (3) is adjusted.

[0007]

The problem to be solved is that in the case of a high-speed running rail such as a Shinkansen which is formed by abutting and connecting rail end surfaces that are obliquely formed when viewed from above with respect to the running direction, such as a sleeper. The arrangement interval of (T) is about 600 to 700 mm in the part other than the rail joint, while it is about 400 to 500 mm in the joint part, which is locally different. For example, the tamping treatment used in the part other than the rail joint is Ingredient (2)
If the rail joint is used, the tamping tool (3) spreads too much when the tamping tool (3) opens when the opening is adjusted with the limit block (9), and it collides with the next sleeper (T) and tampers with it. Because there are things I can not do,
The point is that one tamping jig (2) cannot be used in all sections.

Therefore, an object of the present invention is to provide a tamping device which can be used in the entire section by further narrowing the maximum opening amount of the tamping tool.

[0009]

SUMMARY OF THE INVENTION The present invention provides a tamping jig in which a tamping tool is attached to and held by a leg portion of a support arm that is pivotally supported at a predetermined position of a tamping unit body in a vertical plane. A first cylinder portion having a first rod at the tip end, to which the upper end portion of the support arm is swingably coupled, and which opens and closes the support arm with its pivotal support portion as a fulcrum when the first rod protrudes and retracts; Position regulating plates are parallelly spaced apart from each other and are connected and integrated, and a limit block pivotally supported on the tip of the first cylinder portion and a top end portion of the limit block are pivotally supported on the tip end of the first cylinder portion. It has a second rod that is swingably connected, and the position regulating plate is rotated by the protrusion of the second rod to surround the first rod, and is supported when the tip of the tamping tool is opened by retracting the first rod. It has a second cylinder part that controls the opening amount of the tip of the tamping tool by locking the upper end of the system with the limit block during the retreat, and moves the unit body up and down and swings the support arm to open and close the rail track surface. In the tamping device for tamping the gravel sewn on both inside and outside of the rail to enter under the sleepers and staking it, a limit extension block in which a pair of position control plates of a predetermined shape are arranged in parallel and spaced apart from each other is connected and integrated. It is detachably attached to the first rod and the opening amount of the tip of the tamping tool when the two rods are not used
The feature is that the limit block is used in three stages depending on whether it is used or both blocks are used.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a tamping device according to the present invention will be described below with reference to FIGS. First, in FIGS. 1A and 1B, the same parts as those shown in FIG. 10 are designated by the same reference numerals, and the description thereof will be omitted. The difference is that, as shown in FIGS. 1 (a) and 1 (b), the limit extension block (12) is detachably attached to the limit block (11) by one-touch operation. The opening amount of the tip of the tamping tool (3) is made different between when the tamping tool is installed and when it is not installed. As a result, the opening amount of the tip of the tamping tool (3) is adjusted to both blocks (11) (12).
It can be changed in 3 stages, when the block is not used, when only the limit block (11) is used, and when both blocks (11) and (12) are used. Then, the opening amount is regulated so that the tip of the tamping tool (3) does not open more than a predetermined angle during tamping when the sleepers are arranged at narrow intervals on the same rail.

The limit extension block (12) is shown in FIG.
As shown in, a pair of lower width (Wb) position regulating plates (13)
(14) are spaced apart in parallel and the cross section L is formed on each of the upper end face and the front end face.
The L-shaped positioning plates (16) (16) are welded to the outer surface of the intermediate portion of each position regulating plate (13) (14) by connecting the L-shaped connecting plates (15) in a bridging manner. It is fixed with. Further, a through hole (13a) is bored in the lateral direction in the upper part of the one position regulating plate (13), and the positioning pin (17) is inserted therethrough.

The positioning pin (17) is shown in FIGS.
As shown in Fig. 5, the cylinder (18) is provided with a push pin (19), the cylinder (18) is provided with a screw on the outer peripheral surface (18a), and the flange (18b) is provided at the outer end. It is integrally formed and has a compression spring (20) built therein. After inserting the tubular body (18) into the through hole (13a), the position regulating plate (1
The nut (21) is screwed onto the outer peripheral surface (18a) from the inside of (3) to fix the tubular body (18) to the position regulating plate (13) laterally.
Further, the push-in pin (19) integrally connects the knob (19b) to the pin portion (19a) penetrating the tubular body (18), and the tubular body (18) is provided near the tip of the pin portion (19a). The flange (19c) that slidably contacts the inner surface of the
Both ends of the compression spring (20) are pressed into contact with the flange portion (18b) and the flange portion (19c) of the push pin (19),
The pin portion (19a) is loosely inserted in the compression spring (20).

On the other hand, as shown in FIG. 4, the limit block (11) according to the present invention includes a positioning member (22) and a pedestal on a connecting plate (9d) and square plates (9aa) (9ba) of an existing limit block, respectively. The members (23) (23) are fixed by welding. The positioning member (22) has a positioning hole (22a) formed in the lateral direction, and as shown in FIG. 3, the tip end (19d) of the push pin (19) is fitted into the positioning hole (22a). Limit extension blocks (12), as described below
Is positioned. The base member (23) is shown in FIG.
As shown in (b), L of the limit extension block (12)
The character-shaped positioning pieces (16) (16) are hooked to temporarily fix the limit extension block (12). When modifying an existing tamping device as in the present invention, the positioning member (22) and the pedestal member (2) are preliminarily mounted on the limit block (11) with the limit extension block (12) in advance.
3) Weld and fix (23).

