CN213473140U - Guide wheel mechanism for RGV steering - Google Patents

Abstract

The utility model discloses a leading wheel mechanism for RGV turns to relates to logistics equipment technical field. The guide wheel mechanism comprises mounting frames, and the two mounting frames are respectively arranged on the front side and the rear side of the walking wheel box body. The mounting bracket on lie in the left and right both sides of walking wheel and be provided with the leading wheel respectively, and the distance that lies in between two leading wheels in the track outside is greater than the distance that lies in between two leading wheels in the track inboard. The guide wheels on the guide mechanism are arranged in a wheel track with different widths, namely, the distance between the guide wheels positioned on the outer side of the turning track is increased, and the distance between the guide wheels positioned on the inner side of the turning track is reduced, so that the guide mechanism can meet the operation requirement in the gaps of the straight section of the track and the turning section of the track, and is suitable for two track working conditions.

Description

Guide wheel mechanism for RGV steering

Technical Field

The utility model belongs to the technical field of logistics equipment technique and specifically relates to a leading wheel mechanism for RGV turns to.

Background

At present, most of guide mechanisms adopted by the RGV steering travelling wheels on the market are in structures as the schematic diagram on the right side in fig. 8, namely, the guide mechanisms are arranged in the equal-width track. The arrangement cannot be used on a large-radius track, but when the arrangement is used on a small-radius track, the gap between the guide wheel and the track is obviously changed in a straight section and a turning section, namely, one gap value cannot adapt to the working conditions of the two tracks. As shown in fig. 7, 8 and 9, if the distance requirement of the straight line segment is satisfied, the turning segment is easy to be blocked due to the small gap, and even the state shown in fig. 9 occurs, and a significant interference occurs between the guide wheel and the rail in the turning segment, so that the guide wheel is blocked. If the requirement of the distance between the turning sections is met, the straight line section can shake due to overlarge clearance.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a leading wheel mechanism for RGV turns to, the leading wheel on this leading wheel mechanism adopts the wheel base of not aequilate to arrange, is about to be located the leading wheel interval in the turning track outside and strengthens, and the leading wheel interval that is located the turning track inboard reduces, both can guarantee like this that the leading wheel mechanism can satisfy the operation requirement at track straightway and track turn section clearance homoenergetic, adapts to two kinds of track operating modes simultaneously.

The utility model provides a technical scheme that its technical problem adopted is:

a guide wheel mechanism for RGV steering comprises mounting frames, wherein the two mounting frames are respectively arranged on the front side and the rear side of a walking wheel box body;

the mounting bracket on lie in the left and right both sides of walking wheel and be provided with the leading wheel respectively, and the distance that lies in between two leading wheels in the track outside is greater than the distance that lies in between two leading wheels in the track inboard.

Further, the mounting bracket on be provided with the first through-hole that is used for installing the leading wheel, just first through-hole be a slotted hole, the mounting bracket on be provided with holding screw, and under the combined action of holding screw and first through-hole, the position of leading wheel in the horizontal plane is fixed.

Further, a symmetry axis of the first through hole extending in the length direction coincides with a normal of the track turning section.

Furthermore, the left side and the right side of the walking wheel on the mounting bracket are respectively provided with a second through hole in the shape of a long round hole, and the number of the second through holes is four, the symmetry axes extending along the length direction form intersection points outside the track, and the intersection points and the circle center of the track are symmetrically arranged on the symmetry plane of the guide wheel mechanism.

Further, the leading wheel pass through the center pin with the mounting bracket rotate and be connected, the upper end of center pin with mounting bracket fixed connection, the lower extreme of center pin is provided with the leading wheel, just the leading wheel pass through bearing assembly with the center pin rotate and be connected.

Further, an oil filling cup is arranged at the upper end of the central shaft.

Further, the outer end of the mounting rack is fixedly provided with a hairbrush.

Further, the mounting bracket include vertical mounting panel with set up in the horizontal installation board of vertical mounting panel below, vertical mounting panel with walking wheel box fixed connection, the leading wheel install in the horizontal installation board on.

Furthermore, a rib plate is arranged between the outer side face of the vertical mounting plate and the horizontal mounting plate.

The utility model has the advantages that:

1. the guide wheels on the guide mechanism are arranged in a wheel track with different widths, namely, the distance between the guide wheels positioned on the outer side of the turning track is increased, and the distance between the guide wheels positioned on the inner side of the turning track is reduced, as shown in fig. 7, 8 and 10, so that the guide mechanism can meet the operation requirement in the gaps between the straight section of the track and the turning section of the track, and can adapt to the working conditions of the two tracks.

2. The first through hole matched with the guide wheel is designed into a long round hole and extends along the normal direction of the track, so that the position of the guide wheel is adjusted in real time in the normal direction of the track, on one hand, the circle center of the walking track of the guide wheel can be ensured to be superposed with the circle center of the turning section of the track during turning, and the relative sliding between the walking wheel and the track and the noise generation are avoided; on the other hand, the track width change caused by machining or assembly errors can be compensated, namely, in the actual assembly process, the gap is adjusted according to the actual machining size, and the stability of the steering travelling wheel cannot be influenced.

