JP7009030B2 - Railroad vehicle traction device - Google Patents

Description

The present invention relates to a traction device for a railway vehicle, and more particularly to a traction device for a railway vehicle provided with a traction link for connecting a vehicle body of the railway vehicle and a bogie.

In railway vehicles, the vehicle body and the bogie are connected by a well-known Z-link type or single-link type traction device. With such a traction device, it is possible to easily carry out the bogie insertion work even in a place where the pit is not dug, and to move to the line with the pit (internal turning line) before bolting. There is a need for functions that can be performed. Such a function can be easily configured with a Z-link type traction device, but it is structurally difficult with a single-link type traction device, and from the place where the bogie is inserted before bolting to the pit. The premises could not be turned.

Therefore, a detachable adapter is provided on the center pin of the traction device, and the bolt is removed between the center pin and the adapter in advance to cut the edge. A single-link type traction device has been proposed in which the adapter is fixed with bolts after the vehicle is moved to the pit in a state of being simply fixed by the inlay structure of the above (see, for example, Patent Document 1).

On the other hand, in order to improve the efficiency of the fluid piping and electrical wiring connection work that is performed after the bogie loading work, these are provided along one traction link and divided into two together with the traction link in the middle part. A single-link traction device that can be connected to each other via a coupler is known (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 1-237259 Japanese Unexamined Patent Publication No. 11-115756

However, although the split-type tow link described in Patent Document 2 can reduce the connection work of the fluid piping and the electric wiring after the bogie insertion work, it is difficult to satisfy the function that the bogie insertion work can be easily performed. Even if it is applied to the single-link type traction device described in Patent Document 1, there is a problem that the advantage cannot be utilized. In addition, a flexible air hose is used for the fluid piping that crosses between the vehicle body and the bogie, and it is necessary to prevent deterioration of pressure resistance performance and air leakage by connecting with a bending radius with a small load. However, the ones described in Patent Document 1 and Patent Document 2 do not describe any configuration in which fluid piping can be easily connected even in a pit having poor workability.

Therefore, an object of the present invention is to provide a traction device for a railway vehicle capable of easily connecting a vehicle body and a bogie without adversely affecting the performance of fluid piping.

In order to achieve the above object, the traction device of the railroad vehicle of the present invention has a central pin whose upper end is connected to the vehicle body, an adapter detachably attached to the lower end of the central pin, and both ends of the adapter and the carriage frame. In a railroad vehicle traction device equipped with a traction link extending in the front-rear direction of the vehicle body, the adapter has a base attached to the lower end of the center pin and a left-right moving damper coupled to the side surface of the base. The damper mounting portion, the upward fitting pin that is internally fitted into the fitting hole provided at the lower end of the center pin on the upper surface of the base, and the front portion of the traction link are coupled to the front end of the lower surface of the base. A fitting portion flow passage for flowing fluid is provided in the fitting pin, and a lower flow passage communicating with the fitting portion flow passage is provided inside the adapter. A trolley-side connection port to which a trolley-side pipe for circulating the fluid is attached is provided in the lower flow passage on the lower surface of the base, and the fitting pin is fitted in the fitting hole inside the center pin. In this state, an upper flow passage communicating with the fitting portion flow passage is provided, and the upper flow passage is provided with a vehicle body side connection port to which a vehicle body side pipe for circulating the fluid is attached. ..

Further, a sealing member is provided at the inner part of the fitting hole so that the upper end of the fitting pin can come into contact with the upper end of the fitting pin, and the boundary portion with the contact surface is sealed at the upper end of the fitting pin. The bogie side pipe is a flexible hose, and the vehicle body side pipe is a metal pipe.

Further, the adapter has a plurality of the fitting pins, and the lower end portion of the center pin is provided with a plurality of the fitting holes for internally fitting the plurality of fitting pins. It is characterized in that the outer circumference of the upper part is formed in a tapered shape whose diameter decreases toward the tip.

According to the present invention, since the fitting pin is provided with the fitting portion flow passage, the fitting pin is internally fitted into the fitting hole and the center pin and the adapter are simply tightened with bolts via the fitting portion flow passage. It is possible to communicate between the upper flow passage and the lower flow passage, so that the work of inserting the trolley can be easily performed and the work load such as connecting the air hoses individually in the pit can be eliminated. Further, since the recessed portion for fitting the seal member is provided at the upper end of the fitting pin, there is no possibility that the seal member is excessively deformed and damaged when the fitting pin is internally fitted.

