Belt conveyor, housing therefor, and belt conveyor system

Abstract

This utility model relates to a belt conveyor, a frame housing the belt conveyor, and a belt conveyor system, comprising a conveyor belt. It also relates to a frame that cooperates with the belt conveyor in such a way that the conveyor belt is automatically tensioned to a ready-to-operate state by inserting the belt conveyor into the frame. This utility model further relates to a belt conveyor system comprising a belt conveyor and a frame.

Description

Technical Field

[0001] This utility model relates to a belt conveyor for transporting goods, a frame for housing the belt conveyor, and a belt conveyor system including both components. Background Technology

[0002] In industrial practice, products typically move along a conveyor path to allow for processes such as processing or inspection during transit. For this purpose, belt conveyors are used, in which a motor-driven conveyor belt travels around the conveyor body, causing products placed on the belt to be transported in the conveying direction.

[0003] Typically, a steering roller is located at both the front and rear ends of the conveyor body, one of which also serves as the drive roller for the conveyor belt. To effectively transmit driving force to the conveyor belt, the shaft needs a sufficient diameter; however, at the junction with adjacent components upstream or downstream of the belt conveyor, increasing the roller diameter will lead to a larger junction gap. This is particularly problematic for weighing belts, where the required smooth transfer of products at the junction gap cannot be guaranteed. Therefore, it is generally preferable to use a small-diameter steering element at the front or rear end of the conveyor body.

[0004] In addition, belt conveyors require regular maintenance, which necessitates their removal from the conveyor path (maintenance status). Subsequent reinstallation into the conveyor path (operational status) may require readjusting the belt tension, which is both time-consuming and expensive. Utility Model Content

[0005] The objective of this invention is to provide a belt conveyor system that overcomes the aforementioned drawbacks. This objective is achieved through a belt conveyor and a belt conveyor system.

[0006] The basic idea of ​​this invention is that the conveyor belt is driven not by steering elements at the front or rear of the conveyor body, but by a drive roller installed below the conveyor body, around which the conveyor belt travels, and driven by a motor. Furthermore, the belt conveyor is designed to be detachably mounted in a frame for removal, for example, for maintenance purposes, or installation for regular operation. The frame can be a belt conveyor housing mechanism fixed in the conveying path. Alternatively, the frame can be connected, for example, to a load receiver of a weighing unit to measure the weight of the products conveyed by the belt conveyor.

[0007] According to this utility model, the belt conveyor includes a conveyor body that extends substantially along the conveying direction X, a transverse direction Y orthogonal to it, and a height direction Z orthogonal to both directions. In the conveying direction, the conveyor body extends from a first end to a second end opposite to the first end, and each end is provided with a steering element extending transversely Y.

[0008] The belt conveyor also includes a conveyor belt designed as a looping belt that travels around the conveyor body. The conveyor belt can be formed from a flat belt, a drive belt, or similar closed-loop conveying elements, wherein, in this application, multiple such elements are considered as a single conveyor belt when they are driven by a single drive roller.

[0009] The drive unit is also part of the belt conveyor, comprising a motor and a drive roller driven by the motor. The drive roller preferably extends along the transverse Y-axis for driving the conveyor belt. The drive unit, including the motor and drive roller, is connected to the conveyor body, for example, by screws. Preferably, the motor is positioned below the conveyor body and does not protrude substantially from the side in the transverse Y-axis. Thus, multiple belt conveyors of the same type can be placed side-by-side in the transverse Y-axis, maintaining a small lateral spacing between the conveyor belts. A multi-channel system can therefore be installed in a relatively small space.

[0010] Preferably, the toothed belt extends from the motor shaft to a corresponding gear on the drive roller to transmit torque from the motor to the drive roller. Any other power transmission device from motor to shaft known to those skilled in the art is equally applicable. If the drive unit is rigidly connected to the conveyor body (e.g., by screws, snap-fit ​​devices, quick-clamping, or tool-less operation), both components can be removed from the frame together without changing their relative positions. This allows the toothed belt connecting the motor and drive roller to be advantageously kept taut. Therefore, even when subsequently reinstalled in the frame, it is not necessary to readjust or re-tension the toothed belt; the previously set toothed belt tension (which can also be maintained using other drive belts or power transmission devices with similar effects) is maintained. This is particularly important for smooth belt operation, such as in weighing belt operations.

