Rail type serving trolley

Abstract

The utility model discloses a rail type serving trolley, which is mainly characterized in that a resetting device which has the characteristics of displacement, automatic resetting and straightening and the like is arranged on a rear wheel frame, and when a front wheel frame is controlled by a controller to rotate, the rear wheel frame is driven by the acting force generated by the turning of the front wheel frame to rotate. The resetting device can be pushed by the rear wheel frame to generate displacement so as to control the serving trolley to turn, when the front wheel frame turns and returns, the external acting force of the rear wheel frame disappears, and the rear wheel frame is also acted by the resetting device to be automatically straightened so as to ensure the smooth movement of the rail type serving trolley, so that the resetting device is simple in structural design and convenient to use. Therefore, the direction can be accurately controlled, the stability and the accuracy of the advancing and turning actions of the rail type serving trolley are achieved, and the effect of greatly reducing the subsequent maintenance cost is also achieved.

Description

Technical Field

[0001] The utility model relates to a food delivery design, in particular to a track-type food delivery vehicle. Background Art

[0002] As modern people have more and more opportunities to dine out or have a rest for tea, the services provided by restaurant service staff are nothing more than greeting customers, ushering them to their seats, taking orders, serving dishes, and cleaning up the table. However, due to the limited manpower of catering operators, sometimes when there are a large number of customers and a lot of service content, customers often have to wait and dishes are served slowly. In addition, with the increase in wages, it is difficult to recruit and train personnel, and the shortage of workers has become increasingly serious. Therefore, in this case, how to use automated equipment to replace staff, reduce the service items of service staff, and improve the quality and efficiency of other services is the direction of effort.

[0003] See also Figure 1 The existing rail-type meal delivery vehicle 1 includes a vehicle body 11 that can run on a track 2, a front wheel frame 12 and a rear wheel frame 13 respectively arranged on the vehicle body 11, two front wheels 14 arranged on the front wheel frame 12, two rear wheels 15 arranged on the rear wheel frame 13, driving motors 16 respectively installed on the front and rear wheels 14, 15, a steering motor 17 for controlling the swing of the front and rear wheel frames 12, 13, and a controller 18 for controlling the rotation of the front and rear wheels 14, 15 and the front and rear wheel frames 12, 13; wherein, the rail-type meal delivery vehicle 1 uses at least six motors including four of the driving motors 16 and two steering motors 17 to control the front and rear wheels 14, 15 of the vehicle body 11 to rotate forward, and the front and rear wheel frames 12, 13 to rotate to produce a turning action.

[0004] However, it was found during the actual operation that the driving method using the multiple drive motors 16 and the steering motor 17 actually has high cost and maintenance cost, and there is also a risk of high failure rate during use, that is, when any drive motor 16 or any steering motor 17 is damaged, it will directly affect the operation of the rail-type food delivery vehicle 1. In addition, it was also found during the actual operation that even if the multiple drive motors 16 and the two steering motors 17 are normal, because the multiple drive motors 16 and the two steering motors 17 have some slight errors in the power output control, the rail-type food delivery vehicle 1 cannot move forward and turn smoothly, resulting in instability in the food delivery of the rail-type food delivery vehicle 1, which really needs to be improved. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide a rail-type food delivery vehicle, which can effectively reduce the structural cost and improve the stability of the transportation process.

[0006] Therefore, the rail-type meal delivery vehicle of the utility model moves on a rail, and the meal delivery vehicle includes a vehicle body that can run on the rail and carry objects, a front wheel frame and a rear wheel frame pivotally connected to the vehicle body, two front wheels arranged on the front wheel frame, two rear wheels arranged on the rear wheel frame, and a controller for controlling the rotation of the front wheels; wherein a return device is arranged on the rear wheel frame, and the return device has a limiting group arranged on the vehicle body and linked to the rear wheel frame, and a restoring member for restoring the limiting group. The controller controls the rotation of the two front wheels to produce a speed difference so that the two front wheels produce a turning action, and the rear wheel frame is affected by the force generated by the turning of the two front wheels, and the rear wheel frame can push the limiting group to move until the external force of the rear wheel frame disappears, and the rear wheel frame is also accurately straitened and restored by the action of the return device, so the return device has the advantages of simple structure and low subsequent maintenance cost.

[0007] As a further improvement of the present invention, the limiting group has a linkage rod connected to the rear wheel frame and can swing with the action of the rear wheel frame, two top rods pivotally mounted on the vehicle body, and a stopper separately arranged on the vehicle body and located in the two top rods, and the return member can be set between the two top rods.

[0008] As a further improvement of the utility model, a limit block is provided on the outer side of the two push rods to limit the swing range of the two push rods.

