Three-way vehicle suitable for narrow roadway

Abstract

The utility model relates to the technical field of three-way vehicles, and particularly discloses a three-way vehicle suitable for a narrow roadway, which comprises a vehicle body, a driving wheel group, a guide wheel group and a distance measuring component, two guide rails are respectively arranged on two sides in the narrow roadway, and the driving wheel group comprises a driving wheel positioned at the bottom of the front end of the vehicle body; the guide wheel set comprises a plurality of guide wheels symmetrically arranged on the two sides of the vehicle body and driving units in one-to-one correspondence with the guide wheels, and the distance measuring sensors comprise the first distance measuring sensor and the second distance measuring sensor. The distance between the two sides of the vehicle body and the two guide rails can be measured through the two first distance measuring sensors, if the vehicle body is not centered, the driving wheels can be controlled to steer until the vehicle body is centered and then normally runs, and the vehicle body can be mechanically limited through the guide wheels on the two sides of the vehicle body; meanwhile, due to the fact that a certain gap is guaranteed between the guide wheel and the guide rail, abrasion of the guide wheel and the guide rail can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way vehicles, in particular to a three-way vehicle suitable for narrow lanes. Background Art

[0002] Due to its excellent handling performance, three-way carts are used in various places such as airports and warehouses. Among them, in factory warehouses, there is a special movement scenario for three-way carts, that is, driving in narrow aisles. A narrow aisle for the three-way cart to drive is set between two adjacent shelves. However, since the movement area is very narrow, conventional three-way carts are prone to hit the shelves, which in turn causes the shelves to overturn. In order to solve this problem, guide structures are usually set on both sides of the vehicle body to use the guide structures to limit the lateral movement of the three-way cart.

[0003] In the prior art, guide wheels are usually set on both sides of the vehicle body, and guide rails are set on both sides of the narrow alley. The guide wheels and the guide rails are used to abut against each other to limit the position and prevent the vehicle body from hitting the shelves. Frequent friction between the guide wheels and the guide rails will cause wear, which will cause the guide wheels and the guide rails to get stuck and cannot be used for a long time. Summary of the Invention

[0004] The present invention is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a three-way vehicle suitable for narrow aisles. The first distance measuring sensor can make the vehicle body keep running in the middle of two guide rails, realize automatic centering, and avoid hitting the shelves. The second distance measuring sensor maintains the distance between the guide wheel and the guide rail to avoid contact between the guide wheel and the guide rail in normal movement. When the first distance measuring sensor fails, the guide wheel can maintain the distance between the vehicle body and the shelf, thereby improving safety performance.

[0005] To achieve the above-mentioned object, the present invention provides a three-way vehicle suitable for use in narrow alleyways, wherein two guide rails are provided on both sides of the narrow alleyway, respectively. The three-way vehicle comprises a vehicle body, a driving wheel assembly, a guide wheel assembly, and a distance measuring assembly. The driving wheel assembly comprises a driving wheel located at the bottom of the front end of the vehicle body, the guide wheel assembly comprises a plurality of guide wheels symmetrically arranged on both sides of the vehicle body, and a driving unit corresponding one to one with the guide wheels. The driving unit is connected to the guide wheels and can drive the guide wheels to move toward a side away from or toward the guide rails.

[0006] The distance measuring component includes a first distance measuring sensor and a second distance measuring sensor. The first distance measuring sensor is electrically connected to the driving wheel and is used to measure the distance between the two sides of the vehicle body and the two guide rails, and control the vehicle body to travel in the middle of the two guide rails through the driving wheel. The second distance measuring sensor corresponds to the guide wheel one-to-one and is electrically connected to the driving unit. The second distance measuring sensor is used to measure the distance between the guide wheel and the guide rail, and adjust the guide wheel in real time through the driving unit to keep the distance between the guide wheel and the guide rail at a first preset distance.

[0007] According to the above-mentioned three-way vehicle suitable for narrow alleys, the two driving wheels are symmetrically arranged on the front side of the vehicle body, and each driving wheel is provided with a steering motor, the two first ranging sensors are symmetrically arranged on both sides of the vehicle body, and the two first ranging sensors are respectively connected to the electrical signals of the two steering motors.

[0008] According to the above-mentioned three-way vehicle suitable for narrow alleys, the front end of the vehicle body is provided with two symmetrically arranged legs, the two driving wheels are respectively arranged at the bottom of the front ends of the two legs, and the two first ranging sensors are respectively fixed on the outside of the two legs.

