CN111824714A - Conveyor roller assembly for a conveyor system and belt conveyor system comprising same - Google Patents

Conveyor roller assembly for a conveyor system and belt conveyor system comprising same Download PDF

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Publication number
CN111824714A
CN111824714A CN201910309487.4A CN201910309487A CN111824714A CN 111824714 A CN111824714 A CN 111824714A CN 201910309487 A CN201910309487 A CN 201910309487A CN 111824714 A CN111824714 A CN 111824714A
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CN
China
Prior art keywords
end portion
shaft
conveyor
recess
axial end
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Pending
Application number
CN201910309487.4A
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Chinese (zh)
Inventor
朱广滕
M·盖姆
S·霍华德
孙徐
胡万川
J·雅各布
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Mettler Toledo Safeline Ltd
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Mettler Toledo Safeline Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Mettler Toledo Safeline Ltd filed Critical Mettler Toledo Safeline Ltd
Priority to CN201910309487.4A priority Critical patent/CN111824714A/en
Publication of CN111824714A publication Critical patent/CN111824714A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • B65G39/02—Adaptations of individual rollers and supports therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/44—Belt or chain tensioning arrangements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

The present invention relates to a conveyor roller assembly for a conveyor system, comprising: a feed roller having a cylindrical roller body and an axial shaft, the shaft having a first axial end portion and a second axial end portion; a support structure for supporting a shaft of a conveyor roller, having two side members laterally opposite to each other, each side member including a recess, the two recesses being laterally opposite to each other, each recess being recessed in an up-down direction from an upper edge portion of the corresponding side member, such that each recess includes: a free end portion near an upper edge portion of the support structure to allow one of the axial end portions of the shaft to be inserted from above; a closed end portion for supporting the embedded axial end portion of the shaft; and a connecting portion connecting the free end portion and the closed end portion, wherein, for each recess, the free end portion is longitudinally offset relative to the closed end portion in a direction opposite to an operating force that biases the respective axial end portion of the shaft against the edge portion of the recess.

Description

Conveyor roller assembly for a conveyor system and belt conveyor system comprising same
Technical Field
The present invention relates to a conveyor roller assembly for a conveyor system, the assembly comprising: a feed roller having a cylindrical roller body and an axial shaft, the shaft having a first axial end portion and a second axial end portion; a support structure for supporting a shaft of a conveyor roller, the support structure having two side members laterally opposite to each other, each side member including a recess, the two recesses being laterally opposite to each other, each recess being recessed in an up-down direction from an upper edge portion of the corresponding side member such that each recess includes: a free end portion near an upper edge portion of the support structure to allow one of the axial end portions of the shaft to be inserted from above; a closed end portion for supporting the embedded axial end portion of the shaft; and a connecting portion connecting the free end portion and the closed end portion; and to a belt conveyor system comprising such a conveyor roller assembly.
Background
Conveyor systems are used in various industries to move objects from one location to another. These conveyor systems are typically fitted to existing production lines and have a front and rear conveyor system. Such arrangements are used in the food industry, for example, in the form of belt conveyor systems. There, a belt, typically a food-grade belt in the form of an endless belt, is fed around a number of different rollers. Such rolls may include feed, take-off, tension, tracking and drive rolls.
After a period of use, the conveyor system may need to be serviced. In the case of belt conveyor systems, this includes cleaning, maintenance or replacement of the belt. For this reason, the belt must be detached from the conveyor system, which requires the removal of at least those conveyor rollers around which the conveyor belt is fed. Removal of the rollers should be accomplished as quickly and easily as possible so that the belt can be removed quickly and easily.
In view of the above, several ideas have been implemented to facilitate the removal of conveyor rolls from conveyor systems.
To enable quick removal of the transport roller, US 8,607,968B2 discloses a roller mounted on a spindle from which the roller can slide down when the lever is rotated to the release position. However, this arrangement requires many parts and is therefore complicated.
Another possibility is to mount the shaft of the roller detachably in a vertically oriented slot as described in GB 2317375a 1. However, since the grooves are vertical, it is possible that the rollers are removed from the grooves due to an operating force, such as a driving force, applied to the belt in operation.
