CN213601291U - Goods way structure and sales counter - Google Patents

Abstract

The present disclosure relates to a lane structure and a sales counter. The goods way structure comprises a goods way and at least one driving assembly, wherein the goods way comprises a first shaft, a second shaft and a transmission belt, the first shaft and the second shaft are fixed, the transmission belt is sleeved on the first shaft and the second shaft, the at least one driving assembly comprises at least one driving wheel, and the driving wheel is matched with the first shaft or the second shaft to form a friction pair with the transmission belt, so that the transmission belt can be driven by the driving wheel to move. The friction type transmission provided by the disclosure does not need to arrange a driving assembly on the goods channel, namely, the goods channel does not need to arrange the driving assembly, and the structure of the goods channel is favorably simplified. And the driving wheel is adopted to directly drive the transmission belt through friction transmission, so that a transmission part between the driving wheel and the transmission belt is omitted, and the transmission belt can run efficiently and stably.

Description

Goods way structure and sales counter

Technical Field

The utility model relates to a goods transfer apparatus technical field specifically, relates to a goods way structure and sales counter.

Background

In the related art, the goods passage capable of automatically picking up goods mainly includes a spring type, a conveyor belt type and a push plate type, wherein the spring type has a high requirement on the size of goods, so that the conveyor belt type and the push plate type are more common.

However, in the related art, in the push plate type structure, a power transmission device needs to be arranged on the cargo way, and the occupied space is large. For the conveyor type structure, the drive assembly is also usually provided on the lane, and a large number of motors and corresponding circuit arrangements are required for individually supplying power to each lane, resulting in a complicated structure of the lane.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a goods passage structure and a sales counter, which are used to solve the related technical problems in the prior art.

In order to achieve the above object, the present disclosure provides a cargo way structure, including a cargo way and at least one driving assembly, the cargo way includes a first shaft, a second shaft and a transmission belt, the first shaft and the second shaft are fixed, the transmission belt is sleeved on the first shaft and the second shaft, the at least one driving assembly includes at least one driving wheel, and the driving wheel is matched with the first shaft or the second shaft to construct a friction pair with the transmission belt.

Optionally, the number of the driving assemblies is two, wherein the driving wheel of one of the driving assemblies is matched with the first shaft, and the driving wheel of the other driving assembly is matched with the second shaft.

Optionally, the driving assembly includes two driving wheels, one of the driving wheels is disposed on an upper side of the first shaft or the second shaft, and the other of the driving wheels is disposed on a lower side of a corresponding one of the first shaft or the second shaft.

Optionally, the driving assembly comprises a driving wheel and a driven wheel, one of the driving wheel and the driven wheel is arranged on the upper side of the first shaft, and the other is arranged on the lower side of the first shaft, or one of the driving wheel and the driven wheel is arranged on the upper side of the second shaft, and the other is arranged on the lower side of the second shaft, and the driven wheel is matched with the first shaft or the second shaft to construct a friction pair with the transmission belt.

Optionally, the width of the drive wheel is equal to the width of the conveyor belt.

Optionally, the outer surface of the transmission belt is provided with a first friction material layer, or the outer surface of the driving wheel is provided with a second friction material layer, or the outer surface of the transmission belt is provided with a plurality of pits, or the outer surface of the driving wheel is provided with a plurality of protrusions.

Optionally, the driving assembly further comprises a bracket, the driving wheel is rotatably mounted on the bracket, and the bracket is configured to be capable of moving away from or close to the transmission belt, so that the driving wheel drives the transmission belt or stops driving the transmission belt.

Optionally, the lane structure includes a plurality of lanes, and corresponding ends of the plurality of lanes share one of the driving assemblies.

Optionally, the bracket includes an end frame, a first side frame and a second side frame connected to opposite ends of the end frame, the driving assembly includes two driving wheels, one of the driving wheels is disposed on the upper side of the first shaft or the second shaft, the other driving wheel is disposed on the lower side of the corresponding shaft in the first shaft or the second shaft, and one of the driving wheels is rotatably mounted on the first side frame, and the other driving wheel is rotatably mounted on the second side frame.