[0009] According to the above-mentioned three-way vehicle suitable for narrow alleys, the guide wheel group also includes a movable wheel frame, one end of the wheel frame is movably arranged on the vehicle body, the guide wheel is fixed to the bottom of the end of the wheel frame away from the vehicle body, and the second ranging sensor is located on the end of the wheel frame away from the vehicle body.

[0010] According to the above-mentioned three-way vehicle suitable for narrow alleys, the wheel frame includes a driving part and a mounting part, the driving part is movably connected to the vehicle body, the mounting part is connected to one end of the driving part and is located on the outside of the vehicle body, the guide wheel is fixed to the bottom of the mounting part, and the second ranging sensor is located on the outer end surface of the mounting part.

[0011] According to the above-mentioned three-way vehicle suitable for narrow lanes, the driving unit includes a driving member and a driving gear. A rack is provided on the top of the driving part, and the driving member is meshed with the rack through the driving gear.

[0012] According to the three-way vehicle suitable for narrow lanes described above, the driving member is configured as a driving motor, and the driving motor is electrically connected to the second distance measuring sensor.

[0013] According to the above-mentioned three-way vehicle suitable for narrow lanes, a guide frame is provided on the inner side of the vehicle body, and an opening is provided on the side of the vehicle body to communicate with the guide frame, and one end of the driving part can pass through the opening and be located in the guide frame.

[0014] The utility model has the following beneficial effects: when a three-way vehicle enters a narrow alley, it can measure the distance between the two sides of the vehicle body and the two guide rails through the two first distance measuring sensors, and then judge whether it is aligned based on the distance. If it is not aligned, the driving wheels can be controlled to turn until it is centered and then travels normally. In addition, the guide wheels on both sides of the vehicle body are mechanically limited to prevent the vehicle body from directly colliding with the shelf when the first distance measuring sensor fails. At the same time, since a certain gap is ensured between the guide wheels and the guide rails, wear of the two can be avoided. Even if there are uneven areas on the guide rails, the second distance measuring sensor can sense the distance change between them, and the drive unit can be controlled to adjust the distance in real time, thereby avoiding collision and wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 1 is a schematic diagram of the overall structure of the embodiment;

[0016] Figure 2 It is a front view of the overall structure of the embodiment;

[0017] Figure 3 It is a partial enlarged structural schematic diagram of the embodiment.

[0018] In the picture:

[0019] 100, vehicle body; 110, outriggers; 120, guide frame;

[0020] 200, driving wheel set; 210, driving wheel;

[0021] 300, guide wheel assembly; 310, guide wheel; 320, drive unit; 321, drive motor; 322, drive gear; 330, wheel frame; 331, drive unit; 331a, rack; 332, mounting unit;

[0022] 400, ranging component; 410, first ranging sensor; 420, second ranging sensor;

[0023] 500. Guide rail. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1-3As shown, a three-way vehicle suitable for narrow lanes includes a vehicle body 100, a driving wheel set 200, a guide wheel set 300 and a distance measuring component 400.