This problem is overcome by the arrangement proposed in US 3,509,978. This document discloses a vertical slot which allows the shaft of the roller to be removably clamped into the slot. However, a certain force is required to remove the shaft from the groove. This complicates disassembly and risks damaging the shaft or the groove.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to: the above type of conveyor roller assembly is further developed, enabling the conveyor roller to be easily mounted and dismounted, and enabling the roller to be stably supported during use; and to provide a belt conveyor system comprising such a conveyor roller assembly.
According to the invention, this object is achieved in that: for each recess, the free end portion is longitudinally offset relative to the closed end portion in a direction opposite to an operating force that biases the respective axial end portion of the shaft against the edge portion of the recess.
Since the free end portion is longitudinally offset relative to the closed end portion in a direction opposite to an operating force which biases the respective axial end portion of the shaft against the edge portion of said recess, the transport roller is prevented from being removed from the recess during operation. The technical effect can be understood as follows: during operation, an axial end portion of the conveyor roller is supported by the closed end portion of the recess. To remove the conveyor roller, the axial end portion must be moved towards the free end portion. However, these free end portions are longitudinally offset in a direction opposite to the operating force. That is, a reaction force in the direction opposite to the operation force must be applied to move the axial end portion located at the closed end portion toward the free end portion.
The shaft is supported by a support structure. The support structure may be attachable to the conveyor system. Alternatively, the support structure may be an integral part of the conveyor system. The support structure comprises two side members laterally opposite each other in a direction crossing the conveying direction of the conveyor system. The side members support the conveying roller at both axial end portions thereof. Each side member includes an upper edge portion that is located adjacent goods conveyed by the conveyor system during use.
A recess is provided in each of the side members. Each recess is recessed from an upper edge portion of the corresponding side member such that the first and second axial end portions of the shaft can be fitted into the corresponding recess in the up-down direction. In other words, each recess has a free end portion that provides an inlet aperture for a respective axial end portion of the shaft. Further, each recess has a closed end portion. When the shaft is inserted in the recess, the axial end portion of the shaft abuts against the edge of the respective closed end portion and is thus supported by the closed end portion. Further, each recess is provided with a connecting portion connecting the free end portion and the closed end portion. In other words, when the axial end portion of the shaft is embedded in the recess, the shaft passes from the free end portion to the closed end portion through the connecting portion.
During use of the conveyor roll assembly, an operating force is applied to an axial end portion of the shaft of the conveyor roll. If the conveyor system is a belt conveyor system, a driving force is applied to the belt so as to be transmitted to the axial end portions of the shafts of the conveying rollers. In one example, the tape may be fed around a transport roller. Typically, the belt is under tension during use. This results in a force being applied to the axial end portion of the shaft, and thus a torque being applied to the conveying roller. If the recess is formed such that the line of connection between the free end portion and the closed end portion is perpendicular to the applied force, i.e. if the free end portion is not longitudinally offset relative to the closed end portion in a direction opposite to the operation, there is a risk that the transport roller will be dislodged from the recess due to the applied torque. Thus, according to the invention, the free end portion of the recess is longitudinally offset with respect to the closed end portion in a direction opposite to the operating force. This arrangement prevents the conveying roller from being removed from the recess. In an example in which the conveyor system is a belt conveyor system and the belt is fed around the conveying rollers, as described above, tension is applied to the axial end portions of the shafts. Since the free end portion is longitudinally offset from the closed end portion where the axial end portion of the shaft is located, the conveyor roller must be moved against this tension to move the conveyor roller out of the recess. This prevents the axial end portion of the shaft from being removed from the recess.
In one embodiment according to the invention, the two recesses may have the same shape.
According to another embodiment of the invention, the roller body is rotatable relative to the shaft. In this case, the axial end portion of the shaft may be adapted to allow the shaft to be non-rotatably arranged within the recess relative to the support structure. In other words, during use, the shaft does not rotate relative to the support structure, but only the roller body rotates about the shaft and thus relative to said support structure. This allows particularly stable support of the axial end portion of the conveyor roller.
