阅读说明：本技术 一种滚动接触的转向架轴端接地装置结构 (Rolling contact bogie shaft end grounding device structure ) 是由 魏玉卿 杨慧妮 黄福伟 王金山 姜靓 于 2021-11-04 设计创作，主要内容包括：本发明公开一种滚动接触的转向架轴端接地装置结构,包括轮轴及轮轴端盖,所述轮轴端盖一端与轮轴连接,所述轮轴端盖另一端设置接地结构,所述接地结构包括凹面体、活动体,所述凹面体固定在轮轴端盖上,所述凹面体与活动体两者滚动接触,所述活动体上设置接地线组；所述活动体设置滚柱槽,所述滚柱槽内安装滚柱,所述滚柱与滚柱槽之间设置滚柱压簧；它解决了现有结构摩擦面积大,接触面的摩擦角速度大、结构组成复杂、部件的加工难度大的问题。(The invention discloses a rolling contact bogie shaft end grounding device structure which comprises a wheel shaft and a wheel shaft end cover, wherein one end of the wheel shaft end cover is connected with the wheel shaft, the other end of the wheel shaft end cover is provided with a grounding structure, the grounding structure comprises a concave surface body and a movable body, the concave surface body is fixed on the wheel shaft end cover, the concave surface body and the movable body are in rolling contact, and a grounding wire group is arranged on the movable body; the movable body is provided with a roller groove, a roller is arranged in the roller groove, and a roller pressure spring is arranged between the roller and the roller groove; the structure solves the problems of large friction area, large friction angular speed of a contact surface, complex structure composition and large processing difficulty of parts in the conventional structure.)

1. A rolling contact bogie shaft end grounding device structure comprises a wheel shaft (20) and a wheel shaft end cover (9), wherein one end of the wheel shaft end cover (9) is connected with the wheel shaft (20), the rolling contact bogie shaft end grounding device structure is characterized in that the other end of the wheel shaft end cover (9) is provided with a grounding structure, the grounding structure comprises a concave surface body (1) and a movable body (2), the concave surface body (1) is fixed on the wheel shaft end cover (9), the concave surface body (1) and the movable body (2) are in rolling contact, and a grounding line group (4) is arranged on the movable body (2); the movable body (2) is provided with a roller groove (201), a roller (21) is installed in the roller groove (201), and a roller pressure spring (22) is arranged between the roller (21) and the roller groove (201).

2. The rolling contact bogie shaft end grounding device structure as recited in claim 1, characterized in that the roller (21) is a conical body, the small diameter end of the roller (21) is close to the center of the movable body (2), the roller groove (201) is provided with a circular groove (212) corresponding to the large diameter end of the roller (21), the roller groove (201) is provided with a clamping groove (211) corresponding to the small diameter end of the roller (21), the small diameter of the roller (21) is clamped in the clamping groove (211), the circular groove (212) is provided with a ball (23), and the ball (23) and the large diameter end of the roller (21) form a top ball structure.

3. The rolling contact bogie axle end grounding device structure of claim 1, further comprising a fixed support (5) and a grounding end cover (8), wherein the movable body (2) is movably connected to the fixed support (5), a spring (6) is arranged between the movable body (2) and the grounding end cover (8), one end of the spring (6) is installed on the movable body (2), the other end of the spring is installed on an adjusting block (7), and the adjusting block (7) is movably connected with the grounding end cover (8).

4. The rolling contact bogie shaft end grounding device structure as recited in claim 3, characterized in that the concave body (1) is provided with a circular groove (101) at the center; the edge of activity body (2) sets up a plurality of spacing grooves (201), fixed bolster (5) correspond with spacing groove (201) and set up spacing boss (501), activity body (2) are through spacing boss (501) contact on spacing groove (201) and fixed bolster (5), restriction activity body (2) are at axial removal.

5. The rolling contact bogie shaft end grounding device structure as recited in claim 3, characterized in that a connecting rod (3) is arranged between the movable body (2) and the grounding end cover (8), and the spring (6) is sleeved on the connecting rod (3).

