Conveyor

Abstract

The utility model provides a conveyor which comprises a rack, a rack, a first shaft sleeve assembly, a second shaft sleeve assembly, a conveying belt, a driving shaft and a driven shaft arranged at one end of the rack in the extending direction, a first notch groove is formed in the end, away from the driven shaft, of the rack, and a second notch groove opposite to the first notch groove is formed in the rack. The first shaft sleeve assembly and the second shaft sleeve assembly are arranged on the outer side of the driving shaft in a sleeving mode so that the driving shaft can rotate relative to the first shaft sleeve assembly and the second shaft sleeve assembly, the first shaft sleeve assembly is arranged relative to the first notch groove and fixedly connected with the rack, and the second shaft sleeve assembly is arranged in the second notch groove and fixedly connected with the rack. The conveying belt sleeves the outer sides of the driving shaft and the driven shaft, and the driving shaft is used for driving the driven shaft to rotate through the conveying belt, so that the driving shaft is arranged in the first shaft sleeve assembly and the second shaft sleeve assembly, the driving shaft is not influenced by loosening of the conveying belt, and the stability of connection with the rack can still be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of material transportation, and particularly to a conveyor. Background Art

[0002] A belt conveyor is a machine that uses friction drive to continuously transport materials. It mainly consists of a frame, a conveyor belt, a gantry, a driving shaft, a transmission shaft, a driving assembly, etc. It can form a material transportation process for materials on a certain conveyor line from the initial feeding point to the final discharging point. It can transport both bulk materials and finished items. In addition to pure material transportation, it can also cooperate with the requirements of the technological processes in the production processes of various industrial enterprises to form a rhythmic flow production line.

[0003] The conveyor belt, the driving shaft and the transmission shaft are important components of the conveyor. The driving shaft and the transmission shaft are arranged at both ends of the gantry, and the conveyor belt is sleeved outside the driving shaft and the driven shaft. In the prior art, the gantry often has a U-shaped socket, and the driving shaft is arranged on the gantry through the U-shaped socket. The fastening of the driving shaft is only completed by the tightening of the conveyor belt. However, the conveyor belt is very easy to become loose after long-term work, which leads to looseness between the gantry and the driving shaft and affects the normal operation of the conveyor.

[0004] Therefore, the utility model is committed to providing a conveyor to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a conveyor. By sleeving a first bushing assembly and a second bushing assembly outside the driving shaft, and connecting and fixing the first bushing assembly with a first notch groove and the second bushing assembly with a second notch groove, the driving shaft can be stably and reliably arranged, and the connection between the driving shaft and the gantry will not be affected by the loosening of the conveyor belt, ensuring the stability and reliability of the conveyor during operation.

[0006] The technical solution provided by the utility model is as follows:

[0007] A conveyor, comprising a frame, a gantry, a first bushing assembly, a second bushing assembly, a conveyor belt, a driving shaft and a driven shaft arranged at one end of the gantry in the extending direction. A first notch groove is arranged at one end of the gantry far away from the driven shaft, and a second notch groove opposite to the first notch groove is arranged on the frame.

[0008] The first bushing assembly and the second bushing assembly are sleeved outside the driving shaft, so that the driving shaft rotates relative to the first bushing assembly and the second bushing assembly. The first bushing assembly is arranged relative to the first notch groove and is fixedly connected to the bench. The second bushing assembly is arranged in the second notch groove and is fixedly connected to the frame. The conveyor belt is sleeved outside the driving shaft and the driven shaft, and the driving shaft is used to drive the driven shaft to rotate through the conveyor belt.

[0009] In some embodiments, both the first bushing assembly and the second bushing assembly are provided with two, and the two first bushing assemblies are located between the two second bushing assemblies.

[0010] In some embodiments, the first bushing assembly includes a first sleeve sleeved outside the driving shaft. The first sleeve is fixedly connected to the bench, and the driving shaft is adapted to rotate relative to the first sleeve.

