CN210029005U

CN210029005U - Material conveying system

Info

Publication number: CN210029005U
Application number: CN201920540367.0U
Authority: CN
Inventors: 冯宇
Original assignee: Beijing Jingdong Century Trading Co Ltd; Beijing Jingdong Shangke Information Technology Co Ltd
Current assignee: Beijing Jingdong Qianshi Technology Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-07
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a material conveying system belongs to storage logistics technical field. The material conveying system comprises a first conveying line, a second conveying line capable of being turned over, a first material receiving device and a second material receiving device, wherein the first material receiving device and the second material receiving device are respectively positioned below the tail ends of the first conveying line and the second conveying line; the first material receiving device is used for receiving the materials falling from the tail end of the first conveying line when the second conveying line is located at the second position; the second material receiving means is arranged to receive material falling from the end of the second conveyor line when the second conveyor line is in the first position. The second conveying line is arranged in a turnover mode, so that the characteristics of the shape, hardness and the like of the material are not limited, and the universality is strong; the process of material to frame is more convenient and takes up little space.

Description

Material conveying system

Technical Field

The utility model relates to a storage logistics technical field especially relates to a material conveying system.

Background

During the operation of the material on the conveying system, the conveying route of the material needs to be switched to reach the position. For example, different types of materials are conveyed to corresponding material frames when the same linear conveying system conveys different types of materials. There are many automated mechanisms in the art that can perform such functions, such as side-pushing mechanisms, gripping mechanisms, suction mechanisms, and the like. The side pushing mechanism can be located on one side of the linear conveying system, and when specific materials are detected, the side pushing mechanism pushes the materials to change the original linear motion mode, and then the materials move towards the corresponding material frame. The gripping mechanism, the suction mechanism and the like also change the conveying path to reach the position.

In the specific operation process, the inventor finds that for objects with thin appearance and light weight, such as letters, documents, thin paper boards, thin books and the like, the materials have soft outer appearance due to the appearance, and are not suitable for being changed by mechanisms such as side pushing, clamping, sucking and the like to reach the position, so that the reaching of the special materials is difficult without depending on manpower.

To this end, it is desirable to provide a material conveying system to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a material conveying system aim at can realize material direction of delivery's switching, wherein the appearance of material etc. is unrestricted, and the commonality is strong.

An embodiment of the utility model provides another aim at of commodity circulation conveying system can realize material conveying line's transform and make the material reach the position more swiftly, and occupation space is little.

To achieve the purpose, the utility model adopts the following technical proposal:

a material conveying system comprising:

the first conveying line is used for conveying materials;

a second conveyor line disposed downstream of the first conveyor line, the second conveyor line configured to be reversible to switch between a first position where an end of the first conveyor line is docked and a second position spaced from the end of the first conveyor line;

the first material receiving device is arranged below the tail end of the first conveying line and used for receiving the materials falling from the tail end of the first conveying line when the second conveying line is located at the second position;

and the second material receiving device is arranged below the tail end of the second conveying line and is used for receiving the materials falling from the tail end of the second conveying line when the second conveying line is positioned at the first position.

As an alternative to the above material conveying system, the second conveying line comprises:

a support;

the conveying belt line body is arranged above the support and comprises an upstream end and a downstream end which are arranged along the conveying direction, and the upstream end can be butted with the tail end of the first conveying line;

a turnover mechanism disposed below the conveyor line body, the turnover mechanism configured to be capable of driving the conveyor line body to turn over to switch the upstream end between the first position and the second position.

As an alternative to the above material conveying system, the turnover mechanism includes a first rotating shaft connecting the conveyor line body and the support, the first rotating shaft is located between the upstream end and the downstream end, and the conveyor line body is configured such that when turned over, the upstream end is raised and the downstream end is lowered.

As an alternative of the above material conveying system, the turnover mechanism includes a turnover cylinder, a cylinder body of the turnover cylinder is hinged to the support, and a driving end of the turnover cylinder is hinged to the conveying belt line body.

As an alternative of the above material conveying system, the second conveying line further includes a fixing seat connected to the conveying line body, and two bearing seats connected to the support, the fixing seat is located between the bearing seats, the fixing seat is provided with a through hole, the first rotating shaft is inserted into the through hole, and two ends of the first rotating shaft are respectively mounted on the bearing seats.

As an alternative of the material conveying system, the second conveying line further comprises an overturning limiting block, the overturning limiting blocks are all arranged below the conveying belt line body, one end of each overturning limiting block is connected with the conveying belt line body, and the other end of each overturning limiting block faces the support; the overturning limiting block is provided with an overturning inclined plane towards one end of the support, and the overturning inclined plane is configured to limit the maximum overturning angle of the conveying belt line body.