In one embodiment of the invention, the axial end portion of the shaft and the closed end portion of the recess may be formed to be fitted with each other so that the axial end portion of the shaft and the recess are engaged non-rotatably relative to each other. For example, the axial end portion of the shaft may be formed as: so that a portion of their profile engages the edge portion of the respective closed end portion when the shaft is inserted into the recess. This makes it possible to stably support the conveying roller in a very simple manner.
In another embodiment of the present invention, the edge portion of the connecting portion of the recess may extend along a straight line inclined with respect to the up-down direction between the free end portion and the closed end portion. In this arrangement, the inclination angle α of the straight line with respect to the up-down direction may be α ≧ 5 °, preferably α ≧ 10 °, more preferably α ≧ 15 °. This form of recess enables the axial end portion of the shaft to be easily inserted and removed.
In an alternative embodiment of the present invention, the edge portion of the connection portion of the recess may include a bent portion that is bent in the direction of the operating force. This bending makes it possible to maintain the positioning of the axial end portion of the shaft at the closed end portion even if a very strong operating force is applied to the shaft.
In one embodiment of the invention, the transport roller may be a feed roller or a discharge roller. The feed roller or the discharge roller is located at one of the end portions of the conveyor system in the conveying direction. In case the operating force applied to the feed roller or the discharge roller is directed towards the end portion opposite to the end portion where the feed roller or the discharge roller is located, i.e. towards the middle of the conveyor system, the closed end portion is longitudinally offset towards the middle of the conveyor system with respect to the free end portion. This has another advantage: that is, if the conveyor roller assembly is used in a conveyor system that is interposed between a front and rear conveyor system, the form of the pocket according to the present invention moves the conveyor rollers supported at the closed end portion toward the middle of the conveyor, i.e., away from the front or rear conveyor, thereby allowing them to be inserted into and removed from the pocket without interfering with the front or rear conveyor system.
According to another aspect of the present invention, there is provided a belt conveyor system comprising a conveyor roller assembly and a conveyor belt as described above. The conveyor belt may be an endless belt. The conveyor belt may be a polyurethane belt or a modular belt.
The synergistic effect is achieved when the above-described conveyor roller assembly is used in combination with a tensioning assembly of a belt conveyor system, the tensioning assembly comprising: a tension roller comprising a roller body and an axial shaft, the shaft comprising first and second axial end portions, the tension roller being adapted to allow a conveyor belt of the belt conveyor system to pass around at least a portion of its circumference; a support frame for supporting the tensioning roller on first and second axial end portions of the shaft, wherein the tensioning roller is movable relative to the support frame between an operating position for tensioning the conveyor belt and a release position for releasing tension applied to the conveyor belt, wherein the tensioning assembly further comprises abutment means hinged to said support frame and adapted to move between a first position in which abutment portions of said abutment means abut against first and second axial end portions of the shaft of the tensioning roller to position said tensioning roller in the operating position relative to said support frame and a second position in which said abutment means are withdrawn from the first and second axial end portions of the shaft of the tensioning roller so that the tensioning roller is movable to the release position.
The tensioning assembly has a simple arrangement and allows for simple operation, thereby facilitating tensioning of the belt.
In belt conveyor systems, the belt is typically wound around two end rollers located at respective upstream and downstream end portions of the belt conveyor system in the conveying direction. The end rollers may be attached to a support frame. To tension the belt, a tension roller may be used. The tension roller includes a roller body and a shaft. The roller body may have a cylindrical shape. Typically, the tension roller is disposed somewhere between the end rollers and supported by a support frame. The belt is wrapped around at least a portion of the circumference of the tension roller. The tension roller is movable relative to the support frame to apply tension to the belt or to release tension applied to the belt. The tension roller may be used alone to apply tension to the belt, or it may cooperate with one or more other rollers.
The tensioning assembly further comprises abutment means hinged to said support frame. The abutment device is pivotable relative to the support frame. Then, the pivotal movement of the abutment device is converted into a movement of the abutment device between a first position in which the abutment portion of the abutment device abuts against the axial end portion of the shaft of the tension roller to position the tension roller in the operative position relative to the support frame and a second position in which the abutment device is withdrawn from the axial end portion of the shaft of the tension roller so that the tension roller is movable to the release position. Thus, the operation of the abutment device allows for an easy switching between the first and second positions of the abutment device, i.e. between the operating position (tensioning position) and the release position. This is very useful when the roller is to be cleaned or removed, since the tension applied to the belt can be released by a simple movement of the abutment device.
