CN114104941B

CN114104941B - Method for integrally hoisting locomotive and bogie

Info

Publication number: CN114104941B
Application number: CN202111430453.4A
Authority: CN
Inventors: 宋华威; 张智博; 张明超; 秦美超; 曲松; 樊慧
Original assignee: CRRC Dalian Co Ltd
Current assignee: CRRC Dalian Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-07-14
Anticipated expiration: 2041-11-29
Also published as: CN114104941A

Abstract

The invention discloses a method for integrally lifting a locomotive and a bogie, which comprises a boom, wherein the boom comprises a first connecting part, a boom body and a second connecting part which are sequentially connected from top to bottom, the first connecting part is used for connecting the lower end of a central pin of the locomotive, and the second connecting part is connected to a bogie frame below the central pin through a connecting component. The device for integrally lifting the locomotive and the bogie and the lifting method thereof are devices carried by the locomotive during operation, are integrated in the locomotive, do not need to carry out additional operation during whole-vehicle lifting, can be used in the locomotive towed by the center pin, are arranged at the lower part of the center pin, realize connection and lifting of the locomotive and the bogie through the suspender, and have simple structure, convenient installation and reliable quality.

Description

Method for integrally hoisting locomotive and bogie

Technical Field

The invention relates to the technical field of locomotive production, in particular to a method for integrally hoisting a locomotive and a bogie.

Background

An integral lifting device is arranged between the locomotive and the bogie, so that the whole locomotive lifting can be realized in the processes of production, assembly, maintenance, shipment and the like of the locomotive. The integral lifting structure needs to ensure that the vehicle body is reliably connected with the bogie when the whole vehicle is lifted, and the lifting position needs to ensure uniform weight distribution. According to the structural style of different locomotives, the integral lifting structure suitable for the locomotive is arranged, so that the locomotive is simpler, more convenient and reasonable, the reliability is improved, and the cost is saved.

In the prior art, as shown in fig. 1, a lifting seat is respectively arranged on a side beam of a bogie frame and a side wall of a car body and is connected by a chain, so that the reliable connection between the bogie frame and the car body is ensured, and the locomotive lifting is realized.

In the prior art, when the whole car is lifted, chain installation is required every time, and time and labor are consumed. The chain type integral lifting device and the structure have the characteristics of self structure, and the locomotive has a certain deflection angle with the bogie when staying at a curve, so that the chain is blocked and is not easy to install.

Based on this, the prior art still remains to be improved.

Disclosure of Invention

In order to solve the technical problems, the embodiment of the invention provides a device and a lifting method for integrally lifting a locomotive and a bogie, which are used for solving the technical problems of the lifting device in the prior art.

On one hand, the device for integrally lifting the locomotive and the bogie disclosed by the embodiment of the invention comprises a boom, wherein the boom comprises a first connecting part, a boom body and a second connecting part which are sequentially connected from top to bottom,

the first connecting part is used for connecting the lower end of a central pin of the locomotive, and the second connecting part is connected to a bogie frame below the central pin through a connecting assembly.

Further, the lower part of the center pin is provided with an upward recessed seating groove; the first connecting part is fixed in the placement groove.

Further, a first pin hole penetrating through the mounting groove is formed in the lower portion of the center pin, and a second pin hole is formed in the first connecting portion; the first pin hole and the second pin hole are fixed through pins.

Further, during lifting, the boom provides a first degree of freedom of clearance between the kingpin and the bogie frame.

Further, the first gap is formed to ensure that the secondary side bearing between the bogie and the car body is not separated from the side bearing seat when the secondary side bearing returns to the free height during hoisting.

Further, the truck frame further comprises a lifting pad, and the truck frame is provided with a lifting hole through which the second connecting part can pass;

the lifting pad is fixed on the lower surface of the bogie frame, and the second connecting portion is limited below the lifting hole through the lifting pad.

Further, a first gap is formed between the upper end of the second connecting portion and the lower surface of the lifting pad.

Further, the second connecting part and the suspender body form an inverted T-shaped structure,

the lifting backing plate is of a U-shaped structure, and the width of a gap of the U-shaped structure is larger than the width of the suspender body and smaller than the width of the second connecting portion.