[0009] As a further improvement of the utility model, a rotating wheel is pivotally provided on the linkage rod.

[0010] As a further improvement of the present invention, each front wheel is provided with a power motor, and the power motors are respectively controlled by the controller to control the two power motors to operate at the same speed or different speeds.

[0011] As a further improvement of the present invention, each push rod has an upright portion pivotally mounted on the vehicle body, and a transverse portion extending outward from the end of the upright portion and opposite to the other push rod, and the return member is disposed between the transverse portions of the two push rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an existing rail-type food delivery vehicle.

[0013] Figure 2 It is a three-dimensional schematic diagram of the first preferred embodiment of the utility model.

[0014] Figure 3 It is a top view schematically showing a first preferred embodiment of the utility model.

[0015] Figures 4 to 7 It is a schematic diagram of the operation of the first preferred embodiment of the utility model.

[0016] Figure 8 It is a structural schematic diagram of the second preferred embodiment of the utility model.

[0017] Fig. 9 It is a schematic diagram of the operation of the second preferred embodiment of the utility model.

[0018] Explanation of symbols:

[0019] (Prior Art)

[0020] 1: Track-type food delivery vehicle

[0021] 11: Car body

[0022] 12:Front wheel frame

[0023] 13: Rear wheel frame

[0024] 14:Front wheel

[0025] 15: Rear wheel

[0026] 16: Drive motor

[0027] 17: Steering motor

[0028] 2: Track

[0029] (This utility model)

[0030] 3: Track-type food delivery vehicle

[0031] 31: Car body

[0032] 32:Front wheel frame

[0033] 33: Rear wheel frame

[0034] 34:Front wheel

[0035] 341: Power Motor

[0036] 35: Rear wheel

[0037] 36: Controller

[0038] 37:Returner

[0039] 370: Restricted Group

[0040] 371: Linkage rod

[0041] 3711: Wheel

[0042] 372: Ejector

[0043] 372A: First ejector

[0044] 372B: Second ejector

[0045] 3721: Upright

[0046] 3722: Horizontal part

[0047] 374: Reply

[0048] 373: Stopper

[0049] 375: Limit block

[0050] 375A: First limit block

[0051] 375B: Second limit block

[0052] 4: Track

[0053] 41: Straight section

[0054] 42: Turning section

[0055] 5: Carrying plate DETAILED DESCRIPTION

[0056] The above and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

[0057] See also Figure 2 , Figure 3 , Figure 4 In the first preferred embodiment of the utility model, the rail-type meal delivery vehicle 3 can run on a rail 4, and the rail 4 includes at least one straight section 41 and at least one curved section 42 connected to the straight section 41; and the rail-type meal delivery vehicle 3 includes a vehicle body 31 that can run on the rail 4, a front wheel frame 32 and a rear wheel frame 33 respectively pivotally connected to the vehicle body 31, two front wheels 34 arranged on the front wheel frame 32, two rear wheels 35 arranged on the rear wheel frame 33, a controller 36 for controlling the rotation of the front wheels 34, and a return device 37 for controlling the actuation of the rear wheel frame 33; wherein, the front wheels 34 are respectively provided with a power motor 341, and the power motors 341 are respectively connected to the controller The controller 36 is connected and controlled so that the controller 36 can control the rotation of the power motors 341 respectively, so that the front wheels 34 rotate at the same speed or different speeds. When the front wheels 34 rotate at the same speed, the vehicle body 31 moves in a straight line. When the front wheels 34 rotate at different speeds, the speed difference generated by the different speeds of the front wheels 34 is used to control the front wheel frame 32 to deflect to the left or right, so as to control the vehicle body 31 to turn. In addition, the rear wheels 35 are pivotally mounted on the rear wheel frame 33, and the rear wheel frame 33 is pivotally mounted on the vehicle body 31. At the same time, in this embodiment, the vehicle body 31 can be equipped with a carrier plate 5 for transporting meals.

