阅读说明：本技术 一种转向架的构架与一系弹性装置的连接结构 (Connecting structure of framework and primary elastic device of bogie ) 是由 周勇 冯遵委 徐力 张扬 王强 毕筠宇 于 2019-09-23 设计创作，主要内容包括：本发明提出一种转向架的构架与一系弹性装置的连接结构,所述一系弹性装置包括位于构架下方的定位转臂；所述定位转臂的内端设置有橡胶节点,橡胶节点包括从定位转臂左右两侧凸出的定位块；所述构架上设置有与定位块一一对应的竖直定位槽；定位块过盈配合嵌入固定在竖直定位槽内；定位块上设置有竖直的螺纹通孔；所述定位转臂上设置有与螺纹通孔同轴的螺纹盲孔；还包括固定螺栓,旋入螺纹盲孔内压紧固定橡胶节点与定位转臂。本发明通过定位块过盈配合嵌入固定在竖直定位槽,使得定位转臂与构架的水平作用力通过橡胶节点传递,固定螺栓不会受到横向剪切力；另外拆卸定位转臂时,以螺纹作用力将橡胶节点从过盈配合嵌入的竖直定位槽内顶出,拆卸方便。(The invention provides a connecting structure of a framework and a primary elastic device of a bogie, wherein the primary elastic device comprises a positioning rotating arm positioned below the framework; the inner end of the positioning rotating arm is provided with a rubber node which comprises positioning blocks protruding from the left side and the right side of the positioning rotating arm; the framework is provided with vertical positioning grooves which correspond to the positioning blocks one by one; the positioning block is embedded and fixed in the vertical positioning groove in an interference fit manner; a vertical threaded through hole is formed in the positioning block; a threaded blind hole coaxial with the threaded through hole is formed in the positioning rotating arm; the fixing bolt is screwed into the threaded blind hole to press and fix the rubber node and the positioning rotating arm. According to the invention, the positioning block is embedded and fixed in the vertical positioning groove in an interference fit manner, so that the horizontal acting force of the positioning rotating arm and the framework is transmitted through the rubber node, and the fixing bolt is not subjected to transverse shearing force; in addition, when the positioning rotating arm is disassembled, the rubber node is ejected out of the vertical positioning groove embedded in the interference fit mode through the thread acting force, and the disassembly is convenient.)

1. A connecting structure of a framework and a series of elastic devices of a bogie comprises a positioning rotating arm (2) positioned below the framework (1); the inner end of the positioning rotating arm (2) is provided with a rubber node, and the rubber node comprises positioning blocks (3) protruding from the left side and the right side of the positioning rotating arm (2); vertical positioning grooves which correspond to the positioning blocks (3) one by one are formed in the framework (1);

the method is characterized in that: the positioning block (3) is embedded and fixed in the vertical positioning groove in an interference fit manner; a vertical threaded through hole (4) is formed in the positioning block (3); the bottom of the vertical positioning groove is provided with a threaded blind hole which is coaxial with the threaded through hole (4);

the fixing bolt (5) is also included; and the fixing bolt (5) is screwed into the threaded blind hole from the lower part of the positioning block (3) to press and fix the rubber node and the positioning rotating arm (2).

2. The connecting structure of a frame and a tie-elastic device of a bogie as set forth in claim 2, wherein: the positioning block (3) is a cuboid and comprises two parallel vertical surfaces which are arranged in the front-back direction; and the two vertical surfaces are in interference fit with the corresponding contact surfaces of the vertical positioning grooves.

3. The connecting structure of a frame and a tie-elastic device of a bogie as set forth in claim 3, wherein: the interference magnitude of the two vertical surfaces and the corresponding contact surfaces of the vertical positioning grooves is 0.04-0.1 mm.

4. A connecting structure of a frame of a bogie according to any one of claims 1 to 3, characterized in that: the diameter of the threaded through hole (4) is larger than that of the threaded blind hole.