As an alternative of the above material conveying system, the second conveying line further includes an initial limit block located at an upstream of the turnover limit block, the initial limit block is disposed below the conveying line body, and one end of the initial limit block facing the support can be abutted to the support so that the second conveying line is located at the first position.

As an alternative of the material conveying system, the support is provided with a turnover cushion pad corresponding to the turnover limiting block.

As an alternative of the above material conveying system, an initial cushion pad corresponding to the initial limit block is further arranged on the bracket.

As an alternative of the material conveying system, the maximum overturning angle of the conveying belt line body ranges from 15 degrees to 45 degrees.

As an alternative to the above material conveying system, the conveyor line body comprises:

a frame;

the belt pulleys comprise an upstream belt pulley and a downstream belt pulley which are positioned at two ends of the frame;

the conveying belt is wound on the upstream belt wheel and the downstream belt wheel;

drive assembly, including motor and hold-in range wheelset, hold-in range wheelset includes the action wheel, follows the driving wheel and around locating the action wheel with follow the hold-in range on the driving wheel, follow the driving wheel through the second pivot with the upper reaches band pulley or the low reaches band pulley is connected, wherein the motor is located under the frame.

As an alternative of the material conveying system, a mounting plate is connected below the conveying belt line body, a yielding groove used for conveying the conveying belt is formed in the upper side of the mounting plate, and connecting portions connected with the rack are arranged at two ends of the yielding groove.

As an alternative to the above material conveying system, the material conveying system further comprises a second material receiving means arranged below the end of the second conveyor line for receiving the material falling from the end of the second conveyor line when the second conveyor line is in the first position.

Above-mentioned among the utility model an embodiment has following advantage or beneficial effect:

1) the second conveying line is arranged in a turnover mode and can be selectively butted with or separated from the tail end of the first conveying line to switch the conveying direction of the materials, so that the material classification can be realized only by linear conveying of the material conveying system, the process of conveying the materials to the frame is more convenient, and the occupied space is small;

2) the conveying direction of the materials is switched through overturning, the shapes, hardness and other characteristics of the materials are not limited, the materials can be used for objects with thin shapes and light weight, and the objects with soft outer contours can also be used, and the universality is high.

Drawings

Fig. 1 is a schematic structural view of a second conveyor line in a material conveying system according to an embodiment of the present invention in a first position;

fig. 2 is a schematic structural view of a second conveyor line in a material conveying system according to an embodiment of the present invention at a second position;

fig. 3 is a schematic structural view of a second conveyor line in an embodiment of the present invention;

fig. 4 is an exploded view of a second conveyor line in an embodiment of the invention;

fig. 5 is a schematic structural diagram of a mounting plate in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first rotating shaft in an embodiment of the present invention;

fig. 7 is a cross-sectional view of a second conveyor line in an embodiment of the invention.

In the figure:

100. material preparation;

1. a first conveyor line;

2. a second conveyor line; 21. turning over the air cylinder; 22. mounting a plate; 221. a yielding groove; 222. a connecting portion; 23. turning over the limiting block; 24. an initial limiting block; 25. turning over the cushion pad; 26. an initial cushion; 27. a first rotating shaft; 271. a main body portion; 272. an installation part; 28. a fixed seat; 29. a bearing seat; 210. a spacer sleeve;

3. a first material receiving device; 4. a second material receiving device;

5. conveying a belt body; 51. an upstream end; 52. a downstream end; 53. a conveyor belt; 54. a frame; 55. a driving wheel; 56. a driven wheel; 57. a synchronous belt; 58. a motor base; 59. a synchronous belt cover; 510. a motor;

