阅读说明：本技术 一种弧形轨道电动平车 (Electric flat carriage with arc-shaped track ) 是由 梅学勤 徐康 魏新平 张尚 张祥 毛剑 禹渐 黄锐 张鹏 刘俊 于 2020-05-20 设计创作，主要内容包括：本发明提供一种弧形轨道电动平车,包括：弧形轨道和电动平车,所述电动平车能够在所述弧形轨道上移动,所述电动平车包括平车台面、主动轴、被动轴、主动轮、第一被动轮和二个第二被动轮,其中,所述主动轴和所述被动轴均设置在所述平车台面的下端,在所述主动轴上安装有所述主动轮和所述第一被动轮,所述主动轮的圆心、所述第一被动轮的圆心和所述弧形轨道的圆心在同一条直线上；二个所述第二被动轮的圆心和所述弧形轨道的圆心在同一条直线上,本发明解决了外弧车轮转速比内弧车轮转速快形成速度差进而导致电动平车不能延弧形轨道运行以及外弧车轮的轮缘与钢轨出现啃轨卡死的技术问题。(The invention provides an electric flat carriage with an arc-shaped track, which comprises: the electric flat carriage comprises a flat carriage table top, a driving shaft, a driven shaft, a driving wheel, a first driven wheel and two second driven wheels, wherein the driving shaft and the driven shaft are both arranged at the lower end of the flat carriage table top; the circle centers of the two second driven wheels and the circle center of the arc-shaped track are on the same straight line, and the invention solves the technical problems that the electric flat carriage cannot extend the operation of the arc-shaped track and the flanges of the outer arc wheels and the steel rail are locked due to the fact that the rotating speed of the outer arc wheels is faster than that of the inner arc wheels to form a speed difference.)

1. The utility model provides an electric flat carriage of arc track which characterized in that includes: an arc-shaped track and an electric flat carriage, wherein the electric flat carriage can move on the arc-shaped track,

the electric flat carriage comprises a flat carriage table surface, a driving shaft, a driven shaft, a driving wheel, a first driven wheel and two second driven wheels, wherein,

the driving shaft and the driven shaft are both arranged at the lower end of the platform surface of the flat car, the driving wheel and the first driven wheel are arranged on the driving shaft,

the driven shaft is provided with two second driven wheels, the driving wheel, the first driven wheel and the two second driven wheels can all travel on the arc-shaped track,

the circle center of the driving wheel, the circle center of the first driven wheel and the circle center of the arc-shaped track are on the same straight line;

the circle centers of the two second driven wheels and the circle center of the arc-shaped track are on the same straight line.

2. The arcuate track electric flat car according to claim 1,

the axial line of the driving shaft and the axial line of the driven shaft are intersected at the circle center of the arc-shaped track,

preferably, an included angle between the axis of the driving shaft and the axis of the driven shaft is α 1, and the included angle α 1 is an acute angle.

3. The arcuate track electric flat car according to claim 1,

the arc-shaped tracks comprise inner arc tracks and outer arc tracks, wherein the inner arc tracks are positioned at the inner sides of the outer arc tracks,

the driving wheel and the second driven wheel are arranged on the outer arc track,

the first driven wheel and the second driven wheel are mounted on the inner arc track.

4. The arcuate track electric flat car according to claim 3,

the included angle between the wheel tread of the driving wheel and the second driven wheel on the outer arc track and the wheel rim is larger than 90 degrees, the included angle between the inner side surface and the outer side surface of the wheel rim is called a wheel rim oblique angle alpha 2, and the wheel rim oblique angle alpha 2 is an acute angle.

5. The arcuate track electric flat car according to claim 3,

and the rims of the first driven wheel and the second driven wheel on the inner arc track are positioned at the outer side of the inner arc track.

6. The arcuate track electric flat car according to claim 1,

when the driving wheel, the first driven wheel and the second driven wheel are arranged at any position of the arc-shaped track, the center lines of the driving wheel, the first driven wheel and the second driven wheel are respectively tangent to the arc-shaped track.

