CN116001835A - Wearing plate mounting structure and elastic side bearing with same - Google Patents

Abstract

The invention discloses a wearing plate mounting structure and an elastic side bearing with the same, wherein the wearing plate mounting structure comprises a wearing plate, an upper side bearing plate and an upper side bearing cone body, and is characterized in that: the bottom of the wearing plate is provided with a first limiting boss, and the first limiting boss is provided with a through hole; the side bearing upper plate is provided with a groove for embedding the first limit boss and a slot hole arranged in the middle of the groove, and the upper end of the side bearing upper cone is embedded in the slot hole; an elastic piece is filled in a gap formed between the first limiting boss and the groove in the horizontal direction; the wearing plate passes through the through hole and is fixedly connected with the upper cone of the side bearing through a fastener, so that the upper plate of the side bearing is tightly pressed. The invention solves the problems that the existing side bearing wearing plate is inconvenient to assemble and disassemble, the middle bulge is easy to appear in the application process, and the contact area of the friction pair is small.

Description

Wear plate mounting structure and elastic side bearings therewith

technical field

The invention relates to the technical field of railway freight car side bearings, in particular to a wear plate installation structure and an elastic side bearing having the same.

Background technique

At present, the railway freight car pendulum bogie mainly adopts BD type elastic side bearing. The wear plate of the side bearing is two discs with a diameter of 60mm. In the groove, the fit is an interference fit, which is used to ensure that the wear plate does not come out by itself; the structure adopts an interference fit, and when replacing the wear plate, special tools are required to disassemble the wear plate; in addition, the wear plate and the side support upper plate The expansion rate is inconsistent, and under the interference fit, the wear plate will protrude in the middle during actual use, which will affect the performance of the accessories; the contact area between the wear plate of the side bearing and the upper side bearing of this structure is obviously smaller than that of other side bearings of the same type , resulting in a large force on the wear plate, and faster wear than other types of side bearing wear plates.

Based on the above situation, the present invention proposes a wear plate installation structure and an elastic side bearing with it, which can effectively solve the above problems.

Contents of the invention

Aiming at the problems of the above-mentioned deficiencies in the prior art, the present invention provides a wear plate installation structure and an elastic side bearing with it. The invention solves the problems of inconvenient disassembly and assembly of the existing side bearing wear plates, protruding middle during use, and small contact area of friction pairs.

In order to solve the problems of the technologies described above, the present invention is realized through the following technical solutions:

In the first aspect, the present invention provides a wear plate installation structure, which includes a wear plate, a side bearing upper plate and a side support upper cone, the bottom of the wear plate is provided with a first limiting boss, and the first limiting boss A through hole is provided on the platform; a groove for embedding the first limiting boss and a slot hole in the middle of the groove are arranged on the upper plate of the side bearing, and the upper vertebral body of the side bearing The upper end is embedded in the slot; the gap formed by the first limiting boss and the groove in the horizontal direction is filled with an elastic member; the wear plate passes through the through hole and the through hole through a fastener. The upper vertebral body of the side bearing is fastened and connected, thereby compressing the upper plate of the side bearing.

Preferably, the through hole is a stepped hole, and there is a distance between the upper end surface of the fastener and the upper surface of the wearing plate.

Preferably, the wear plate is a flat plate structure, and the wear plate completely covers the surface of the upper plate of the side bearing.

Preferably, the elastic member is a rubber ring, and the rubber ring is sleeved on the first limiting boss.

Preferably, the upper end of the upper vertebral body of the side bearing has a second limiting boss, the second limiting boss is adapted to the slot hole, and the second limiting boss is fixedly connected with the fastener .

Further, the slot hole and the edge of the second limiting boss are both provided with semicircular pin holes, and positioning pins are embedded in the two semicircular pin holes.

Further, the first limiting boss, the second limiting boss and the groove are all circular structures.

Preferably, there are two first limiting bosses at the bottom of the wearing plate, and the grooves and the upper cones of the side bearings are provided in one-to-one correspondence with the first limiting bosses.

In a second aspect, the present invention provides an elastic side bearing, which includes a side bearing body and the above-mentioned wear plate installation structure.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. In the present invention, the side bearing wear plate and the side bearing upper plate are fixed by fasteners (bolts can be used), and the disassembly and assembly of the wear plate can be completed only by disassembling and assembling the bolts, which is convenient for replacement.

2. The upper area of the wear plate of the side bearing of the present invention completely covers the plane of the upper plate of the side support, and the contact area of the friction pair increases, which can reduce the wear rate of the wear plate.

3. The first limiting boss of the side bearing wear plate of the present invention is inserted into the groove of the upper plate of the side bearing, and the interference fit structure of the original structure is changed to a gap fit filling rubber method, which solves the problem of the interference fit of the original structure. Large force, easy to disassemble and at the same time through the deformation of the rubber, to avoid the middle protruding failure of the original structure of the wear plate due to the problem of inconsistent thermal expansion rate.

