JPS591843B2 - Roadbed compaction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a road bed compaction device for filling and compacting road bed gravel for supporting rails.

Conventionally, this type of bed compaction equipment has a pair of tamping tools arranged at regular intervals in the front and back, and the paired tamping tools are inserted into the road bed gravel so as to sandwich the front and rear sleepers, respectively, and the sleepers are The roadbed gravel in the area and surrounding area was tamped down.

However, since the spacing between the sleepers varies depending on the location, the spacing between the paired tamping tools has been increased or narrowed to match the spacing between the sleepers, so the tightening width for each sleeper is different, making it difficult to tighten the tamping tool. This has the disadvantage that each sleeper is unbalanced, which tends to cause uneven tightening, and the unbalanced tightening can cause the sleepers to move back and forth.

In view of the above-mentioned points, an object of the present invention is to provide a roadbed compaction device that can evenly compact roadbed gravel under a plurality of railroad ties whose intervals are not constant.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows the skeleton of the bed compaction device of the present invention, which has a machine frame consisting of an upper frame 1 and two lower frames 2, which are arranged above and below at intervals. Vibration yokes 3 are provided in the frame at intervals in the running direction of the rail, and are installed facing each other.
3. . . 3 are provided, and these tamping heads include a central tamping head 9, 9 located in the center, and front and rear tamping heads 4, 4, . ...It is classified into 4.

The upper frame 1 is provided with front and rear guide rods 5, 5 for guiding the front and rear tamping heads 4 in the horizontal direction.・・・
- 5 are fixed in parallel to each other, and the above-mentioned front and rear guide rods 5
The front and rear tamping heads 4 are connected to each other from both ends of a support plate 12 that forms part of a support frame (consisting of a support plate 12, a support plate 14, and an arm 15, which will be described later) for supporting the front and rear tamping heads 4. Up and down guide rods 6, 6 for guiding up and down. 6 hangs down so as to straddle the lower frame 2, and sliding bearings 7 are provided at both ends of the support plate 12.
,7. . . 1 are provided, and the vertical guide rod 6 and the front and rear kumping heads 4 are connected to sliding bearings 8, 8 .・・・
- The central tamping head 9 is connected to the upper and lower guide rods io, io, . il, . . . 11.

One end of the support plate 12 is fixed to the upper frame 1,
Hydraulically driven front and rear cylinders 13, 13 for moving the support frame back and forth. ... 13 is attached, and support plates 14, 14 .・
. . 14 hangs directly above the lower frame 2, and is attached to the support plate 14 through arms 15, 15° . 16 .

That is, both tamping heads 4 and 9 are moved up and down by a vertical movement mechanism consisting of up and down cylinders 16 and 17 and up and down guide frames 6 and 10, and the front and rear tamping heads 4 are moved up and down by a front and rear cylinder 13, a support frame, and a front and rear guide rod 5. It moves horizontally by a horizontal movement mechanism consisting of:

FIGS. 2 and 3 specifically show the skeleton shown in FIG. 1, and the front and rear guide rods 5 have mounting plates 20 formed to protrude downward from both sides of the upper frame 1,
20, and the other end is screwed to the upper frame 1.
A central mounting plate 210, which is formed protrudingly at the center of the main body, is screwed to both sides.

The front and rear guide rods 5 form a pair, and the support plate 1 integrally formed on the upper part of the support plate 14 runs over the front and rear guide rods 5.
2 (Fig. 1) slides, and together with the slide bearings 7, the vertical guide rods 6, 6 that extend to the left and right of the support plate 14 move back and forth. .

The vertical guide rod 6 is integrally connected with support arms 22 and 22 that support the damping box 4, and has sliding bearings 8,
8°...8 are slidably fitted together, and the lower end of the vertical guide rod 6 is attached to the lower end of the support plate 14.

Further, a guide plate portion 14b is provided at the lower end of the support plate 14, and a guide plate portion 14b is formed with a notch recess 14a for guiding the support plate 14 along the lower frame 2.
A clamp mechanism 23 for clamping the support plate 14 onto the lower frame 2 is provided on the front surface b, and this clamp mechanism 23 has shafts 23a and 2 that protrude above the guide plate portion 14b.
Left and right clamp levers 23c are rotated by hydraulic cylinders 23b attached to the upper ends of the levers 3ak.
, 23c, and when the lower end of this clamp lever 23c comes into contact with the lower frame 2, the support plate 14 is clamped.