Optionally, the driving assembly further includes a first driving mechanism and a second driving mechanism, the first driving mechanism and the second driving mechanism are respectively installed on the support, the driving assembly includes two driving wheels, one of the driving wheels is disposed on the upper side of the first shaft or the second shaft, the other driving wheel is disposed on the lower side of the corresponding shaft in the first shaft or the second shaft, one of the driving wheels is disposed on each of the upper side and the lower side of the first shaft, the first driving mechanism is in transmission connection with one of the driving wheels, and the second driving mechanism is in transmission connection with the other driving wheel.

Optionally, the first driving mechanism includes a first motor, the second driving mechanism includes a second motor, an output shaft of the first motor is in transmission connection with one of the driving wheels, and an output shaft of the second motor is in transmission connection with the other driving wheel.

According to another aspect of the present disclosure, there is provided a sales counter comprising at least one of the above-described lane structures.

Compared with a push plate type and a conveyor belt type in the related art, the friction type transmission provided by the disclosure does not need to arrange a driving component on the goods channel, namely, the goods channel does not need to be provided with the driving component, and the structure of the goods channel is simplified. And the driving wheel is adopted to directly drive the transmission belt through friction transmission, so that a transmission part between the driving wheel and the transmission belt is omitted, and the transmission belt can run efficiently and stably.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic perspective view of a cargo way structure according to one embodiment of the present disclosure;

FIG. 2 is a side view schematic illustration of a lane structure of one embodiment of the present disclosure, wherein the dashed arrows show the conveying direction of the conveyor belt and the solid arrows show the direction of rotation of the drive wheels;

figure 3 is a schematic top view of a lane structure according to one embodiment of the present disclosure.

Description of the reference numerals

100-a cargo way structure; 10-cargo way; 11-a first shaft; 12-a second axis; 13-conveying belt; 20-a drive assembly; 21-a driving wheel; 22-a scaffold; 221-a first side frame; 222-a second side frame; 223-end border; 224-connecting part.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, terms of orientation such as "upper, lower, left, and right" are generally defined based on the direction of the drawing of the drawings, and "inner and outer" refer to the inner and outer of the relevant components. In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are for distinguishing one element from another, and have no order or importance.

As shown in fig. 1 to 3, the present disclosure provides a cargo way structure 100, the cargo way structure 100 includes a cargo way 10 and at least one driving assembly 20, the cargo way 10 includes a first shaft 11, a second shaft 12 and a transmission belt 13, the first shaft 11 and the second shaft 12 are fixed, the transmission belt 13 is sleeved on the first shaft 11 and the second shaft 12, the at least one driving assembly 20 includes at least one driving wheel 21, the driving wheel 21 is engaged with the first shaft 11 to construct a friction pair with the transmission belt 13, so that the driving wheel 21 can drive the transmission belt 13 to move.

In the cargo way structure 100 provided by the present disclosure, the driving wheel 21 cooperates with the first shaft 11 in the process of rotating around its own axis, so as to press the transmission belt 13 located therebetween, and provide friction force to the transmission belt 13 to drive the transmission belt 13 to rotate, thereby enabling the transmission belt 13 to transport cargo, as shown in fig. 1.

The friction type transmission provided by the present disclosure does not require the driving assembly 20 to be provided on the lane 10, that is, the lane 10 itself does not require the driving assembly 20, which is advantageous to simplify the structure of the lane 10, compared to the push plate type and the conveyor belt type in the related art. Moreover, the driving wheel 21 is adopted to directly drive the transmission belt 13 through friction transmission, so that a transmission part between the driving wheel and the transmission belt is omitted, and the transmission belt 13 can run efficiently and stably.

In addition, in a limited space, since parts such as power parts (such as motors) do not need to be arranged on two sides of the width direction of the conveying belt 13 like the existing structure, the conveying surface of the conveying belt 10 is favorably increased, and the space utilization rate of the cargo path structure 100 is favorably improved.