5. The connecting structure of a frame and a tie-elastic device of a bogie as set forth in claim 4, wherein: a node mounting hole is formed in the positioning rotating arm (2); the rubber node comprises a mandrel and a rubber sleeve which is vulcanized and fixed in the middle of the mandrel; the rubber sleeve is arranged between the middle part of the mandrel and the node mounting hole in an interference manner; two ends of the mandrel are protruded at two sides of the positioning rotating arm (2) to form positioning blocks (3).

6. The connecting structure of a frame and a tie-elastic device of a bogie as set forth in claim 5, wherein: the elastic device also comprises a steel spring set (6); the steel spring group (6) is positioned at the outer end of the positioning rotating arm (1), is arranged between the framework (1) and the positioning rotating arm (2) in a vertical compression state, and is used for damping vibration of the framework (1) and the positioning rotating arm (2).

Technical Field

The invention belongs to the field of railway vehicle equipment, and particularly relates to a connecting structure of a framework and a primary elastic device of a bogie.

Background

In a railway vehicle installation, a tie spring device includes a positioning rocker arm and a tie spring set. A series of steel spring sets are installed between the framework and the positioning rotating arm in a vertical compression state and used for damping vibration of the framework and the positioning rotating arm. The positioning rotating arm is provided with a rubber node; the rubber node comprises positioning blocks protruding from the left side and the right side of the positioning rotating arm. And vertical positioning grooves which correspond to the positioning blocks one to one are arranged on the framework. In the prior art, the positioning block is embedded into the vertical positioning groove, and the vertical positioning groove are fixed by using a vertical fixing bolt.

When the vehicle advances, the axle and the bearing axle box drive the positioning rotating arm to horizontally pull, the positioning rotating arm horizontally pushes or pulls the framework through the rubber node, and the framework longitudinally guides the carriage to horizontally move through the carriage supporting surface. In the traction mode, the fixing bolt can be subjected to transverse shearing force to break, and serious potential safety hazard is brought to vehicle safety.

Disclosure of Invention

To solve the above problems, the present invention provides a connection structure of a frame and a tie-elastic device of a bogie, in which a fixing bolt is not subjected to a transverse shear force and is easily assembled and disassembled.

The technical scheme is as follows: the invention provides a connecting structure of a framework and a primary elastic device of a bogie, wherein the primary elastic device comprises a positioning rotating arm positioned below the framework; the inner end of the positioning rotating arm is provided with a rubber node which comprises positioning blocks protruding from the left side and the right side of the positioning rotating arm; the framework is provided with vertical positioning grooves which correspond to the positioning blocks one by one;

the positioning block is embedded and fixed in the vertical positioning groove in an interference fit manner; a vertical threaded through hole is formed in the positioning block; the bottom of the vertical positioning groove is provided with a threaded blind hole coaxial with the threaded through hole;

the fixing bolt is also included; and the fixing bolt is screwed into the threaded blind hole from the lower part of the positioning block to press and fix the rubber node and the positioning rotating arm.

Furthermore, the positioning block is a cuboid and comprises two parallel vertical surfaces which are arranged in the front-back direction; and the two vertical surfaces are in interference fit with the corresponding contact surfaces of the vertical positioning grooves.

Furthermore, the interference magnitude of the corresponding contact surfaces of the two vertical surfaces and the vertical positioning groove is 0.04-0.1 mm.

Further, the diameter of the threaded through hole is larger than that of the threaded blind hole.

Furthermore, a node mounting hole is formed in the positioning rotating arm; the rubber node comprises a mandrel and a rubber sleeve which is vulcanized and fixed in the middle of the mandrel; the rubber sleeve is arranged between the middle part of the mandrel and the node mounting hole in an interference manner; and two end parts of the mandrel are protruded at two sides of the positioning rotating arm to form positioning blocks.

Furthermore, the elastic device also comprises a steel spring set; the steel spring group is positioned at the outer end of the positioning rotating arm, is arranged between the framework and the positioning rotating arm in a vertical compression state, and is used for damping vibration of the framework and the positioning rotating arm.

