JP3241700B2 - Frontal connection structure of railway vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for strengthening the front (operator cab) of a railway vehicle with respect to a vehicle underframe. Can be strengthened to withstand a collision load to improve the safety of the passenger compartment during a collision.

[0002]

2. Description of the Related Art In recent years, in a conventional railway vehicle for passenger transportation, for the purpose of shortening the manufacturing period, reducing costs, etc., a front (operating cabin) is manufactured separately from a vehicle underframe and a passenger compartment. A method has been adopted in which this is mounted on the tip of the vehicle frame and fixed to the vehicle frame. In this method, the passenger compartment 2 is assembled on the vehicle underframe 3 and manufactured, while the forehead (driver cab) 1 is assembled separately from the passenger compartment 2 and the vehicle underframe 3, and this is assembled with the vehicle underframe 3. The forehead structure 6 of the forehead 1 is fixed to the vehicle underframe 3 through a connection bolt 5 through a bolt hole 4 placed on the front part. The connection strength of the frontal structure 6 to the vehicle underframe 3 is designed to withstand a static load, and there is no particular problem in strength. By the way, in the railway vehicle assembled as described above, there is no particular problem in strength and safety in the normal operation, but when a strong impact force is applied to the frontal head 1 rearward as described above, the frontal head 1 Since the coupling strength to the vehicle underframe is designed on the premise of a static load, the connection bolt 5 may be broken when subjected to the above-described impact force. Although such a situation must be avoided, if the connection strength of the connection bolt 5 between the frontal part 1 and the front part of the vehicle underframe 3 is made to be sufficiently resistant to the above-mentioned impact, the connection bolt It is necessary to increase the number of connection bolts 5 or make the connection bolts 5 thicker. However, if the number of connection bolts 5 is increased or the connection bolts 5 are made thicker, an increase in cost due to an increase in the number of work steps and the like is inevitable. Therefore, the front of the vehicle frame 3 and the frontal 1
It is desired to devise a simple connecting structure that can greatly improve the bonding strength without affecting the strength of the frontal structure.

[0003]

SUMMARY OF THE INVENTION The present invention addresses the above-mentioned problems, and is a simple and easy-to-use connection that can greatly improve the coupling strength without adversely affecting the strength of the vehicle frame 3 and the frontal structure of the frontal part 1. It is an object to devise a structure.

[0004]

Means taken to solve the problem is that the frontal structure is separate from the vehicle underframe and the passenger compartment, and the frontal structure is placed in front of the vehicle underframe and the platform is mounted. Assuming that the railway vehicle is fixed to the frame, the following elements (a)-
(D). (B) providing the vehicle underframe tip pair of U-shaped notch in the, (b) that the lower end of the wife pillars of frontal structure is protruded from the lower surface frontal assembly downwardly, the (c) frontal structure in a state that was placed in front of the vehicle underframe, frontal
The lower end of the main pole of the structure was engaged with the above-mentioned U-shaped notch. (D) The frontal structure was fixed to the vehicle underframe by connecting bolts.

[0005]

[Effects] The frontal head 1 placed in front of the vehicle underframe has a head post 8
Is fixed to the vehicle frame 3 by the engagement between the lower end of the U-shaped notch 10 and the U-shaped notch 10 and the connection between the frontal structure 6 and the vehicle frame 3 by the connection bolts 5. The external force applied to the front end of the frontal head 1 from the front is reduced by the lower end of the end post 8 and the above-mentioned U-shaped notch 10.
Is received by engagement with Therefore, since an impact force due to a collision or the like is not applied to the connection bolt 5,
The connecting bolt 5 is not broken by the impact force. Therefore, it is possible to reduce the possibility that the connection with the vehicle frame 3 is broken at the time of the collision, the frontal head 1 is largely displaced rearward, and the passenger compartment 2 is crushed. Further, it is not necessary for the connecting bolts 5 to share the impact force from the front. Therefore, the connecting bolts 5 need only fix the frontal head 1 to the vehicle frame 3 in the vertical direction, so that the number of connecting bolts is reduced. Can be done.

[0006]

[Embodiment 1] An engaging metal is fixed to the lower end of a stanchion, and this engaging metal is engaged with the lower surface of the front end of the vehicle frame.

[Function] Since the engaging gold at the lower end of the pole is engaged with the lower surface of the front end of the vehicle frame, the forehead is also connected to the vehicle frame downward by the lower end of the pole. This prevents the tip of the frontal head from rising upward on the vehicle underframe and falling backward. Therefore, the load on the connecting bolt is further reduced.

[0007]

Next, an embodiment will be described with reference to FIGS. A pair of left and right U-shaped cutouts 10 are provided at the front end of the vehicle underframe 3, and the lower end of the stud 8 of the frontal head 1 is attached to the lower surface 1 a of the frontal head 1
The projecting portion 8a protrudes downward from the lower end of the bobbin column. The frontal head 1 is placed on the front part 3a of the vehicle underframe 3 in a state where the protruding part 8a of the post 8 is engaged with the U-shaped notch 10,
The frontal structure 6 of the forehead 1 is connected with the connecting bolt 5 as in the prior art.
Is fixed to the front part 3a of the vehicle underframe 3. Since the protruding portion 8a at the lower end of the post 8 is engaged with the U-shaped notch 10, an impact force from the front is received by this engagement. Accordingly, the impact force is not applied to the connecting bolt 5, so that the impact force does not break the connecting bolt 5, and the connecting bolt 5 is harder than the conventional connecting structure.
, The number of connecting bolts can be reduced.

[0008]

As described above, according to the present invention, the lower end of the front pillar is engaged with the above-mentioned U-shaped notch provided at the front end of the vehicle underframe. It functions as a connecting member to the underframe, and its connecting strength is extremely strong, so that it has high resistance to impact from the front. Therefore, the possibility that the frontal head is shifted rearward with respect to the entire vehicle frame due to the impact and the passenger compartment is crushed is reduced. In addition, since the lower end of the main pole functions as a connecting member to the front vehicle frame, the load on the connecting bolt is reduced, and therefore the number of connecting bolts can be reduced.

[Brief description of the drawings]

FIG. 1A is a perspective view of a railway vehicle, and FIG. 1B is a cross-sectional view taken along line EE of a conventional example.

FIG. 2 is a perspective view of the embodiment.

[Explanation of symbols]

 1: front part 1a: lower surface of front part 1 2: cabin section 3: vehicle underframe 3a: front part of vehicle underframe 3 4: bolt hole 5: connecting bolt 6: frontal structure 8: wife pillar 8a: projection of lower end of wife pillar Part 10: U-shaped notch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B61D 17/04 B61C 17/04 B61F 1/10

Claims (2)

(57) [Claims] 1. A frontal structure is a separate member and the vehicle underframe and room unit, in a railway vehicle in which solid <br/> wearing the underframe by placing a frontal structure in front of the vehicle underframe, the vehicle underframe tip provided a pair of right and left U-shaped notch in the lower end of the wife pillars of frontal structure protruding from the lower surface frontal assembly downwardly, the frontal structure in a state placed on the front of the vehicle underframe, wife pillars frontal structure The front end connecting structure of a railway vehicle in which the lower end of the front end is engaged with the U-shaped notch and the frontal structure is fixed to the vehicle underframe by connecting bolts. 2. The frontal connecting structure for a railway vehicle according to claim 1, wherein an engaging metal is fixed to a lower end of said stanchion, and said engaging metal is engaged with a lower surface of a front end of a vehicle underframe.