It is a side view which shows one form example of the traction device of the railroad vehicle of this invention. Similarly, it is a partial cross-sectional front view of a main part. Similarly, it is explanatory drawing which shows the attachment of the seal member. Similarly, it is explanatory drawing which shows the attachment of an adapter.

1 to 4 show an example of a traction device for a railroad vehicle of the present invention, and the traction device 11 shown in this embodiment is a single-link traction device applied to a bolsterless bogie. As shown in FIGS. 1 and 2, a center pin 13 having an upper end coupled to the lower surface of the vehicle body 12, an adapter 14 detachably attached to the lower end of the center pin 13, and an adapter 14 and a bogie frame 15 at both ends. The bogie frame 15 and the car body 12 are connected to each other via the tow link 16 to maintain the bogie frame 15 and the car body 12 in the front-rear direction. At the same time, it transmits traction force and braking force.

The center pin 13 is fixed to the lower surface of the vehicle body 12 with bolts 17 via a flange 13a provided at the upper end portion, and the lower portion protruding vertically downward is a columnar member having a substantially quadrangular cross section, and the adapter 14 is attached to the four corners of the lower end portion. A female screw hole 13b for detachably attaching with a bolt 18 is provided. Further, fitting holes 13c into which fitting pins 14a projecting from the upper surface of the adapter 14 are internally fitted are provided at two locations in the left-right direction of the vehicle body at the lower end of the center pin 13.

The diameter of the fitting hole 13c and the diameter of the fitting pin 14a have a dimensional tolerance of about a clearance fit where the fitting pin 14a can be inserted and removed, and the fitting pin 14a is located at the back of the fitting hole 13c. A contact surface 13d with which the upper end can come into contact is provided. Further, in the lower part of the center pin 13, an upper flow passage 13e communicating with the fitting portion flow passage 14b provided in the fitting pin 14a is provided in a state where the fitting pin 14a is internally fitted in the fitting hole 13c. There is. Further, the upper flow passage 13e has a bent intermediate portion and leads to a pipe connection port 13g which is a vehicle body side connection port provided on the side wall surface 13f of the center pin 13 in the left-right direction of the vehicle body. In this way, the metal pipe (not shown), which is the vehicle body side piping, is connected to the pipe connection port 13g via the joint member (not shown), so that the air tank mounted on the vehicle body 12 (not shown) is connected. The compressed air is introduced into the upper flow passage 13e through the metal pipe.

As shown in FIGS. 3 and 4, the adapter 14 is a block body having a substantially U-shape in a plan view, and has a base portion 14c attached to the lower end of the center pin 13 with its open side facing the rear of the vehicle body (right side in FIG. 1). A pair of left and right fitting pins 14a, 14a projecting from the upper surface of the base 14c at a position corresponding to the fitting hole 13c, and a bifurcated front portion of the traction link 16 are coupled to both left and right sides of the lower surface of the base 14c. It has a shaped link mounting portion 14d, 14d and a bifurcated damper mounting portion 14e, 14e to which a left-right moving damper (not shown) is coupled to the side surface of the base portion 14c, and corresponds to the female screw hole 13b. A bolt 18 is inserted into the vertical through hole 14f provided at the position so as to be detachably formed at the lower end of the center pin 13. Further, at the front ends of the link mounting portions 14d and 14d, female screw holes 14g and 14g for connecting the front portions of the tow link 16 are provided.

The fitting pin 14a is a protrusion having a circular cross section, has a length corresponding to the inner fitting depth into the fitting hole 13c, and is provided with a fitting portion flow passage 14b penetrating in the axial direction. A tapered surface 14h whose diameter decreases toward the tip is provided on the outer periphery of the upper portion. Further, the upper end portion of the fitting pin 14a is provided with a circular recessed portion 14i into which a sealing member 19 for sealing the boundary portion with the contact surface 13d is fitted.