It is to be understood, however, that the first shaft 11 and the second shaft 12 may be secured to suitable components based on the environment in which the cargo way 10 is to be used, and the present disclosure is not limited thereto. For example, when the raceway 10 is used with a container, the first shaft 11 and the second shaft 12 may be fixed to the side plates of the container, respectively.

In order to improve the running stability of the transmission belt 13, as shown in fig. 1 and 2, in an embodiment of the present disclosure, the driving assembly 20 may include two driving wheels 21, wherein one driving wheel 21 is disposed on an upper side of the first shaft 11 or the second shaft 12, and the other driving wheel 21 is disposed on a lower side of a corresponding one of the first shaft 11 or the second shaft 12, that is, at least two driving wheels 21 may be provided, and the upper and lower sides of the first shaft 11 are respectively provided with the driving wheels 21, or the upper and lower sides of the second shaft 12 are respectively provided with the driving wheels 21, and the two driving wheels 21 rotate in the same direction. By means of the two driving wheels 21, the smoothness of the operation of the transmission belt 13 is improved, and the reliability of the operation of the transmission belt 13 is improved. For example, when one of the driving wheels 21 fails, the other driving wheel 21 which normally works can still provide running friction for the output belt, so that the reliability of the normal operation of the transmission belt 13 is ensured.

In the present disclosure, two driving wheels 21 may be provided only on both upper and lower sides of one of the first shaft 11 and the second shaft 12, and two driving wheels 21, that is, four driving wheels 21 may be provided on both upper and lower sides of the first shaft 11 and the second shaft 12. In one embodiment of the present disclosure, as shown in fig. 1 and 2, the cargo way structure may include only one driving assembly 20, and the driving wheels 21 are disposed only on the upper and lower sides of the first shaft 11, and the driving wheels 21 are not disposed at the corresponding positions of the second shaft 12, which is advantageous in that, when the cargo needs to leave the cargo way 10 from one end of the cargo way 10 (e.g., the end where the second shaft 12 is located), the driving assembly 20 is disposed only at one end of the cargo way 10, and no interference is caused to the cargo.

In another embodiment of the present disclosure, there may be two driving assemblies 20, wherein the driving wheel 21 of one driving assembly 20 is engaged with the first shaft 11, the driving wheel 21 of the other driving assembly 20 is engaged with the second shaft 12, and the driving wheels 21 are respectively disposed on the upper and lower sides of the second shaft 12. This embodiment is primarily applicable where goods do not need to exit from both ends of the conveyor 13.

In another embodiment of the present disclosure, the driving assembly 20 may include a driving wheel 21 and a driven wheel, one of the driving wheel 21 and the driven wheel is disposed on the upper side of the first shaft 11, and the other is disposed on the lower side of the first shaft 11, or one of the driving wheel 21 and the driven wheel is disposed on the upper side of the second shaft 12, and the driven wheel is disposed on the lower side of the second shaft 12, and the driven wheel is engaged with the first shaft 11 or the second shaft to construct a friction pair with the transmission belt 13, so that the transmission belt 13 can drive the driven wheel to rotate during the movement. The rotating wheels (the driving wheels and the driven wheels) are arranged on the upper side and the lower side of the first shaft 11 or the second shaft 12, so that the uniformity of stress on the upper side and the lower side of the first shaft 11 or the second shaft 12 is facilitated, and the stability of conveying goods by a goods way structure is facilitated to be kept.

In order to ensure that the driving wheel 21 can provide sufficient friction force to the conveyor belt, optionally, in an embodiment of the present disclosure, the width of the driving wheel 21 may be equal to the width of the conveyor belt 13 to increase the contact area of the driving wheel 21 and the conveyor belt 13 as much as possible, so as to increase the friction force as much as possible to ensure the reliability of the friction transmission.

It should be noted that the present disclosure does not limit the relationship between the width of the driving wheel 21 and the width of the conveying belt 13. In other embodiments, the width of the drive wheel 21 may be less than the width of the conveyor belt 13 or greater than the width of the conveyor belt 13.