[0011] Preferably, the motor is cantilevered to the conveyor body, for example, by bolting a flange plate to the conveyor body only on one side of the motor shaft. The conveyor belt, which passes between the conveyor body and the motor from below, can be easily pulled out through this gap to the free end of the cantilever housing in a slack state (e.g., for maintenance purposes) without removing the motor from the drive unit or the conveyor body.

[0012] In order to transmit power from the drive roller to the conveyor belt, a sufficiently large wrap angle (i.e., the angle at which the conveyor belt fits along the arc of the drive roller) is required to avoid sliding friction or slippage between the conveyor belt and the shaft. Preferably, the wrap angle is at least 90°. More preferably, the wrap angle is 180° or greater.

[0013] In the belt conveyor of this invention, the conveyor belt is arranged around the conveyor body, such that the two steering elements at both ends of the conveyor body and the drive rollers are all bypassed or circumvented by the conveyor belt. The inner side of the conveyor belt faces these elements. The side of the conveyor belt away from the conveyor body, that is, the outer side of the conveyor belt opposite to the inner side, forms a conveying surface along the upper surface of the conveyor body for carrying the products to be conveyed. Preferably, the conveying surface is flat.

[0014] According to this invention, the belt conveyor is designed to be modularly inserted into (operating state) or removed from the frame (maintenance state). According to this invention, the belt conveyor can enter the operating state simply by inserting it into the frame, without requiring significant additional mechanical adjustments to the belt conveyor or the frame. Conversely, the belt conveyor should be easily and quickly removed completely from the frame. To secure the belt conveyor to the frame, connecting devices are preferably provided to allow for easy loosening or securing. These devices may include screws, snap-fit ​​devices, quick clamps, or combinations thereof, and preferably support tool-free operation.

[0015] Belt tension is of particular importance here. For the conveyor belt to be driven correctly and for the products on it to be transported accurately, the belt must have minimal tension in its longitudinal direction. This is also especially important for force transmission between the conveyor belt and the drive rollers. A large wrap angle alone is insufficient to ensure effective transmission unless the conveyor belt is pressed against the drive rollers with sufficient clamping force generated by the belt tension. Conversely, when the belt conveyor is removed from the frame, for example for maintenance or belt replacement, the belt tension needs to be reduced sufficiently so that the conveyor belt can be easily unloaded from the conveyor body or drive rollers in the transverse Y direction after removal from the frame.

[0016] The belt conveyor design of this utility model can automatically adjust the belt tension to enter the operating state by inserting it into the frame, and automatically reduce the belt tension by removing it from the frame. In this process, the following features of the belt conveyor function in accordance with this utility model: The drive rollers on the belt conveyor are arranged to form a free space above and / or in front of and / or behind the drive rollers along the conveying direction. Within this free space, at least one guide roller fixed to the frame is positioned such that, in the inserted state, the guide roller can conform to the outer side of the conveyor belt. The outer side of the conveyor belt is the side that carries the products to be conveyed. Typically, the outer side of the conveyor belt faces away from the conveyor body, while the inner side of the conveyor belt, opposite to the outer side, faces the conveyor body, for example, contacting or passing around the guide elements and drive rollers at the front and rear ends of the conveyor body.

[0017] When the belt conveyor of this invention is inserted into the frame, the conveyor belt contacts at least one guide roller fixed to the frame, thereby tensioning the conveyor belt and simultaneously guiding it to deflect at a preset angle. The insertion of the belt conveyor is a downward movement along the height direction, i.e., guided by the drive roller located below the belt conveyor, it is inserted into the frame from above, as shown in the attached figure. At this time, the inner side of the conveyor belt wraps around the drive roller without significant tension, with the inner side of the conveyor belt facing the drive roller. During insertion, the drive roller moves downward, passing its at least one guide roller. The conveyor belt that wraps around the conveyor body (which also extends from the drive roller to the front and rear steering elements of the conveyor body) presses its outer side against the guide roller of the frame. The guide roller, fixed relative to the belt conveyor, therefore does not move during insertion, thus affecting the running path of the conveyor belt around the conveyor body and generating belt tension in the conveyor belt as it moves further downward, the magnitude of which depends on the depth of the belt conveyor insertion into the frame.