The upper and lower cylinders 16 are located inside the upper part of the support plate 14.
A holding plate 24.24 is attached to hold the damping box, and the lower end of the vertical cylinder 16 whose upper end is free is held at the tip of this holding plate 24, and the damping box is attached to the rod 16a of the vertical cylinder 16. 4 upper plate 4a
, 4a are connected, and the central tamping head 9 moves up and down along vertical guide rods 10, 10 fixed to the upper and lower frames 1, 2. A vertical cylinder 17 whose upper end is fixed to the upper frame 1 is attached to the lug 9b fixed on the plate 9a.
The rods 17a are connected to each other.

The configuration of the tamping heads 4 and 9 will be explained below, taking the central tamping head 9 located in the center as an example.

As shown in FIGS. 4 and 5, a crankshaft 40 is disposed horizontally in the central tamping head 9, and an electric motor 41 is attached to the center of the crankshaft 40.
This electric motor 41 has a rotor 41a formed around a crankshaft 40 and a stator 41b installed opposite to this rotor 41a, and cooling fans 42, 42 are attached to both sides of the rotor 41a.

The crank portions 40a, 40a of the crankshaft 40 protruding from both sides of the electric motor 41 have bearings A, B in order from the electric motor 41 side. C, D, and E are engaged, and the bearings A and E are the upper end bearing portions 3a+3a+...3 of the vibration yokes 3, 3°...3 as shown in FIG. 6, and the bearings A and E are the pins 43°43,...・
Arms 44°45,...44 connected by 43
．． Bearings B, D mounted in arms 46, 47 . ...46,47
A central bearing C is fixed to the casing of the damping box 9.

Note that resin bushings 49 and 50 are provided between the pin 43, the arms 44 and 45, and the upper end bearing portion 3a of the vibration yoke.
is inserted.

A flywheel 4 is provided at both ends of the crankshaft 40.
8.48 is mounted, and this flywheel 48 includes a central boss portion 48a, an outer ring 48b, and a central boss portion 48.
a fin 48c formed between the outer circumferential puffer 48b,
It consists of 48c,...48c.

In addition, the crankshaft 4 of the damping box 9
A sliding bearing 11°11 into which the upper and lower guide rods 10, 10 fit is formed at a symmetrical position with respect to 0.

As shown in FIG. 6, the vibration yoke 3 has an upper end bearing portion 3a attached to the arm 44.45 or 46.47, and two arms 3b extending at intervals from both sides of the upper end bearing portion 3a. , 3b and two identical cylindrical tool receivers 3c integrally formed with the arm 3b,
The base portions 60a, 60a of the tool 60 are inserted and fixed into the tool receiver 3c, and the tip of the tool 60 is provided with scraping plates 60b, 60b, and the two arms Holes 3e, 3e are formed in the hole 3b for inserting the protruding shafts 70a, 70a of the feed nut 10 as shown in FIG.

A vibrating yoke opening/closing mechanism M for opening and closing the vibrating yoke 3 is provided below both the tamping heads 4 and 9.

M, . Drive gear 8 fixed to the shaft of 80
1 is meshed with an intermediate gear 82, and this intermediate gear 82 is fixed to an intermediate shaft 83 that is rotatably provided.
Another small gear 83a is fixed to 3, and this small gear 83a
meshes with a large gear 85 fixed to the center of an operating shaft 84 for opening and closing the vibration yoke 3.

One end of the operating shaft 84 has a left-handed threaded portion 84a, and the other end has a right-handed threaded portion 84b.
are formed, and feed nuts 70, 70 as shown in FIG.
As the feed nuts 70 rotate, the feed nuts 70 move symmetrically with respect to each other, and as the feed nuts 70 move, the vibration yoke 3 opens and closes.

Protruding shafts 70a, 70a that engage with the vibration yoke 3 are formed protrudingly on the left and right sides of the feed nut 70.
The lower ends of levers 86, 86 for preventing the rotation of the nut 70 are attached to one side of a, and the upper end of this lever 86 is slidably engaged with a slide rod 88, and this slide rod 88 is connected to both tamping heads 4. , 9 is fixed to the arm 87°8γ attached to the lower part of the body.

Further, both ends of the operating shaft 840 are rotatably attached to support plates 89, 89.

Next, the effect will be explained.

The main road bed compaction device is attached to the center of a track straightening machine that runs along the rail, and the symbol W in FIG. 2 indicates the rear wheel of the track straightening machine.

First, the track straightening machine is moved to a desired position, the central tamping head 9 located at the center is placed directly above the sleeper located at the center of the three sleepers, and the track straightening machine is stopped.

