CN113774729A

CN113774729A - Turnout roller device

Info

Publication number: CN113774729A
Application number: CN202111075049.XA
Authority: CN
Inventors: 要志强; 苏杰; 张刚; 秦雪刚; 张向祎
Original assignee: China Railway Baoji Bridge Group Co Ltd; China Railway Baoji Machinery Co Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd; China Railway Baoji Machinery Co Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-12-10

Abstract

The turnout roller device comprises a roller body frame and a roller body arranged in the roller body frame, wherein the roller body frame is provided with a ballast blocking plate; the roller body consists of a core shaft, a core shaft outer bearing and a bearing outer roller; the shaft end of the mandrel is provided with a milling flat structure; a gasket group is arranged between the milling flat structure and the roller body frame; the gasket group is used for adjusting the height of the roller body and limiting the displacement of the roller body in the roller body frame. The invention solves the problem that the roller body is easy to be eroded by mud; the shim group is adopted, so that the height of the roller wheel body is effectively prevented from changing, and the stable displacement of the switch rail is ensured; simple structure, stable operation, safety and reliability.

Description

Turnout roller device

Technical Field

The invention belongs to the technical field of relevant parts for moving switch points of track switches, and particularly relates to a turnout roller device.

Background

At present, a switch realizes the conversion of railway track lines through the movement of switch points, and a switch point conversion mechanism needs to overcome conversion resistance in the action of pulling the points. The switch rail conversion resistance comprises two parts of bending counter force generated by the elastic deformation of the switch rail and friction resistance between the switch rail and the supporting base plate, and the switch operation reliability can be improved by reducing the switch conversion resistance. The most direct way to reduce the frictional resistance between the point rail and the support shim is to reduce the coefficient of friction, which is generally done by two types of measures: one is to set antifriction coating between the switch rail and the supporting cushion plate to reduce the sliding friction coefficient, such as oil coating or other antifriction materials, which is simple and effective, but the aging of the rubber elastic element of the turnout base plate can be accelerated by materials such as grease, etc., which affects the service life of the base plate; another type is to change the sliding friction of the switch rail into rolling friction by a special device, such as a turnout roller device, so as to reduce the friction resistance.

In the prior art, the prior turnout roller device has the following disadvantages: (1) the roller device has poor working environment, and the roller body is easy to be eroded by mud; (2) the roller body that uses at present is fixed insecure in running roller frame, and the roller body easily takes place the altitude variation under bearing the action of gravity, influences the stability that the switch rail removed. In view of this, the following improvement is proposed.

Disclosure of Invention

The technical problems solved by the invention are as follows: the turnout roller device is provided, and the problem that a roller body is easily eroded by mud is solved by arranging the ballast blocking plate on the roller body frame; the adoption increases the spacer group at the running roller body, not only can satisfy the altitude mixture control requirement of switch running roller device in the installation, still can prevent that the running roller body height from changing, guarantees the stable displacement of switch rail.

The technical scheme adopted by the invention is as follows: the turnout roller device comprises a roller body frame and a roller body arranged in the roller body frame, wherein the roller body frame is provided with a ballast blocking plate; the roller body consists of a core shaft, a core shaft outer bearing and a bearing outer roller; the shaft end of the mandrel is provided with a milling flat structure; a gasket group is arranged between the milling flat structure and the roller body frame; the gasket group is used for adjusting the height of the roller body and limiting the displacement of the roller body in the roller body frame.

In the above technical solution, further: the mandrel is provided with a boss; the boss is arranged at the outer side of the shaft end of the roller; the lug boss is matched with a retaining shoulder; the roller body frame is separated from the retaining shoulder; a sealing ring is arranged between the inner side of the retaining shoulder and the outer side of the roller.

In the above technical solution, further: the longitudinal section of the retaining shoulder is provided with a first-order lug boss ring structure; the first-order boss ring structure is arranged on the inner side of the shaft end of the retaining shoulder, and a sealing ring is mounted at the boss concave part of the first-order boss ring structure in a matched mode.