3. Through set up the brush respectively in guiding mechanism's front and back both sides, can clear away dust and filth on the track, prevent that the adhesion from to the walking wheel on, causing and skidding or produce the noise.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a left side view of the present invention;

fig. 4 is a top view of the present invention;

FIG. 5 is a schematic view of the position relationship of the oblong holes matched with the guide wheels;

FIG. 6 is an enlarged schematic view of portion B of FIG. 5;

FIG. 7 is a schematic view comparing a guide mechanism with a conventional structure;

FIG. 8 is an enlarged view of the portion C of FIG. 7;

FIG. 9 is an enlarged view of portion D of FIG. 7;

fig. 10 is an enlarged schematic view of a portion E in fig. 7.

In the figure: 1-a traveling wheel box body,

2-the walking wheels are arranged on the front part of the frame,

31-vertical mounting plate, 32-horizontal mounting plate, 321-first through hole, 322-second through hole, 33-rib plate, 34-guide wheel, 35-central shaft, 36-locking nut, 37-oil filling cup, 38-set screw, 39-brush, 391-support,

4-track.

Detailed Description

For convenience of description, a coordinate system is defined as shown in fig. 1, that is, the traveling wheel of the RGV car is forward, the left-right direction is transverse, the front-back direction is longitudinal, and the up-down direction is vertical.

As shown in fig. 1, a guide wheel mechanism for RGV steering includes mounting brackets mounted at the front and rear of a traction box 1. Guide wheels 34 are respectively arranged on the left side and the right side of the travelling wheel 2 on the mounting frame, and as shown in fig. 4 and 5, the distance M between the two guide wheels 34 on the outer side of the track 4 is greater than the distance N between the two guide wheels 34 on the inner side of the track 4. The outside of the track 4 and the inside of the track 4 are determined based on the turning section of the track 4, the outside of the track 4 is a side away from the center of the turning section of the track 4, and the inside of the track 4 is a side close to the center of the turning section of the track 4.

As a specific implementation manner, the trolley case 1 in this embodiment includes a top plate, four edges of a lower side surface of the top plate are respectively provided with a vertical plate extending downward along a vertical direction, and the top plate and the vertical plate together form an open case with an opening facing downward. The walking wheel box body 1 is internally provided with a walking wheel 2.

The mounting bracket include vertical mounting panel 31, vertical mounting panel 31's below is provided with a horizontal mounting panel 32, just horizontal mounting panel 32 through the welded mode with vertical mounting panel 31 fixed connection. The vertical mounting plate 31 is fixedly connected with the travelling wheel box body 1 through screws. As a specific implementation manner, in the present embodiment, the vertical mounting plate 31 of the mounting bracket located at the front side is fixedly connected to the vertical plate located at the front side of the trolley case 1 through a screw; the vertical mounting plate 31 of the mounting rack positioned at the rear side is fixedly connected with a vertical plate positioned at the rear side of the travelling wheel box body 1 through screws. The guide wheels 34 are mounted on the horizontal mounting plate 32.

As shown in fig. 1 and 2, the guide wheel 34 is rotatably connected to the horizontal mounting plate 32 via a central shaft 35. Specifically, the upper end of the central shaft 35 is fixedly connected with the horizontal mounting plate 32, the lower end of the central shaft 35 is provided with a guide wheel 34, and the guide wheel 34 is rotatably connected with the central shaft 35 through a bearing assembly. As a specific implementation manner, the central shaft 35 in this embodiment is mounted in a stepped shaft with small diameters at two ends and a large diameter at the middle, and for convenience of description, the central shaft 35 is defined as a first shaft section, a second shaft section and a third shaft section sequentially from top to bottom. The first shaft section on be provided with the external screw thread, horizontal installation board 32 on be provided with and be used for holding the first through-hole 321 of first shaft section, just the upper end of first shaft section pass first through-hole 321 extend to horizontal installation board 32's top. The first shaft section on be located horizontal mounting plate 32's top is provided with two lock nut 36, just step face between first shaft section and the second shaft section is in lock nut 36's locking effect compresses tightly down on horizontal mounting plate 32's the downside. The third shaft section is provided with a guide wheel 34, and the guide wheel 34 is rotatably connected with the third shaft section through a bearing assembly. The upper end face of the inner ring of the bearing assembly is abutted against the step face between the third shaft section and the second shaft section, and the third shaft section is provided with a shaft elastic retainer ring at the lower side of the inner ring. Elastic check rings for holes are respectively arranged on the upper side and the lower side of the outer ring of the bearing assembly on the guide wheel 34.

Further, as shown in fig. 1 and 2, an oil filling cup 37 is provided at an upper end of the center shaft 35, and an oil passage for supplying lubricating oil to the bearing assembly is provided in the center shaft 35 in cooperation with the oil filling cup 37.