On the other hand, the embodiment of the invention also discloses a method for integrally hoisting the locomotive and the bogie, wherein the two ends of the suspender are respectively connected with the center pin and the bogie frame, and the suspender enables the center pin and the bogie frame to have a first clearance degree of freedom;

a connecting rod is adopted to replace a series of vertical shock absorbers so as to ensure the rigid connection between the bogie frame and the wheel axle driving device;

and then lifting.

Further, one end of the connecting rod is connected with the bogie frame, and the other end of the connecting rod is connected with the axle box; the link provides a second degree of freedom of clearance between the bogie frame and the axle housing;

and 0 < second gap < first gap.

Further, one end of the connecting axle box is provided with a slotted hole, and after the connecting axle box is connected, the connecting piece of the axle box is positioned at the upper end of the slotted hole, so that the connecting piece can generate displacement of a second clearance distance in the slotted hole in the lifting process.

By adopting the technical scheme, the invention has at least the following beneficial effects:

the device for integrally lifting the locomotive and the bogie and the lifting method thereof are devices carried by the locomotive during operation, are integrated in the locomotive, do not need to carry out additional operation during whole-vehicle lifting, can be used in the locomotive towed by the center pin, are arranged at the lower part of the center pin, realize connection and lifting of the locomotive and the bogie through the suspender, and have simple structure, convenient installation and reliable quality.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art structure of the present invention;

FIG. 2 is a schematic diagram of an apparatus for integrally lifting a locomotive and a bogie according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a partial view in the B direction of FIG. 2;

fig. 5 is a schematic diagram of a connecting rod connection structure of a method for integrally lifting a locomotive and a bogie according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that, in the embodiments of the present invention, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.

As shown in fig. 2-5, some embodiments of the present invention disclose an apparatus for integrally lifting a locomotive and a bogie, comprising a boom 6, wherein the boom 6 comprises a first connecting portion, a boom 6 body and a second connecting portion sequentially connected from top to bottom, wherein the first connecting portion is used for connecting the lower end of a center pin 1 of the locomotive, and the second connecting portion is connected to a bogie frame 7 below the center pin 1 through a connecting assembly. An upwardly recessed seating groove may be provided at a lower portion of the center pin 1; the first connecting part is fixed in the placement groove. The first connecting part and the center pin 1 can be connected through a pin 4, specifically, a first pin hole penetrating through the mounting groove is further formed in the lower part of the center pin 1, and a second pin hole is formed in the first connecting part; the first pin hole and the second pin hole are fixed by a pin 4. The boom 6 gives a first degree of freedom of clearance between the centre pin 1 and the bogie frame 7. During lifting, the boom 6 will gradually come into contact with the bogie frame 7 when lifted, and the first gap will gradually disappear. The first gap is formed by a first clearance, a second clearance is formed between the bogie and the car body, and the second clearance is formed by a second clearance, a third clearance and a fourth clearance.

Some embodiments of the present invention disclose a device for integrally lifting a locomotive and a bogie, which, on the basis of the above embodiments, as shown in fig. 2-4, further includes a lifting pad 5, where the bogie frame 7 has a lifting hole through which the second connection portion can pass; the lifting pad 5 is fixed to the lower surface of the bogie frame 7, and the second connection portion is limited below the lifting hole by the lifting pad 5. A first gap is arranged between the upper end of the second connecting part and the lower surface of the lifting backing plate 5, so that the secondary side bearing between the bogie and the car body is prevented from being separated from the side bearing seat when the bogie returns to the free height during lifting.

In some specific embodiments, the second connecting portion and the boom 6 body form an inverted T-shaped structure, the lifting pad 5 is a U-shaped structure, and a width of a gap of the U-shaped structure is greater than a width of the boom 6 body and less than a width of the second connecting portion. Thereby effecting a connection between the second connection and the bogie frame 7.

In the embodiment, a central single-rod hoisting mode is adopted, a boom 6 is arranged at the lower part of a central pin 1, and the connection and hoisting of a locomotive and a bogie are realized through the forced connection and matching of the T-shaped boom 6 and a U-shaped hoisting base plate 5.