[0018] The belt conveyor is preferably inserted or pushed into the frame to a preset limiter. The position of the limiter should be selected to ensure that the belt tension is sufficient for the normal operation of the belt conveyor when the limiter is reached. According to this invention, belt tension is generated or adjusted by inserting the belt conveyor into the frame. When the belt conveyor is lifted from the frame in the opposite direction or enters a maintenance state, the clamping force between the outer side of the conveyor belt and the guide roller decreases until the conveyor belt is completely disengaged from the guide roller and separates as the belt conveyor is lifted from the frame. In this state (maintenance state), the belt tension is preferably small enough to allow the conveyor belt to be easily removed laterally from the conveyor body or drive roller.

[0019] Maintenance of the belt conveyor is significantly simplified due to the modular design of both the belt conveyor and the frame. In the maintenance configuration, the conveyor belt can be easily removed from the conveyor body, particularly along the transverse Y-axis, as it is no longer under tension. This belt replacement can be achieved without moving the drive rollers relative to the conveyor. The same applies to the steering elements mounted on the conveyor body, which in the prior art are often used to adjust belt tension or reduce tension for replacement. This is unnecessary in the belt conveyor design of this invention, as the belt tension is reduced upon removal from the frame. Because the drive unit is connected to the conveyor body (preferably rigidly connected), it can be removed from the frame along with the conveyor body, making drive unit maintenance particularly easy. In the maintenance configuration of the belt conveyor, the motor, drive rollers, or the toothed belt arranged between the motor and drive rollers are also easily accessible.

[0020] The preferred rigid connection between the drive unit and the conveyor body also defines the arrangement of the drive roller corresponding to the drive unit relative to the conveyor body and its front and rear steering elements. This arrangement preferably remains unchanged when the belt conveyor is removed from the frame, thus maintaining the predetermined position of the drive roller relative to the conveyor body steering elements even in the removed state. This contributes to smooth and safe conveyor belt operation, which is necessary, for example, when the belt conveyor is used as a weighing belt. Preferably, the position of the drive roller relative to the conveyor body is adjustable so as to influence the resulting conveyor belt tension and conveyor belt operation.

[0021] Preferably, the position of at least one steering roller relative to the frame can be selectively changed in order to precisely preset the belt tension generated when the belt conveyor is inserted.

[0022] According to an advantageous embodiment of the present invention, at least one steering element of the conveyor body is designed with a blade-shaped edge. This refers to a steering element with a small diameter, which allows for the smallest possible transition gap with another conveyor body adjacent in the conveying direction.

[0023] Such a blade-like edge includes, for example, at least one rotatably supported roller element against which the conveyor belt deflects. As a supplement or alternative, a blade-like edge can be designed with at least two such independently rotatably supported roller elements of the same diameter. These roller elements are arranged sequentially in the transverse Y direction. A conveyor body support is provided between at least two such roller elements. The support stabilizes the roller elements while preventing them from bending across the entire conveyor width (preferably due to their small diameter to form a small junction gap, thus lacking high bending rigidity).

[0024] As an alternative to one or more rollers that can be rotated, the blade-like edge can also be at least one preferred rod-shaped material segment fixedly mounted on the conveyor body, which also extends laterally, with the conveyor belt turning against its outer surface.

[0025] A frame for housing the belt conveyor of this invention includes connectors for detachably securing the belt conveyor to the frame. For example, the connectors may be screws or clips, preferably operable without tools.