The base portion 14c is provided with a lower flow passage 14j communicating with the fitting portion flow passage 14b (FIG. 2). Further, the lower flow passage 14j leads to a hose connection port 14k, which is a bogie side connection port provided on the lower surface of the base portion 14c. In this way, the air hose (not shown), which is a trolley-side pipe, is connected to the hose connection port 14k via the joint member (not shown), so that the compressed air introduced into the upper flow passage 13e is fitted. It is introduced into the air hose via the junction flow passage 14b and the lower flow passage 14j, that is, via the flow passage inside the adapter 14, and is supplied to a device provided in the carriage frame 15, for example, a brake device.

The seal member 19 is made of a ring-shaped soft rubber and is formed to have an outer diameter corresponding to the inner diameter of the recessed portion 14i and a thickness such that the surface slightly protrudes in the state of being fitted to the recessed portion 14i. .. When the seal member 19 is fitted into the recessed portion 14i, the fitting pin 14a is internally fitted into the fitting hole 13c, and the center pin 13 and the adapter 14 are tightened with the bolt 18, the upper end of the fitting pin 14a is reached. The contact surface 13d is brought into contact with each other via the seal member 19 and pressure-mounted, and the seal member 19 is brought into close contact with each other by compressive elastic deformation to exert a sealing action.

The traction link 16 has a mandrel 21 and 21 inserted in the left-right direction via rubber bushes 20 and 20 at both ends of the link 16a extending in the front-rear direction, and a link mounting portion 14d straddles the link 16a. Then, both ends of the mandrel 21 on the front side are fixed to the link mounting portion 14d with bolts 22, and both ends of the mandrel 21 on the rear side are fixed to the bifurcated link mounting portions 15a provided on the bogie frame 15 with bolts 22 in the same manner. By doing so, the center pin 13 is connected to the bogie frame 15 via the adapter 14 and the tow link 16 (FIG. 1).

In a railroad vehicle equipped with a traction device 11 configured in this way, at the time of periodic inspection, the bogie 12 is lifted by an overhead crane or the like at a vehicle factory, and the bogie 12 and the bogie frame 15 are separated. After that, the equipment to be inspected is inspected and maintained. Before performing this bogie removal work, the bolt 18 is removed and the edge is cut between the center pin 13 and the adapter 14 in advance, and the portion connecting the vehicle body 12 and the bogie frame 15 of the electric wiring is separated.

After the above-mentioned inspection and maintenance are completed, the dolly will be put in to restore the vehicle. First, in the state of the dolly alone, the air hose is connected to the hose connection port 14k of the adapter 14, and the horizontal levels of the adapter 14 and the traction link 16 are adjusted to such an extent that the dolly insertion work is not hindered.

Subsequently, when the vehicle body 12 lifted by the crane is moved onto the carriage frame 15 and the vehicle body 12 is lowered while finely adjusting the position in the front-rear direction, the lower end of the center pin 13 is close to the adapter 14 and fitted. When the peripheral edge of the opening of the joint hole 13c and the tapered surface 14h of the fitting pin 14a come into contact with each other, the fitting positions match each other, and the fitting pin 14a is internally fitted into the fitting hole 13c. In this way, the inlay structure of the center pin 13 and the adapter 14 allows the bogie insertion work to be easily performed, and the premises can be turned.

After moving the vehicle to the pit by the traction vehicle, the bolt 18 is tightened to connect the center pin 13 and the adapter 14, so that the upper flow passage 13e and the lower flow passage 14j pass through the fitting portion flow passage 14b. To establish the flow of compressed air between the vehicle body 12 and the bogie frame 15. Finally, by connecting the electrical wiring at a predetermined position, a series of bogie insertion work is completed.

In this way, since the fitting pin 14a is provided with the fitting portion flow passage 14b, the fitting pin 14a is internally fitted into the fitting hole 13c, and the center pin 13 and the adapter 14 are simply fitted with the bolt 18. It is possible to communicate between the upper flow passage 13e and the lower flow passage 14j via the joint flow passage 14b, which simplifies the work of inserting the trolley and eliminates the work load of individually connecting the air hoses in the pit. can do.