The embodiment of the invention also discloses a method for integrally lifting the locomotive and the bogie by adopting the device, wherein the two ends of the boom 6 are respectively connected with the center pin 1 and the bogie frame 7, and the boom 6 enables the center pin 1 and the bogie frame 7 to have a first clearance degree of freedom;

the connecting rod 11 is adopted to replace a series of vertical shock absorbers so as to ensure the rigid connection between the bogie frame 7 and the wheel axle driving device; when in use, one end of the connecting rod 11 is connected with the bogie frame 7, and the other end is connected with the axle box 10; the link 11 provides a second degree of freedom of clearance between the bogie frame 7 and the axlebox 10; and 0 < second gap < first gap.

And then lifting.

In some embodiments of the present invention, as shown in fig. 2, in a locomotive towed by the center pin 1, an inverted "T" boom 6 is provided at the lower portion of the center pin 1, and the boom 6 is connected with the center pin 1 through a pin 4; the U-shaped lifting base plate 5 is mounted on the framework through a fastening bolt; a reasonable free gap a is arranged between the suspender 6 and the U-shaped lifting base plate 5, and after the free gap a (first gap) is compensated during whole car lifting, the suspender 6 lifts the U-shaped lifting base plate 5, namely the whole bogie.

When the whole vehicle is required to be lifted, as shown in fig. 5, the original vertical shock absorber needs to be replaced by a connecting rod 11 at a primary suspension part so as to ensure the rigid connection between the framework of the bogie and the wheel axle driving device. The free clearance (second clearance) of the link 11 after installation in the dropped state is b.

Relation between free gap a of boom 6 and U-shaped lifting pad 5 and free gap b of connecting rod 11 mounted at the primary suspension part: 0 < b < a. Meanwhile, the value of a should ensure that the secondary side bearing between the bogie and the car body is not separated from the side bearing seat when the secondary side bearing returns to the free height during hoisting.

The bogie pulled by the center pin 1 is adopted, and the weight difference of the front wheel and the rear wheel and the weight difference of the left wheel and the right wheel at the lifting position are required to be within +/-2 percent so as to ensure that the weight distribution of the bogie is uniform during lifting. The center pin 1, the boom 6, the hoisting pad 5, and the pin 4 are required to have sufficient strength.

Examples

According to the device for integrally lifting the locomotive and the bogie, the lifting backing plate 5 on the framework is lifted through the lifting rod 6 arranged below the center pin 1, so that the locomotive and the bogie are lifted and connected.

As shown in fig. 2, a boom 6 is installed at the lower part of the center pin 1, the boom 6 is in a T-shaped structure, and the center pin 1 and the boom 6 are connected through a pin 4. When the locomotive is assembled, the suspender 6 is connected to the center pin 1 through the pin 4, and then the force transmission seat 3 is pressed into the pin surface of the center pin 1, and the force transmission seat can transmit force to the longitudinal baffle 2 and the transverse baffle 8. After the assembly is completed, the vehicle body, the center pin 1, the suspension rod 6 and the like are integrally dropped together to be assembled on the bogie;

as shown in fig. 4, the U-shaped lifting pad 5 is fastened and fixed at the lower part of the beam of the bogie frame 7 by bolts, and a gap of a distance a is reserved between the suspender 6 and the U-shaped lifting pad 5;

the distance a between the suspender 6 and the U-shaped lifting base plate 5 is required to ensure that the secondary side bearing is not separated from the side bearing seat when the secondary side bearing returns to the free height.

Square holes for penetrating the suspender 6 are formed in the frame cross beam, and the size of the end (second connecting part) of the suspender 6 is required to be larger than that of the square holes so as to ensure the installation and the disassembly of the integral lifting device;

when the whole car is lifted, the whole lifting device is assembled, and no additional operation is needed; only as shown in fig. 5, the original vertical damper is replaced with the link 11 at the primary suspension portion.