4. There is a rubber ring between the first limiting boss and the groove of the present invention. During assembly, the compressibility of the rubber ring is used to provide the horizontal positioning function of the wear plate of the side bearing; the bolt provides vertical fastening during the fit. , the force is small, and its service life can be improved.

5. In the present invention, the rubber ring filled between the first limiting boss and the groove has a certain pre-compression force, which can provide the minimum rotation resistance requirement during the running of the vehicle.

6. In the present invention, the through hole is set as a stepped hole, and the fastener can sink into the stepped hole to fasten and connect with the upper end of the upper vertebral body of the side bearing. There is a distance between the upper end surface of the fastener and the end surface of the wear plate. You can quickly judge the wear condition of the side bearing wear plate through this distance.

Description of drawings

Fig. 1 is a schematic perspective view of the three-dimensional structure of the elastic side bearing with the wearing plate installation structure of the present invention.

FIG. 2 is a schematic cross-sectional structure diagram of FIG. 1 .

Fig. 3 is a three-dimensional schematic diagram of the wear plate of the wear plate installation structure of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of a wear plate of the wear plate installation structure of the present invention.

Fig. 5 is a top structural schematic diagram of the side support upper plate of the wearing plate installation structure of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of the side bearing upper plate of the wearing plate installation structure of the present invention.

Fig. 7 is a schematic perspective view of the three-dimensional structure of the upper vertebral body of the side bearing of the wear plate installation structure of the present invention.

Fig. 8 is a top structural schematic diagram of the upper vertebral body of the side bearing of the wearing plate installation structure of the present invention.

Fig. 9 is a three-dimensional schematic diagram of the rubber ring of the wear plate installation structure of the present invention.

Reference signs: wear plate 1, first limiting boss 11, through hole 12, side support upper plate 2, groove 21, slot hole 22, semicircular pin hole 23, side support upper vertebral body 3, second Limiting boss 31 , threaded hole 32 , elastic member 4 , fastener 5 , side support body 6 .

Detailed ways

In order to further explain the technical means and functions adopted by the present invention to achieve the predetermined purpose, the specific implementation and working principle of a wear plate installation structure proposed according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

The invention provides a wear plate installation structure, aiming to optimize the original side bearing wear plate structure, the side support upper plate and the side support upper vertebral body structure, change the installation method, and increase the contact area of the friction pair.

As shown in Figures 1-6, in one embodiment:

The wear plate installation structure includes a wear plate 1, a side support upper plate 2, an elastic member 4 and a side support upper vertebral body 3, wherein the bottom of the wear plate 1 is provided with a first limiting boss 11, and on the first limiting boss 11 A through hole 12 is provided; the side support upper plate 2 is provided with a groove 21 for embedding the first limit boss 11 and a slot hole 22 arranged in the middle of the groove 21, and the upper end of the side support upper vertebral body 3 is embedded In the slot hole 22; the gap formed by the first limiting boss 11 and the groove 21 in the horizontal direction is filled with an elastic member 4; the wear plate 1 passes through the through hole 12 and the side bearing upper vertebral body 3 through the fastener 5 Tighten the connection, thereby compressing the upper plate 2 of the side bearing. Both the first limiting boss 11 and the groove 21 are circular in structure.

It can be known from the above structural design that this embodiment changes the interference fit structure of the original structure to a gap fit filling rubber ring, which solves the large force of the interference fit of the original structure, and can avoid the wear of the original structure through the deformation of the rubber Plate 1 has a mid-bulge failure due to a problem with inconsistent thermal expansion rates. In addition, the side bearing wear plate 1 and the side bearing upper plate are fixed with fasteners 5, and the disassembly and assembly of the wear plate 1 can be completed only by disassembling the fastener 5, which is convenient for replacement.

Further, in one embodiment, the fastener 5 preferably adopts bolts, and the upper end of the side bearing upper vertebral body 3 is correspondingly provided with a threaded hole 32, and the bolt is matched with the threaded hole 32, and the bolt is screwed into the side bearing upper vertebra through the through hole 12. In the center hole of the body, thereby pressing the wear plate 1.

Further, in one embodiment, there are two first limiting bosses 11 at the bottom of the wear plate 1 , and the grooves 21 and the upper cones 3 of the side bearing are provided in one-to-one correspondence with the first limiting bosses 11 .

As shown in Figures 1-4, in one embodiment:

The wear plate 1 is set as a flat plate structure, and the wear plate 1 completely covers the surface of the side support upper plate 2, and the contact area of the friction pair increases, which can reduce the wear rate of the wear plate 1.

As shown in Figures 3 and 4, in one embodiment:

The through hole 12 is set as a stepped hole, and the fastener 5 can sink into the stepped hole to fasten and connect with the upper end of the upper vertebral body 3 of the side bearing. There is a distance between the upper end surface of the fastener 5 and the upper end surface of the wear plate 1, and the distance is 3.5 mm, the wear condition of the side bearing wear plate 1 can be quickly judged through this distance in the actual application process.