[0026] To generate belt tension according to this invention, the frame includes at least one guide roller mounted thereon, the axis of rotation of which extends laterally along the Y-axis. This at least one guide roller is designed to press against the outside of the conveyor belt when the belt conveyor is inserted into the frame, causing the conveyor belt to generate a predetermined belt tension for operation. During belt conveyor insertion, after the conveyor belt contacts the guide roller, the resulting belt tension preferably increases with the depth of insertion of the belt conveyor into the frame.

[0027] According to this invention, the positioning of at least one guide roller on the frame ensures that the conveyor belt has exactly its required tension when the belt conveyor is fully inserted into the frame to a predetermined end position. The end position can be determined, for example, by a mechanical stop acting between the belt conveyor and the frame, which prevents the belt conveyor from inserting further into the frame. Preferably, the stop is adjustable.

[0028] According to another advantageous embodiment of the present invention, at least one second steering roller is provided on the frame, which, in the inserted state, also guides the conveyor belt and presses it to its outer side. For example, the two steering rollers may be located before and after the drive roller with respect to the conveying direction, but not necessarily at the same vertical height. In the inserted state, the conveyor belt extends, for example, from the front blade-shaped edge of the conveyor body to the first steering roller. The conveyor belt passes around this steering roller at a first turning angle with its outer side, and then extends to the drive roller, passing around the drive roller at a wrap angle with its inner side. The conveyor belt then extends to the second steering roller, passes around the second steering roller at a second turning angle with its outer side, and then returns to the front blade-shaped edge of the conveyor body via the rear blade-shaped edge and along the surface of the conveyor body. The two steering rollers each form a bend in the running path of the conveyor belt, as shown in the figure.

[0029] By using two guide rollers, the wrap angle of the conveyor belt around the conveyor shaft can be advantageously maximized, thereby achieving the most efficient force transmission between the drive roller and the conveyor belt. This effect is particularly pronounced when the drive roller, in its inserted state, is lower than the two guide rollers in the height direction Z. A simple implementation is that the two guide rollers are at the same height. The large wrap angle of the conveyor belt around the drive roller can also be achieved by the following: the distance between the two guide rollers in the conveying direction X is only slightly larger than the diameter of the drive roller (and the conveyor belt against it). The drive roller, which is lowered between the two guide rollers, is thus wrapped by the conveyor belt nearly 180° because the conveyor belt is pressed and guided on its outside by the two guide rollers, causing it to extend approximately parallel between the guide rollers and the drive roller. Preferably, the drive roller W forms the lowest point in the conveyor belt's running path with respect to the height direction Z.

[0030] According to another preferred embodiment of the present invention, at least one steering roller is installed on the upper end of the frame or its groove, such that a straight belt segment extending between one end of the conveyor body and the steering roller, preferably a straight belt segment immediately adjacent to the steering roller, forms a first angle α with the conveying surface, satisfying the following condition: α < 25°, preferably α < 5°, and most preferably α = 0°.

[0031] In the optimal configuration, the conveyor belt runs substantially parallel to the conveying surface, adjacent to the bottom of the conveyor body, thus not occupying deeper space within the frame. Consequently, the conveyor belt can advantageously run above the drive unit motor, and can be easily removed laterally from this gap, provided the motor is fixed to the conveyor body on only one side.

[0032] Similarly, a straight belt section extending between the steering roller and the drive roller can also be specified, preferably a straight belt section adjacent to the steering roller, forming a second angle β with the conveying surface, satisfying the following conditions: β < 115°, preferably β < 95°, and most preferably β = 90°.

[0033] Therefore, the conveyor belt extends substantially vertically downwards from at least one guide roller toward the drive roller, and if a second guide roller is arranged according to the same principle, it is then guided vertically upwards toward the second guide roller. This belt guidance method does not occupy the structural space in front of or behind the guide rollers along the conveying direction X. Furthermore, by guiding the belt substantially parallel to the drive rollers, a favorable large wrap angle can be achieved on the drive roller.

[0034] In theory, the wrap angle can also be greater than 180°. By moving the belt conveyor along or against the conveying direction, so that the drive roller is at least partially moved below either of the steering rollers, the wrap angle is further increased, while the value of the aforementioned second angle β is correspondingly reduced to less than 90°.