The center pin 1, the suspender 6, the U-shaped lifting base plate 5 and the pin 4 connected with the suspender 6 and the center pin 1 are made of high-strength alloy materials, and the weight of the whole bogie is required to be borne without being damaged;

the locomotive and bogie integral hoisting device adopts a central single-rod hoisting mode, which is different from a conventional bogie four-point hoisting mode through a chain. The invention has the advantages of simple structure, convenient installation, reliable quality and low economic cost.

In summary, the front and rear wheel weight differences and the left and right wheel weight differences of the lifting position are required to be ensured to be within +/-2%. Relation between free clearance a of boom and U-shaped lifting pad and free clearance b of connecting rod installed at primary suspension part: 0 < b < a. Meanwhile, the value of a should ensure that the secondary side bearing between the bogie and the car body is not separated from the side bearing seat when the secondary side bearing returns to the free height during hoisting. The device is suitable for the integral hoisting structure of the center pin traction locomotive, is a device which is self-carried when the locomotive runs, and does not need to be disassembled. When the whole car is lifted, only the hanging part of the primary suspension is replaced by a hanging rod for connection. Simple structure, time and labor saving and low economic cost. When the locomotive is lifted, due to the characteristic of the center pin traction structure, the flexible rotation of the locomotive body and the bogie can be realized without being blocked. The risk of collision and clamping stagnation of the bogie lifting seat, the chain and the car body lifting seat existing in the original integral lifting structure is avoided. The operation is simple, the lifting and the rotation are flexible, the clamping stagnation and the collision are avoided, and the reliability of the whole lifting of the locomotive is improved.

It should be noted that, each component or step in each embodiment may be intersected, replaced, added, and deleted, and therefore, the combination formed by these reasonable permutation and combination transformations shall also belong to the protection scope of the present invention, and shall not limit the protection scope of the present invention to the embodiments.

The foregoing is an exemplary embodiment of the present disclosure, and the order in which the embodiments of the present disclosure are disclosed is merely for the purpose of description and does not represent the advantages or disadvantages of the embodiments. It should be noted that the above discussion of any of the embodiments is merely exemplary and is not intended to suggest that the scope of the disclosure of embodiments of the invention (including the claims) is limited to these examples and that various changes and modifications may be made without departing from the scope of the invention as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.

Those of ordinary skill in the art will appreciate that: the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the invention, including the claims, is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of an embodiment of the invention, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are made within the spirit and principles of the embodiments of the invention, are included within the scope of the embodiments of the invention.

Claims

1. A method for integrally hoisting a locomotive and a bogie, characterized in that two ends of a boom of a device for integrally hoisting the locomotive and the bogie are respectively connected with a center pin and a bogie frame, and the boom enables the center pin and the bogie frame to have a first clearance degree of freedom;

then hoisting;

wherein the device for integrally lifting the locomotive and the bogie comprises a boom, the boom comprises a first connecting part, a boom body and a second connecting part which are sequentially connected from top to bottom,

2. The method according to claim 1, wherein the lower portion of the center pin is provided with an upwardly recessed seating groove; the first connecting part is fixed in the placement groove.

3. The method of claim 2, wherein the lower portion of the center pin is further provided with a first pin hole penetrating the seating groove, and the first connection portion is provided with a second pin hole; the first pin hole and the second pin hole are fixed through pins.

4. The method of claim 1, wherein the boom provides a first clearance degree of freedom between the center pin and the bogie frame during lifting.

5. The method of claim 4, wherein the first gap is sized to ensure that the secondary side bearing between the truck and the body of the vehicle does not disengage from the side bearing seat when the truck and body of the vehicle return to a free height during lifting.

6. The method of claim 1, further comprising a lifting pad having lifting holes in the bogie frame through which the second connection portions pass;

7. The method of claim 6, wherein a first gap is provided between an upper end of the second connection portion and a lower surface of the lifting pad.

8. The method of claim 6, wherein the second connection forms an inverted T-shaped structure with the boom body,

9. The method of claim 1, wherein the link is connected to the bogie frame at one end and to an axle box at the other end; the link provides a second degree of freedom of clearance between the bogie frame and the axle housing;

and 0 < second gap < first gap.