Alternatively, in order to further improve the reliability of the friction transmission of the driving wheel 21 with the conveyor belt, in one embodiment of the present disclosure, the outer surface of the conveyor belt may be provided with a first friction material layer, or the outer surface of the driving wheel 21 may be provided with a second friction material layer, i.e., in this embodiment, the conveyor belt and the driving wheel 21 may be constructed of a base inner layer such as rubber plus a friction material layer.

Like this, through the cooperation of first friction material layer and second friction material layer, do benefit to the coefficient of friction who increases both to be favorable to improving the frictional force between drive wheel 21 and the transmission band 13, thereby promote friction drive's reliability.

The present disclosure does not limit the specific material of the first friction material layer and the second friction material layer, and for example, may be a carbon fiber friction material, an asbestos cloth friction material, or the like.

Alternatively, in order to further improve the reliability of the friction transmission of the driving wheel 21 with the conveyor belt, in one embodiment of the present disclosure, the outer surface of the conveyor belt may be provided with a plurality of dimples, or the outer surface of the driving wheel 21 may be provided with a plurality of protrusions. Like this, through a plurality of pits and a plurality of protruding cooperation, do benefit to the coefficient of friction that increases both to be favorable to improving the frictional force between drive wheel 21 and the transmission band 13, thereby promote friction drive's reliability.

As shown in fig. 1 and 2, in one embodiment of the present disclosure, the driving assembly 20 further includes a bracket 22, the driving wheel 21 is rotatably mounted to the bracket 22, and the bracket 22 is configured to be able to move away from or close to the transmission belt 13 so that the driving wheel 21 drives the transmission belt 13 or stops driving the transmission belt 13. Specifically, when goods are to be transported, the mounting bracket 22 may be brought into position adjacent the conveyor belt 13 and the drive wheel 21 and the corresponding shaft (e.g., the first shaft 11 shown in fig. 1) may be caused to press against the conveyor belt 13 therebetween. Thus, when the driving wheel 21 rotates, the driving wheel 21 provides a driving friction force to the transmission belt 13, and the transmission belt 13 is moved by the friction force. When it is desired to stop the movement of the conveyor belt 13, the mounting bracket 22 can be moved away from the conveyor belt 13 to a position to remove the pressing force of the driving wheel 21 and the conveyor belt 13, thereby removing the driving friction and stopping the movement of the conveyor belt 13.

Based on this, since the driving unit 20 can be away from the cargo path 10, when it is detected that the cargo falls off one end (left end in the direction of the drawing shown in fig. 2) of the conveyor belt 13 during the conveyance of the cargo by the conveyor belt 13, the rotation of the driving wheel 21 is stopped, and the application of the friction force to the conveyor belt 13 is stopped, so that the movement of the conveyor belt 13 is stopped. At this time, the support 22 may be moved away from the lane 10 to load the lane 10 from the other end (right end in the drawing direction shown in fig. 2) of the conveyor belt 12. In addition, when there is more than one lane 10 and there is a need to transfer goods in other lanes 10, the driving assembly 20 can be moved to other lanes 10 to drive the corresponding lane 10 to transfer goods.

In one embodiment of the present disclosure, the cargo way structure may include a plurality of cargo ways 10, and corresponding ends (i.e., ends having the same direction) of the plurality of cargo ways 10 share one driving assembly 20, so as to save the number of driving assemblies 20 and save cost.

The present disclosure is not limited to a particular configuration of the structure of the lane 10, and may have any suitable configuration. Alternatively, as shown in fig. 1 and 2, in one embodiment of the present disclosure, the support 22 may include an end frame 223, and a first side frame 221 and a second side frame 222 connected to opposite ends of the end frame 223. The driving assembly 20 includes two driving wheels 21, wherein one driving wheel 21 is disposed on the upper side of the first shaft 11 or the second shaft 12, and the other driving wheel 21 is disposed on the lower side of the corresponding one of the first shaft 11 or the second shaft 12, and one driving wheel 21 is rotatably connected to the first side frame 221, and the other driving wheel 21 is rotatably mounted to the second side frame 222. This support 22 simple structure, moreover, because two drive wheels 21 are installed respectively in two frames, to support 22, when two drive wheels 21 rotated, support 22's equilibrium was better than the technical scheme who sets up two drive wheels 21 simultaneously in the frame of same side.