Thereafter, the front and rear cylinders 13 are operated so that the front and rear tamping heads 4 are located directly above the corresponding sleepers.

When the front and rear tamping heads 4 reach a predetermined position, the operation of the front and rear cylinders 13 is stopped, and the longitudinal pump mechanism 23 is activated, and after fixing the support plate 14 on the lower frame 2, the front and rear tamping heads 4 are moved up and down. During this time, the degree of opening and closing of the tool 60 of the vibration yoke 3 is adjusted in accordance with the spacing between the sleepers.

This adjustment is performed by activating the hydraulic motor 980, rotating the actuator @84 via the drive gear 81, intermediate gear 82, small gear 83a, and large gear 85 attached to the motor shaft. The threaded feed nut 70 can be moved to both ends of the operating shaft 840, or the hydraulic motor 8
This is done by reversing the rotation of the feed nut γ0 and bringing it closer to the center of the operating shaft 84, thereby increasing or decreasing the distance between the pair of vibrating yokes 3.

The electric motor 41, which moves the track straightening machine to a desired position, is operated to rotate the crankshaft 40.

When the crankshaft 40 rotates, the crank portion 40
Arms 44, 45 and 46 degrees 47 attached to a via bearings AE and BD rotate about the pin 43 and cause the pin 43 to reciprocate in the horizontal direction, so that the vibration yoke 3 protrusion shaft 70a of
It vibrates back and forth around the center.

In this way, when the tool 60 is plunged into the trackbed and reaches a predetermined depth, the limit switch detects this and activates the hydraulic motor 80 to bring the vibration yoke 3 close to the sleepers, tightening the gravel on the roadbed and applying gravel to the underside of the sleepers. Fill.

During this time, the vibrating yoke 3 attached to the central tamping head 9 is opened at a predetermined interval, and when the tightening of the tool 60 of the front and rear tamping heads 4 is completed, this is detected by a limit switch, and the upper and lower cylinders are again moved. 1
6 is activated to raise the front and rear tamping heads 4 and lower the central tamping head 9.

When the central vibrating yoke 3 has been tightened as described above, the central tamping head is raised again to return to its original position.

Note that work efficiency can be increased by lowering the center head first and adjusting the front and rear heads while rad tamping to the center.

The vertical movement of the central tamping head 9, the forward and downward movement of both tamping heads 40, and the opening/closing distance of the vibration yoke 3 are all regulated by a limit switch (not shown), and when tamping at a predetermined position is completed, each tamping head 4, 9 is moved to a predetermined position. and then move to the next sleeper.

In general, the pitch of the sleepers is constant, but even when the pitch of the sleepers is irregular or when two sleepers are installed adjacently, such as at a rail joint, this device allows the front and rear cylinders 13
The front and rear tamping heads 4 are moved back and forth to position the center of the front and rear tamping heads 4 directly above the sleepers (in this case, if a front and rear sleeper detector is attached, the positioning can be performed automatically).

) By appropriately adjusting the distance between the vibrating yokes 3 of each tamping head 4, 9, the degree of opening and closing of the vibrating yokes 3 relative to each sleeper will be constant, and the tightening of the sleepers in one direction will become stronger, and the tightness of the sleepers in the opposite direction will be increased. There is no risk of it moving.

After moving the front and rear tamping heads 4 directly above the railroad ties, the hydraulic cylinder 23b of the clamp mechanism 23 provided at the bottom of the support plate 14 is activated, and the clamp lever 23c is activated.
By pressing the lower end of the support plate 14 against the lower frame 2, the support plate 14 is stabilized, and therefore the tool 60 is reliably plunged into the gravel.

Also, during tamping, the bearings AB...E are cooled by the cooling fan 42 attached to the electric motor 41 and the fins 48c formed in the flywheel, so the life of the bearings is significantly extended, and the arms 44, 45
．． ... 47 and a non-metallic bushing 49, for example, a resin bushing, between the upper end bearing portion 3a of the vibration yoke 3 and the pin 43.
．． 50 is inserted, so there is less noise.

Furthermore, both tamping heads 4 and 9 and the upper and lower guide rods 6
, 10 are connected by bearings 8, 11, and the front and rear tamping heads 4 are guided on the front and rear guide rods 5 via bearings γ. Since the mounting method is rotational, no excessive force is applied to the bearing or guide rod.

