CN216836727U

CN216836727U - Technology lower end beam for railway freight car

Info

Publication number: CN216836727U
Application number: CN202123430404.9U
Authority: CN
Inventors: 隋国宏; 李宏伟; 周正权; 王博; 刘士博; 李超
Original assignee: CRRC Dalian Daqi Rolling Stock Co Ltd
Current assignee: Dalian Crrc Daqi Container Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-28
Anticipated expiration: 2031-12-30

Abstract

A technology lower end beam for a railway wagon mainly comprises: frame crossbeam, hold-down arm mechanism, longitudinal beam location supporting mechanism and lifting hook. Two pressing arm mechanisms with the spacing matched with the width of the lower wing surface of the end part area of the traction beam or the middle beam are arranged in the middle of the frame cross beam, one pair or two pairs of longitudinal beam positioning and supporting mechanisms are arranged on two sides of the pressing arm mechanism on the frame cross beam according to a vehicle body structure, and a lifting hook fixed on the frame cross beam is arranged on the frame cross beam. The utility model discloses can effectively control the vertical roof beam of chassis, bottom plate tip assembly welding deformation in chassis manufacturing process, avoid the chassis to weld the back and correct and cause structural strength to descend and follow-up automobile body equipment difficulty, improve whole car product quality, reduce the cost of labor to improve economic benefits.

Description

Technology lower end beam for railway freight car

Technical Field

The utility model relates to a machine-building field especially is applied to the frock that the chassis assembly welding of control does not have lower end beam structure warp in the railway freight car manufacturing process.

Background

The development trend that high-speed heavy load becomes ore gondola car, in order to improve the automobile body load, reduce the automobile body dead weight, more and more heavy axle load gondola cars have adopted the end wall to wholly bear, have cancelled the lower end beam among the chassis group welding process, and this has just caused that in chassis assembly welding process, chassis tip does not have supporting beam spare, and vertical roof beam and floor tip assembly welding in-process warp great, cause the automobile body to assemble with end wall, side wall during the time of the equipment unable equipment. In the conventional production process, a jacking tool is usually used for local support or mechanical and flame straightening after deformation. The defects of the prior art are as follows:

1) the jacking tool support can only be used at a single station and a forward station, the operation is complicated, the failure can be caused by improper operation, and the fixing effect cannot be achieved;

2) aiming at deformed mechanical or flame correction, the strength of the whole vehicle is easy to reduce, and local welding seams are easy to crack, so that potential safety hazards are brought to long-term application of the vehicle;

3) no matter the station is additionally supported or the deformation is corrected, the manual quota is increased, and the control of the manufacturing cost of the whole vehicle is not facilitated.

Disclosure of Invention

An object of the utility model is to provide a railway freight car is with technology lower extreme roof beam that can effective control chassis vertical roof beam, bottom plate tip equipment welding deformation and loading and unloading are convenient, can follow in the chassis manufacturing process.

The utility model discloses mainly including: frame crossbeam, hold-down arm mechanism, longitudinal beam location supporting mechanism and lifting hook. Wherein, frame beam is the shaped steel of square for the cross-section, is equipped with the hold-down arm mechanism that two intervals and traction beam (or well roof beam tip region) lower flange width match at frame beam middle part, and two hold-down arm mechanisms use the frame beam center as the symmetry best for fix the frame beam to the traction beam (or well roof beam tip region) lower flange, so that make the utility model discloses can be along with the bridge crane operation. The pressing arm mechanism further comprises: the base compresses tightly arm, screw rod, fixed pin, removable pin and nut. The base is a Pi-shaped groove steel section formed by vertically connecting the lower ends of two parallel side walls with a bottom plate, two through holes with circle centers connected in parallel with the bottom plate are respectively arranged on the two side walls of the base, which are connected with the frame beam, and each pair of through holes with the opposite side walls has the same diameter and the opposite circle centers. A flat plate type pressing arm parallel to the two side plates is arranged between the two side plates, two through holes corresponding to the two side walls of the base are formed in the pressing arm, one end of the pressing arm is in a circular arc shape, preferably, the end top is positioned in the two side walls, the other end of the pressing arm extends out of the two side walls, and the end part of the pressing arm is connected with the peripheral wall of the nut. The through hole of the pressing arm adjacent to the arc end edge is internally provided with a fixed pin which passes through the through hole and corresponds to the through hole on the two side walls of the base, the other through hole of the pressing arm is internally provided with a movable pin which passes through the through hole and corresponds to the through hole on the two side walls of the base, a screw rod which is meshed with the nut is arranged in the nut which is connected with the pressing arm, one end of the nut which faces the base bottom plate is provided with a nut, the other end of the nut is provided with a rotating handle, and a wrench hole is arranged on the rotating handle.