To facilitate avoiding the conveyor belt and the first shaft 11 or the second shaft 12, and to reduce the overall weight of the frame 22, as shown in fig. 1 and 2, in one embodiment of the present disclosure, the first side frame 221 and the second side frame 222 may have a height dimension smaller than that of the end frame 223, and the first side frame 221 may be connected to a lower portion of one end of the end frame 223, and the second side frame 222 may be connected to an upper portion of the other end of the end frame 222.

In addition, the specific structures of the first side frame 221, the second side frame 222, and the end frame 223 are not limited in the present disclosure, and may be a plate structure, a hollow structure may be provided on the plate structure to facilitate the light weight of the bracket, or any suitable structure.

In an embodiment of the present disclosure, the driving assembly 20 may further include a first driving mechanism and a second driving mechanism, the first driving mechanism and the second driving mechanism are respectively mounted on the bracket 22, the driving assembly 20 includes two driving wheels 21, one driving wheel 21 is disposed on the upper side of the first shaft 11 or the second shaft 12, the other driving wheel 21 is disposed on the lower side of the corresponding shaft of the first shaft 11 or the second shaft 12, the first driving mechanism is in transmission connection with one driving wheel 21, and the second driving mechanism is in transmission connection with the other driving wheel 21.

In the present embodiment, since the first drive mechanism and the second drive mechanism are integrated on the carriage 22, the power member can move together with the carriage 22. In this way, when the driving assembly 20 is moved to act on the conveyor belt 13 of another lane 10, it can act directly on another lane 10. Therefore, the solution of the present embodiment is advantageous in reducing the number of driving mechanisms used, compared to the solution in which the driving mechanism is provided separately for each lane 10.

Alternatively, in one embodiment of the present disclosure, the first driving mechanism may include a first motor, and the second driving mechanism may include a second motor, wherein an output shaft of the first motor is in transmission connection with one of the driving wheels 21, and an output shaft of the second motor is in transmission connection with the other driving wheel 21. The driving wheel 21 is directly driven to rotate by the output shaft of the motor, and the structure is simple.

It is to be understood that the present disclosure is not limited to a specific type of power member, and in other embodiments of the present disclosure, the power member may further include a cylinder, a linear motor, etc. in cooperation with a suitable transmission assembly to convert the linear motion of the cylinder or the linear motor into the rotational motion of the driving wheel 21.

As shown in fig. 1 and 2, in an embodiment of the present disclosure, the support frame 22 may be provided with a connecting portion 223, and the connecting portion 223 is used for being in transmission connection with a driving device, so that the support frame 22 is far away from or close to the cargo passage 10 under the action of the driving device. That is, the driving assembly 20 is connected to an external driving device through the connection portion 223 to be conveniently spaced apart from the lane 10 to facilitate loading of the lane 10 or to be close to the lane 10 to drive the conveyor 13 of the lane 10.

The present disclosure does not limit the specific structure of the connection part 223, for example, the connection part 223 may be a chuck to facilitate the jaw snap-fit of the external driving device, or the connection part 223 may be a magnetic member to magnetically connect with the driving part of the driving device.

According to another aspect of the present disclosure, there is provided a sales counter comprising the above-mentioned raceway 10.

Alternatively, the sales counter may comprise a plurality of lanes 10, and the sales counter may further comprise a main driving apparatus for driving the driving assembly 20 described above to be close to or away from the lanes 10, facilitating the driving assembly 20 to be away from the lanes 10 for facilitating loading of the lanes 10, or close to the lanes 10 for driving the conveyor 13 of the lanes 10.