6. The rolling contact bogie shaft end grounding device structure as recited in claim 5, characterized in that the grounding end cover (8) is provided with an adjusting boss (801), the grounding end cover (8) and the adjusting boss (801), the adjusting boss (801) and the adjusting block (7) are connected through an adjusting bolt (10), and the grounding end cover (8) and the adjusting block (7) are both provided with holes for passing through the connecting rod (3).

7. The rolling contact bogie shaft end grounding device structure as claimed in claim 6, characterized in that a plurality of binding posts are uniformly distributed on the movable body (2) on one side plane of the connecting rod (3), one end of the grounding wire group (4) is connected with the binding posts, and the other end is fixed on the fixed bracket (5).

8. The rolling contact bogie shaft end grounding device structure as recited in claim 7, characterized in that the adjusting block (7) is triangular and is in accordance with the adjusting boss (801), and the adjusting block (7) is sealed with the grounding end cover (8) and the movable body (2) connecting shaft through a sealing ring.

9. A rolling contact bogie axle end grounding device structure according to claim 8, characterized in that the movable body (2) and the spring (6) are arranged in a movable body spring groove, the adjusting block (7) and the spring (6) are arranged in an adjusting block spring groove, one end of the spring (6) is clamped in the movable body spring groove, and the other end is clamped in the adjusting block spring groove; and a sealing cover (11) is arranged on the outer side of the adjusting boss (801) and is used for blocking dust and water outside.

10. A method for installing a rolling contact bogie shaft end grounding device structure is characterized by comprising the following specific procedures:

(1) the movable body (2), the roller (21) and the roller compression spring (22) are pre-combined into a whole in advance and then are arranged on the framework through bolts;

(2) the fixed support (5) is formed by welding a flange and a casting, and a hole is formed in the flange;

(3) opening an edge notch, a central hole and a spring clamping groove on the movable body (2), welding a connecting rod (3), welding a grounding wire group (4), and fixing a selected spring (6) in the spring clamping groove;

(4) placing the assembled movable body (2) in a fixed support (5), and fixing an upper grounding wire assembly on an opening of the fixed support (5) through a bolt;

(5) preassembling the adjusting block (7) on the grounding end cover (8);

(6) installing a grounding end cover (8) on a fixed support (5), arranging a sealing ring at the contact position of the grounding end cover (8) and the fixed support (5), and inserting the end head of a connecting rod (3) into square holes of an adjusting block (7) and the grounding end cover (8); one end of the spring (6) is placed in a spring clamping groove of the adjusting block (7);

(7) the pre-assembled parts are fixed on a bogie frame (12); the pretightening force of the spring (6) is adjusted to be proper through an adjusting bolt (10) on the grounding end cover (8); the sealing cover 11 is covered.

Technical Field

The invention belongs to the technical field of machine manufacturing, and particularly relates to a rolling contact bogie shaft end grounding device structure.

Background

The information in this background section is disclosed only to enhance an understanding of the general background of the disclosure and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

The bogie grounding device is effectively grounded through the contact of the wheels and the track, and the wheels rotate at a high speed in the running process of a vehicle, so that the effective contact is carried out between the fixed component of the framework and the rotating component of the wheel shaft, and the reliability of the grounding performance is ensured.

At present, various different structures exist, better application experience is achieved, the grounding requirement can be well met, however, part of devices are complex in structure and multiple in component parts, planes are mostly adopted as contact surfaces of the devices, the contact surfaces can only be placed on the edges of shaft end circular planes in order to meet the requirement of complex structures, the structure enables the angular speed of the contact surfaces during rotation to be large, the abrasion amount in movement is large, and the generated heat is large.

In view of this, the present patent application is specifically proposed.

Disclosure of Invention

The invention aims to provide a rolling contact bogie shaft end grounding device structure, which solves the problems of large friction area, large friction angular speed of a contact surface, complex structure composition and high processing difficulty of components of the conventional structure.

In order to solve the problems, the technical scheme adopted by the invention is as follows: a rolling contact bogie shaft end grounding device structure comprises a wheel shaft and a wheel shaft end cover, wherein one end of the wheel shaft end cover is connected with the wheel shaft, the other end of the wheel shaft end cover is provided with a grounding structure, the grounding structure comprises a concave surface body and a movable body, the concave surface body is fixed on the wheel shaft end cover, the concave surface body and the movable body are in rolling contact, and a grounding wire group is arranged on the movable body; the movable body is provided with a roller groove, a roller is arranged in the roller groove, and a roller pressure spring is arranged between the roller and the roller groove.

