A four-way vehicle and mother-daughter track assembly

Abstract

This utility model discloses a four-way vehicle and a mother-daughter track assembly, wherein the daughter track has a notch, and the four-way vehicle has a first set of wheels located on both sides of the four-way vehicle and a second set of wheels located at both ends of the four-way vehicle. The first set of wheels consists of 8 first wheels, and the 4 first wheels on each side travel on a daughter track. When any one of the first three first wheels on the same side passes through the notch and is suspended in the air, the other three first wheels are always in contact with the surface of the daughter track to maintain the overall stability of the four-way vehicle and prevent one end from tilting downwards, causing the wheels to get stuck in the notch or collide with the track.

Description

Technical Field

[0001] This utility model relates to the field of warehousing, specifically to a component of a four-way vehicle and a mother-daughter track. Background Technology

[0002] In warehousing systems, a grid-like main track is used in the shelving, with four-way vehicles traveling on it. At the intersection of the main and secondary tracks, the relative lifting and lowering of two sets of wheels on the four-way vehicles creates a reversing direction, thus changing their travel direction. For example, patent CN221970412U discloses a main track and a main track cooperation structure for a four-way shuttle in an automated warehouse. This structure includes a main track and reversing / sub-tracks perpendicular to the main track. To prevent interference between the main and secondary tracks when the main travel wheels pass over the main track, a gap is formed between the reversing and secondary tracks. The main track passes through this gap, and the main track is lower than the secondary track. While this gap design avoids interference between the main travel wheels and the reversing track, when the four-way vehicle continuously travels on the reversing track and needs to pass through this gap, the secondary travel wheels can easily get stuck in the gap, or fall into the gap and then onto the secondary track, causing a collision with the end face of the secondary track and resulting in vibration of the four-way vehicle. It is detrimental to the stability of the four-way vehicle traveling on the parent and child tracks.

[0003] Therefore, a new technical solution is needed to solve the above problems. Utility Model Content

[0004] Purpose of the utility model: In view of the above-mentioned shortcomings, this utility model provides a component of a four-way vehicle and a mother-daughter track, which solves the problem of avoiding the wheels getting stuck in the gap or colliding with the edge of the track and causing vibration when the four-way vehicle is traveling on a track with gaps.

[0005] Technical Solution: To solve the above problems, the four-way vehicle and mother-daughter track assembly provided by this utility model can adopt the following technical solution:

[0006] An assembly of a four-way vehicle and a parent-child track, the parent-child track comprising a parent track and a child track perpendicular to the parent track, the surface of the child track being higher than the surface of the parent track, and the child track having a notch through which the parent track passes; the four-way vehicle having a first set of wheels located on both sides of the four-way vehicle and a second set of wheels located at both ends of the four-way vehicle, and the travel direction of the first set of wheels being perpendicular to the travel direction of the second set of wheels, characterized in that the first set of wheels comprises a total of 8 first wheels, with 4 first wheels on each side of the four-way vehicle, and the 4 first wheels on each side traveling on a child track; when any one of the first three first wheels on the same side passes through the notch and is suspended in the air, the other three first wheels are always in contact with the surface of the child track; when the last first wheel passes through the notch and is suspended in the air, the second and third first wheels are always in contact with the surface of the child track.

[0007] Furthermore, the second and third first wheels are driving wheels, and the first and fourth first wheels are driven wheels.

[0008] Furthermore, the first and second first wheels are close to each other, the third and fourth first wheels are close to each other, and the first wheel distance between the first and second first wheels is equal to the second wheel distance between the third and fourth first wheels.

[0009] Furthermore, the first wheel track is slightly larger than the length of the gap extending on the sub-track.

[0010] Furthermore, when the four-way vehicle needs to change direction, the first and fourth wheels are suspended above two adjacent gaps, the second and third wheels are in contact with the sub-track surface, and the second set of wheels descends relative to the first set of wheels and contacts the mother track surface.

[0011] Furthermore, the first wheel track is 165mm, and the notch length is 156mm.