In one example, the abutment device may be hinged to the support frame by a pivot, and the length of a lever arm of the abutment device extending between the pivot and the abutment portion may be adjustable. This arrangement allows the operating position to be adjusted relative to the support bracket, thereby adjusting the tension applied to the belt.
In another example, the lever arm may include a bushing having an internal thread and a plunger received in the bushing, the plunger having an external thread that mates with the internal thread such that rotation of the bushing and plunger relative to each other causes them to linearly displace relative to each other. This telescopic arrangement allows for a very simple adjustment of the length of the rod by simple rotation of the bush and plunger relative to each other. The abutment portion may be connected to or may be located on the plunger such that the operating position of the abutment device may be adjusted.
In a further example, the support frame may comprise first and second side walls laterally opposite each other, and the abutment means may comprise first abutment means hinged to the first side wall and second abutment means hinged to the second side wall. In this arrangement, one abutment means is provided for each of the first and second axial end portions of the shaft. When combining this arrangement with a lever arm having an adjustable length as described above, tracking of the belt is simplified. I.e. the abutment device is first moved to the second position. There, the length of the lever arms of the first and second abutment devices is adjusted to be the same. Then, the two abutment devices are moved to the first position. This allows the same tension to be applied to both sides of the belt conveyor system. If the first and second abutment means are moved back to the release position, it is easy to apply the same tension to the belt as before, since the length of the lever arm is fixed. In other words, by moving the first and second abutment devices back to the first position, the same tension as before can be applied to the belt.
In another example, the abutment device may comprise a locking device for locking the length of the lever arm. This simplifies the repeated application of the same tension to the conveyor belt.
In yet another example, the first and second side walls may each comprise a groove extending in the direction of the connection line between the first position and the second position, and said axial end portion of the shaft of the tensioning roller may be movable in the groove relative to the support frame. This is a particularly simple arrangement which allows the tensioning roller to move relative to the support frame.
In another example, the roller body may rotate relative to the shaft. This is particularly useful in the case where the axial end portions of the tension roller are movable in slots provided in the side walls of the cage. The shaft may then be fixed against relative rotation with respect to the slot. In this way, the shaft is supported by the support frame in a very reliable manner.
In yet another example, the abutment device may be provided with a scale display, which allows the length of the lever arm to be read. The scale display is a display similar to a micrometer or vernier, allowing a particularly fine adjustment of the length of the lever arm. Furthermore, this arrangement is particularly useful when the first and second abutment devices are hinged to the two side walls of the support frame, respectively, since it is generally not possible to see or reach the first and second abutment devices at the same time due to the width of the belt conveyor system. In this case, the scale display helps to apply equal tension to both sides of the tape, thereby facilitating tracking.
According to another example, the bushing may include evenly spaced and circumferentially arranged recesses for receiving O-rings to read the length of the lever arm. In this example, the bush is circumferentially covered by a cylindrical sheath, one axial end of which is connected to the plunger. The opposite free axial end is annular. The number of O-rings covered by the sheath varies depending on the relative axial position of the plunger with respect to the bushing. Thus, the number of O-rings beyond the annular axial end, visible from the outside on the circumference of the bushing, varies according to the length of the lever arm. This allows the length of the lever arm to be read in a very simple manner. The O-rings may be provided in different colors to further facilitate adjustment of the length of the lever arm.
In another example, the abutment device may further comprise a handle for moving the abutment device between its first and second positions. A handle may extend from a pivot of the hinged abutment device to the support bracket in a direction opposite to the direction of extension of a lever arm extending between the pivot and the abutment portion. The handle is pivotable in an up-and-down direction to move the lever arm between the first and second positions.