[0011] In some embodiments, the second bushing assembly includes a second sleeve, a bearing, and a third sleeve that is snap-fitted with the second notch groove. The bearing is arranged in the third sleeve and is sleeved outside the driving shaft.

[0012] One end of the second sleeve extends into the first sleeve, and the other end of the second sleeve is fixedly connected to the third sleeve.

[0013] In some embodiments, the first bushing assembly further includes a wear-resistant sleeve sleeved outside the second sleeve, and the wear-resistant sleeve is located inside the first sleeve.

[0014] In some embodiments, it further includes a fixed seat. The fixed seat is arranged on the frame and is fixedly connected to the third sleeve.

[0015] In some embodiments, it further includes a protective cover, a motor, a synchronous pulley, a belt, and a driving pulley arranged at the output end of the motor. The synchronous pulley is located outside the frame and is arranged on the driving shaft. The belt is sleeved outside the driving pulley and the synchronous pulley, and is used to drive the synchronous pulley to rotate through the motor, and then drive the driving shaft to rotate.

[0016] The protective cover is connected to the frame and is located outside the synchronous pulley and the driving pulley.

[0017] In some embodiments, it further includes a telescopic assembly. The frame includes a connecting member and two support members arranged in parallel. The connecting member is arranged between the two support members. The bench is arranged between the two support members. The second notch groove is arranged on each support member.

[0018] One end of the telescopic assembly is hinged to the connecting piece, and the other end of the telescopic assembly is hinged to one end of the gantry away from the driving shaft. The telescopic assembly extends or contracts to drive the gantry to rotate, so that the goods on the gantry are separated from the conveyor belt.

[0019] In some embodiments, one side wall of each support member communicates with the second notch groove. There are two first notch grooves, and the two first notch grooves are respectively arranged at both ends perpendicular to the extending direction of the gantry, and one end of the gantry away from the driven shaft communicates with the first notch groove.

[0020] In some embodiments, support positioning seats are further arranged at the four corners of the frame to adjust the height of the frame relative to the ground.

[0021] In some embodiments, a rejection box is further included, and the rejection box is used to receive the goods separated from the conveyor belt.

[0022] The conveyor provided by the present utility model has the following beneficial effects:

[0023] 1. For the conveyor provided by the present utility model, the first bushing assembly and the second bushing assembly are sleeved outside the driving shaft, and the first bushing assembly is fixedly connected to the gantry through the first notch groove, and the second bushing assembly is fixedly connected to the frame through the second notch groove. The driving shaft rotates relative to the first bushing assembly and the second bushing assembly, and further enables the driving shaft to drive the driven shaft to rotate through the conveyor belt. In this way, the fastening of the driving shaft is realized through the first bushing assembly and the second bushing assembly, and the connection stability between the driving shaft and the gantry is high. The driving shaft and the gantry will not become loose due to the loosening of the conveyor belt, ensuring the stability and reliability of the conveyor operation.

[0024] 2. For the conveyor provided by the present utility model, a protective cover is further arranged outside the frame to protect the motor, the synchronous pulley, the belt and the driving pulley, reduce the adverse effects of the external environment on the motor, the synchronous pulley, the belt and the driving pulley, and extend the service life.

[0025] 3. For the conveyor provided by the present utility model, one end of the telescopic assembly is hinged to the connecting piece, and the other end of the telescopic assembly is hinged to one end of the gantry away from the driving shaft. When the telescopic assembly extends, it can drive one end of the gantry away from the driving shaft to rotate upward, and when the telescopic assembly contracts, it can drive one end of the gantry away from the driving shaft to rotate downward, thereby enabling the gantry to rotate, facilitating the rejection box to receive the goods separated from the conveyor belt.

[0026] 4. A conveyor provided by the present utility model further has support positioning seats at the four corners of the frame. Workers can adjust the distance between the frame and the ground by adjusting the length of the support positioning seats, further improving the stability of the device, enabling this conveyor to adapt to various terrains and ensuring the stability of the conveyor during operation. Description of the Drawings

[0027] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present solution in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0028] Figure 1 is a schematic structural diagram of an embodiment of a conveyor provided by the present utility model;

[0029] Figure 2 is a cross-sectional view of a conveyor provided by the present utility model;

[0030] Figure 3 is provided by the present utility model Figure 2 partial enlarged schematic view of A of

[0031] Figure 4 is a schematic structural diagram of another embodiment of a conveyor provided by the present utility model.