As shown in Figures 2 and 9, in one embodiment:

The elastic part 4 is set as a rubber ring, and the rubber ring is set on the first limiting boss 11. During assembly, the compressibility of the rubber ring is used to provide the horizontal positioning function of the side bearing wear plate 1; it can also be deformed by the rubber, Avoid the middle protruding failure of the wear plate 1 of the original structure due to the problem of inconsistent thermal expansion rate. The rubber ring has a certain pre-compression force, which can provide the minimum turning resistance requirement during the running of the vehicle.

As shown in Figures 5-8, in an embodiment:

The upper end of the side bearing upper vertebral body 3 has a second spacer boss 31, the second spacer boss 31 is a circular structure; the second spacer boss 31 is compatible with the slot hole 22, and the second spacer boss 31 The middle part is provided with threaded hole 32, is fixedly connected with bolt; Slotted hole 22 edge is provided with semicircular pin hole 23, and the edge of the second position-limiting boss 31 is also provided with semicircular pin hole 23, and cylindrical locating pin (Fig. Not shown in the middle) simultaneously embedded in two semicircular pin holes 23, play the effect of fixing the upper vertebral body 3 of the side bearing and the upper plate 2 of the side bearing, and prevent it from rotating.

As shown in Figures 1 and 2, in one embodiment:

This embodiment provides an elastic side bearing, which includes a side bearing body 6 and the installation structure of the wearing plate 1 as mentioned above.

When installing the installation structure of wear plate 1, firstly put the rubber ring on the first limiting boss 11, and then embed the first limiting boss 11 and the rubber ring together in the groove 21 of the upper side bearing plate, Then put the wear plate 1 and the upper plate of the side bearing together on the second limit boss 31 of the upper vertebral body 3 of the side bearing, and finally sink into the through hole 12 by the bolt and tighten and fix it.

When the wear plate 1 or the rubber ring needs to be replaced, after the bolts are removed, the wear plate 1 or the rubber ring can be taken out upwards, and the wear plate 1 can be quickly replaced without any impact on other structures.

According to the description and accompanying drawings of the present invention, those skilled in the art can easily manufacture or use a wearing plate installation structure of the present invention, and can produce the positive effects recorded in the present invention.

Unless otherwise specified, in the present invention, if there are terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", " The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" etc. is Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore the present invention The terms describing the orientation or positional relationship in the document are only for illustrative purposes, and should not be construed as limitations on this patent. Those skilled in the art can understand the specific meanings of the above terms according to specific situations in conjunction with the accompanying drawings.

Unless otherwise clearly specified and limited, in the present invention, if the terms "arrangement", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection ; It can be directly connected, or indirectly connected through an intermediary, and can be internally connected between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications and equivalent changes made to the above embodiments according to the technical essence of the present invention all fall within the scope of the present invention. within the scope of protection.

Claims (9)

1. The utility model provides a wearing plate mounting structure, includes wearing plate (1), side bearing upper plate (2) and side bearing upper cone (3), its characterized in that: a first limiting boss (11) is arranged at the bottom of the wearing plate (1), and a through hole (12) is formed in the first limiting boss (11); the side bearing upper plate (2) is provided with a groove (21) for embedding the first limiting boss (11) and a slot hole (22) arranged in the middle of the groove (21), and the upper end of the side bearing upper cone body (3) is embedded in the slot hole (22); an elastic piece (4) is filled in a gap formed between the first limit boss (11) and the groove (21) in the horizontal direction; the wearing plate (1) is tightly connected with the side bearing upper cone body (3) through the through hole (12) by a fastener (5), so as to press the side bearing upper plate (2).

2. The wear plate mounting structure of claim 1, wherein: the through holes (12) are stepped holes, and a space is reserved between the upper end face of the fastening piece (5) and the upper end face of the wearing plate (1).

3. The wear plate mounting structure of claim 1, wherein: the wearing plate (1) is of a flat plate structure, and the wearing plate (1) is completely covered on the surface of the side bearing upper plate (2).

4. The wear plate mounting structure of claim 1, wherein: the elastic piece (4) is a rubber ring, and the rubber ring is sleeved on the first limiting boss (11).

5. The wear plate mounting structure of claim 1, wherein: the upper end of the upper cone body (3) of the side bearing is provided with a second limiting boss (31), the second limiting boss (31) is matched with the slotted hole (22), and the second limiting boss (31) is fixedly connected with the fastener (5).

6. A wear plate mounting structure in accordance with claim 5, wherein: the edges of the slotted hole (22) and the second limiting boss (31) are provided with semicircular pin holes (23), and positioning pins are embedded in the two semicircular pin holes (23).

7. A wear plate mounting structure in accordance with claim 5, wherein: the first limiting boss (11), the second limiting boss (31) and the groove (21) are all of circular structures.

8. The wear plate mounting structure of claim 1, wherein: the wear plate (1) is characterized in that two first limiting bosses (11) are arranged at the bottom of the wear plate (1), and the grooves (21) and the side bearing upper cone bodies (3) are arranged in one-to-one correspondence with the first limiting bosses (11).

9. An elastic side bearing, characterized in that: the resilient side bearing comprising a side bearing body (6) and the wear plate mounting structure of any one of claims 1-8.

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