Wear plate mounting structure and elastic side bearing having the same

Abstract

The present invention discloses a wear plate mounting structure and an elastic side bearing having the same, the wear plate mounting structure comprises a wear plate, a side bearing upper plate and a side bearing upper vertebral body, and is characterized in that: a first limiting boss is arranged at the bottom of the wear plate, a through hole is arranged on the first limiting boss; a groove for embedding the first limiting boss and a slot hole arranged in the middle of the groove are arranged on the side bearing upper plate, and the upper end of the side bearing upper vertebral body is embedded in the slot hole; the gap formed by the first limiting boss and the groove in the horizontal direction is filled with an elastic member; the wear plate is fastened to the side bearing upper vertebral body through the through hole by a fastener, thereby pressing the side bearing upper plate. The present invention solves the problems of inconvenient assembly and disassembly of the existing side bearing wear plate, easy bulge in the middle during use, and small contact area of ​​the friction pair.

Description

Technical Field

[0001] The invention relates to the technical field of railway freight car side bearings, and in particular to a wear plate mounting structure and an elastic side bearing having the same. Background Art

[0002] At present, the railway freight car tilting bogie mainly adopts BD type elastic side bearing, the side bearing wear plate is two discs with a diameter of 60mm. When installing the disc, the wear plate is pressed into the corresponding groove of the side bearing upper plate by a press. The fit is an interference fit, which is used to ensure that the wear plate does not fall out by itself; the interference fit adopted in this structure requires special tools to disassemble and assemble the wear plate when replacing the wear plate; in addition, the expansion rate of the wear plate and the side bearing upper plate is inconsistent. Under the interference fit, the wear plate will have the problem of bulging in the middle during actual use, affecting the performance of the accessories; the contact area between the side bearing wear plate and the upper side bearing of this structure is significantly smaller than that of other side bearings of the same type, resulting in large force on the wear plate and faster wear than other types of side bearing wear plates.

[0003] Based on the above situation, the present invention proposes a wear plate mounting structure and an elastic side bearing having the same, which can effectively solve the above problems. Summary of the invention

[0004] In view of the above-mentioned problems of the existing technology, the present invention provides a wear plate installation structure and an elastic side bearing having the same. The present invention solves the problems of inconvenient assembly and disassembly of the existing side bearing wear plate, easy bulge in the middle during use, and small contact area of ​​the friction pair.

[0005] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0006] In the first aspect, the present invention provides a wear plate mounting structure, comprising a wear plate, a side bearing upper plate and a side bearing upper vertebral body, wherein a first limiting boss is arranged at the bottom of the wear plate, and a through hole is arranged on the first limiting boss; a groove for embedding the first limiting boss and a slot hole arranged in the middle of the groove are arranged on the side bearing upper plate, and the upper end of the side bearing upper vertebral body is embedded in the slot hole; an elastic member is filled in the gap formed in the horizontal direction by the first limiting boss and the groove; the wear plate is fastened to the side bearing upper vertebral body by fasteners passing through the through hole, thereby pressing the side bearing upper plate.

[0007] Preferably, the through hole is a stepped hole, and there is a distance between the upper end surface of the fastener and the upper end surface of the wear plate.

[0008] Preferably, the wear plate is a flat plate structure, and the wear plate completely covers the surface of the side bearing upper plate.

[0009] Preferably, the elastic member is a rubber ring, and the rubber ring is sleeved on the first limiting boss.

[0010] Preferably, the upper end of the side bearing upper vertebral body has a second limiting boss, the second limiting boss is matched with the slot, and the second limiting boss is fixedly connected to the fastener.

[0011] Furthermore, 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.

[0012] Furthermore, the first limiting boss, the second limiting boss and the groove are all circular structures.

[0013] Preferably, two first limiting bosses are provided at the bottom of the wear plate, and the groove and the side bearing upper vertebral body are provided in a one-to-one correspondence with the first limiting bosses.

[0014] In a second aspect, the present invention provides an elastic side bearing, which includes a side bearing body and the wear plate mounting structure as described above.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The side bearing wear plate and the side bearing upper plate of the present invention are fixed by fasteners (bolts may be used). The wear plate can be disassembled and assembled only by disassembling and assembling the bolts, which is convenient for replacement.

[0017] 2. The upper area of ​​the side bearing wear plate of the present invention completely covers the plane of the side bearing upper plate, the contact area of ​​the friction pair is increased, and the wear rate of the wear plate can be reduced.