[0032] Explanation of the Reference Numerals in the Drawings:

[0033] Frame 1, second notch groove 11, connecting member 12, support member 13, support positioning seat 14, telescopic assembly 15, platform 2, conveyor belt 21, driven shaft 22, driving shaft 23, first notch groove 24, first bushing assembly 3, first sleeve 31, second sleeve 32, wear-resistant sleeve 33, second bushing assembly 4, bearing 41, third sleeve 42, fixing seat 5, protective cover 61, motor 62, synchronous pulley 63, belt 64, driving pulley 65, rejection box 7. Detailed Embodiment

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings and other embodiments can be obtained.

[0035] For the sake of simplicity of the drawings, only the parts related to the present utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, for the sake of simplicity and easy understanding of the drawings, in some figures, only one of the components with the same structure or function is schematically shown, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation.

[0036] In this article, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] In one embodiment, a conveyor is described. By passing the driving shaft 23 through the first bushing assembly 3 and the second bushing assembly 4, and the first bushing assembly 3 is fixedly installed on the bench 2, and the second bushing assembly 4 is fixedly connected to the frame. Therefore, the driving shaft 23 rotates relative to the first bushing assembly 3 and the second bushing assembly 4, and is restricted by the first bushing assembly 3 and the second bushing assembly 4. Even when the conveyor belt 21 becomes loose, it will not affect the stability of the driving shaft 23 and the bench 2, ensuring the stability and reliability of the conveyor operation.

[0039] Specifically, referring to the accompanying drawings of the specification Figures 1 to 4 , a conveyor includes a frame 1, a bench 2, a first bushing assembly 3, a second bushing assembly 4, a conveyor belt 21, a driving shaft 23, and a driven shaft 22. Among them, the driven shaft 22 is rotatably arranged at one end in the extending direction of the bench 2. A first notch groove 24 is provided at one end of the bench 2 away from the driven shaft 22. Correspondingly, a second notch groove 11 is provided on the frame 1, and the second notch groove 11 is correspondingly arranged with the first notch groove 24. Both the first bushing assembly 3 and the second bushing assembly 4 are sleeved outside the driving shaft 23, so that the driving shaft 23 can rotate relative to the first bushing assembly 3 and the second bushing assembly 4.

[0040] Further, the first bushing assembly 3 is fixedly connected to the bench 2 and is arranged relative to the first notch groove 24. In addition, the second bushing assembly 4 is arranged in the second notch groove 11 and is fixedly connected to the bench 2, so that the driving shaft 23 passes through the first notch groove 24, the first bushing assembly 3, the second notch groove 11, and the second bushing assembly 4 are arranged. Correspondingly, the conveyor belt 21 is sleeved outside the driving shaft 23 and the driven shaft 22, so that when the driving shaft 23 rotates, it drives the conveyor belt 21 to rotate, and further drives the driven shaft 22 to rotate.

[0041] It can be understood that in the prior art, a U-shaped socket is often arranged at one end of the bench 2, and the driving shaft 23 is inserted into the U-shaped socket. On the one hand, the driving shaft 23 is limited by the U-shaped socket, and on the other hand, it is also affected by the tension of the conveyor belt 21, so as to fasten the driving shaft 23 to the frame 1. However, during the long-term operation of the conveyor, the interaction between the driving shaft 23 and the U-shaped socket will become weak, which will cause the driving shaft 23 and the bench 2 to become loose when the conveyor belt becomes loose, thereby affecting the stability and reliability of the conveyor operation and resulting in a decrease in work efficiency.