7. The arcuate track electric flat car according to claim 1,

the center line of the driving wheel is perpendicular to a straight line where three points of the circle center of the driving wheel, the circle center of the first driven wheel and the circle center of the arc-shaped track are located;

the center line of the first driven wheel is perpendicular to a straight line where three points of the circle center of the driving wheel, the circle center of the first driven wheel and the circle center of the arc-shaped track are located;

the center lines of the two second driven wheels are respectively perpendicular to the straight lines where the circle centers of the two second driven wheels and the circle center of the arc-shaped track are located.

8. The arcuate track electric flat car according to claim 1,

the electric flat carriage further comprises a driving mechanism used for driving the driving wheel, the driving mechanism comprises a driving motor, a coupler, a speed reducer and a transmission gear, the driving motor is fixedly installed on the flat carriage table board, the driving motor passes through the coupler and the speed reducer is connected, the speed reducer is connected with the transmission gear, and the transmission gear is installed on the driving shaft.

9. The arcuate track electric flat car according to claim 1,

bearing seats are arranged at the two ends of the driving shaft;

bearing seats are also arranged at the two ends of the driven shaft.

10. The arcuate track electric flat car according to claim 1,

the first driven wheel is arranged on the driving shaft through a bearing,

and the two second driven wheels are both arranged on the driven shaft through bearings.

Technical Field

The invention belongs to the field of transportation equipment, and particularly relates to an electric flat car with an arc-shaped track.

Background

The transfer amount from the off-line steel products to the wire finishing of the rolling line in a small bar factory is large, a level car with simple structure, convenient use, easy maintenance and large bearing capacity is needed, the steel products can be transferred only by using a large-radian rail cross-span level car in a limited space due to site restriction, and the general straight-line running cross-span level car cannot meet the running requirement.

The existing electric flat carriage has the following technical problems:

(1) when the cross-over flat car runs along the arc-shaped track, the electric flat car cannot run along the arc-shaped track due to the fact that the arc lengths of the two tracks are different (the inner ring is 2.137m less than the whole-course length of the outer ring track), the rotating speed of the outer ring wheel is faster than that of the inner ring wheel, and a speed difference is formed;

(2) when the outer ring wheel rotates, the phenomenon that the wheel rim and the steel rail are gnawed and clamped is prevented.

The electric flat carriage with the arc-shaped track is needed to solve the problem that the electric flat carriage cannot extend the operation of the arc-shaped track due to the fact that the rotating speed of the outer ring wheel is faster than that of the inner ring wheel to form speed difference; the technical problem that the flanges of the outer ring wheels and the steel rails are stuck due to rail gnawing is solved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an electric flat carriage with an arc-shaped track, which solves the technical problems that the electric flat carriage cannot extend the operation of the arc-shaped track and the flanges of the outer arc wheels and steel rails are gnawed and clamped because the rotating speed of the outer arc wheels is faster than that of the inner arc wheels to form a speed difference.

In order to achieve the purpose, the invention provides the following technical scheme:

an arcuate track electric flat car comprising: the electric flat carriage comprises a flat carriage table board, a driving shaft, a driven shaft, a driving wheel, a first driven wheel and two second driven wheels, wherein the driving shaft and the driven shaft are arranged at the lower end of the flat carriage table board, the driving wheel and the first driven wheel are mounted on the driving shaft, the two second driven wheels are mounted on the driven shaft, the driving wheel, the first driven wheel and the two second driven wheels can all walk on the arc-shaped track, and the circle center of the driving wheel, the circle center of the first driven wheel and the circle center of the arc-shaped track are on the same straight line; the circle centers of the two second driven wheels and the circle center of the arc-shaped track are on the same straight line.

Preferably, the axis of the driving shaft and the axis of the driven shaft intersect at the center of the arc-shaped track.