The roller is a conical body, the small-diameter end of the roller is close to the center of the movable body, a circular groove is formed in the roller groove and corresponds to the large-diameter end of the roller, a clamping groove is formed in the roller groove and corresponds to the small-diameter end of the roller, the small diameter of the roller is clamped in the clamping groove, a ball is arranged in the circular groove, and a ball ejecting structure is formed by the ball and the large-diameter end of the roller.

The movable body is movably connected to the fixed support, a spring is arranged between the movable body and the grounding end cover, one end of the spring is installed on the movable body, the other end of the spring is installed on the adjusting block, and the adjusting block is movably connected with the grounding end cover.

A circular groove is formed in the center of the concave body; the edge of the movable body is provided with a plurality of limiting grooves, the fixed support and the limiting grooves are correspondingly provided with limiting bosses, and the movable body is contacted with the limiting bosses on the fixed support through the limiting grooves to limit the movable body to move in the axial direction.

A connecting rod is arranged between the movable body and the grounding end cover, and the spring is sleeved on the connecting rod.

The adjusting device comprises a grounding end cover, an adjusting block and a connecting rod, wherein the grounding end cover is provided with an adjusting boss, the grounding end cover is connected with the adjusting boss through an adjusting bolt, and holes are formed in the grounding end cover and the adjusting block and used for allowing the connecting rod to penetrate through.

A plurality of binding posts are uniformly distributed on the plane of one side of the movable body, one end of the grounding wire group is connected with the binding posts, and the other end of the grounding wire group is fixed on the fixed support.

The adjusting block is triangular and is consistent with the adjusting boss in shape, and the adjusting block is sealed with the grounding end cover and the movable body connecting shaft through a sealing ring.

The movable body and the spring are correspondingly arranged in a movable body spring groove, the adjusting block and the spring are correspondingly arranged in an adjusting block spring groove, one end of the spring is clamped in the movable body spring groove, and the other end of the spring is clamped in the adjusting block spring groove.

And a sealing cover is arranged outside the adjusting boss and used for blocking external dust and water.

The invention has the beneficial effects that:

1. the roller is placed on the movable body, the movable body can move along the direction of the wheel shaft to compensate the abrasion loss of the contact surface, the movable body is provided with a roller groove for placing the roller, the roller can rotate around the center of the movable body or independently rotate, when the roller is in contact with a convex surface, the rolling contact can reduce friction and reduce the abrasion loss and heat generated by friction. The grounding device structure is superior to the grounding device structure used on the existing motor train unit vehicle in many aspects such as processing and manufacturing. The wide application can save the economic cost.

2. The invention forms a rolling friction surface by using a line surface contact surface between the roller and the movable body as a friction surface, reduces the generation of friction quantity and friction heat, and prolongs the service life and the maintenance cost of the component.

3. The components of the grounding device are simplified, the design structure is simplified, the processing complexity of the components is reduced, and the labor cost for processing and mounting is saved; the integral grounding device is simple in structural design, convenient to install and detach and low in processing and maintenance cost.

Drawings

FIG. 1 is a schematic representation of the use of the present invention;

FIG. 2 is a schematic illustration of an explosive structure according to the present invention;

FIG. 3 is a schematic view of another angle of the present invention

FIG. 4 is a cross-sectional view of the present invention;

fig. 5 is an enlarged schematic view of a in fig. 4.

1. A concave body; 101. a circular groove; 2. a movable body; 201. a limiting groove; 211. (ii) a 212. (ii) a 3. A connecting rod; 4. a grounding wire tube; 5. fixing a bracket; 6. a spring; 7. an adjusting block; 8. a grounded end cap; 801. adjusting the boss; 9. an axle end cap; 10. adjusting the bolt; 11. a sealing cover; 12. a bogie frame; 15. fastening a bolt; 16. a fourth seal ring; 17. a third seal ring; 18. a first seal ring; 19. a second seal ring; 20. a wheel axle; 21. a roller; 22. a roller compression spring; 23. and a ball.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the following explains the present solution by way of specific embodiments and with reference to the accompanying drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1 to 5, a rolling contact bogie axle end grounding device structure includes an axle 20 and an axle end cover 9, one end of the axle end cover 9 is connected with the axle 20, the other end of the axle end cover 9 is provided with a grounding structure, the grounding structure includes a concave body 1 and a movable body 2, the concave body 1 is fixed on the axle end cover 9, the concave body 1 and the movable body 2 are in rolling contact, and the movable body 2 is provided with a grounding wire group 4; the movable body 2 is provided with a roller groove 201, a roller 21 is arranged in the roller groove 201, and a roller pressure spring 22 is arranged between the roller 21 and the roller groove 201.