[0035] According to another preferred embodiment of the present invention, the frame is provided with a groove that opens upward along the height direction Z. Preferably, the groove is defined by at least one, preferably two, of the aforementioned guide rollers along the conveying direction X or the opposite conveying direction. The groove is designed to switch the belt conveyor, initially separated from the frame, to the operating state by inserting the belt conveyor, led by the drive roller and the surrounding conveyor belt, into the groove until it reaches the limiting element acting between the frame and the belt conveyor. Thus, the outer side of the conveyor belt contacts at least one guide roller, and as the drive roller is further inserted into the groove, the guide roller gradually tightens the conveyor belt.

[0036] In operation, the frame housing the belt conveyor can be mounted, for example, on a conveyor line support. Alternatively, the frame can be designed to be mounted on the load receiver of a weighing device, allowing the frame, along with the belt conveyor mounted therein, to provide preload to the weighing device and to determine the weight of the products conveyed by the belt conveyor.

[0037] Furthermore, according to one embodiment of this invention, the frame can be designed as a housing or protective cover, particularly enclosing the conveyor belt guided within the frame in the inserted state, to prevent accidental contact with the human body. Additionally, an opening can be provided at the bottom of the frame to facilitate easier removal of dirt particles or liquids from the frame. Attached Figure Description

[0038] An embodiment of the present invention will now be described in detail with reference to the accompanying drawings, wherein: Figure 1 This is a simplified perspective view of the belt conveyor of this utility model; Figure 2 This is a simplified perspective view of the corresponding rack; Figure 3 This is a simplified perspective view of a belt conveyor inserted into a frame; Figure 4 This is a perspective view of the belt conveyor from a slightly downward angle. Detailed Implementation

[0039] Figure 1 A simplified perspective side view of the belt conveyor K, separated from the frame C, is shown. In this separated state, the belt conveyor K is in a maintenance state, allowing for the maintenance or replacement of its various components. The belt conveyor K includes a conveyor body T, which extends in a preferably horizontal conveying direction X, a preferably equally horizontal transverse direction Y orthogonal to it, and a height direction Z orthogonal to both directions. The conveyor body T is designed to be relatively flat in the height direction Z, serving as support for the conveyor belt G that winds around the conveyor body. In the example shown, the conveyor belt is designed as a transmission belt that extends substantially along the transverse direction Y across the entire width of the conveyor body T. The conveyor belt G has its outer side facing away from the conveyor body T. a A flat conveying surface E is formed on the upper surface of the conveyor body T (see...). Figure 3 ), while the inner G i Oriented toward the conveyor body.

[0040] The conveyor body T has a steering element U1 and U2 at its front and rear ends in the conveying direction X for the conveyor belt G, both designed with small-diameter, knife-edge-shaped edges. From the steering element, the conveyor belt extends to the underside of the conveyor body and wraps around the drive roller W (in... Figure 3 (more clearly visible in the image), the drive roller along its axis Y W Extending in the transverse Y direction, the drive roller W is driven by a motor M, forming the drive unit A of the conveyor belt. Drive unit A is fixed to the conveyor body T via a flange plate L, forming the modular belt conveyor K. The drive roller W is supported by two bearings, one located on the flange plate L and the other on an auxiliary plate opposite the flange plate L along the transverse Y direction. .

[0041] Along the conveying direction X, a free space F is formed below the conveyor body T, both before and after the drive roller W. As described below, this free space F allows the two steering rollers to apply force to the conveyor belt, thereby tightening the conveyor belt.

[0042] Figure 2A simplified perspective view of a frame C suitable for a belt conveyor K is shown. According to this invention, the belt conveyor K can be connected to the frame C by lowering it into the frame C in the opposite vertical direction Z, with the drive roller W around the conveyor belt G as the guide, thereby entering the running-ready state (i.e., the running state).