[0026] Specifically, two guide rails 500 are provided on both sides of the narrow lane, and the driving wheel group 200 includes a driving wheel 210 located at the bottom of the front end of the vehicle body 100, and the driving wheel 210 is used to drive the vehicle body 100 to move, and can realize the steering adjustment of the position of the vehicle body 100, and the distance measuring component 400 includes a first distance measuring sensor 410, and the first distance measuring sensor 410 is electrically connected to the driving wheel 210. The first distance measuring sensor 410 is used to measure the distance between the two sides of the vehicle body 100 and the two guide rails 500, and can feed back the distance signal to the control system of the three-way vehicle. If the distance between the two sides is inconsistent, it can send a control signal to the driving wheel 210 to control its steering, thereby adjusting the position of the vehicle body 100, and controlling the driving wheel 210 to control the vehicle body 100. The vehicle body 100 is controlled to travel in the middle of the two guide rails 500 so that the vehicle body 100 is located between the two guide rails 500 to avoid the vehicle body 100 from colliding with the shelf. In order to avoid the collision between the vehicle body 100 and the shelf due to the failure of the first distance measuring sensor 410, a mechanical limit is provided. The guide wheel group 300 includes a plurality of guide wheels 310 symmetrically arranged on both sides of the vehicle body 100 and a driving unit 320 corresponding to the guide wheels 310 one by one. The driving unit 320 is connected to the guide wheel 310 and can drive the guide wheel 310 to move toward or away from the guide rail 500. The distance between the guide wheel 310 and the guide rail 500 can be adjusted by the driving unit 320. In this embodiment, although the guide wheel 310 is connected to the guide rail 500 cooperates to play the role of mechanical limit, but the guide wheel 310 is separated from the guide rail 500 under normal conditions, which can effectively avoid the guide wheel 310 and the guide rail 500 from wearing each other, improve service life, and avoid the phenomenon of jamming. The distance measuring component 400 also includes a second distance measuring sensor 420, which corresponds to the guide wheel 310 one by one and is electrically connected to the drive unit 320. The second distance measuring sensor 420 is used to measure the distance between the guide wheel 310 and the guide rail 500, and adjust the guide wheel 310 in real time through the drive unit 320 to keep the guide wheel 310 and the guide rail 500 at a first preset distance, that is, to set the distance between the guide wheel 310 and the guide rail 500 to The first preset distance, but due to the uneven state on the guide rail 500, if the position of the guide wheel 310 cannot be changed in real time, the guide wheel 310 is likely to collide with the guide rail 500. If the distance between the guide wheel 310 and the guide rail 500 is too far, the guide wheel 310 cannot play a protective role. Therefore, the second ranging sensor 420 can measure the distance between the guide wheel 310 and the guide rail 500. If the distance is less than or greater than the first preset distance, a signal is sent to control the driving unit 320 to drive the guide wheel 310 to move away from or close to the side of the guide rail 500, which is convenient for real-time adjustment to always keep it at the first preset distance to avoid collision and damage to the guide wheel 310 or the guide rail 500.

[0027] In this embodiment, the drive wheels 210 are symmetrically arranged on the front side of the vehicle body 100, and each drive wheel 210 is provided with a steering motor. Two first distance measuring sensors 410 are symmetrically arranged on both sides of the vehicle body 100, and the two first distance measuring sensors 410 are respectively electrically connected to the two steering motors. That is, when the two first distance measuring sensors 410 respectively detect the distances between the two sides of the vehicle body 100 and the two guide rails 500, if the distances are inconsistent, they will send a control signal to the two steering motors, thereby driving the two drive wheels 210 to steer, thereby adjusting the position of the vehicle body 100.

[0028] In order to achieve rapid centering, the front end of the vehicle body 100 is provided with two symmetrically arranged support legs 110, the two driving wheels 210 are respectively arranged at the bottom of the front ends of the two support legs 110, and the two first ranging sensors 410 are respectively fixed on the outside of the two support legs 110. That is, when the front end of the three-way vehicle just enters the narrow alley, the position of the vehicle body 100 can be adjusted to increase the centering speed.

[0029] Specifically, the guide wheel assembly 300 further includes a movable wheel frame 330, one end of which is movably disposed on the vehicle body 100, the guide wheel 310 is fixed to the bottom of the end of the wheel frame 330 away from the vehicle body 100, and the second distance measuring sensor 420 is located on the end of the wheel frame 330 away from the vehicle body 100. In this embodiment, the wheel frame 330 includes a driving portion 331 and a mounting portion 332. The driving portion 331 is movably connected to the vehicle body 100, and the mounting portion 332 is connected to one end of the driving portion 331 and is located on the outside of the vehicle body 100. The guide wheel 310 is fixed to the bottom of the mounting portion 332, and the second distance measuring sensor 420 is located on the outer end surface of the mounting portion 332. That is, the movement of the driving portion 331 can drive the mounting portion 332 to move, thereby driving the guide wheel 310 to move. Since the second distance measuring sensor 420 is located on the outer end surface of the mounting portion 332, it is closest to the guide rail 500 and can accurately measure the distance between the end of the wheel frame 330 and the guide rail 500. Combined with the installation position of the guide wheel 310, it can calculate the distance between the guide wheel 310 and the guide rail 500.

[0030] Among them, the driving unit 320 includes a driving member and a driving gear 322. A rack 331a is provided at the top of the driving part 331. The driving member is engaged with the rack 331a through the driving gear 322. The driving member drives the driving gear 322 to rotate, and the driving gear 322 drives the rack 331a engaged with it to translate, thereby realizing the translation of the driving part 331.