[0058] Continuing with the above, the return device 37 of this embodiment has a restriction group 370 arranged on the vehicle body 31 and linked to the rear wheel frame 33, and a return member 374 for returning the restriction group 370; wherein, in this embodiment, the restriction group 370 has a linkage rod 371 connected to the rear wheel frame 33 and can swing with the action of the rear wheel frame 33, two push rods 372 pivotally arranged on the vehicle body 31, and blocks 373 separately arranged on the vehicle body 31 and located in the push rods 372, and the return member 374 can be arranged between the push rods 372, and in this embodiment, the push rod 372 is explained by taking the first push rod 372A and the second push rod 372B as an example, and the return member 374 can actually be made into a spring, and the return member 374 is arranged between the first push rod 372A and the second push rod 372B. The first and second push rods 372A and 372B are connected to each other, so that the first push rod 372A and the second push rod 372B form a pulling force with each other, and the stopper 373 can resist the excessive inward deviation of the first and second push rods 372A and 372B due to the elastic restoring force, so that the first and second push rods 372A and 372B can be restricted to one position. At the same time, in this embodiment, a rotating wheel 3711 can be pivotally provided on the linkage rod 371 in a timely manner, and the rotating wheel 3711 is clamped between the first and second push rods 372A and 372B by the elastic force of the restoring member 374. At the same time, in order to set the rotating wheel 3711 down, the contact process between the rotating wheel 3711 and the first and second push rods 372A and 372B can be reduced to reduce resistance and wear. In this embodiment, the rotating wheel 3711 is represented by a rotating wheel as an example.

[0059] Continuing with the above, in this embodiment, each push rod 372 has an upright portion 3721 pivotally mounted on the vehicle body 31, and a transverse portion 3722 extending outward from the end of the upright portion 3721 and opposite to the other push rod 372, and the return member 374 is disposed between the two transverse portions 3722 so that the appearance of each push rod 372 is L-shaped, and the rotating wheel 3711 is located between any two of the upright portions 3721, and the return member 374 is disposed between any two of the transverse portions 3722, which will increase the stretching distance of the return member 374 and effectively enhance the return force of the return member 374.

[0060] Furthermore, in the present embodiment, the return device 37 further includes a limit block 375 disposed on the outer side of the push rods 372 to limit the swing range of the push rods 372. At the same time, in the present embodiment, the limit block 375 is illustrated by a first limit block 375A disposed on the vehicle body 31 and located within the swing range of the first push rod 372A, and a second limit block 375B disposed on the vehicle body 31 and located within the swing range of the second push rod 372B, and the first and second limit blocks 375A and 375B respectively limit the swing of the first push rod 372A and the second push rod 372B. In this embodiment, the first limit block 375A is oppositely arranged on the outside of the stop block 373, so that the first push rod 372A can only move between the first limit block 375A and the stop block 373, and the second limit block 375B is oppositely arranged on the other side of the first limit block 375A and located on the outside of the stop block 373, so that the second push rod 372B can only move between the second limit block 375B and the stop block 373, thereby limiting the swing angles of the first and second push rods 372A and 372B respectively, and further controlling the angle at which the rear wheel frame 33 can rotate. Figure 3 , Figure 4 , Figure 5 In this embodiment, when the rail-type meal delivery vehicle 3 is in use, it runs on a straight section 41, and the controller 36 of the meal delivery vehicle 3 will control the two power motors 341 to run at the same speed, driving the two front wheels 34 to travel on the straight section 41. When the rail-type meal delivery vehicle 3 is about to enter the turning section 42, the controller 36 will control the power motor 341 to drive the two front wheels 34 at different speeds, thereby causing the two front wheels 34 to have a speed difference, which will drive the front wheel frame 32 to swing to the left or right, thereby achieving a turning effect. At the same time, during the turning process of the vehicle body 31, the rear wheel frame 33 will be affected by the force of the turning section 42, so that the rear wheel frame 33 swings with the amplitude of the turning section 42, for example, Figure 5 When the rear wheel frame 33 swings to the right, the rotating wheel 3711 will push the first push rod 372A, causing the first push rod 372A to move outward. At the same time, during the displacement of the first push rod 372A, the return member 374 located on the first push rod 372A and the second push rod 372B will be pulled. At the same time, due to the factor of the stop block 373, the second push rod 372B will be supported by the stop block 373 and be in a fixed state, so that the second push rod 372B will not move toward the first push rod 372A due to the return member 374.

[0061] Still continue with the above, and refer to Figure 6After the rear wheel frame 33 enters the straight section 41, the force exerted by the turning section 42 on the rear wheel frame 33 will disappear, and the first push rod 372A will push the rotating wheel 3711 due to the restoring force of the restoring member 374 to generate a force, which will cause the rotating wheel 3711 to link the linkage rod 371 to operate, and automatically link the rear wheel frame 33 to be aligned, so that the meal delivery vehicle 3 moves forward in a straight direction; in addition, refer to Figure 7 When the rail-type meal delivery vehicle 3 enters another left turning section 42, the rear wheel frame 33 will be restricted by the rail 4 and deflect to the left. At the same time, the rotating wheel 3711 will push the second push rod 372B to move the second push rod 372B outward. At the same time, during the displacement of the second push rod 372B, the return member 374 located on the second push rod 372B and the first push rod 372A will be pulled. At the same time, due to the setting of the stop block 373, the first push rod 372A will be restricted by the stop block 373 and be in a fixed state, so that the second push rod 372B will be moved outward. A push rod 372A will not move toward the second push rod 372B due to the restoring member 374. Then, when the rear wheel frame 33 travels out of the turning section 42, the second push rod 372B will generate a pushing force on the rotating wheel 3711 due to the restoring force of the restoring member 374, which will cause the rotating wheel 3711 to link the linkage rod 371 to operate, and automatically link the rear wheel frame 33 to be aligned, so that the rail-type food delivery vehicle 3 can move more smoothly, and there is no need to set any power source on the rear wheel frame 33, which effectively reduces the manufacturing cost and subsequent maintenance cost.