[0043] The frame C has an approximately cuboid structure, comprising four sidewalls extending laterally along the height direction Z. The bottom of the frame C is enclosed by a base plate (not shown), wherein openings Q in the base plate allow liquid or dirt to drain (see [reference]). Figure 3 ).

[0044] On the upper side opposite the base plate, the frame C is open and has a groove P through which the drive roller W, along with the conveyor belt G, can sink and insert into the inner cavity of the frame C in the opposite direction of height Z. Along the conveying direction X, the upper end of the groove P is defined by two guide rollers R1 and R2, with their corresponding axes Y... R1 Y R2 Extending laterally along the Y direction, its width is approximately equal to the width of the conveyor belt G. The spacing between the guide rollers R1 and R2 in the conveying direction X is slightly larger than the diameter of the drive roller W, allowing the drive roller W to slide down through the gap between the two guide rollers and insert into the frame until the belt conveyor touches the limit piece (not shown in detail) on the frame C, thus reaching its final position or entering the operating state.

[0045] This situation is in Figure 3 As shown in the diagram, the belt conveyor K, inserted from above into the frame C, along with its drive roller W and the conveyor belt G that wraps around the drive roller, extends into the groove P (for clarity, one side wall of the frame C is omitted in this view). The two guide rollers R1 and R2 belonging to the frame C are located at... Figure 1 The drive roller W is shown in the free space F before and after it. Here, they act on the outer side G of the conveyor belt G that is guided from the drive roller W to the front and rear steering elements U1 and U2, respectively. a This causes the roller to rotate a certain distance around its corresponding steering roller. In the example shown, the steering angle of each steering roller is approximately 90°.

[0046] Starting from the two guide rollers, the conveyor belt G extends downward toward the drive roller, wrapping around it at an angle of approximately 180°. Simultaneously, the arrangement of the guide rollers R1 and R2 within the frame C is chosen such that the conveyor belt G is in a ready-to-run tensioned state when the belt conveyor K reaches its final position within the frame C. Depending on the position of the guide rollers relative to the drive roller, the running path of the conveyor belt G between the drive roller W and the guide elements U1 and U2 on the conveyor body T can be lengthened or shortened, thereby adjusting the belt tension.

[0047] Fine-tuning of belt tension and belt running path can also be achieved by movably fixing the guide roller R1 in a long hole extending along the conveying direction X, such as... Figure 2 As shown.

[0048] Figure 4 Another perspective view of the belt conveyor K is shown from a slightly downward angle. Here, it is assumed that, although... Figure 3 The two steering rollers R1 and R2 shown are not visible here, but the conveyor belt G still retains the shape constrained by these rollers in its operating state. Figure 4 Similar to Figure 3 Corresponding to the shown running path, the drive roller W is simultaneously covered. It can be seen that the first belt segment G... α The path from the steering element U1 to the steering roller (not shown) extends substantially parallel to the conveying surface of the upper surface of the conveyor body T, or forms a first angle α with the conveying surface. Preferably, the first angle α is as small as possible so that the conveyor belt can be guided close to the bottom of the conveyor body T, thereby leaving the aforementioned free space F. For the same reason, the second belt segment G... β The guide roller (not shown) extends from the drive roller W at a second angle β relative to the conveyor surface, wherein this angle is as close as possible to 90°. Thus, free space F remains available for the guide roller, while simultaneously creating a particularly advantageous or sufficiently large wrap angle for the conveyor belt to circumnavigate the drive roller W.

[0049] List of reference numerals A drive unit C rack D U The diameter of the roller element at the blade-shaped edge D W Diameter of drive roller W E conveyor surface F Free Space G Conveyor Belt G a outer band G i inner side G α First section G β Second section K-belt conveyor L flange plate Auxiliary board M motor P groove Openings in Q rack R1 and R2 steering rollers T conveyor body U1 and U2 steering elements W drive roller X conveying direction Y horizontal Z-axis α First angle β second angle