[0042] In this embodiment, the driving shaft 23 is inserted into the first bushing assembly 3 and the second bushing assembly 4. The first bushing assembly 3 is fixedly connected to the bench 2, and the second bushing assembly 4 is fixedly connected to the frame 1, so that the driving shaft 23 is fastened by the first bushing assembly 3 and the second bushing assembly 4. Even if the conveyor belt 21 becomes loose after long-term use, it will not cause the driving shaft 23 and the bench 2 to become loose, ensuring the stability and reliability of the conveyor operation.

[0043] In one embodiment, this embodiment further describes a conveyor. Refer to the accompanying drawings of the specification Figure 1 , two first bushing assemblies 3 and two second bushing assemblies 4 are provided. The second bushing assembly 4, the first bushing assembly 3, the first bushing assembly 3, and the second bushing assembly 4 are arranged in sequence, that is, two first bushing assemblies 3 are arranged between two second bushing assemblies 4. Correspondingly, the bench 2 is connected to the two first bushing assemblies 3, the bench 2 is arranged in the frame 1, and the frame 1 is connected to the two second bushing assemblies 4.

[0044] Specifically, the first bushing assembly 3 includes a first sleeve 31. The two first sleeves 31 of the two first bushing assemblies 3 are respectively arranged on the opposite sides of the bench 2, and the first sleeve 31 is fixedly connected to the bench 2, so that the driving shaft 23 rotates relative to the first sleeve 31.

[0045] Of course, in actual production applications, there are various connection methods between the first sleeve 31 and the bench 2. For example, they can be fixedly connected by screws or by welding, etc. These are not described one by one here, and they are all within the protection scope of the present invention.

[0046] Further, the second bushing assembly 4 includes a second sleeve 32, a bearing 41 and a third sleeve 42. A limiting groove that is engaged and cooperated with the second notch groove 11 is provided on the outer surface of the third sleeve 42 to connect and fix the third sleeve 42 to the frame 1. The bearing 41 is disposed within the third sleeve 42 and sleeved outside the driving shaft 23, so that the driving shaft 23 rotates relative to the third sleeve 42 through the bearing 41.

[0047] Correspondingly, one end of the second sleeve 32 extends into the first sleeve 31, and the other end of the second sleeve 32 is fixedly connected to the third sleeve 42. Correspondingly, both the first sleeve 31 and the second sleeve 32 are sleeved outside the driving shaft 23, and the driving shaft 23 passes through the first sleeve 31, the second sleeve 32, the third sleeve 42 and the bearing 41 to rotate.

[0048] In actual production applications, the first sleeve 31 includes a first part and a second part that are sequentially connected. The outer diameter of the second part is greater than that of the first part. The first part extends into the first notch groove 24, and the second part is fixedly connected to the bench 2.

[0049] In addition, in actual production applications, the bench 2 has two opposite ends. One end of the bench 2 is connected to the first bushing assembly 3 and the second bushing assembly 4, and the other end of the bench 2 is connected to the driven shaft 22. In addition, in another embodiment, referring to the accompanying drawings of the specification Figures 1 to 4 , one end of the bench 2 is connected to the first bushing assembly 3 and the second bushing assembly 4. Correspondingly, the conveyor further includes a telescopic assembly 15. One end of the telescopic assembly 15 is hinged to the frame 1, and the other end of the telescopic assembly 15 is hinged to the end of the bench 2 away from the driving shaft 23. Correspondingly, the telescopic assembly 15 can be extended or shortened, so that when the telescopic assembly 15 extends, it can drive the end of the bench 2 away from the driving shaft 23 to rotate upward, and when the telescopic assembly 15 shortens, it can drive the end of the bench 2 away from the driving shaft 23 to rotate downward, thereby causing the bench 2 to rotate. Therefore, when the bench 2 rotates, the goods on the bench 2 are separated from the conveyor belt 21, thereby realizing the separation of the goods.

[0050] Further, a conveyor further includes a rejection box 7. The rejection box 7 is disposed at one end close to the driving shaft 23 or the driven shaft 22. When it is close to the driven shaft 22, the telescopic assembly 15 shortens, and the end of the bench 2 near the driven shaft 22 rotates downward, so that the goods are rejected into the rejection box 7. Similarly, when the rejection box 7 is disposed close to the driving shaft 22, the end of the bench near the driving shaft 23 rotates downward, so that the goods are rejected into the rejection box 7.