The combination of the tensioning assembly and the conveyor roller assembly allows a particularly quick and simple release of the conveyor roller around which the feed belt is fed. Typically, it is cumbersome to remove such conveyor rollers from the belt conveyor assembly. However, if the conveyor roll assembly according to the invention is used in combination with the above-described tensioning assembly, a quick and easy release of the conveyor roll can be achieved as follows: first, the tension assembly is used to release the tension applied to the belt by moving the tension roller to its release position. The conveyor roller can then be removed from the support structure by moving the conveyor roller out of the recess in an upward direction. This removal is easy because the operating force applied to the transport roller due to the tensioning of the belt is no longer present. However, the tension assembly may also be used without the conveyor roller assembly and provide the advantageous effects described above.
Drawings
In the following description, the invention will be explained in more detail by way of example with reference to the accompanying set of drawings. In the drawings, there is shown in the drawings,
figure 1 is a side view of a portion of a conveyor roll assembly according to the present invention,
figure 2 is a side view of a portion of a side member of the conveyor roller assembly of figure 1,
figure 3 is a partial perspective view of a conveyor roller of the conveyor roller assembly shown in figure 1,
FIG. 4 is a side view of another side member of the conveyor roll assembly according to the present invention.
Detailed Description
Figure 1 is a side view of a portion of a conveyor roll assembly 1 according to the present invention. The conveyor roller 10 including the roller body 12 and the shaft 14 is supported by side members 22 (only one side member 22 is shown in fig. 1) of the support structure 20. To support the shaft 14, a recess 30 is formed in the side member 22. The recess 30 is recessed from the upper edge portion 24 of the side member 22 in the up-down direction UD. The recess 30 extends from the free end portion 32 to the closed end portion 34 via the connecting portion 36. The contour of the recess 30 defines an edge portion 38. The recess 30 is provided such that an axial end portion (first axial end portion 14a in fig. 1) of the shaft 14 can be embedded from the free end portion 32 to the closed end portion 34 via the connecting portion 36. In fig. 1, the axial end portion 14a of the shaft 14 is closed againstThe edge portion of the end portion 34 is thereby supported in the recess 30. The conveyor roller assembly 1 is for a conveyor system. During use of the conveyor system, an operating force F is applied to the shaft 14. If, for example, the conveyor system is a belt conveyor system, the belt is fed around the conveyor rollers 10. With the belt under tension, the belt is in direction DFA force F shown in fig. 1 is applied. The operating force F results in a torque applied to the shaft 14. To prevent the conveying roller 10 from moving out of the recess 30, the free end portion 32 is oriented in the direction D in relation to the operating force FFOpposite direction DOFLongitudinally offset with respect to the closed end portion 34.
Fig. 2 is a side view of a part of the side member 22 of the conveyor roller assembly 1 of fig. 1. The drive roller 10 is removed from the recess 30. As described above, the recess 30 extends from the free end portion 32 to the closed end portion 34 via the connecting portion 36. In the embodiment shown in fig. 2, the edge portion 36a of the connecting portion 36 extends along a straight line L between the free end portion 32 and the closed end portion 34. The line L is inclined at an angle α with respect to the up-down direction UD.
Fig. 3 is a partial perspective view of the conveyor roller 10 of the conveyor roller assembly 1 shown in fig. 1. As described above, the conveying roller 10 includes the roller body 12 and the shaft 14. According to the conveying roller 10 of the present embodiment, the roller body 12 is rotatable with respect to the shaft 14. The shaft 14 of the conveyor roller 10 is fixed against relative rotation with respect to the support structure 20 by: the axial end portions 14a, 14b of the shaft 14 and the closed end portion 34 of the recess 30 are formed to interfit with each other so that the axial end portions 14a, 14b of the shaft and the recess 30 can be engaged non-rotatably relative to each other.
Fig. 4 is a side view of the other side member 22 of the conveying roller assembly 1 according to the present invention. The side member 22 of fig. 4 differs from that of fig. 1 and 2 in the form of the recess 30. As in the above-described embodiment, the recess 30 is recessed from the upper edge portion 24 of the side member 22 in the up-down direction UD. The recess 30 extends from the free end portion 32 via a connecting portion 36 towards a closed end portion 34, the closed end portion 34 being provided for supporting one of the axial end portions 14a, 14b of the shaft 14. However, in contrast to the recess 30 of the side member 22 of the embodiment of fig. 1 and 2, the edge portion 36a of the connecting portion 36 of the recess 30 does not extend along a straight line, but comprises a bendA curved portion C which is curved in the direction of an operating force F which is applied to the axial end portions 14a, 14b of the shaft 14 during use of the conveyor system. In this way, the closed end portion 34 is in the direction D opposite to the operating force F in the longitudinal directionOFAnd is further offset with respect to the closed end portion 34. Therefore, even if a strong force F is applied to the shaft 14, the shaft 14 does not move out of the recess 30.