[0031] In this embodiment, the driving member is set to a driving motor 321, and the driving motor 321 is electrically connected to the second distance measuring sensor 420. When the second distance measuring sensor 420 measures the distance between the guide wheel 310 and the guide rail 500, if it is not equal to the first preset distance, a control signal can be sent to the driving motor 321 to make it rotate forward or reverse to drive the gear to rotate forward or reverse, and then the rack 331a drives the driving part 331 to move outward or inward to achieve its distance adjustment.

[0032] In order to limit the movement of the driving part 331, a guide frame 120 is provided on the inner side of the vehicle body 100, and an opening is provided on the side of the vehicle body 100 to communicate with the guide frame 120. One end of the driving part 331 can pass through the opening and be located in the guide frame 120. The guide frame 120 is used to guide the driving part 331 so that it can only move along the side close to or away from the guide rail 500 to prevent it from deviating.

[0033] The technical solution of the present invention has been described in detail above with reference to the accompanying drawings, and the embodiments described are intended to help understand the concept of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention may make various modifications or additions to the described specific embodiments, or adopt similar methods to replace them, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A three-way vehicle suitable for narrow lanes, wherein two guide rails are provided on both sides of the narrow lane, characterized in that: The three-way vehicle includes a vehicle body, a driving wheel group, a guide wheel group, and a distance measuring component. The driving wheel group includes a driving wheel located at the bottom of the front end of the vehicle body. The guide wheel group includes a plurality of guide wheels symmetrically arranged on both sides of the vehicle body and a driving unit corresponding to each of the guide wheels. The driving unit is connected to the guide wheels and can drive the guide wheels to move toward a side away from or close to the guide rail. The distance measuring component includes a first distance measuring sensor and a second distance measuring sensor. The first distance measuring sensor is electrically connected to the driving wheel and is used to measure the distance between the two sides of the vehicle body and the two guide rails, and control the vehicle body to travel in the middle of the two guide rails through the driving wheel. The second distance measuring sensor corresponds to the guide wheel one-to-one and is electrically connected to the driving unit. The second distance measuring sensor is used to measure the distance between the guide wheel and the guide rail, and adjust the guide wheel in real time through the driving unit to keep the distance between the guide wheel and the guide rail at a first preset distance.

2. A three-way vehicle suitable for narrow lanes according to claim 1, characterized in that: The two driving wheels are symmetrically arranged on the front side of the vehicle body, and each driving wheel is provided with a steering motor. The two first ranging sensors are symmetrically arranged on both sides of the vehicle body, and the two first ranging sensors are respectively connected to the two steering motors for electrical signals.

3. A three-way vehicle suitable for narrow lanes according to claim 2, characterized in that: The front end of the vehicle body is provided with two symmetrically arranged supporting legs, the two driving wheels are respectively arranged at the bottom of the front ends of the two supporting legs, and the two first ranging sensors are respectively fixed on the outer sides of the two supporting legs.

4. A three-way vehicle suitable for narrow lanes according to claim 1, characterized in that: The guide wheel group also includes a movable wheel frame, one end of which is movably arranged on the vehicle body, the guide wheel is fixed to the bottom of the end of the wheel frame away from the vehicle body, and the second ranging sensor is located on the end of the wheel frame away from the vehicle body.

5. A three-way vehicle suitable for narrow lanes according to claim 4, characterized in that: The wheel frame includes a driving part and a mounting part. The driving part is movably connected to the vehicle body. The mounting part is connected to one end of the driving part and is located on the outside of the vehicle body. The guide wheel is fixed to the bottom of the mounting part, and the second ranging sensor is located on the outer end surface of the mounting part.

6. A three-way vehicle suitable for narrow lanes according to claim 5, characterized in that: The driving unit includes a driving member and a driving gear. A rack is provided on the top of the driving portion. The driving member is meshed with the rack through the driving gear.

7. A three-way vehicle suitable for narrow lanes according to claim 6, characterized in that: The driving member is configured as a driving motor, and the driving motor is electrically connected to the second distance measuring sensor.

8. The three-way vehicle suitable for narrow lanes according to claim 6, characterized in that: A guide frame is provided on the inner side of the vehicle body, and an opening is provided on the side of the vehicle body to communicate with the guide frame. One end of the driving part can pass through the opening and be located in the guide frame.

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