And one pair or two pairs of longitudinal beam positioning and supporting mechanisms for adjusting the height of the longitudinal beam set are arranged on two sides of the pressing arm mechanism on the frame cross beam according to the structure of the vehicle body, and the longitudinal beam positioning and supporting mechanisms mainly comprise upright posts, fixing plate supports and screws. The upright column is square tube type steel, an opening at the lower end of the upright column is fixed on a frame cross beam, a fixing plate with a groove-shaped notch is arranged on one vertical surface of the upright column, the upright column and the fixing plate are connected in a welding mode, a support with one end vertically fixed on the support is arranged on the surface of the upright column opposite to the fixing plate, a screw hole with the central line parallel to the upright column is arranged at the free end of the support, a screw rod meshed with the screw rod is arranged in the screw hole, a nut is arranged at one end of the screw rod, a rotating handle is arranged at the other end of the screw rod, and a wrench hole is arranged on the screw rod.

The frame beam is provided with a lifting hook fixed on the frame beam, so that the hoisting, loading and unloading of the steel wire rope can be realized.

Compared with the prior art, the utility model has the following advantage:

1) the overturning clamping mechanism is connected, and the assembling and disassembling operation is simple and convenient.

2) The structure is stable, and the positioning and rigid fixation of the end part structure of the underframe can be realized.

3) The vehicle-mounted operation realizes multi-process control, and the whole process control of the assembly welding of the underframe can be realized by one-time assembly and disassembly. 4) The end parts of the longitudinal beam and the bottom plate of the underframe can be effectively controlled to be assembled and welded to deform in the manufacturing process of the underframe, the structural strength reduction and the subsequent difficulty in assembling the car body caused by the correction after the welding of the underframe are avoided, the product quality of the whole car is improved, the labor cost is reduced, and therefore the economic benefit is improved.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic plan view of the present invention.

Fig. 3 is a schematic sketch of the front view of the frame beam of the present invention.

Fig. 4 is a schematic diagram of the left side view of the frame beam of the present invention.

Fig. 5 is a schematic sketch of the front view of the pressing arm mechanism of the present invention.

Fig. 6 is a schematic plan view of the pressing arm mechanism of the present invention.

Fig. 7 is a schematic sketch of the front view of the vertical beam positioning and supporting mechanism of the present invention.

Fig. 8 is a schematic sketch view of the left side view of the vertical beam positioning and supporting mechanism of the present invention.

Fig. 9 is a schematic sketch of the front view of the hook of the present invention.

Fig. 10 is a schematic diagram of a left side view of the hook of the present invention.

Fig. 11 is a schematic plan view of the present invention.

Fig. 12 is a schematic sketch of the front view of the usage state of the present invention.

In the figure: 1. frame crossbeam, 2, hold-down arm mechanism, 2.1 base, 2.2 hold-down arm, 2.3 screw rods, 2.4 fixed pins, 2.5 loose pins, 2.6 nuts, 3, vertical roof beam location supporting mechanism, 3.1 stand, 3.2 fixed plates, 3.3 supports, 3.4 screw rods, 4, lifting hook, 5, draw beam, 6, vertical roof beam, 7, chassis.

Detailed Description

In the schematic diagram of the process lower end beam for the railway wagon shown in fig. 1 and 2, the utility model mainly comprises: frame crossbeam 1, pressure arm mechanism 2, longitudinal beam location supporting mechanism 3 and lifting hook 4. In the schematic diagram of the frame beam of the present invention shown in fig. 3 and 4, the frame beam is a section steel with a square cross section, two pressing arm mechanisms are arranged in the middle of the frame beam, the pressing arm mechanisms are matched with the width of the lower wing surface of the towing beam (or the end area of the middle beam) by taking the center of the frame beam as the symmetrical distance, as shown in fig. 5 and 6, wherein the base 2.1 is a pi-shaped channel steel section formed by vertically connecting the lower ends of two parallel side walls with a bottom plate, two through holes with parallel circle centers are respectively arranged on the two side walls of the base connected with the frame beam, and each pair of the two side walls is opposite to each other, and the diameter of each through hole is the same and the circle centers are opposite. A flat plate type pressing arm 2.2 parallel to the two side plates is arranged between the two side plates, two through holes corresponding to the two side walls of the base are arranged on the pressing arm, one end of the pressing arm is in the shape of a circular arc and is supported in the two side walls, the other end of the pressing arm extends out of the two side walls, and the end part of the pressing arm is connected with the peripheral wall of the nut 2.6. The through hole of the pressing arm adjacent to the arc end edge is internally provided with a fixed pin 2.4 which passes through the through hole and corresponds to the through hole on the two side walls of the base, the other through hole of the pressing arm is internally provided with a movable pin 2.5 which passes through the through hole and corresponds to the through hole on the two side walls of the base, a screw rod 2.3 which is meshed with the nut is arranged in the nut which is connected with the pressing arm, one end of the nut which faces the base bottom plate is provided with a nut, the other end of the nut is provided with a rotating handle, and a wrench hole is arranged on the nut. In fig. 7 and fig. 8 show the utility model discloses in vertical roof beam location supporting mechanism schematic sketch, stand 3.1 is square tubular shaped steel, the lower extreme opening is fixed in on the frame crossbeam, be equipped with the fixed plate 3.2 of taking the flute profile breach above one of which vertical face, both link to each other through welding mode, be equipped with one end vertical fixation in support 3.3 above that on the stand with establish the relative face of fixed plate, the free end of support is equipped with the screw that the central line is parallel with the stand, be equipped with in the screw rather than meshed screw rod 3.4, screw rod one end is equipped with the nut, the other end is equipped with the swing handle, be equipped with the wrench hole on it. The frame cross-member is provided with hooks 4 secured thereto as shown in figures 9 and 10.