6. and (4) a bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Fig. 1 is a schematic structural view of a second conveyor line in a material conveying system according to an embodiment of the present invention in a first position; fig. 2 is a schematic structural diagram of a material conveying system in which a second conveying line is in a second position according to an embodiment of the present invention. As shown in fig. 1 and 2, the present embodiment discloses a material conveying system including a first conveying line 1 and a second conveying line 2 for conveying a material 100. The first conveyor line 1 is located upstream, the second conveyor line 1 is located downstream of the first conveyor line 1, and the second conveyor line 2 is configured to be capable of being flipped to switch between a first position abutting the end of the first conveyor line 1 and a second position spaced from the end of the first conveyor line 1. The material conveying system further comprises a first material receiving device 3 arranged below the tail end of the first conveying line 1, and optionally, a second material receiving device 4 arranged below the tail end of the second conveying line 1, and the first material receiving device is used for receiving the material falling from the tail end of the first conveying line 1 when the second conveying line 2 is located at the second position; the second material receiving means 4 is arranged to receive material falling from the end of the second conveyor line 2 when the second conveyor line 2 is in the first position. The second conveying line 2 is arranged in a turnable manner, so that the second conveying line can be selectively butted with or separated from the tail end of the first conveying line 1 to switch the conveying direction of the materials 100, and the first material receiving device 3 and the second material receiving device 4 are respectively positioned below the tail ends of the first conveying line 1 and the second conveying line 2, so that the materials 100 can be classified by only carrying out linear conveying on the material conveying system, the process of the materials 100 reaching corresponding positions is more convenient, and the occupied space is small; and the conveying direction of the material 100 is switched by turning, wherein the characteristics of the material 100 such as appearance, hardness and the like are not limited, and the material 100 has strong universality for objects with thinner appearance and lighter weight and objects with softer outline. Wherein first transfer chain 1 can be fixed transfer chain, also can be for being similar to the switching transfer chain that second transfer chain 2 can overturn.

Fig. 3 is a schematic structural diagram of a second conveyor line 2 in an embodiment of the present invention. Fig. 4 is an exploded view of a second conveyor line 2 in an embodiment of the invention. Specifically, the first conveyor line 1 and the second conveyor line 2 each include a support 6, and a conveyor belt line body 5 located above the support 6, wherein referring to fig. 3, the second conveyor line 2 further includes a turnover mechanism located below the conveyor belt line body 5. The conveyor line body 5 comprises an upstream end 51 and a downstream end 52 arranged in the conveying direction, wherein the upstream end 51 is capable of abutting against the first conveyor line 1; the overturning mechanism is configured to be capable of driving the conveyor line body 5 to overturn, so that the upstream end 51 of the conveyor line body 5 is switched between the first position and the second position. Second transfer chain 2 is through rising with first transfer chain 1 butt joint upstream end 51 when the upset for upstream end 51 is higher than the normal conveying height of first transfer chain 1, and material 100 can directly reach first material receiving arrangement 3 through first transfer chain 1 like this, compares and reduces in the one end that is close to first transfer chain 1 with second transfer chain 2 and realizes the upset, and the former can not make material 100 bump with the transfer chain body 5 when falling into first material receiving arrangement 3.

Alternatively, referring to fig. 3 and 4, in the present embodiment, the overturning mechanism includes a first rotating shaft 27 connecting the conveyor line body 5 and the support 6, the first rotating shaft 27 is located between the upstream end 51 and the downstream end 52, and when the conveyor line body 5 is configured to overturn, the upstream end 51 is raised and the downstream end 52 is lowered. Optionally, the turnover mechanism includes a turnover cylinder 21, a cylinder body of the turnover cylinder 21 is hinged to the support 6, and a driving end of the turnover cylinder 21 is hinged to the conveyor line body 5. By arranging the first rotating shaft 27 between the upstream end 51 and the downstream end 52, the overturning cylinder 21 for driving the conveyor line body 5 can be arranged on the side close to the downstream end 52, so that the material 100 on the first conveying line 1 is prevented from colliding with the overturning cylinder 21 when the overturning cylinder 21 is arranged on the side close to the upstream end 51 and the upstream end 51 is possibly lifted, and the material 100 reaches the position.

Specifically, optionally, the conveyor line body 5 includes a frame 54, a belt pulley, a conveyor belt 53 and a driving assembly, wherein the frame 54 includes an upstream belt pulley and a downstream belt pulley at two ends of the frame 54; the conveying belt 53 is wound on the upstream belt pulley and the downstream belt pulley; the driving assembly comprises a motor 510 and a synchronous pulley set, the motor 510 is fixedly connected with the frame 54 through a motor base 58, the synchronous pulley set comprises a driving wheel 55, a driven wheel 56 and a synchronous belt 57 wound on the driving wheel 55 and the driven wheel 56, the driven wheel 56 is connected with an upstream belt wheel or a downstream belt wheel through a second rotating shaft, and the motor 510 is located under the frame 54. Through addding the synchronous pulley group, motor 510 can be located the conveyer belt 53 below rather than installing in one side of frame 54 for the conveyer belt line body 5 can the rational utilization space, and the outward appearance is neater pleasing to the eye. The timing pulley group is further provided with a timing belt cover 59 for covering the drive pulley 55, the driven pulley 56, and the timing belt 57.