Further, in order to avoid the existence of machining errors and assembly errors, which causes the gap between the guide wheel 34 and the track 4 not to meet the operation requirement, as shown in fig. 4, the first through hole 321 on the horizontal mounting plate 32 for matching with the central shaft 35 is an oblong hole, and the left side surface and the right side surface of the horizontal mounting plate 32 are respectively provided with a set screw 38 for tightly propping against the central shaft 35. In this way, the distance between the two guide wheels 34 on the same mounting frame can be adjusted according to the actual assembly conditions in the actual assembly process, so that the gap requirement can be met.

Further, as shown in fig. 5, a symmetry axis of the first through hole 321 extending along the length direction coincides with a normal of the turning section of the track 4, that is, the first through hole 321 extends along the normal direction. The reason for this design is that if the first through hole 321 extends along the direction parallel to the normal of the turning section of the track 4 of the axis of the over-travel wheel 2, after adjustment, the center of the travel track of the guide wheel 34 cannot be ensured to coincide with the center of the turning section of the track 4 during turning, which is likely to cause relative sliding between the over-travel wheel 2 and the track 4, on one hand, wear and noise will be generated.

Further, as shown in fig. 4 and 5, the horizontal mounting plate 32 is provided with second through holes 322 in the shape of oblong holes on the left and right sides of the road wheel 2, and the symmetry axes of the four second through holes 322 extending in the length direction form an intersection point with one point outside the track 4. The intersection point and the center of the track 4 are symmetrically arranged about the symmetry plane of the guide wheel 34 mechanism.

This is provided to increase the versatility of the guide wheel 34 mechanism and to accommodate tracks 4 that are completely oriented in different directions.

Further, as shown in fig. 2, the vertical mounting plate 31 is located in the middle of the horizontal mounting plate 32 in the front-rear direction, and a rib plate 33 is disposed between the outer side surface of the vertical mounting plate 31 (the side opposite to the two vertical mounting plates 31 is the inner side) and the horizontal mounting plate 32.

Further, as shown in fig. 1, a brush 39 is fixedly disposed at an outer end (an inner side is a side opposite to the two mounting brackets) of the horizontal mounting plate 32. In a specific embodiment, the brush 39 is fixedly connected to the horizontal mounting plate 32 by an L-shaped bracket 391. Therefore, dust and dirt on the track 4 can be removed in the running process, and the phenomenon that the dust and the dirt are adhered to the travelling wheels 2 to cause skidding or generate noise is prevented.

Claims (9)

1. A guide wheel mechanism for RGV turns to, includes the mounting bracket, its characterized in that: the two mounting racks are respectively arranged on the front side and the rear side of the travelling wheel box body;

the mounting bracket on lie in the left and right both sides of walking wheel and be provided with the leading wheel respectively, and the distance that lies in between two leading wheels in the track outside is greater than the distance that lies in between two leading wheels in the track inboard.

2. The guide wheel mechanism for RGV steering according to claim 1, wherein: the mounting bracket on be provided with the first through-hole that is used for installing the leading wheel, just first through-hole be a slotted hole, the mounting bracket on be provided with holding screw, and under the combined action of holding screw and first through-hole, the position of leading wheel in the horizontal plane is fixed.

3. The guide wheel mechanism for RGV steering according to claim 2, wherein: and the symmetry axis of the first through hole extending along the length direction is superposed with the normal of the turning section of the track.

4. A guide wheel mechanism for RGV steering according to claim 3, wherein: the mounting bracket on lie in the left and right both sides of walking wheel and be provided with the second through-hole that is the slotted hole form respectively, and four the symmetry axis that extends along length direction of second through-hole forms the nodical in orbital outside, the nodical with orbital centre of a circle about the plane of symmetry symmetrical arrangement of leading wheel mechanism.

5. The guide wheel mechanism for RGV steering according to claim 1, wherein: the leading wheel pass through the center pin with the mounting bracket rotate and be connected, the upper end of center pin with mounting bracket fixed connection, the lower extreme of center pin is provided with the leading wheel, just the leading wheel pass through bearing assembly with the center pin rotate and be connected.

6. The guide wheel mechanism for RGV steering according to claim 5, wherein: an oil filling cup is arranged at the upper end of the central shaft.

7. The guide wheel mechanism for RGV steering according to claim 1, wherein: the outer end of the mounting rack is fixedly provided with a hairbrush.

8. The guide wheel mechanism for RGV steering according to claim 1, wherein: the mounting bracket include vertical mounting panel with set up in the horizontal mounting panel of vertical mounting panel below, vertical mounting panel with walking wheel box fixed connection, the leading wheel install in the horizontal mounting panel on.

9. The guide wheel mechanism for RGV steering according to claim 8, wherein: and a rib plate is arranged between the outer side surface of the vertical mounting plate and the horizontal mounting plate.

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