List of reference numerals
1 feed roller assembly
10 conveying roller
12 roller body
14 shaft
14a first axial end portion
14b second axial end portion
20 support structure
22 side member
24 upper edge portion
30 recess
32 free end portion
34 closed end portion
36 connecting part
36a edge portion of the connecting portion
38 edge portion
100 conveyor belt
F operating force
DOFIn the opposite direction of the operating force F
DFDirection of operating force F
L line
UD vertical direction
Angle of inclination alpha
C-bend section

Claims (10)

1. A conveyor roller assembly (1) for a conveyor system, the conveyor roller assembly (1) comprising:
a conveyor roller (10) having a cylindrical roller body (12) and an axial shaft (14), the shaft (14) having a first axial end portion (14a) and a second axial end portion (14b),
-a support structure (20) for supporting a shaft (14) of a conveyor roller (10), the support structure (20) having two side members (22) laterally opposite each other, each side member (22) comprising a recess (30), the two recesses (30) being laterally opposite each other, each recess (30) being recessed in an up-down direction (UD) from an upper edge portion (24) of the respective side member (22), such that each recess (30) comprises: a free end portion (32) in the vicinity of an upper edge portion (34) of the support structure (20) to allow one of the axial end portions (14a, 14b) of the shaft (14) to be inserted from above; a closed end portion (34) for supporting the embedded axial end portions (14a, 14b) of the shaft (14); and a connecting portion (36) connecting the free end portion (32) and the closed end portion (34),
it is characterized in that the preparation method is characterized in that,
for each recess (30), the free end portion (32) is in a direction (D) opposite to the operating force (F)OF) Longitudinally offset with respect to the closed end portion (34), said operating force (F) biasing the respective axial end portion (14a, 14b) of the shaft (14) against an edge portion (38) of said recess.
2. A conveyor roller assembly according to claim 1, wherein said two recesses (30) have the same shape.
3. A conveyor roller assembly according to claim 1 or 2, wherein the roller body (12) is rotatable relative to the shaft (14).
4. A conveyor roller assembly according to claim 3, wherein said axial end portions (14a, 14b) of said shaft (14) are adapted to allow non-rotatable arrangement of said shaft (14) within said recess (30) with respect to said support structure (20).
5. A conveyor roller assembly according to claim 4, wherein the axial end portions (14a, 14b) of the shaft (14) and the closed end portion (34) of the recess (30) are reciprocally formed with each other so as to make the axial end portions (14a, 14b) of the shaft (14) and the recess (30) non-rotatably engaged.
6. A conveyor roller assembly according to any one of the preceding claims, wherein the edge portions (36a) of the connecting portions (36) of the recesses (30) extend along a straight line (L) inclined with respect to the up-down direction (UD) between the free end portion (32) and the closed end portion (34).
7. A conveyor roller assembly according to claim 6, wherein the angle of inclination (α) of the straight line (L) with respect to the up-down direction (UD) is α ≧ 5 °, preferably α ≧ 10 °, more preferably α ≧ 15 °.
8. Conveying roller assembly according to any one of claims 1 to 4, wherein the edge portion (36a) of the connecting portion (36) of the recess (30) comprises a curved portion (C) in the direction (D) of the operating force (F)F) And is bent upwards.
9. A conveyor roll assembly according to any one of the preceding claims, wherein the conveyor roll (10) is a feed roll or a discharge roll.
10. A belt conveyor system comprising a conveyor roller assembly (1) according to any one of the preceding claims and a conveyor belt (100).
CN201910309487.4A 2019-04-17 2019-04-17 Conveyor roller assembly for a conveyor system and belt conveyor system comprising same Pending CN111824714A (en)

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