In the above technical solution, further: the sealing ring is a V-shaped sealing ring which is provided with two bifurcated lips; one of the forked lips is of a wedge-shaped structure, and the other forked lip is of a right-angled trapezoid structure; the forked lip of the right-angle trapezoid structure is attached to a first-order lug boss ring structure of the adaptive blocking shoulder; the outermost sides of the diverging lips of the wedge-shaped structure are located towards the roller axle end face.

In the above technical solution, further: the roller body frame is fixed by combining a fixing bolt with a Luodi firm anti-loosening washer.

In the above technical solution, further: the roller body frame comprises a single roller body frame and a double roller body frame; a roller body is arranged in the single roller body frame; two axisymmetric roller bodies are arranged in the double roller body framework.

In the above technical solution, further: the ballast blocking plate and the roller body frame are vertically welded and fixedly connected with each other to form a whole or are integrally formed to obtain the finished product; axially symmetrical avoiding bevel edges are formed at the outer side of the ballast retaining plate body; the inclination angle alpha of the avoidance bevel edge is 20-30 degrees; the end part of the avoiding bevel edge is provided with a circular arc chamfer.

In the above technical solution, further: the bearing is a composite self-lubricating bearing.

Compared with the prior art, the invention has the advantages that:

1. the turnout roller device can well protect the roller body from being eroded by mud through the ballast blocking plate; the tiny fragments of stone, coal, etc. board structure that keeps off of physics protection makes the running roller physical stamina enough maintain under clean environment life-span lasting.

2. The gasket group adjusts the height position of the roller body through the change of the number and the thickness of the gaskets, simultaneously limits the movement of the roller body in the roller body frame, ensures that the roller body is firmly fixed, does not have height change under the action of bearing gravity, and ensures that a turnout can stably run through the movement of a switch point.

3. The core shaft of the roller body is designed in a step mode, and the boss of the core shaft can be provided with the retaining shoulder, so that the roller and the retaining shoulder are effectively prevented from being clamped; the mandrel end is milled flat, and the combined action of the gasket group can fix the position of the mandrel firmly, prevent the roller body from displacing in the frame and ensure the roller body to roll and rub for a long time and stably run.

4. The invention adopts the combined working function of the fixing bolt and the Luodi firm anti-loose washer, avoids the bolt loosening phenomenon of the turnout roller device in the use process, and has reliable and stable use and durable operation.

Drawings

FIG. 1 is a schematic view of a turnout single roller assembly of the present invention;

FIG. 2 is a side view of FIG. 1 in accordance with the present invention;

FIG. 3 is a top view of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic view of a roller body structure according to the present invention;

FIG. 5 is a front view of the spindle in the roller body of the present invention;

FIG. 6 is a side view of the mandrel of FIG. 5 in accordance with the present invention;

FIG. 7 is a front view of the single roller body frame of FIG. 1 in accordance with the present invention;

FIG. 8 is a cross-sectional view A-A of FIG. 7;

FIG. 9 is a top view of FIG. 7;

FIG. 10 is a schematic view of the turnout dual-roller device of the present invention;

FIG. 11 is a schematic view of a ballast blocking plate structure of the turnout double-roller device shown in FIG. 10;

FIG. 12 is a side view of FIG. 10;

FIG. 13 is a schematic view of a twin roller frame of the present invention;

FIG. 14 is a cross-sectional view A-A of FIG. 13;

FIG. 15 is a top view of FIG. 13;

FIG. 16 is a schematic view of the present invention in use;

in the figure: 1-roller body frame, 2-roller body and 3-ballast blocking plate; 201-mandrel, 202-bearing, 203-roller; 4-milling a flat structure, 5-gasket group, 6-boss, 7-shoulder and 8-sealing ring; 701-a first-order lug boss ring structure; 801-wedge structure, 802-right trapezoid structure; 9-fixing the bolt; 101-single roller body frame, 102-double roller body frame; 301-avoiding bevel edge, 302-arc chamfering; 10-stock rail, 11-point rail, 12-roller slide plate, 13-turnout roller device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 16 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The turnout roller device (shown in figures 1 and 10) comprises a roller body frame 1 and a roller body 2 arranged in the roller body frame 1.