Preferably, an included angle between the axis of the driving shaft and the axis of the driven shaft is α 1, and the included angle α 1 is an acute angle.

Preferably, the arc track includes inner arc track and outer arc track, and wherein the inner arc track is located the inboard of outer arc track, action wheel and one the second follower is installed on the outer arc track, first follower and one the second follower is installed on the inner arc track.

Preferably, the included angles between the wheel treads of the driving wheel and the second driven wheel on the outer arc track and the wheel rims are both larger than 90 degrees, the included angle between the inner side surface and the outer side surface of the wheel rims is called a wheel rim oblique angle alpha 2, and the wheel rim oblique angle alpha 2 is an acute angle.

Preferably, the rims of the first driven wheel and the second driven wheel on the inner arc track are both located outside the inner arc track.

Preferably, when the driving wheel, the first driven wheel and the two second driven wheels are arranged at any position of the arc-shaped track, the center lines of the driving wheel, the first driven wheel and the two second driven wheels are tangent to the arc-shaped track respectively.

Preferably, the center line of the driving wheel is perpendicular to a straight line where three points of the circle center of the driving wheel, the circle center of the first driven wheel and the circle center of the arc-shaped track are located; the center line of the first driven wheel is perpendicular to a straight line where three points of the circle center of the driving wheel, the circle center of the first driven wheel and the circle center of the arc-shaped track are located; the center lines of the two second driven wheels are respectively perpendicular to the straight lines where the circle centers of the two second driven wheels and the circle center of the arc-shaped track are located.

Preferably, the electric flat carriage further comprises a driving mechanism for driving the driving wheel, the driving mechanism comprises a driving motor, a coupler, a speed reducer and a transmission gear, wherein the driving motor is fixedly installed on the flat carriage table board, the driving motor passes through the coupler and the speed reducer is connected, the speed reducer is connected with the transmission gear, and the transmission gear is installed on the driving shaft.

Preferably, bearing seats are mounted on both ends of the driving shaft; bearing seats are also arranged at the two ends of the driven shaft.

Preferably, the first driven wheel is mounted on the driving shaft through a bearing, and the two second driven wheels are mounted on the driven shaft through bearings.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

the invention overcomes the problem that the wheels can not move forwards due to differential speed by the linkage operation of one driving wheel and three free driven wheels; the invention utilizes the positioning mode of three points and one line of the wheels and the arc-shaped track, and simultaneously increases the rim bevel angle alpha 2 of the driving wheel, so that the rail gnawing does not occur in the running process of the electric flat car, and the electric flat car can be ensured to run on the arc-shaped track stably.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:

FIG. 1 is a schematic view of an arc track simulation of the present invention;

FIG. 2 is a schematic view of the operation of the present invention on an arcuate track;

FIG. 3 is a schematic view of the wheel mounting of the driving and driven shafts of the present invention;

FIG. 4 is a schematic view of a modified structure of the driving wheel of the present invention;

fig. 5 is a schematic structural view of a conventional wheel in the prior art.

The symbols in the figures are as follows:

the driving shaft 1, the driven shaft 2, the driving wheel 3, the bearing seat 4, the first driven wheel 5, the second driven wheel 6, the driving motor 7, the coupler 8, the speed reducer 9, the transmission gear 10, the inner arc rail 11, the outer arc rail 12, the No. 1 door 13, the brick wall 14 and the No. 2 door 15.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.

Referring to fig. 1 to 4, according to an embodiment of the present invention, an electric flatcar with an arc-shaped track is provided, which includes an arc-shaped track and an electric flatcar, and the electric flatcar can move on the arc-shaped track, where the electric flatcar includes a flatcar deck, a driving shaft 1, a driven shaft 2, a driving wheel 3, a first driven wheel 5, and two second driven wheels 6, where the driving shaft 1 and the driven shaft 2 are both disposed at a lower end of the flatcar deck, the driving wheel 3 and the first driven wheel 5 are mounted on the driving shaft 1, the two second driven wheels 6 are mounted on the driven shaft 2, the driving wheel 3, the first driven wheel 5, and the two second driven wheels 6 can all travel on the arc-shaped track, and a center of the driving wheel 3, a center of the first driven wheel 5, and a center of the arc-shaped track are on a same straight line; the circle centers of the two second driven wheels 6 and the circle center of the arc-shaped track are on the same straight line.