The driving assembly 20 can be moved to a corresponding position of each lane 10 (e.g. the right end position of the lane 10 shown in fig. 2) under the action of the driving device, so that the driving assembly 20 can utilize the driving wheel 21 to act on the transmission belt 13 of the corresponding lane 10, thus, an independent driving assembly 20 is not required to be arranged for each lane 10, and the structure of the sales counter can be greatly simplified.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (12)

1. A cargo way structure, characterized by, including cargo way (10) and at least one drive assembly (20), cargo way (10) includes first axle (11), second axle (12) and transmission band (13), first axle (11) with second axle (12) are fixed, transmission band (13) cover is located first axle (11) with second axle (12), at least one drive assembly (20) includes at least one drive wheel (21), drive wheel (21) with first axle (11) or second axle (12) cooperate, in order to constitute friction pair with transmission band (13).

2. The structure of claim 1, wherein said drive assemblies (20) are two, wherein the drive wheel (21) of one of said drive assemblies (20) is engaged with said first shaft (11) and the drive wheel (21) of the other of said drive assemblies (20) is engaged with said second shaft (12).

3. The structure of claim 1, wherein said drive assembly (20) comprises two drive wheels (21), one of said drive wheels (21) being arranged on the upper side of said first shaft (11) or said second shaft (12) and the other of said drive wheels (21) being arranged on the lower side of the corresponding one of said first shaft (11) or said second shaft (12).

4. The walkway structure of claim 1, wherein the drive assembly (20) includes a drive wheel (21) and a driven wheel,

one of the driving wheel (21) and the driven wheel is arranged on the upper side of the first shaft (11), the other is arranged on the lower side of the first shaft (11), or,

one of the drive wheel (21) and the driven wheel is disposed on the upper side of the second shaft (12), and the other is disposed on the lower side of the second shaft (12),

the driven wheel cooperates with the first shaft (11) or the second shaft (12) to form a friction pair with the transmission belt (13).

5. The shed structure as claimed in claim 1, characterized in that the width of the drive wheel (21) is equal to the width of the conveyor belt (13).

6. The walkway structure according to claim 1, wherein the outer surface of the conveyor belt (13) is provided with a first layer of friction material, or the outer surface of the drive wheel (21) is provided with a second layer of friction material, or,

the surface of transmission band (13) is provided with a plurality of pits, or, the surface of drive wheel (21) is provided with a plurality of archs.

7. The walkway structure of any one of claims 1, 2, 4-6, wherein the drive assembly (20) further includes a bracket (22), the drive wheel (21) is rotatably mounted to the bracket (22), and the bracket (22) is configured to be movable away from or toward the conveyor belt (13) to enable the drive wheel (21) to drive the conveyor belt (13) or to stop driving the conveyor belt (13).

8. The lane structure of claim 7, comprising a plurality of lanes (10), corresponding ends of the lanes (10) sharing one of the drive assemblies (20).

9. The cargo way structure according to claim 7, wherein the bracket (22) comprises an end frame (223), a first side frame (221) and a second side frame (222) connected at opposite ends of the end frame (223),

the driving assembly (20) comprises two driving wheels (21), wherein one driving wheel (21) is arranged on the upper side of the first shaft (11) or the second shaft (12), the other driving wheel (21) is arranged on the lower side of the corresponding shaft in the first shaft (11) or the second shaft (12), one driving wheel (21) is rotatably arranged on the first side frame (221), and the other driving wheel (21) is rotatably arranged on the second side frame (222).

10. The cargo way structure according to claim 7, wherein the drive assembly (20) further comprises a first drive mechanism and a second drive mechanism, the first drive mechanism and the second drive mechanism being respectively mounted to the brackets (22),

the drive assembly (20) comprises two drive wheels (21), wherein one drive wheel (21) is arranged on the upper side of the first shaft (11) or the second shaft (12), the other drive wheel (21) is arranged on the lower side of the corresponding shaft in the first shaft (11) or the second shaft (12),

the first driving mechanism is in transmission connection with one of the driving wheels (21), and the second driving mechanism is in transmission connection with the other driving wheel (21).

11. The structure of claim 10, wherein said first drive mechanism comprises a first motor and said second drive mechanism comprises a second motor, an output shaft of said first motor being drivingly connected to one of said drive wheels (21) and an output shaft of said second motor being drivingly connected to the other of said drive wheels (21).

12. A sales counter, characterized in that the sales counter comprises a raceway arrangement (100) according to any of claims 1-11.

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