[0062] See also Figure 8 , Fig. 9 In the second preferred embodiment of the utility model, the rail-type meal delivery vehicle 3 of this embodiment still includes a vehicle body 31 that can run on the track 4, a front wheel frame 32 and a rear wheel frame 33 pivotally connected to the vehicle body 31, two front wheels 34 arranged on the front wheel frame 32, two rear wheels 35 arranged on the rear wheel frame 33, a controller 36 for controlling the rotation of the front wheels 34, and a return device 37 for controlling the actuation of the rear wheel frame 33, and the aforementioned components and the effects to be achieved are the same as those of the first embodiment and will not be described in detail.

[0063] In particular, in the present embodiment, the return device 37 has a restriction group 370 disposed on the vehicle body 31 and linked to the rear wheel frame 33, and a return member 374 for returning the restriction group 370. In the present embodiment, the restriction group 370 is represented by a disc, and the return member 374 is disposed between the vehicle body 31 and the restriction group 370. Therefore, when the rear wheel frame 33 turns, the rear wheel frame 33 will link the restriction group 370 to rotate, thereby pulling the return member 374, so that the return member 374 forms a return force on the restriction group 370. When the rear wheel frame 33 is subjected to an external force, the force will disappear, and the rear wheel frame 33 will also be automatically straightened by the restriction group 370 to ensure that the direction of the rail-type food delivery vehicle 3 is smoothly and accurately controlled.

[0064] To summarize the above, the rail-type food delivery vehicle of the utility model utilizes a return device design provided on the rear wheel frame, and utilizes the return device to control the turning or straight movement of the rear wheel, so that the rear wheel frame does not need to be provided with any power source drive, and can achieve precise control of the direction, so as to maintain the smoothness and accuracy of the forward and turning movements of the rail-type food delivery vehicle, and greatly reduce the subsequent maintenance costs.

[0065] The above description is only for explaining the preferred embodiment of the utility model, and it cannot be used to limit the scope of the implementation of the utility model. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the utility model and the content of the utility model specification should still fall within the scope covered by the utility model patent.

Claims

1. A rail-type meal delivery vehicle, which moves on a track, and the meal delivery vehicle comprises a vehicle body that can run on the track and carry objects, a front wheel frame and a rear wheel frame pivotally connected to the vehicle body, two front wheels arranged on the front wheel frame, two rear wheels arranged on the rear wheel frame, and a controller for controlling the rotation of the two front wheels; characterized in that: The rear wheel frame is provided with a returner, which has a limiting group provided on the vehicle body and linked to the rear wheel frame, and a restoring member for restoring the limiting group. The controller controls the rotation of the two front wheels to produce a speed difference so that the two front wheels produce a turning action. The rear wheel frame is affected by the force generated by the turning of the two front wheels. The rear wheel frame can push the limiting group to move until the external force of the rear wheel frame disappears, and the rear wheel frame is straightened by the returner.

2. The rail-type meal delivery vehicle according to claim 1, characterized in that: The limiting group has a linkage rod connected to the rear wheel frame and capable of swinging with the action of the rear wheel frame, two top rods pivotally mounted on the vehicle body, and a stopper separately arranged on the vehicle body and located inside the two top rods, and the return member can be arranged between the two top rods.

3. The rail-type meal delivery vehicle according to claim 2, characterized in that: A limit block is arranged on the outer side of the second push rod to limit the swing range of the second push rod.

4. The rail-type meal delivery vehicle according to claim 2, characterized in that: The connecting rod is pivotally provided with a rotating wheel.

5. The rail-type meal delivery vehicle according to claim 1 or 2, wherein: Each front wheel is provided with a power motor, and the power motors are respectively controlled by the controller to control the two power motors to operate at the same speed or different speeds.

6. The rail-type meal delivery vehicle according to claim 2, characterized in that: Each push rod has a vertical part pivotally arranged on the vehicle body, and a transverse part extending outward from the end of the vertical part and opposite to the other push rod, and the return member is arranged between the transverse parts of the two push rods.

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