The driving wheel 3 is arranged on an outer arc track 12 of the arc track, the first driven wheel 5 is arranged on an inner arc track 11 of the arc track, the two second driven wheels 6 are respectively arranged on the outer arc track 12 and the inner arc track 11, and bearings are additionally arranged between the first driven wheel 5 and the two second driven wheels 6 and wheel shafts (the driving shaft 1 and the driven shaft 2) so that the first driven wheel and the second driven wheels can independently and freely rotate, so that the problem of speed difference of the inner arc wheel and the outer arc wheel is solved.

Referring to fig. 1, the electric flat carriage can transfer steel materials in a limited space between a door No. 1 13 and a door No. 2 15, the door No. 1 13 and the door No. 2 15 being provided on a brick wall 14.

Referring to fig. 2, the axis of the driving shaft 1 and the axis of the driven shaft 2 intersect at the center of the arc track, the included angle between the axis of the driving shaft 1 and the axis of the driven shaft 2 is α 1, and α 1 is an acute angle, so that the problem of rail gnawing is avoided. The selection range of the included angle α 1 is related to the length of the electric flat carriage, that is, the size of the included angle α 1 is proportional to the length of the electric flat carriage, (the size of the included angle α 1 refers to the size of the angle of the included angle α 1), the length of the electric flat carriage is longer, the included angle α 1 is selected to be larger, and the included angle α 1 is smaller, otherwise, the included angle α 1 is the included angle between the straight line AB and the straight line BC in fig. 2. In one embodiment, the included angle α 1 is set to 7 °, and in other embodiments, the included angle α 1 may be set to other angles on the premise of ensuring the stability of the flatcar.

When four wheels (four wheels refer to a driving wheel 3, a first driven wheel 5 and two second driven wheels 6) are arranged at any position of the arc-shaped track, the central lines of the four wheels are respectively tangent to the arc-shaped track, and the central line of the driving wheel 3 is vertical to a straight line (the included angle is 90 degrees) where three points of the circle center of the driving wheel 3, the circle center of the first driven wheel 5 and the circle center of the arc-shaped track are located; the central line of the first driven wheel 5 is vertical to a straight line (the included angle is 90 degrees) where three points of the circle center of the driving wheel 3, the circle center of the first driven wheel 5 and the circle center of the arc-shaped track are located; the central lines of the two second driven wheels 6 are respectively perpendicular to the straight lines (the included angle is 90 degrees) where the three points of the circle centers of the two second driven wheels 6 and the circle center of the arc-shaped track are located. The wheel flanges of the four wheels are symmetrically arranged relative to the arc-shaped rails by the aid of the arrangement, and the problem of rail gnawing caused by inconsistent included angles between the wheel flanges of the wheels and the arc-shaped rails is avoided.

Referring to fig. 4, the included angle between the wheel tread and the wheel rim of two wheels (the driving wheel 3 and the second driven wheel 6) on the outer arc track 12 is greater than 90 °, the included angle between the inner side surface (the surface where the wheel rim is connected with the wheel tread) and the outer side surface of the wheel rim is called as a wheel rim oblique angle α 2, and α 2 is an acute angle. The angle selection range of the wheel flange oblique angle alpha 2 is positively correlated with the curvature of the arc-shaped track, namely the larger the curvature of the arc-shaped track is, the larger the wheel flange oblique angle alpha 2 is, and the smaller the wheel flange oblique angle alpha 2 is. The angular selection range of the rim bevel angle alpha 2 is also related to the size of the wheel diameter, and the larger the wheel diameter alpha 2 is, the larger the wheel diameter is. The angle selection range of the wheel rim oblique angle alpha 2 is preferably between 5 degrees and 45 degrees, the wheel is convenient to manufacture, and the problem of rail gnawing is avoided.