As explained above, the present invention provides a plurality of tamping heads in the machine frame at intervals in the running direction of the rail, and the central tamping head located in the center has only a vertical movement mechanism; On the other hand, the front and rear tamping heads have both a vertical movement mechanism and a horizontal movement mechanism, and in particular, each tamping head uses a crankshaft mechanism that extends between the left and right sides to apply vibration to the yoke, so the left and right vibration yokes are vibrated at the same time. Not only does this make the 1M process easier and more reliable, but even when tamping multiple sleepers at the same time, the tightening width of the vibrating yoke tool for each sleeper can be the same from front to back, which prevents uneven tamping. This has the effect that there is no risk of moving the sleepers back and forth.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the skeleton of this device, Fig. 2 is a side view of this device, Fig. 3 is a front view showing a part of this device, Fig. 4 is an explanatory diagram of the skeleton of the central tamping head, 5
6 is a front view of the vibrating yoke, FIG. 7 is a perspective view of the feed nut, and FIG. 8 is a perspective view of the vibrating yoke opening/closing mechanism. 1... Upper frame, 2... Lower frame, 3...
・Vibration yoke, 4...Front and rear tamping heads, 5...
・Front and rear guide rods, 6, 10...Upper and bottom guide rods, 9
... Central tamping head, 13 ... Front and rear cylinder, 16.17 ... Up and down cylinder, 23 ... Clamp mechanism, 40 ... Crankshaft, 42 ... Cooling fan, 84 ... Actuation axis.

Claims (1)

[Claims] 1. Provided at intervals in the running direction of the rail,
It has a plurality of tamping heads equipped with a vibrating yoke, and among these plurality of tamping heads, the central tamping head located in the center moves up and down by a vertical movement mechanism, and the front and rear tamping heads are located in front and behind the central tamping head. is moved toward and away from the central tamping head by a horizontal movement mechanism, and is also moved up and down by a vertical movement mechanism. The horizontal movement mechanism for the front and rear tamping heads consists of a vertical guide member fixed to the machine frame for guiding the head up and down, and the horizontal movement mechanism for the front and rear tamping heads includes a support frame for movably supporting the front and rear tamping heads, and a support frame for movably supporting the front and rear tamping heads. Hydraulically driven front and rear cylinders are attached to the machine frame to move the support frame toward and away from the central tamping head, and are fixed to the machine frame horizontally with respect to the running direction of the rail to guide the support frame in the horizontal direction. The vertical movement mechanism for the front and rear tamping heads is supported by the support frame and includes a hydraulically driven vertical cylinder for vertically moving the front and rear tamping heads, and a horizontal guide member attached to the support frame to swing the front and rear tamping heads. The central and front and rear tamping heads are composed of a crankshaft that drives one rotation between the left and right tamping heads in order to give vibration to the vibrating yoke that faces each other. It has an arm that connects the crankshaft and the upper end of the vibration yoke, and an opening/closing mechanism for opening and closing the vibration yoke. A bed compaction device comprising a shaft and a feed nut screwed into both of the threaded portions and connected to the vibrating yoke. 2. Provided at intervals in the running direction of the rail,
It has a plurality of tamping heads equipped with a vibrating yoke, and among these plurality of tamping heads, the central tamping head located in the center moves up and down by a vertical movement mechanism, and the front and rear tamping heads are located in front and behind the central tamping head. is moved toward and away from the central tamping head by a horizontal movement mechanism, and is also moved up and down by a vertical movement mechanism. The horizontal movement mechanism for the front and rear tamping heads is composed of a vertical guide member fixed to the machine frame to guide the head up and down, and the horizontal movement mechanism for the front and rear tamping heads is attached to a support frame and the machine frame for movably supporting the front and rear tamping heads. and hydraulic and driving front and rear cylinders for moving the support frame toward and away from the central tamping head: fixed to the machine frame horizontally with respect to the running direction of the rail and guiding the support frame in the horizontal direction. The vertical movement mechanism for the front and rear tamping heads is supported by the support frame and includes a hydraulically driven vertical cylinder for vertically moving the front and rear tamping heads, and a vertical guide member attached to the support frame to move the front and rear tamping heads up and down. The center and front and rear tamping heads consist of a vertical guide member for guiding the tamping heads up and down, and a crankshaft that rotates between the left and right tamping heads and a crankshaft that rotates between the left and right tamping heads in order to give vibration to the vibration yokes that face each other. The arm that connects the upper end of the vibration yoke and the opening/closing mechanism for opening and closing the vibration yoke are rotated by a hydraulic motor and are screwed into the operating shaft formed with a right-hand thread and a left-hand thread, and the side thread. The machine frame has an upper frame and a lower frame, and a clamp is provided at the lower part of the support frame for clamping the support frame to the lower frame. A road bed compaction device characterized by being provided with a mechanism.