Further, since the recessed portion 14i into which the seal member 19 is fitted is provided at the upper end portion of the fitting pin 14a, there is no possibility that the seal member 19 is excessively deformed and damaged when the fitting pin 14a is internally fitted. Further, since a flexible hose is used for the bogie side piping, even if the center pin 13 and the bogie frame 15 are relatively displaced, not only can the hose be routed with a certain degree of freedom, but also at the time of replacement. It can be easily attached to and detached from the adapter 14. In addition, since a metal pipe is used for the vehicle body side piping, it is possible to form an air flow passage compactly along the center pin 13, and the pipe is a structure inside the bogie frame 15 during bogie removal and bogie insertion work. There is no risk of damage due to contact with.

Further, since the fitting pins 14a are provided at two locations on the upper surface of the adapter 14, when the compressed air of the air tank is supplied to the equipment provided in the carriage frame 15, it is supplied to a plurality of equipment by another system as needed. This makes it possible to expand the range of applications of this technology. Further, since the upper outer circumference of the fitting pin 14a is formed in a tapered shape whose diameter decreases toward the tip, the alignment between the fitting pin 14a and the fitting hole 13c can be more easily performed.

The present invention is not limited to the above-mentioned embodiment, and the number and shape of the fitting pins may be arbitrary. For example, the center pin and the adapter may be connected by a keyway structure. Further, the fluid supplied to the various devices provided in the bogie frame may be a fluid other than compressed air such as hydraulic oil, and the traction device can be appropriately configured according to conditions such as the function of the bogie.

11 ... traction device, 12 ... vehicle body, 13 ... center pin, 13a ... flange, 13b ... female screw hole, 13c ... fitting hole, 13d ... contact surface, 13e ... upper flow passage, 13f ... side wall, 13g ... pipe connection port , 14 ... Adapter, 14a ... Fitting pin, 14b ... Fitting part flow path, 14c ... Base, 14d ... Link mounting part, 14e ... Damper mounting part, 14f ... Through hole, 14g ... Female screw hole, 14h ... Tapered surface, 14i ... recess, 14j ... lower flow passage, 14k ... hose connection port, 15 ... trolley frame, 15a ... link mounting part, 16 ... tow link, 16a ... link, 17, 18 ... bolt, 19 ... seal member, 20 ... Bush, 21 ... mandrel, 22 ... bolt

Claims (5)

A railroad vehicle equipped with a center pin whose upper end is connected to the vehicle body, an adapter detachably attached to the lower end of the center pin, and a tow link whose both ends are connected to the adapter and the bogie frame and extend in the front-rear direction of the vehicle body. In the traction device of
The adapter
The base attached to the lower end of the center pin and
On the side surface of the base, a damper mounting portion to which a left-right moving damper is coupled and
On the upper surface of the base portion, an upward fitting pin that is internally fitted into the fitting hole provided at the lower end portion of the center pin,
A link attachment portion to which the front portion of the tow link is coupled to the front end of the lower surface of the base portion.
Have,
The fitting pin is provided with a fitting portion flow passage through which fluid flows, a lower flow passage communicating with the fitting portion flow passage is provided inside the adapter, and the fluid is passed through the lower flow passage. A trolley-side connection port to which a trolley-side pipe to be distributed is attached is provided on the lower surface of the base, and the fitting pin is fitted inside the fitting hole inside the center pin, and the fitting portion flow passage is provided. A railroad vehicle traction device, characterized in that an upper flow passage is provided, and the upper flow passage is provided with a vehicle body side connection port to which a vehicle body side pipe for circulating the fluid is attached. A contact surface to which the upper end of the fitting pin can come into contact is provided in the inner part of the fitting hole, and a sealing member for sealing the boundary portion with the contact surface is fitted to the upper end of the fitting pin. The traction device for a railroad vehicle according to claim 1, wherein a recessed portion to be worn is provided. The traction device for a railway vehicle according to claim 1 or 2, wherein the bogie-side pipe is a flexible hose, and the vehicle body-side pipe is a metal pipe. The adapter has a plurality of the fitting pins, and the lower end portion of the center pin is provided with a plurality of the fitting holes for internally fitting the plurality of fitting pins. The traction device for a railway vehicle according to any one of 3. The traction device for a railway vehicle according to any one of claims 1 to 4, wherein the upper outer circumference of the fitting pin is formed in a tapered shape whose diameter decreases toward the tip.

Images