The roller 21 is a conical body according to the shape of the circular movable body 2, the small diameter end of the roller 21 is close to the center of the movable body 2, the roller groove 201 is provided with a circular groove 212 corresponding to the large diameter end of the roller 21, the roller groove 201 is provided with a clamping groove 211 corresponding to the small diameter end of the roller 21, the small diameter of the roller 21 is clamped in the clamping groove 211, a ball 23 is arranged in the circular groove 212, the ball 23 and the large diameter end of the roller 21 form a ball-ejecting structure, and the roller 21 can roll by itself or rotate integrally in the groove.

The roller groove 201 is an inclined surface, and has two ends with notches, the inner side notch close to the center of the movable body 2 is square, and the outer notch is circular.

Specifically, the convex body 1 and the movable body 2 are in rolling contact with each other, and the spring 6 gives a predetermined pressing force to the movable body 2, ensuring intimate contact therebetween.

Specifically, the bogie frame 12 transfers current to the wheels through spherical contact at the axle ends of the axles 20, and the grounding function is achieved through contact between the wheels and the rails.

The concave body 1 at the shaft end of the wheel shaft 20 rotates at a high speed during operation, the bogie frame 12 and the movable body 2 are relatively static, and the spherical surface contact between the rotating concave body 1 and the movable body 2 forms frictional contact with a certain friction amount; the spring 6 gives a prescribed pressing force to the movable body 2, ensuring intimate contact between the two. The adjusting bolt 10 can adjust the pre-tightening force of the spring 6; the concave surface body 1 in spherical contact is fixed on the wheel shaft 20, so that the friction compensation is required to be completed by the movable body 2, the movable body 2 needs to have an axial moving function and needs an even pressing force to ensure that the concave and convex surface bodies can be in contact, the movable body 2 is provided with the circular spring 6, the spring 6 is pre-provided with a pretightening force, and the pretightening force of the spring needs to be adjusted along with the release of the pretightening force.

Still include fixed bolster 5 and ground connection end cover 8, 2 swing joint of activity body are on fixed bolster 5, set up spring 6 between activity body 2 and the ground connection end cover 8, 6 one end of spring are installed on activity body 2, and the other end is installed on adjusting block 7, adjusting block 7 and 8 swing joint of ground connection end cover.

Specifically, the movement of the movable body 2 in the axial direction of the wheel axle 20 is limited by the fixed bracket 5 fixedly mounted on the bogie frame 12, and is not released from the fixed bracket 5 by the spring force. A welding cable is installed between the fixed bracket 5 and the movable body 2, so that the conduction of current between the fixed bracket and the movable body can be ensured.

A circular groove 101 is formed in the center of the concave body 1; the edge of the movable body 2 is provided with a plurality of limiting grooves 201, the fixed support 5 and the limiting grooves 201 are correspondingly provided with limiting bosses 501, and the movable body 2 is contacted with the limiting bosses 501 on the fixed support 5 through the limiting grooves 201 to limit the movable body 2 to move in the axial direction.

A circular groove 101 is formed in the center of the concave body 1; the edge of the movable body 2 is provided with a plurality of limiting grooves 201, the fixed support 5 and the limiting grooves 201 are correspondingly provided with limiting bosses, and the movable body 2 is contacted with the limiting bosses on the fixed support 5 through the limiting grooves 201 to limit the movable body 2 to move in the axial direction. Specifically, the limiting boss corresponds to the limiting groove 201, and blocks the movable body 2 from moving and rotating along the axial direction of the wheel axle 20 after being preassembled.