Claims

1. A belt conveyor (K) extending along a conveying direction (X), a transverse direction (Y) orthogonal to it, and a vertical direction (Z) orthogonal to both directions (X, Y), wherein, The belt conveyor (K) includes: a) A conveyor body (T) extending substantially along the conveying direction (X) and the transverse direction (Y), wherein the conveyor body (T) has a first end and a second end opposite to the first end in the conveying direction (X), and wherein the conveyor body (T) has a steering element (U1, U2) extending along the transverse direction (Y) at both the first end and the second end. b) A conveyor belt (G), which is designed as a loop belt and travels around the conveyor body (T), and c) A drive unit (A) connected to the conveyor body (T), the drive unit comprising a drive roller (W) and a motor (M) for driving the drive roller (W), wherein the drive roller drives the conveyor belt (G) and extends along the transverse direction (Y), and the drive roller is supported by two bearings. d) wherein the conveyor belt (G) is guided around the conveyor body (T) in such a manner that the two steering elements (U1, U2) and the drive roller (W) are together wound around the conveyor belt (G), wherein the outer side of the belt (G) facing away from the conveyor body (T) a A flat conveying surface (E) is formed along the upper side of the conveyor body (T) to carry the products. Its features are, e) The conveyor body (T), together with the drive unit (A) fixed thereon, forms a modular unit that can be inserted into a frame (C) serving as a support and / or contact protection device for operation, i.e., in operation mode, or removed from it, i.e., in maintenance mode. f) In the operating state, the drive roller (W) is located below the conveyor body (T), such that... Above the drive roller (W) along the Z direction and / or Along the conveying direction (X) in front of and / or behind the drive roller (W) A free space (F) is formed for arranging at least one guide roller (R1, R2) fixed to the frame, such that the guide roller (R1, R2) can be positioned with respect to the outer side (G) of the conveyor belt (G). a ) contact, wherein the rotation axis (Y) of the steering rollers (R1, R2) is in contact. R1 , Y R2 It extends along the said transverse (Y).

2. The belt conveyor (K) according to claim 1, characterized in that, At least one of the two steering elements (U1, U2) is designed with a blade-like edge.

3. The belt conveyor (K) according to claim 1, characterized in that, The conveyor belt (G) is relaxed by switching to the maintenance state, and the conveyor belt (G) is tightened by switching to the operating state.

4. The belt conveyor (K) according to any one of claims 1 to 3, characterized in that, In the maintenance state, the conveyor belt (G) can be removed from the conveyor body (T) along the transverse direction (Y). a) No further reduction in the belt tension of the conveyor belt (G) is required, and / or b) Without needing to release or move the drive roller (W) or steering element (U1, U2) relative to the conveyor body (T), and / or c) There is no need to change the belt length to loosen the belt.

5. The belt conveyor (K) according to any one of claims 1 to 3, characterized in that, At least one of the steering elements (U1, U2) is designed with a blade-like edge, wherein the blade-like edge includes: i) At least one rotatably mounted roller element, against which the conveyor belt (G) rests for steering. and / or ii) At least two roller elements of the same diameter, mounted independently and rotatably, arranged sequentially along the transverse (Y) direction, wherein a support is provided between at least two roller elements on the conveyor body (T). and / or iii) At least one material segment fixed to the conveyor body (T) and extending along the transverse (Y), the conveyor belt (G) turning against its outer surface.

6. The belt conveyor (K) according to claim 5, characterized in that, The two steering elements (U1, U2) are designed with blade-like edges.

7. The belt conveyor (K) according to claim 5, characterized in that, The material segment is rod-shaped.

8. A frame (C) for housing a belt conveyor (K) according to any one of claims 1 to 7, the belt conveyor being insertable into the frame (C), the frame including at least one guide roller (R1, R2) mounted on the frame (C), the axis of rotation of which is (Y) R1 , Y R2 ) extends along the transverse (Y) direction, where, The at least one steering roller (R1, R2) is designed to press against the outer side (G) of the conveyor belt (G) when the belt conveyor (K) is inserted into the frame (C). a On the conveyor belt (G), a belt tension that can be preset for operation is generated.