Has the advantages that: according to the invention, the positioning blocks of the rubber nodes are embedded and fixed in the vertical positioning grooves in an interference fit manner, so that the horizontal acting force of the positioning rotating arm and the framework is transmitted through the rubber nodes, and the fixing bolt is not subjected to transverse shearing force; in addition, through the vertical thread through hole formed in the positioning block, when the positioning rotating arm is disassembled, the rubber node can be ejected out of the vertical positioning groove embedded in the interference fit mode through the bolt only screwed in the thread through hole by the thread acting force, and the disassembly is convenient.

Drawings

FIG. 1 is a schematic view of a connection structure according to the present invention;

FIG. 2 is a schematic structural view of the truck of the present invention;

fig. 3 is a schematic structural view of a positioning rotating arm of the present invention.

Detailed Description

As shown in fig. 1, the present invention provides a connection structure of a frame of a bogie and a tie-elastic device, the tie-elastic device including a positioning boom 2 located below the frame 1; the inner end of the positioning rotating arm 2 is provided with a rubber node.

As shown in fig. 2, a node mounting hole is formed in the positioning rotating arm 2; the rubber node comprises a mandrel and a rubber sleeve which is vulcanized and fixed in the middle of the mandrel; the rubber sleeve is arranged between the middle part of the mandrel and the node mounting hole in an interference manner; two ends of the mandrel are protruded at two sides of the positioning rotating arm 2 to form a positioning block 3. And vertical positioning grooves which correspond to the positioning blocks 3 one by one are arranged on the framework 1.

In this embodiment, the positioning block 3 is a rectangular parallelepiped and includes two parallel vertical surfaces arranged in the front-rear direction. Because the positioning block 3 is mainly used for transmitting the horizontal acting force of the positioning rotating arm 2 and the framework 1, only two vertical surfaces which are arranged in the front-back direction need to be in interference fit with corresponding contact surfaces of the vertical positioning grooves. The length of the left and right directions of the positioning block 3 can be longer than the length of the left and right directions of the vertical positioning groove, the positioning difficulty during assembly is reduced, and the phenomenon that the positioning block is too tight in matching and difficult to assemble and disassemble is prevented. The interference magnitude of the two vertical surfaces and the corresponding contact surfaces of the vertical positioning grooves is 0.04-0.1 mm.

The positioning block 3 is embedded and fixed in the vertical positioning groove in an interference fit manner; a vertical threaded through hole 4 is formed in the positioning block 3; the bottom of the vertical positioning groove is provided with a threaded blind hole which is coaxial with the threaded through hole 4; also comprises a fixing bolt 5; and the fixing bolt 5 is screwed into the threaded blind hole from the lower part of the positioning block 3 to press and fix the rubber node and the positioning rotating arm 2. In order to prevent the threaded through-hole 4 from influencing the screwing-in of the fixing bolt 5, the diameter of the threaded through-hole 4 is larger than that of the threaded blind hole.

The elastic device also comprises a steel spring set 6; the steel spring assembly 6 is positioned at the outer end of the positioning rotating arm 2, is arranged between the framework 1 and the positioning rotating arm 2 in a vertical compression state, and is used for damping vibration of the framework 1 and the positioning rotating arm 2.

As shown in figure 3, the bogie using the invention is embedded and fixed in the vertical positioning groove in an interference fit manner through the positioning block 3 of the rubber node, so that the horizontal acting force of the positioning rotating arm 2 and the framework 1 is transmitted through the rubber node, and the fixing bolt 5 cannot be subjected to transverse shearing force.

When in disassembly, the fixing bolt 5 is disassembled, and then the technological rod with the specification smaller than the diameter of the threaded blind hole is inserted from the threaded through hole 4 until the technological rod is pushed to the bottom of the threaded blind hole; the length of the technological rod is required to be greater than the depth of the threaded blind hole and smaller than the sum of the depths of the threaded blind hole and the threaded through hole 4; in actual operation, the length of the process rod is slightly longer than the depth of the threaded blind hole.

And finally, screwing the process bolt with the specification consistent with that of the threaded through hole 4 into the threaded through hole 4, continuously screwing the process bolt after the process bolt props against the process rod, and separating the positioning block 3 from the framework 1 by utilizing the thread acting force.

The structure reduces the labor intensity of separating the rubber node from the framework 1, and can quickly and conveniently realize the disassembly operation of the positioning rotating arm 2.