[0051] It should be noted that when the telescopic assembly 15 extends or retracts, the gantry 2 rotates, thereby driving the first sleeve 31 to rotate relative to the second sleeve 32.

[0052] Preferably, a wear-resistant sleeve 33 is further provided between the first sleeve 31 and the second sleeve 32, which is used to reduce the wear of the first sleeve 31 and the second sleeve 32 when the first sleeve 31 rotates relative to the second sleeve 32 and extend the service life.

[0053] In one embodiment, referring to the accompanying drawings of the specification Figure 1 , this embodiment further describes the frame 1. Wherein, the frame includes a connecting member 12 and two support members 13 arranged in parallel, and the connecting member 12 is arranged between the two support members 13 arranged in parallel. Correspondingly, the gantry 2 is arranged between the two support members 13, and the second notch groove 11 is arranged on each support member, that is, the second notch groove 11 is arranged in two.

[0054] In addition, one end of the telescopic assembly 15 is hinged to the connecting member 12. The other end of the telescopic assembly 15 is hinged to the end of the gantry 2 far from the driving shaft 23. The telescopic assembly 15 extends or retracts to drive the gantry 2 to rotate, so that the goods on the gantry 2 are separated from the conveyor belt 21.

[0055] The telescopic assembly 15 can use a driving oil cylinder, or a cylinder, a linear motor, etc. as a power source, which is not a limitation to the present utility model here.

[0056] The first notch grooves 24 are arranged in two. The two first notch grooves 24 are respectively arranged on the gantry 2 and are located at both ends perpendicular to the extending direction of the gantry 2, and the end of the gantry 2 far from the driven shaft 22 is communicated with the first notch groove 24. The second notch groove 11 is opened on the support member 13 of the frame 1, so that the two first notch grooves 24 are arranged between the two second notch grooves 11, and one side wall of the support member 13 is communicated with the second notch groove 11.

[0057] Generally, the gantry 2 includes two parallel fixed plates and a connecting plate arranged between the two fixed plates. The driving shaft 23 and the driven shaft 22 are arranged at both ends of the fixed plate in the extending direction. The first notch groove 24 is arranged at the end of the fixed plate far from the driven shaft 22. The conveyor belt 21 is sleeved outside the driving shaft 23, the driven shaft 22 and the connecting plate.

[0058] Furthermore, support positioning seats 14 are also arranged at the four corners of the frame 1 to adjust the height of the frame 1 relative to the ground.

[0059] Specifically, the support positioning seat 14 includes a threaded rod, a threaded sleeve, and a support foot. The threaded rod is vertically and fixedly arranged through the support member 13. The threaded sleeve is provided with an internal thread that mates with the threaded rod. The threaded sleeve is threadedly connected to the threaded rod to arrange the threaded sleeve below the support member 13. The support foot is sleeved on one end of the threaded sleeve away from the support member 13. During use, when the device reaches the designated position, the staff can adjust the length of the support positioning seat 14 by rotating the threaded sleeve so that the support foot contacts the ground to fix the device to the corresponding position and improve stability.

[0060] Preferably, a runner is further arranged on the lower end surface of the support member 13. When the device needs to be moved, rotate the threaded sleeve to shorten the length of the support positioning seat 14 so that the runner contacts the ground to achieve the movement of the conveyor.

[0061] Of course, in actual production applications, there are various ways of the support positioning seat 14, which will not be elaborated one by one here, and all are within the protection scope of the present utility model.