The rims of two wheels (a driving wheel 3 and a second driven wheel 6) on the outer arc track 12 are both positioned at the inner side of the outer arc track 11; the rims of two wheels (a first driven wheel 5 and a second driven wheel 6) on the inner arc track 11 are both positioned at the outer side of the inner arc track 11, the rims of the two wheels on the inner arc track 11 are unfolded along the diameter direction of the wheels, and an angle is naturally formed between the unfolded rims of the wheels and the outer arc surface of the inner arc track 11, so that the phenomenon of rail gnawing is further avoided.

In view of processing universality, the rim bevel angles alpha 2 of four wheels can be made to be 25 degrees, one of the four wheels is used as a driving wheel 3, one of the four wheels is used as a first driven wheel 5, and the other two wheels are used as second driven wheels 6, so that the mounting management is convenient, and the wrong mounting of the wheels is avoided.

Where the angle α 2 is the angle between line EF and line FG in figure 4.

In the invention, the driving wheel 3, the first driven wheel 5 and the two second driven wheels 6 are fixedly arranged on the driving shaft 1 and are arranged on the shaft through bearings, and because the driven wheels (the first driven wheel 5 and the two second driven wheels 6) adopt the mounting mode of the bearings, the driven wheels can independently and freely rotate relative to the driving shaft 1 or the driven shaft 2, and the first driven wheel 5 and the two second driven wheels 6 can be called as driven free wheels, thereby overcoming the problem that the electric flat car cannot advance due to differential speed among the wheels.

Three points of the circle center of the driving wheel 3, the circle center of the first driven wheel 5 and the circle center of the arc-shaped track are arranged on the same straight line, so that the circle center of the wheel on the driving shaft 1 and the circle center of the arc-shaped track form a three-point and one-line positioning mode, and meanwhile, three points of the circle centers of the two second driven wheels 6 and the circle center of the arc-shaped track are arranged on the same straight line, so that the circle center of the wheel on the driven shaft 2 and the circle center of the arc-shaped track form a three-point and one. The three points and the line have the advantage that the electric flat carriage can be ensured to stably run on the arc-shaped track. Then setting the angle of an included angle alpha 1 formed by the intersection of the axis of the driving shaft 1 and the axis of the driven shaft 2 at the center of the arc-shaped track to be 7 degrees, and setting the angle of a rim bevel angle alpha 2 of the driving wheel 3 to be 25 degrees (refer to fig. 5, fig. 5 is a structural schematic diagram of a common wheel in the prior art, and the angle of the rim bevel angle of the wheel is 8 degrees.) so that the angle of the rim bevel angle alpha 2 of the driving wheel 3 is larger than the angle of the rim bevel angle of the common wheel in the prior art; the wheel center and the arc track center are positioned in a three-point and one-line mode and the wheel flange oblique angle alpha 2 is arranged, so that the rail gnawing does not occur in the running process of the electric flat carriage, and the electric flat carriage can stably run on the arc track.

The arrangement of three points and one line of the invention is required to be the central lines of two pairs of wheels (two pairs of wheels mean that the driving wheel 3 and the first driven wheel 5 form one pair, and two second driven wheels 6 form the other pair.) and has significance only by sharing the central point of the arc-shaped track, and the arrangement of three points and one line ensures that the electric flat carriage can stably run on the arc-shaped track.

The electric flat carriage with the arc-shaped track is not only suitable for the arc-shaped track with the included angle of 90 degrees, but also suitable for the arc-shaped track with any radius and any arc length.

