WO2023116053A1

WO2023116053A1 - Pivot type movable point frog friction reduction device

Info

Publication number: WO2023116053A1
Application number: PCT/CN2022/117128
Authority: WO
Inventors: 崔琨喨; 柳亚楠; 汤铁兵; 孙野; 赫哲; 温悦; 杨胡龙; 杨奕; 贾鹏
Original assignee: 中铁高新工业股份有限公司; 中铁山桥集团有限公司
Priority date: 2021-12-22
Filing date: 2022-09-05
Publication date: 2023-06-29
Also published as: CN114263073A

Abstract

A pivot type movable point frog friction reduction device. A pivot spacer iron (1) is fixedly arranged between a long point rail and a short point rail, the pivot spacer iron (1) is fixedly provided with a bearing device (2) downwards, and the bearing device (2) is composed of a bearing housing and a rotating shaft rotatably connected to the bearing housing; a base plate is fixedly provided with a positioning table (3) corresponding to the bearing device (2), a positioning key (4) is fixedly arranged on an inner side of the positioning table (3), and a positioning slot (12) that matches the positioning key (4) is provided in a side face of the bearing device (2); and after the friction reduction device is mounted, the bearing device (2) is embedded into the positioning table (3), and the positioning key (4) is embedded into the positioning slot (12). Sliding friction generated when a long and short point rail assembly moves is changed into rolling friction of a bearing by means of the bearing device (2), so that the switching resistance is reduced; and the structure of the friction reduction device is simple, and installation is convenient.

Description

A Pivot Type Movable Frog Antifriction Device

technical field

The invention relates to the technical field of turnouts, and in particular provides a pivot-type movable core frog friction reducing device.

Background technique

The pivotal movable center rail frog is composed of left wing rail, right wing rail, left fork heel tip rail, right fork heel tip rail, long center rail, and short center rail. The long and short core rail components move left and right to eliminate harmful spaces. When the electric rotary machine is moved, the long and short core rail components rotate around the pivot. The pivot structure of the existing pivot movable center frog is shown in Figure 1. The cylindrical shaft is in rigid contact with the platen, and the force of the plate is relatively large. Larger sliding frictional resistance leads to larger plate power, which affects the service life of the switch machine.

Contents of the invention

Aiming at the problems of large conversion force and serious wear and tear of the long and short center rail components of the pivot movable center rail frog in the prior art, the present invention provides a pivot type movable center rail frog with simple structure, small friction force and reliable force bearing Anti-friction device.

A pivot type movable core rail frog friction reduction device, a pivot spacer iron is fixedly arranged between the long center rail and the short center rail, and the pivot spacer iron is fixedly provided with a bearing device downward, and the bearing device consists of The bearing seat and the rotating shaft connected to the bearing seat in rotation; the backing plate is fixedly provided with a positioning platform corresponding to the bearing device, and a positioning key is fixedly provided on the inner side of the positioning platform, and a positioning key matching the positioning key is provided on the side of the bearing device The positioning slot; after the friction reducing device is installed, the bearing device is inserted into the positioning platform, and the positioning key is inserted into the positioning slot.

Further, the pivot spacer is fixedly connected to the bearing device through a connecting plate.

Further, the connecting plate is provided with a groove for the rotation shaft to be inserted into.

Further, the top of the connecting plate is provided with a limiting protrusion, and the pivot spacer is correspondingly provided with a limiting through slot, the connecting plate is fixedly connected with the pivot spacer through bolts, and the limiting protrusion is embedded In the limiting through groove.

Further, the pivot spacer is fixedly connected to the long core rail and the short core rail through bolts on both sides respectively, and anti-rotation grooves are provided at corresponding bolt fixing positions of the long core rail and the short core rail.

The invention uses the bearing device to change the sliding friction when moving the long and short core rail components into the rolling friction of the bearing, which reduces the switching resistance, has a simple structure and is easy to install, and can be applied to the stringent requirements of a frog with a movable pivot.