9. A frame (C) for accommodating a belt conveyor (K) according to any one of claims 1 to 7, the belt conveyor being insertable into the frame (C), wherein, A connecting device is provided for detachably fixing the belt conveyor (K) to the frame (C).

10. The frame (C) according to claim 8 or 9, characterized in that, The position of at least one guide roller (R1, R2) relative to the frame (C) can be selectively changed in order to precisely set the belt tension and / or belt running path generated when inserted into the belt conveyor (K).

11. The frame (C) according to claim 8 or 9, characterized in that, The rack (C) a) Designed for installation on the load receiver of the weighing unit, or b) Designed for mounting on a support structure on a conveyor line.

12. The frame (C) according to claim 8 or 10, characterized in that, The frame (C) has an upwardly opening groove (P) in the height direction (Z) along its lateral (Y) extension, the groove being defined by the at least one guide roller (R1, R2) along and / or against the conveying direction, wherein the groove (P) is used to switch the belt conveyor (K), which is initially separated from the frame (C) according to any one of claims 1 to 7, to the operating state by inserting the belt conveyor into the groove (P) with the drive roller (W) and the surrounding conveyor belt (G) as guides until a limiting member acting between the frame (C) and the belt conveyor (K) is reached, thereby applying force and tauting the conveyor belt (G) by means of the at least one guide roller (R1, R2).

13. The frame (C) according to claim 12, characterized in that, When the conveyor belt (G) is taut by means of at least one steering roller (R1, R2), the conveyor belt (G) is taut to the operating ready state.

14. A belt conveyor system comprising a belt conveyor (K) according to any one of claims 1 to 7 and a frame (C) according to any one of claims 8 to 13, wherein, Regarding the belt conveyor (K) in the inserted state, a) The rotation axis (Y) of at least one steering roller (R1, R2) R1 , Y R2 ) in the height direction (Z) and the rotation axis (Y) of the drive roller (W) W At the same or higher level and / or b) The frame (C) is provided with two guide rollers (R1, R2), and the clearance between the two guide rollers in the conveying direction (X) is sufficient to allow the drive roller (W) and the surrounding conveyor belt (G) to pass through.

15. The belt conveyor system according to claim 14, characterized in that, The two steering rollers (R1, R2) are at the same height position (Z). R ).

16. The belt conveyor system according to claim 14 or 15, characterized in that, The at least one steering roller (R1, R2) is disposed at the upper end of the frame (C) or its groove (P) in the following manner, namely, a) A straight belt section (G) extending between one end of the conveyor body (T) and the rollers (R1, R2). α ), extending at a first angle (α) with the conveying surface (E), and meeting the following conditions: α < 25°， and / or b) A straight belt segment (G) extending between the rollers (R1, R2) and the drive roller (W) β ), extending at a second angle (β) with the conveying surface (E), and meeting the following conditions: β < 115°。 17. The belt conveyor system according to claim 16, characterized in that, A straight belt section (G) extending between one end of the conveyor body (T) and the rollers (R1, R2). α ) is the straight belt segment immediately adjacent to the rollers (R1, R2).

18. The belt conveyor system according to claim 16, characterized in that, α < 5°。 19. The belt conveyor system according to claim 16, characterized in that, α = 0°。 20. The belt conveyor system according to claim 16, characterized in that, The straight belt segment (G) extending between the rollers (R1, R2) and the drive roller (W) β ) is the straight belt segment immediately adjacent to the rollers (R1, R2).

21. The belt conveyor system according to claim 16, characterized in that, β < 95°。 22. The belt conveyor system according to claim 16, characterized in that, β = 90°。 23. The belt conveyor system according to claim 14 or 15, characterized in that, The rack (C) a) Forming an anti-contact device along at least one section of the conveyor belt (G) protecting the steering elements (U1, U2) from contact with the steering roller or the drive roller (W). and / or b) An opening (Q) is provided at the bottom to allow dust particles or liquids to be discharged from the frame (C).

24. The belt conveyor system according to claim 23, characterized in that, The anti-contact device protects the conveyor belt (G) between the steering elements (U1, U2) throughout the entire process.

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