[0012] Furthermore, when the second set of wheels descends and contacts the surface of the main track, both the second set of wheels and the gearbox coaxially connected to the axle of the second set of wheels are located in the notch.

[0013] Beneficial Effects: The four-way vehicle and parent-child track assembly provided by this utility model is designed with the positional relationship between the wheels traveling on the child track and the track gaps in mind. This ensures that when any one of the first three wheels on the same side passes through the gap and becomes suspended in the air, the other three first wheels remain in contact with the surface of the child track to maintain the overall stability of the four-way vehicle. This prevents one end from tilting downwards, which could cause a wheel to get stuck in the gap or collide with the track. Furthermore, when the last first wheel passes through the gap and becomes suspended in the air, the second and third first wheels in the middle position remain in contact with the surface of the child track, ensuring that the center of gravity of the four-way vehicle remains on the track, also preventing one end from tilting downwards. This design of the wheel-track gap positional relationship allows the four-way vehicle to travel more smoothly on the track. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the four-way vehicle and the mother-daughter track assembly in this utility model, showing the state when the first wheel is suspended in the air.

[0015] Figure 2 yes Figure 1 A magnified view of the first wheel suspended above the gap.

[0016] Figure 3 This is a structural schematic diagram of the four-way vehicle and the mother-daughter track assembly in this utility model, showing the state when the second first wheel is suspended in the air.

[0017] Figure 4 This is a structural schematic diagram of the four-way vehicle and the mother-daughter track assembly in this utility model, and it shows the state when the third first wheel is suspended in the air.

[0018] Figure 5 This is a structural schematic diagram of the four-way vehicle and the mother-daughter track assembly in this utility model, showing the state when the fourth first wheel is suspended in the air.

[0019] Figure 6 This is a schematic diagram of the second set of wheels descending relative to the first set of wheels and contacting the surface of the parent track.

[0020] Figure 7 This is a schematic diagram of the first wheel track and the notch length. Detailed Implementation

[0021] like Figure 1 and Figure 2 As shown, this embodiment discloses a four-way vehicle and a component of a mother-daughter track. The mother-daughter track includes a mother track 1 and a daughter track 2 that is perpendicular to the mother track 1. The surface of the daughter track 2 is higher than the surface of the mother track 1, and the daughter track 2 is provided with a notch 21 through which the mother track 1 passes.

[0022] The four-way vehicle has a first set of wheels 3 located on both sides of the vehicle and a second set of wheels 4 located at both ends of the vehicle, with the travel direction of the first set of wheels 3 perpendicular to the travel direction of the second set of wheels 4. The first set of wheels 3 has a total of 8 first wheels, with 4 first wheels on each side of the four-way vehicle, and the 4 first wheels on each side travel on a sub-track 2.

[0023] In this component structure, the positional relationship between the first wheel and the notch 21 is defined: when any one of the three first wheels on the same side passes through the notch and becomes suspended in the air, the other three first wheels are always in contact with the sub-track surface. (See reference...) Figure 1 , Figure 2 As shown, when the first wheel 31 on the same side is suspended above the gap, the other three wheels 32, 33, and 34 are always in contact with the sub-track surface. At this time, most of the structure and center of gravity of the four-way vehicle are located on the sub-track 2, and the front end of the four-way vehicle will not tilt downwards; while as Figure 3 As shown, when the second first wheel 32 on the same side is suspended above the gap, or as... Figure 4 As shown, when the second first wheel 33 on the same side is suspended above the gap, the other three first wheels remain in contact with the sub-track surface, and the four-way vehicle can still travel stably on sub-track 2. However, as... Figure 5As shown, when the last first wheel 34 passes through the gap 21 and is suspended in the air, the second first wheel 32 and the third first wheel 33 remain in contact with the surface of the sub-track 2. At this time, the center of gravity of the four-way vehicle is always located on the track, preventing the front or rear of the four-way vehicle from tilting downwards. Thus, by limiting the positional relationship between the first wheels and the gap 21 in this component structure, the four-way vehicle can move relatively smoothly on the track.