Description of drawings

Fig. 1 is a schematic diagram of the pivot structure of an existing pivot movable frog;

Fig. 2 is a schematic diagram of the installation structure of the pivot type movable frog friction reducing device;

Fig. 3 is a schematic diagram of the main view of the pivot type movable frog friction reducing device;

Fig. 4 is a top view structural schematic diagram of a pivot type movable frog friction reducing device;

Fig. 5 is a three-dimensional schematic diagram of a connecting plate and a bearing device;

Fig. 6 is a schematic plan view of the pivot spacer and the connecting plate;

Fig. 7 is a schematic plan view of the pivot spacer iron;

Fig. 8 is a schematic diagram of the pivot structure of the pivot movable frog of the present invention.

Explanation of reference signs: 1. Pivot spacer iron; 2. Bearing device; 3. Positioning platform; 4. Positioning key; 5. Bolt and fastener; 6. Anti-rotation groove; 7. Groove; 9. Connecting plate ; 10. Limit protrusion; 11. Limit through slot; 12. Positioning slot.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

A pivot type movable core rail frog friction reduction device, as shown in Figure 1, a pivot spacer iron 1 is fixedly arranged between the long center rail and the short center rail, and the pivot spacer iron is fixedly provided with a bearing downward device 2.

The bearing device 2 is composed of a bearing seat and a rotating shaft that is rotatably connected to the bearing seat; the backing plate is fixedly provided with a positioning platform 3 corresponding to the bearing device, and a positioning key 4 is fixedly provided on the inside of the positioning platform, and the side of the bearing device A positioning groove 12 matching the positioning key is provided; after the friction reducing device is installed, the bearing device is inserted into the positioning platform, and the positioning key is inserted into the positioning slot, as shown in Fig. 3-5.

The electric rotating machine moves the long and short core rail components to move left and right, and the long and short core rail components rotate around the pivot shaft. The bearing device converts the original sliding friction into the rolling friction of the bearing, which reduces the conversion resistance. At the same time, the structure is simple and the installation is convenient. For the demanding requirements of pivoting movable frogs.

The pivot spacer 1 is fixedly connected to the bearing device 2 through a connecting plate 9 , and the connecting plate 9 is provided with a groove 7 for inserting the rotating shaft, as shown in FIG. 6 . The rotating shaft is embedded in the groove and installed to prevent the bolt from being broken due to excessive shear stress during the rotation of the anti-friction device.

In order to improve the stability of the pivot spacer iron, the pivot spacer iron is fixedly connected to the long core rail and the short core rail through bolts on both sides respectively, and the long core rail and the short core rail are fixed with anti-rotation grooves 6 .

The top of the connecting plate 9 is provided with a limit protrusion 10, and the pivot spacer 1 is correspondingly provided with a limit channel 11, and the connecting plate is fixedly connected with the pivot spacer by bolts, and the position limit Embedded in the limiting through groove to ensure the stability of the connecting plate.

Finally, it should also be noted that the above list is only a specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All deformations that can be directly derived or associated by those skilled in the art from the content disclosed in the present invention should be considered as the protection scope of the present invention.

Claims

A pivot-type movable core rail frog friction reduction device is characterized in that a pivot spacer iron is fixedly arranged between the long center rail and the short center rail, and the pivot spacer iron is fixedly provided with a bearing device downward, so that The bearing device is composed of a bearing seat and a rotating shaft rotatably connected with the bearing seat;

The backing plate is fixedly provided with a positioning platform corresponding to the bearing device, and a positioning key is fixedly provided on the inside of the positioning platform, and a positioning groove matching the positioning key is provided on the side of the bearing device; after the friction reducing device is installed, the bearing device embedded in the positioning table, and the positioning key is embedded in the positioning groove.
The pivot type movable frog friction reducing device according to claim 1, characterized in that, the pivot spacer is fixedly connected to the bearing device through a connecting plate.
The pivotal movable frog friction reducing device according to claim 2, wherein the connecting plate is provided with a groove for the rotating shaft to be embedded in.
According to claim 2, the pivot type movable frog friction reducing device is characterized in that, the top of the connecting plate is provided with a limit protrusion, and the pivot spacer is correspondingly provided with a limit channel, and the connection The plate is fixedly connected with the pivot spacer iron through bolts, and the limiting protrusion is embedded in the limiting through groove.
According to any one of claims 1-4, the pivotal movable core rail frog friction reducing device is characterized in that the pivot spacer is fixedly connected to the long core rail and the short core rail through bolts on both sides respectively , There is an anti-rotation groove at the corresponding bolt fixing place of the long core rail and the short core rail.