The roller body frame 1 is provided with a ballast blocking plate 3. The ballast blocking plate 3 is used for blocking slurry and preventing the slurry from eroding the roller body 2.

(as shown in fig. 2, 8, 11 and 14), the turnout roller device 13 of the invention can well protect the roller body 2 from being eroded by mud through the ballast blocking plate 3; the utility model provides a 3 structures of fender tiny fragments of stone, coal, etc. of physics protection for roller body 2 can maintain under clean environment and use, and the life-span is lasting. Through keeping off tiny fragments of stone, coal, etc. board 3, can also effectively keep off roller body 2 and roll obstructed, avoid roller body coefficient of friction's increase, guarantee roller body 2 and effectively reach the purpose that reduces conversion frictional resistance.

(as shown in fig. 4, 5 and 6), the roller body 2 is composed of a core shaft 201, a bearing 202 outside the core shaft 201 and a roller 203 outside the bearing 202.

In the above embodiment, further: the bearing 202 is a compound self-lubricating bearing.

Wherein the composite means that the self-lubricating bearing is preferably compounded by high-quality carbon structural steel materials and spherical bronze powder materials. The composite self-lubricating bearing is oil-free lubrication or less oil lubrication, and can be maintained without or with less maintenance when in use. Meanwhile, the composite self-lubricating bearing has the advantages of good wear resistance, small friction coefficient and long service life. Meanwhile, the bearing has proper elastoplasticity, and can distribute stress on a wider contact surface and improve the bearing capacity of the bearing. 4, the static and dynamic friction coefficients are similar, thereby ensuring the working precision of the machine. Meanwhile, the vibration of the machine can be reduced, the noise is reduced, the pollution is prevented, and the labor condition is improved. In the operation process, the transfer film can be formed to play a role in protecting the grinding shaft. The thin-wall structure of the composite self-lubricating bearing is light in weight and can reduce the mechanical volume. The back of the material can be used in corrosive medium due to electroplating of other metals; is suitable for the sliding part between the roller 203 and the mandrel 201.

The shaft end of the mandrel 201 is provided with a milling flat structure 4; the milling flat structure 4 mills flat on one side surface of the shaft end of the mandrel, and the milling flat area is smaller than one third of the shaft end area of the mandrel (refer to fig. 5 and 6). When the milling device is used, the milling flat structure 4 is arranged towards the lower bottom surface of the inner side of the roller body frame 1 mandrel installation position. A gasket group 5 is arranged between the milling flat structure 4 and the roller body frame 1; the shim set 5 is used for both heightening the roller body 2 and limiting the displacement of the roller body 2 in the roller body frame 1.

According to the invention, the gasket group 5 adjusts the height position of the roller body 2 through the change of the number and the thickness of the gaskets, and simultaneously limits the movement of the roller body 2 in the roller body frame 1, so that the roller body 2 is firmly fixed and cannot change in height under the action of bearing gravity, and the stable movement and the stable operation of a turnout through a point rail of a point switch are ensured.

(as shown in fig. 1), therefore, the design of the gasket group 5 of the core shaft 201 can not only meet the height requirement of the turnout roller device in the installation process, but also solve the problem that the roller body 2 is not fixed firmly and is easy to adjust the height change under the action of bearing gravity.

In the above embodiment, further: the mandrel 201 is provided with a boss 6 (as shown in fig. 6); the boss 6 is arranged at the outer side of the shaft end of the roller 203; the boss 6 is matched with a retaining shoulder 7; the roller 203 is separated by the retaining shoulder 7, and meanwhile, the retaining shoulder 7 also separates the roller body frame 1; a sealing ring 8 (combined with figures 1 and 4) is arranged between the inner side of the retaining shoulder 7 and the outer side of the roller 203.