[0024] The positional relationship between the first wheel and the notch 21 can be achieved in the specific parameter design by setting the wheelbase and the length of the notch 21. Specifically: In this embodiment, the first wheel 31 and the second wheel 32 are close to each other, the third wheel 33 and the fourth wheel 34 are close to each other, and the first wheelbase between the first wheel 31 and the second wheel 32 is equal to the second wheelbase between the third wheel 33 and the fourth wheel 34; the first wheelbase is slightly larger than the length of the notch 21 extending on the sub-track. For example, in the parameter design of a four-way vehicle and track, such as... Figure 7 As shown, the first wheel track is 165mm and the length of the notch 21 is 156mm, which satisfies the positional relationship between the first wheel and the notch 21. When the size structure of the four-way vehicle and the size structure of the track change, the first wheel track is slightly larger than the length of the notch 21 extending on the sub-track as the design standard. The corresponding calculations are performed to obtain the parameters that meet the requirements. This is a technical means that can be replicated by those skilled in the art, and will not be elaborated here.

[0025] When a four-way vehicle needs to change direction, such as Figure 5 As shown, the four-way vehicle is driven until the first wheel 31 and the fourth wheel 34 are respectively suspended above the two adjacent gaps 21. Then, as... Figure 6 As shown, the second set of wheels 4 descends relative to the first set of wheels and contacts the surface of the main track 1, while the first wheels disengage from the sub-track 2 to complete the reversal. This is a common method for reversing four-way vehicles on main and sub-tracks in this field, and will not be elaborated further here. It should be noted that when the second set of wheels 4 descends and contacts the surface of the main track 1, both the second set of wheels 4 and the gearbox 41 coaxially connected to the axle of the second set of wheels 4 are located in the notch 21. This condition needs to be met when designing the length of the notch 21.

Claims

1. A four-way vehicle and a mother-daughter track assembly, the mother-daughter track comprising a mother track and a daughter track perpendicular to the mother track, the surface of the daughter track being higher than the surface of the mother track, and the daughter track having a notch through which the mother track passes; the four-way vehicle having a first set of wheels located on both sides of the four-way vehicle and a second set of wheels located at both ends of the four-way vehicle, wherein the travel direction of the first set of wheels is perpendicular to the travel direction of the second set of wheels, characterized in that, The first group of wheels consists of eight first wheels, with four first wheels on each side of the four-way vehicle. The four first wheels on each side travel on a sub-track. When any one of the first three first wheels on the same side passes through the gap and is suspended in the air, the other three first wheels are always in contact with the surface of the sub-track. When the last first wheel passes through the gap and is suspended in the air, the second and third first wheels are always in contact with the surface of the sub-track.

2. The four-way vehicle and mother-daughter track assembly according to claim 1, characterized in that, The second and third first wheels are driving wheels, and the first and fourth first wheels are driven wheels.

3. The four-way vehicle and mother-daughter track assembly according to claim 2, characterized in that, The first and second wheels are close to each other, the third and fourth wheels are close to each other, and the first wheel distance between the first and second wheels is equal to the second wheel distance between the third and fourth wheels.

4. The four-way vehicle and mother-daughter track assembly according to claim 3, characterized in that, The first wheel track is slightly larger than the length of the gap extending on the sub-track.

5. The four-way vehicle and mother-daughter track assembly according to claim 3, characterized in that, When the four-way vehicle needs to change direction, the first and fourth wheels are suspended above two adjacent gaps, the second and third wheels are in contact with the sub-track surface, and the second set of wheels descends relative to the first set of wheels and contacts the parent track surface.

6. The four-way vehicle and mother-daughter track assembly according to claim 4, characterized in that, The first wheel track is 165mm, and the notch length is 156mm.

7. The four-way vehicle and mother-daughter track assembly according to claim 5, characterized in that, When the second set of wheels descends and contacts the surface of the main track, the second set of wheels and the gearbox coaxially connected to the axle of the second set of wheels are both located in the notch.

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