Referring to fig. 2, the present invention further provides an arc rail, and a most preferable arc rail includes an inner arc rail 11 (inner ring rail) and an outer arc rail 12 (outer ring rail), wherein the inner arc rail 11 is located inside the outer arc rail 12, wherein the inner arc rail 11 is a 90 ° arc having a radius of 21.32m, and the first driven wheel 5 is mounted on the inner arc rail 11. Wherein the outer arc track 12 is a 90-degree arc with a radius of 22.68m, and the driving wheel 3 is arranged on the outer arc track 12. In this embodiment, the radius value of the inner arc track 11 and the radius value of the outer arc track 12 are the best values in the present invention, and the radius of the inner arc track 11 and the radius of the outer arc track 12 may be selected according to actual situations in other scenarios.

The radius of the inner arc track 11 and the radius of the outer arc track 12 are both based on the layout of the No. 1 door and the No. 2 door, the starting point of the electric flat carriage and the end point of the electric flat carriage.

Referring to fig. 3, the present invention further provides a driving mechanism for driving the driving wheel 3 and four bearing seats 4, wherein the driving mechanism includes a driving motor 7, a coupler 8, a speed reducer 9, and a transmission gear 10, wherein the driving motor 7 is fixedly mounted on a platform of the flatcar, in this embodiment, the platform of the flatcar is used for stacking steel, the driving motor 7 is connected with the speed reducer 9 through the coupler 8, the speed reducer 9 is connected with the transmission gear 10, and the transmission gear 10 is mounted on the driving shaft 1. Two of the bearing blocks 4 are respectively installed on two ends of the driving shaft 1, and the other two bearing blocks 4 are respectively installed on two ends of the driven shaft 2.

The invention provides an embodiment of an electric flat carriage with an arc-shaped track, which comprises the following main technical characteristics and technical parameters:

arc track: the inner arc track 11 with the radius of 21.32m and the outer arc track 12 with the radius of 22.68m are both arcs of 90 degrees and are used for providing a support flat car for the electric flat car.

The included angle alpha 1 formed by the intersection of the axis of the driving shaft 1 and the axis of the driven shaft 2 at the center of the arc-shaped track is 7 degrees;

both wheels (the driving wheel 3 and the second driven wheel 6) on the outer arc rails 12 have a rim bevel angle α 2, α 2 being 25 °.

A driving mechanism: the driving motor 7, the coupling 8, the speed reducer 9 and the transmission gear 10 form a device for outputting torque;

a platform surface of the flat car: used for stacking steel products;

wheel and axle: a driving wheel 3 and three driven free wheels (a first driven wheel 5 and two second driven wheels 6), wherein the three driven wheels independently and freely rotate to eliminate the differential action.

When the arc-shaped track electric flat carriage is applied, a low-voltage track power supply mode is adopted, the arc-shaped track is separated from the conductive track, and the sliding contact line is connected with the conductive track for power supply; the ground step-down transformer control cabinet reduces the 380V three-phase alternating current to 36V three-phase voltage; the voltage is fed to the electric flat car through a sliding contact line which is in contact with a conductive track, and the 36V three-phase voltage is boosted to 380V three-phase alternating-current voltage through a vehicle-mounted booster transformer to provide power for the electric flat car. In the operation process of the electric flat carriage, the driving mechanism provides forward power for the driving wheel 3, and the three driven wheels (a first driven wheel 5, a second driven wheel 6 and a shaft are respectively provided with a bearing to enable the three driven wheels to independently and freely rotate) operate in a linkage manner, so that the problem that the wheels cannot advance due to differential speed is solved; the wheels on the driving shaft 1 and the driven shaft 2 are assembled according to an included angle of 7 degrees in a wheel mounting mode (three points and one line are mounted in a positioning mode), the wheel rim oblique angle of the driving wheel 3 on the outer arc track 12 is increased, the track cannot be gnawed in the operation process, and the electric flat carriage is guaranteed to stably operate on the arc track.

It is noted that terms such as first and second are used herein only to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.