The mandrel body 2 of the invention has the advantages that the mandrel 201 is designed in a step form, the boss 6 of the mandrel 201 is used for installing the shoulder 7, and the boss 6 effectively prevents the roller 203 from being locked with the shoulder 7; the end part of the mandrel 201 is milled flat, the milling flat structure 4 is combined with the combined action of the gasket group 5 at the bottom of the milling flat structure 4, the position of the mandrel 201 can be fixed firmly, the roller body 2 is prevented from displacing in the frame, and the rolling friction of the roller body is ensured to run stably for a long time. Therefore, the mandrel 201 is in a step form, the roller 203 and the retaining shoulder 7 can be prevented from being clamped, the end of the mandrel 201 is milled flat, and the mandrel 201 can be fixed firmly. Simultaneously, combine the combined action of sealing washer 8, further effectively prevent roller body 2 stained or card extremely.

In the above embodiment, further: a first-order lug boss ring structure 701 is arranged outside the longitudinal section of the retaining shoulder 7; the boss depth of the first-order boss ring structure 701 is matched with the thickness of the sealing ring 8; the outermost periphery of the first-order boss ring structure 701 has an outer diameter equal to the outer diameter of the roller body 203. The first-order boss ring structure 701 is located at the inner side of the shaft end of the retaining shoulder 7 to prevent outside sludge from polluting the roller body 2, and the sealing ring 8 is installed at the boss concave part of the first-order boss ring structure 701 in a matched mode.

(see fig. 1) in the above embodiment, further: the sealing ring 8 is a V-shaped sealing ring which is provided with two bifurcated lips; one of the bifurcated lips is a wedge-shaped structure 801 and the other bifurcated lip is a right-angled trapezoidal structure 802; the forked lips of the right-angle trapezoid structure 802 fit with the first-order boss ring structure 701 of the adapter shoulder 7; the outermost sides of the diverging lips of wedge 801 are disposed toward the axial end face of roller 203.

The V-shaped sealing ring has the functions of packing and sealing, has good sealing performance, allows a certain amount of eccentric load and eccentric motion, resists impact pressure and is durable.

(as shown in fig. 2 and 11) in the above embodiment, further: the roller body frame 1 is fixed by combining a fixing bolt 9 with a Luodi lock washer (not shown in figure 2).

The fixed bolt 9 is adopted to be combined with the Luo Di firm anti-loosening washer to work together, so that the phenomenon of bolt loosening of the turnout roller device in the use process is avoided, and the device is reliable and stable to use and runs durably.

In the above embodiment, further: the roller body frame 1 comprises a single roller body frame 101 (fig. 3) and a double roller body frame 102 (fig. 13); a roller body 2 is arranged in the single roller body frame 101; two axisymmetric roller bodies 2 are arranged in the double-roller body frame 102, and are axisymmetrically arranged, uniformly stressed and stably operated.

In the above embodiment, further: the ballast blocking plate 3 and the roller body frame 1 are vertically welded and fixedly connected with each other to form a whole or are integrally formed to obtain the finished product; the outer side of the plate body of the ballast blocking plate 3 is provided with axisymmetric avoidance bevel edges 301; the inclination angle alpha of the avoiding inclined edge 301 is 20-30 degrees; an arc chamfer 302 is arranged at the end part of the avoiding bevel edge 301.

The avoiding bevel 301 serves to avoid interference with the mounting of other components. And the arc chamfer 302 effectively prevents the frame from colliding and damaging the ballast plate.

The working principle of the invention is as follows: as shown in fig. 16, the installation of the switch roller assembly 13 of the present invention is shown as a whole on a switch. In this embodiment, the switch roller device 13 is installed on the switch roller slide plate 12, and the switch roller slide plate 12 is installed on the switch tie. The turnout roller device 13 comprises a turnout double-roller device (figure 10) and a turnout single-roller device (figure 1). Whichever switch roller device 13 all installs in switch tongue 11 region, and the road length direction along the line is installed according to certain number's switch tie interval in pairs, sets up the two roller device of switch at the tongue 11 pointed end usually, sets up switch single roller device thereafter, because the most advanced displacement volume is big, and the stroke that switch single roller device provided is not enough, consequently chooses for use switch two roller device in necessary position.