[0018] 3. The first limiting boss of the side bearing wear plate of the present invention is embedded in the groove of the side bearing upper plate, and the interference fit structure of the original structure is changed to a clearance fit filled with rubber, which solves the large force of the interference fit of the original structure, facilitates disassembly and assembly, and can also avoid the middle bulge failure caused by the inconsistent thermal expansion rate of the original structure wear plate through the deformation of the rubber.

[0019] 4. A rubber ring is provided between the first limiting boss and the groove of the present invention. The compressibility of the rubber ring is utilized during assembly to provide a horizontal positioning function for the side bearing wear plate; the bolt provides a vertical tightening effect during the cooperation, with little force, which can increase its service life.

[0020] 5. The rubber ring filled between the first limiting boss and the groove in the present invention has a certain pre-compression force, which can provide the minimum rotation resistance requirement during the operation of the vehicle.

[0021] 6. The through hole in the present invention is set as a stepped hole, and the fastener can be sunk into the stepped hole and fastened to 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 upper end surface of the wear plate. In actual use, the wear condition of the side bearing wear plate can be quickly judged by the distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of an elastic side bearing having the wear plate mounting structure of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the wear plate of the wear plate mounting structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the wear plate of the wear plate mounting structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the top structure of the side bearing upper plate of the wear plate installation structure of the present invention.

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the side bearing upper plate of the wear plate mounting structure of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the upper vertebral body of the side bearing of the wear plate installation structure of the present invention.

[0029] Figure 8 It is a schematic diagram of the top view of the upper vertebral body of the side bearing of the wear plate installation structure of the present invention.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rubber ring of the wear plate mounting structure of the present invention.

[0031] Figure numerals: wear plate 1, first limiting boss 11, through hole 12, side bearing upper plate 2, groove 21, slot hole 22, semicircular pin hole 23, side bearing upper vertebral body 3, second limiting boss 31, threaded hole 32, elastic member 4, fastener 5, side bearing body 6. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation method and working principle of a wear plate mounting structure proposed in accordance with the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] The present invention provides a wear plate installation structure, which aims to optimize the original side bearing wear plate structure, the side bearing upper plate and the side bearing upper vertebral body structure, change the installation method thereof and increase the contact area of ​​the friction pair.

[0034] like Figure 1-6 As shown, in one embodiment:

[0035] The wear plate installation structure includes a wear plate 1, a side bearing upper plate 2, an elastic member 4 and a side bearing upper vertebra 3, wherein a first limiting boss 11 is provided at the bottom of the wear plate 1, and a through hole 12 is provided on the first limiting boss 11; a groove 21 for embedding the first limiting boss 11 and a slot 22 provided in the middle of the groove 21 are provided on the side bearing upper plate 2, and the upper end of the side bearing upper vertebra 3 is embedded in the slot 22; the gap formed by the first limiting boss 11 and the groove 21 in the horizontal direction is filled with the elastic member 4; the wear plate 1 is fastened to the side bearing upper vertebra 3 through the fastener 5 through the through hole 12, thereby pressing the side bearing upper plate 2. The first limiting boss 11 and the groove 21 are both circular structures.

[0036] As can be seen from the above structural design, this embodiment changes the interference fit structure of the original structure into a gap fit filling rubber ring, which solves the large force of the interference fit of the original structure and can avoid the middle bulge failure of the wear plate 1 of the original structure due to the problem of inconsistent thermal expansion rate through the deformation of the rubber. In addition, the side bearing wear plate 1 and the side bearing upper plate are fixed with fasteners 5, and the wear plate 1 can be disassembled and assembled by only disassembling the fasteners 5, which is convenient for replacement.

[0037] Furthermore, in one embodiment, the fastener 5 is preferably a bolt, and a threaded hole 32 is correspondingly provided at the upper end of the side bearing upper vertebral body 3, and the bolt is matched and connected with the threaded hole 32, and the bolt is screwed into the center hole of the side bearing upper vertebral body through the through hole 12, thereby tightening the wear plate 1.

[0038] Furthermore, in one embodiment, two first limiting bosses 11 are provided at the bottom of the wear plate 1 , and the grooves 21 and the side bearing upper cone 3 are provided in one-to-one correspondence with the first limiting bosses 11 .

[0039] like Figure 1-4 As shown, in one embodiment:

[0040] The wear plate 1 is configured as a flat plate structure, and the wear plate 1 completely covers the surface of the side bearing upper plate 2 , so that the contact area of ​​the friction pair is increased, and the wear rate of the wear plate 1 can be reduced.