[0062] In one embodiment, referring to the accompanying drawings of the specification Figure 1 , this embodiment further describes the conveyor. The conveyor further includes a protective cover 61, a motor 62, a synchronous pulley 63, a belt 64, and a driving pulley 65. The driving pulley 65 is arranged at the output end of the motor 62. The synchronous pulley 63 is located outside the frame 1 and is arranged on the driving shaft 23. The belt 64 is sleeved outside the driving pulley 65 and the synchronous pulley 63 to drive the synchronous pulley 63 to rotate through the motor 62, and then drive the driving shaft 23 to rotate relative to the first bushing assembly 3 and the second bushing assembly 4. The protective cover 61 is connected to the frame 1 and is located outside the synchronous pulley 63 and the driving pulley 65. The setting of the protective cover 61 can reduce the adverse effects of the external environment on the motor 62, the synchronous pulley 63, the belt 64, and the driving pulley 65 and extend the service life.

[0063] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A conveyor, characterized in that, It includes a frame, a bench, a first bushing assembly, a second bushing assembly, a conveyor belt, a driving shaft, and a driven shaft provided at one end in the extending direction of the bench. A first notch groove is provided at one end of the bench away from the driven shaft, and a second notch groove opposite to the first notch groove is provided on the frame; The first bushing assembly and the second bushing assembly are sleeved outside the driving shaft so that the driving shaft rotates relative to the first bushing assembly and the second bushing assembly. The first bushing assembly is arranged relative to the first notch groove and is fixedly connected to the bench. The second bushing assembly is arranged in the second notch groove and is fixedly connected to the frame. The conveyor belt is sleeved outside the driving shaft and the driven shaft, and the driving shaft is used to drive the driven shaft to rotate through the conveyor belt.

2. The conveyor according to claim 1, characterized in that, Both the first bushing assembly and the second bushing assembly are provided with two, and the two first bushing assemblies are located between the two second bushing assemblies.

3. The conveyor according to claim 2, wherein, The first bushing assembly includes a first sleeve sleeved outside the driving shaft. The first sleeve is fixedly connected to the bench, and the driving shaft is adapted to rotate relative to the first sleeve.

4. A conveyor according to claim 3, characterized in that, The second bushing assembly includes a second sleeve, a bearing, and a third sleeve that is snap-fitted with the second notch groove. The bearing is arranged in the third sleeve and is sleeved outside the driving shaft; One end of the second sleeve extends into the first sleeve, and the other end of the second sleeve is fixedly connected to the third sleeve.

5. A conveyor according to claim 4, characterized in that The first bushing assembly further includes a wear-resistant sleeve sleeved outside the second sleeve, and the wear-resistant sleeve is located in the first sleeve.

6. The conveyor according to claim 4, characterized in that, It further includes a fixing seat. The fixing seat is arranged on the frame and is fixedly connected to the third sleeve.

7. A conveyor according to any one of claims 2-6, characterized in that, It further includes a protective cover, a motor, a synchronous pulley, a belt, and a driving pulley provided at the output end of the motor. The synchronous pulley is located outside the frame and is arranged on the driving shaft. The belt is sleeved outside the driving pulley and the synchronous pulley to drive the synchronous pulley to rotate through the motor, and then drive the driving shaft to rotate; The protective cover is connected to the frame and is located outside the synchronous pulley and the driving pulley.

8. A conveyor according to claim 7, characterized in that, It further includes a telescopic assembly. The frame includes a connecting member and two support members arranged in parallel. The connecting member is arranged between the two support members. The bench is arranged between the two support members. The second notch groove is provided on each support member; One end of the telescopic assembly is hinged to the connecting member, and the other end of the telescopic assembly is hinged to one end of the bench away from the driving shaft. The telescopic assembly extends or contracts to drive the bench to rotate, so that the goods on the bench are separated from the conveyor belt.

9. A conveyor according to claim 8, wherein One side wall of each support member communicates with the second notch groove. The first notch groove is provided with two, and the two first notch grooves are respectively arranged at both ends perpendicular to the extending direction of the bench, and one end of the bench away from the driven shaft communicates with the first notch groove.

10. A conveyor according to claim 9, characterized in that, Support positioning seats are also arranged at the four corners of the frame for adjusting the height of the frame relative to the ground.

11. A conveyor according to claim 10, characterized in that, It further includes a rejection box which is used to receive the goods separated from the conveyor belt.

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