The operation of the present invention based on the above configuration will be described below. First, as shown in FIG. 1 (a), as in the conventional case, the second cylinder (7) has the second rod (7a) retracted and the limit block (11) lifted, so that the first cylinder part (6). When the first rod (6a) is retracted and protruded, the opening amount of the tip of the tamping tool becomes maximum. Next, when performing tamping work on a portion other than the rail joint,
When the limit extension block (12) is removed from the limit block (11), the second rod (7a) is projected, and the limit block (11) surrounds the first rod (6a), as shown in Fig. The opening angle of the tip of the tamping tool (3) is slightly narrowed by the block width (Wa) in accordance with the sleeper interval of the part.

Next, when the tip of the tamping tool (3) is further narrowed in accordance with the sleeper interval at the rail joint part,
As shown in FIGS. 1 (a) and 1 (b), when the limit extension block (12) is mounted on the limit block (11), the opening amount of the tip of the tamping tool is equal to the block width (Wa + Wb),
Further narrowed. Install the limit extension block (12) by pulling the knob (19b) and retracting the tip end (19d) of the push-in pin (19) in advance until it fits inside the tubular body (18). Positioning piece (16)
Place (16) on the base members (23) (23). Then, FIG.
As shown in, the knob (19b) is released and the push-in pin (19) is pushed out by the force of the compression spring (20), and its tip (19d) is positioned on the positioning member (2) of the limit block (11).
Fit in the positioning hole (22a) in 2). Then,
The limit extension block (12) can be attached to the limit block (11) with a simple one-touch operation by placing the limit extension block (12) and releasing the knob (19b).

On the other hand, in order to increase the opening angle of the tamping tool (3), when the limit expansion block (12) is removed from the limit block (11), the knob (19b) is pulled a little and the tip of the push-in pin (19) is pulled. Positioning hole (22d) (22d)
Limit extension block (1
2) can be easily removed.

Not only the limit extension block (12) according to the present invention, but also a block member which comes into direct contact with the support arm (4) to regulate the position may be detachably arranged at a predetermined position with one touch. .

[0018]

According to the present invention, the gravel sown on the rail track surface is tamped by the opening and closing swing of the tamping jig, which is attached to and held by the support arm, by tamping the inside and outside of the rail. In a tamping device that inserts into and tampers with, a limit extension block that locks the tamping tool at a predetermined position when the tip of the tamping tool is opened is detachably arranged on the limit block, and the tamping tool tip has a predetermined angle when performing a predetermined tamping operation. Since the position is regulated so as not to open above, tamping can be performed immediately by mounting the limit extension block even if the arrangement intervals of the sleepers are different, and the workability is improved.

[Brief description of drawings]

1A and 1B are side views of a limit block and a limit extension block showing an embodiment of a tamping device according to the present invention.

[Fig.2] Perspective view of limit expansion block

[Fig. 3] Partial sectional side view showing a positioning state when the limit extension block is mounted.

FIG. 4 is a perspective view of a limit block.

FIG. 5 (a) is a side view of the limit block and the limit extension block before they are mounted, and FIG. 5 (b) is a side view of the limit block and the limit extension block after they are mounted.

FIG. 6 is a front view of a limit block.

FIG. 7A is a side view showing an example of a tamping vehicle, and FIG. 7B is a plan view showing an arrangement example of a tamping jig of a conventional tamping unit.

FIG. 8 is a front view showing an example of a tamping jig.

FIG. 9 is a front view showing an example of a conventional tamping unit.

FIG. 10 is a side view of a main part showing a conventional limit block.

11A is a side view of a main part showing an operation example of a conventional limit block, and FIG. 11B is a cross-sectional view taken along the line AA of FIG. 11A.

FIG. 12 is a perspective view showing a conventional limit block.

[Fig. 13] Front view of a conventional limit block

[Explanation of symbols]

4a Top of tamping jig 6 1st cylinder part 6a First rod 7 2nd cylinder part 7a Second rod 11 limit block 12 Limit expansion block 22 Positioning member 23 Pedestal member

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E01B 27/12-27/20

Claims (2)

(57) [Claims] 1. A tamping jig in which a tamping tool is attached and held to a leg portion of a support arm that is pivotally supported at a predetermined position of a tamping unit body in a vertical plane.
A first cylinder portion having a first rod at the tip end, to which the upper end portion of the support arm is swingably coupled, and which opens and closes the support arm with its pivotal support portion as a fulcrum when the first rod protrudes and retracts; Position regulating plates are parallelly spaced apart from each other and are connected and integrated, and a limit block pivotally supported on the tip of the first cylinder portion and a top end portion of the limit block are pivotally supported on the tip end of the first cylinder portion. Second swingably connected
The rod has a rod, and the second rod protrudes to rotate the position regulating plate to surround the first rod. When the tip of the tamping tool is opened by retracting the first rod, the upper end of the support arm is retracted by the limit block. It is equipped with a second cylinder part that locks at the tip of the tamping tool to regulate the opening amount of the tip of the tamping tool, and the gravel sown on the rail bed surface by the up-and-down movement of the unit body and the opening and closing swing of the support arm is tamped on both inside and outside of the rail. In the tamping device that pushes into the lower part of the sleeper and tampers with it, a limit extension block in which a pair of position regulating plates of a predetermined shape are spaced apart in parallel and connected and integrated is detachably attached to the limit block, and the first rod is attached. The opening amount of the tip of the tamping tool when retreating is not used when both blocks are not used, when only the limit block is used, and when both blocks are used. A tamping device characterized in that it can be changed in three stages depending on the time of use. 2. A limit member is additionally fixed to a predetermined position of a limit block, and a limit extension block is detachably attached to the limit block by the positioning member and the pedestal member. Tamping device.