The turnout roller device 13 realizes the conversion of railway track lines through the movement of the switch point rail 11, when the point rail 11 is in a close contact state, namely a working state, the turnout roller device 13 is not contacted with the point rail 11, a clearance of 1-2 mm is formed between the turnout roller device and the edge corner of the bottom edge of the point rail 11, and the point rail 11 is supported by a sliding bed platform; when the closely-attached point rail 11 is subjected to repulsion-separation conversion, the roller 203 of the turnout roller device 13 lifts the rail bottom of the point rail 11 and supports the bottom of the point rail 11, and at the moment, the point rail 11 has no vertical load, so that the sliding friction between the rail bottom of the original point rail 11 and a sliding bed table is converted into the rolling friction between the rail bottom of the point rail 11 and the roller 203, and the transfer friction coefficient of the point rail 11 is greatly reduced, so that the purpose of reducing the conversion resistance is achieved; when the switch rail 11 is switched to the right position and is in the close state again, the rail bottom of the switch rail 11 is separated from the roller and falls onto the table board of the sliding bed, and the whole railway track line is installed and replaced at the moment.

In conclusion, the turnout roller device is simple in structure, has a roller anti-fouling function, is free of shaking displacement in the use process, is adjustable in height, has an anti-blocking function with the stop shoulder, is stable in structural support, and is safe and reliable to operate.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. Turnout roller device includes roller body frame (1) and installs roller body (2) in roller body frame (1), its characterized in that: the roller body frame (1) is provided with a ballast blocking plate (3); the roller body (2) consists of a mandrel (201), a mandrel (201) outer bearing (202) and a bearing (202) outer roller (203); the shaft end of the mandrel (201) is provided with a milling flat structure (4); a gasket group (5) is arranged between the milling flat structure (4) and the roller body frame (1); the gasket group (5) is used for heightening the roller body (2) and limiting the displacement of the roller body (2) in the roller body frame (1).

2. The switch roller assembly as claimed in claim 1, wherein: the mandrel (201) is provided with a boss (6); the boss (6) is arranged at the outer side of the shaft end of the roller (203); the lug boss (6) is matched with a retaining shoulder (7); the roller body frame (1) is separated by the retaining shoulder (7) while the roller (203) is separated by the retaining shoulder (7); and a sealing ring (8) is arranged between the inner side of the retaining shoulder (7) and the outer side of the roller (203).

3. The switch roller assembly as claimed in claim 2, wherein: a first-order lug boss ring structure (701) is arranged outside the longitudinal section of the retaining shoulder (7); the first-order boss ring structure (701) is located on the inner side of the shaft end of the retaining shoulder (7), and the boss concave part of the first-order boss ring structure (701) is matched with and mounted on the sealing ring (8).

4. The switch roller assembly as claimed in claim 2 or 3, wherein: the sealing ring (8) is a V-shaped sealing ring which is provided with two forked lips; one of the bifurcated lips is wedge-shaped (801) and the other bifurcated lip is right-angled trapezoid (802); the forked lips of the right-angle trapezoid structure (802) are fitted with a first-order boss ring structure (701) of the matching retaining shoulder (7); the outermost sides of the forked lips of the wedge-shaped structure (801) are arranged towards the axial end face of the roller (203).

5. The switch roller assembly as claimed in claim 1, wherein: the roller body frame (1) is fixed by combining a fixing bolt (9) with a Luodi firm anti-loosening washer.

6. The switch roller assembly as claimed in claim 1, 2 or 5, wherein: the roller body frame (1) comprises a single roller body frame (101) and a double roller body frame (102); a roller body (2) is arranged in the single roller body frame (101); two axisymmetric roller bodies (2) are arranged in the double roller body framework (102).

7. The switch roller assembly as claimed in claim 1, wherein: the ballast blocking plate (3) and the roller body frame (1) are mutually vertically welded and fixedly connected into a whole or are integrally formed; the outer side of the plate body of the ballast blocking plate (3) is provided with axisymmetric avoidance bevel edges (301); the inclination angle alpha of the avoiding oblique edge (301) is 20-30 degrees; and an arc chamfer (302) is arranged at the end part of the avoiding bevel edge (301).

8. The switch roller assembly as claimed in claim 1, wherein: the bearing (202) is a composite self-lubricating bearing.