The utility model discloses a concrete working process as follows: in the assembling and welding process of the steel structure underframe 7 of a certain ore gondola car, as shown in fig. 11 and fig. 12, an operator uses a steel wire rope to hang and sleeve on the lifting hook 4 of the utility model, the utility model is sleeved under the traction beam 5 from the lower part of the end part of the underframe by using a bridge crane, then the utility model is fixedly clamped with the lower flange of the traction beam by using a pressing arm mechanism, and the steel wire rope used for hoisting is dismounted; assembling the longitudinal beam 6 at the end part of the underframe, and positioning and fixing the outer end of the longitudinal beam 6 by using the longitudinal beam positioning and supporting mechanism 3; assembling and welding other parts such as the bottom plate of the underframe, and the like, wherein the welding comprises the integral front welding and the turnover welding of the underframe; after the assembly welding of the underframe is completed, an operator uses a steel wire rope to hang and sleeve the hoisting hook of the frame beam 1, then loosens the pressing arm, and uses a bridge crane to hoist and place the frame beam on the tool storage rack from the end part of the underframe.

Claims

1. The utility model provides a railway freight car is with technology lower extreme roof beam which characterized in that: it comprises the following components: the frame beam is section steel with a square section, two pressing arm mechanisms with the space matched with the width of the bottom flange of the traction beam or the middle beam are arranged in the middle of the frame beam, the base of each pressing arm mechanism is a pi-shaped groove steel section formed by vertically connecting the lower ends of two parallel side walls with a bottom plate, two through holes with the circle centers connected in parallel with the bottom plate are respectively arranged on the two side walls of the base connected with the frame beam, each pair of through holes opposite to the two side walls has the same diameter and opposite circle centers, a flat pressing arm parallel to the two side plates is arranged between the two side plates, two through holes corresponding to the two side walls of the base are arranged on the pressing arm, one end edge of the pressing arm is arc-shaped, the other end of the pressing arm extends out of the two side walls, the end part of the pressing arm is connected with the peripheral wall of a nut, a fixing pin penetrating through the pressing arm and the through hole on the two side walls of the base corresponding to the pressing arm are arranged in the through hole adjacent to the arc-shaped end edge of the pressing arm, a movable pin penetrating through the movable pin and through holes on two side walls of the base corresponding to the movable pin is arranged in the other through hole of the pressing arm, a screw rod meshed with the movable pin is arranged in a nut connected with the pressing arm, a nut is arranged at one end of the nut facing a base bottom plate, a rotating handle is arranged at the other end of the nut, and a wrench hole is formed in the rotating handle; the two sides of a pressing arm mechanism on a frame cross beam are provided with one pair or two pairs of longitudinal beam positioning and supporting mechanisms, wherein the stand column is square tube type steel, the lower end opening is fixed on the frame cross beam, a fixing plate with a groove-shaped notch is arranged on one vertical surface of the stand column, the stand column and the fixing plate are connected in a welding mode, a support with one end vertically fixed on the stand column is arranged on the surface of the stand column opposite to the fixing plate, the free end of the support is provided with a screw hole with a central line parallel to the stand column, a screw rod meshed with the screw rod is arranged in the screw hole, one end of the screw rod is provided with a nut, the other end of the screw rod is provided with a rotating handle, a wrench hole is formed in the screw rod, and a lifting hook fixed on the frame cross beam is arranged on the frame cross beam.

2. The process lower end beam for a railway wagon of claim 1, wherein: the two pressing arm mechanisms are symmetrical by taking the center of the frame beam as a center.