A welding connecting rod 3 is arranged between the movable body 2 and the grounding end cover 8, and the spring 6 is sleeved on the connecting rod 3.

Specifically, the central part of ground connection end cover 8 and adjusting block 7 all opens the square trompil, and the central point of activity body 2 opens the circular port, and welding connecting rod 3, connecting rod 3 another tip are processed into square shape, pass adjusting block 7 and ground connection end cover 8's connecting rod 3, and the spacing boss on the assistance fixed bolster 5 comes the restriction activity body 2 jointly to rotate along with the rotation of concave surface body 1. And the abrasion condition of the movable body is observed, and the pre-tightening force of the spring can be adjusted in time.

The grounding end cover 8 is provided with an adjusting boss 801, the grounding end cover 8 is connected with the adjusting boss 801 through an adjusting bolt 10, the adjusting boss 801 is connected with the adjusting block 7, and the grounding end cover 8 and the adjusting block 7 are both provided with holes for allowing the connecting rod 3 to pass through.

Specifically, the grounding end cover 8 is fixed on the fixing support 5 through a bolt, the grounding end cover 8 and the fixing support 5 are sealed through a first sealing ring 18, the adjusting block 7 is limited to rotate by the inner triangular adjusting boss 801, the grounding end cover 8 is provided with three adjusting bolts, and the pretightening force of the spring 6 can be adjusted by adjusting the adjusting block 7.

A plurality of binding posts are uniformly distributed on the plane of one side of the movable body 2 on the connecting rod 3, one end of the grounding wire group 4 is connected with the binding posts, and the other end of the grounding wire group is fixed on the fixed support 5.

The fixing bracket 5 is fixed to the bogie frame 12 by a fastening bolt 15 and its fastening member, and is sealed by a second seal ring 19.

The adjusting block 7 is triangular and is consistent with the adjusting boss 801 in shape, and the adjusting block 7, the grounding end cover 8 and the movable body 2 connecting shaft are sealed through a sealing ring.

The movable body 2 is arranged in a movable body spring groove corresponding to the spring 6, the adjusting block 7 is arranged in an adjusting block spring groove corresponding to the spring 6, one end of the spring 6 is clamped in the movable body spring groove, and the other end of the spring is clamped in the adjusting block spring groove.

Specifically, a third sealing ring 17 is arranged between the connecting rod 3 and the adjusting block 7; a fourth sealing ring 16 is arranged between the connecting rod 3 and the grounding end cover 8.

And a sealing cover 11 is arranged outside the adjusting boss 801 and used for blocking dust and water outside.

A pre-assembly installation method for a rolling contact bogie shaft end grounding device structure comprises the following implementation steps:

(1) the movable body 2, the roller 21 and the roller compression spring 22 are pre-combined into a whole in advance and then are arranged on the framework through bolts;

(2) the fixed support 5 is formed by welding a flange and a casting, and a hole is formed in the flange;

(3) opening an edge notch, a central hole and a spring clamping groove of the movable body 2, welding and connecting the edge notch, the central hole and the spring clamping groove 3, welding a grounding wire assembly 4, and fixing a selected spring 6 in the spring clamping groove;

(4) placing the assembled movable body 2 in a fixed support 5, and fixing the upper grounding wire assembly on an opening of the fixed support 5 through a bolt;

(5) the fourth sealing ring 16 and the third sealing ring 17 are preassembled on the adjusting block 7. Preassembling the adjusting block 7 to a triangular boss inside the grounding end cover 8, and aligning square openings;

(6) the grounding end cover 8 is installed on the fixed support 5 through standard parts such as nut gaskets, sealing rings are arranged at the contact part of the grounding end cover 8 and the fixed support 5, and the end head of the connecting rod 3 is inserted into square holes of the adjusting block 7 and the grounding end cover 8. One end of the spring 6 is placed in a spring clamping groove of the adjusting block 7;

(7) the pre-assembled components are bolted to the truck frame 12. The pretightening force of the spring 6 is adjusted to be proper through an adjusting bolt 10 on the grounding end cover 8; the rubber sealing cover 11 is covered.

The above embodiments are preferred embodiments of the present disclosure, but the embodiments of the present disclosure are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present disclosure should be regarded as equivalent replacements within the scope of the present disclosure.