[0041] like Figure 3 and 4 As shown, in one embodiment:

[0042] The through hole 12 is set as a stepped hole, and the fastener 5 can be sunk into the stepped hole and fastened to the upper end of the side bearing upper vertebral body 3. There is a spacing between the upper end surface of the fastener 5 and the upper end surface of the wear plate 1, and the spacing is 3.5 mm. In actual use, the wear condition of the side bearing wear plate 1 can be quickly judged by this distance.

[0043] like Figure 2 and 9 As shown, in one embodiment:

[0044] The elastic member 4 is configured as a rubber ring, which is sleeved on the first limiting boss 11. During assembly, the compressibility of the rubber ring is utilized to provide a horizontal positioning function for the side bearing wear plate 1; the deformation of the rubber can also be used to avoid the middle protrusion failure of the original structure wear plate 1 due to the inconsistent thermal expansion rate. The rubber ring has a certain pre-compression force, which can provide the minimum rotation resistance requirement during vehicle operation.

[0045] like Figure 5-8 As shown, in one embodiment:

[0046] A second limiting boss 31 is provided at the upper end of the side bearing upper vertebra 3, and the second limiting boss 31 is a circular structure; the second limiting boss 31 is adapted to the slot hole 22, and a threaded hole 32 is provided in the middle of the second limiting boss 31, which is fixedly connected with a bolt; a semicircular pin hole 23 is provided at the edge of the slot hole 22, and a semicircular pin hole 23 is also provided at the edge of the second limiting boss 31, and a cylindrical positioning pin (not shown in the figure) is embedded in the two semicircular pin holes 23 at the same time, which plays a role in fixing the side bearing upper vertebra 3 and the side bearing upper plate 2 to prevent them from rotating.

[0047] like Figure 1 and 2 As shown, in one embodiment:

[0048] This embodiment provides an elastic side bearing, which includes a side bearing body 6 and the above-mentioned installation structure of the wear plate 1.

[0049] When installing the wear plate 1 installation structure, first put the rubber ring on the first limiting boss 11, then embed the first limiting boss 11 and the rubber ring together in the groove 21 of the side bearing upper plate, then place the wear plate 1 and the side bearing upper plate together on the second limiting boss 31 of the side bearing upper vertebral body 3, and finally sink the bolts into the through holes 12 and tighten them to fix them.

[0050] When the wear plate 1 or the rubber ring needs to be replaced, the bolts are removed and the wear plate 1 or the rubber ring is taken out upwards. The wear plate 1 can be replaced quickly without any impact on other structures.

[0051] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use a wear plate mounting structure of the present invention, and can produce the positive effects described in the present invention.

[0052] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0053] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood 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 intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A wear plate mounting structure, comprising a wear plate (1), a side bearing upper plate (2) and a side bearing upper vertebral body (3), Features: The wear plate (1) is provided with a first limiting boss (11) at the bottom, and a through hole (12) is provided on 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) provided in the middle of the groove (21), and the upper end of the side bearing upper cone (3) is embedded in the slot hole (22); the gap formed in the horizontal direction between the first limiting boss (11) and the groove (21) is filled with an elastic member (4); the wear plate (1) is fastened to the side bearing upper cone (3) through a fastener (5) passing through the through hole (12), thereby pressing the side bearing upper plate (2); The upper end of the side bearing upper vertebral body (3) has a second limiting boss (31), the second limiting boss (31) is matched with the slot hole (22), and the second limiting boss (31) is fixedly connected to the fastener (5); the edges of the slot hole (22) and the second limiting boss (31) are both provided with semicircular pin holes (23), and positioning pins are embedded in the two semicircular pin holes (23).

2. The wear plate mounting structure according to claim 1, Features: The through hole (12) is a stepped hole, and there is a distance between the upper end surface of the fastener (5) and the upper end surface of the wear plate (1).

3. The wear plate mounting structure according to claim 1, Features: The wear plate (1) is a flat plate structure, and the wear plate (1) completely covers the surface of the side bearing upper plate (2).

4. The wear plate mounting structure according to claim 1, Features: The elastic member (4) is a rubber ring, and the rubber ring is sleeved on the first limiting boss (11).

5. The wear plate mounting structure according to claim 1, Features: The first limiting boss (11), the second limiting boss (31) and the groove (21) are all circular structures.

6. The wear plate mounting structure according to claim 1, Features: Two first limiting bosses (11) are provided at the bottom of the wear plate (1), and the groove (21) and the side bearing upper cone (3) are provided in a one-to-one correspondence with the first limiting bosses (11).

7. An elastic side bearing, Features: The elastic side bearing comprises a side bearing body (6) and a wear plate mounting structure according to any one of claims 1 to 6.

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