Fig. 5 is a schematic structural diagram of a mounting plate 22 according to an embodiment of the present invention. Further alternatively, referring to fig. 4 and 5, the conveyor line body 5 and the support 6 are connected by a mounting plate 22, the mounting plate 22 is located below the conveyor line body 5, an upper side of the mounting plate 22 is provided with an abdicating groove 221 for conveying the conveyor belt 53, and two ends of the abdicating groove 221 are provided with connecting portions 222 connected with the frame 54. The driving end of the turning cylinder 21 can be directly connected with the mounting plate 22 to realize the connection with the conveyor line body 5. Wherein the below of mounting panel 22 is connected with the fixing base 28 that is used for first pivot 27 to wear to establish, is provided with two bearing frames 29 on the support 6, and fixing base 28 is located between two bearing frames 29 to fixing base 28 adopts staple bolt formula structure, and it is provided with the through-hole, and first pivot 27 wears to locate in the through-hole, can the relative fixing base 28 rotation, and the both ends of first pivot 27 are installed with bearing frame 29 respectively. In this embodiment, the mounting plate 22 is connected with two fixing seats 28, and two fixing seats 28 are located between two bearing seats 29, ensure the stability when the conveyor belt line body 5 overturns. In addition, fig. 6 is a schematic structural diagram of a first rotating shaft 27 in an embodiment of the present invention. Referring to fig. 4 and 6, the first rotating shaft 27 is divided into a main body 271 in the middle and mounting portions 272 at both ends, the diameter of the mounting portions 272 is smaller than that of the main body 271, and the length of the mounting portions 272 is greater than the width of the bearing housing 29, so as to facilitate the mounting of the first rotating shaft 27 and the bearing housing 29 at both ends. In order to prevent the first rotating shaft 27 from moving between the bearing seats 29, the mounting portions 272 at both ends of the first rotating shaft 27 are provided with spacers 210, one end of each spacer 210 abuts against the bearing seat 29, and the other end abuts against the shaft space between the body 271 and the mounting portion 272.

Fig. 7 is a cross-sectional view of a second conveyor line 2 in an embodiment of the invention. Further optionally, referring to fig. 4 and 7, the second conveyor line 2 includes an initial stopper 24 and an overturning stopper 23 arranged along the conveying direction, the initial stopper 24 and the overturning stopper 23 are both arranged below the conveyor line body 5 and connected to the mounting plate 22, wherein one end of each of the overturning stopper 23 and the initial stopper 24 is connected to the conveyor line body 5, and the other end of each of the overturning stoppers 23 and the initial stopper 24 is arranged toward the support 6; one end of the initial limiting block 24 facing the bracket 6 can be abutted against the bracket 6 so as to enable the conveyor belt line body 5 to be in an initial state; the overturning limiting block 23 is provided with an overturning inclined plane towards one end of the support 6, and the overturning inclined plane is configured to limit the maximum overturning angle of the conveyor belt line body 5. Wherein the maximum overturning angle range of the conveyor belt line body 5 is 15-45 degrees. The maximum turning angle of the optional conveyor line body 5 in this embodiment is 25 °. Can be so that the flip angle of the conveying belt line body 5 is in reasonable within range through setting up the biggest flip angle, avoid the too big initial position that makes of flip angle, even second transfer chain 2 is in can with the first position of 1 end butt joints of first transfer chain take time longer and then influence conveying efficiency, avoid the transfer chain of flip angle undersize can't ensure the upper reaches simultaneously and can carry assigned position 100 smoothly. Further optionally, the bracket 6 is provided with an initial cushion 26 and a turnover cushion 25 corresponding to the initial stopper 24 and the turnover stopper 23, respectively, so that the impact between the first position where the initial stopper 24 returns from the turnover state to the bracket 6 and the impact between the second position where the turnover stopper 23 reaches the second conveyor line from the first position of the second conveyor line 2 and the bracket 6 can be avoided. Wherein, initial blotter 26 highly be higher than upset blotter 25, when second transfer chain 2 is in the primary importance promptly, initial stopper 24's one end and initial blotter 26 butt exist the space between upset stopper 23 and the upset blotter 25, set up like this and can reserve the upset space when 5 upsets for the conveyor line body, interfere with upset blotter 25 when avoiding the upset of upset stopper 23, influence the normal upset of conveyor line body 5. Of course, in other embodiments, the second conveying line 2 may only be provided with the overturning limiting block 24 and the overturning buffering pad 26 corresponding to the overturning limiting block 24.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A material transfer system, comprising:

a first conveyor line (1) for conveying material (100);

a second conveyor line (2) disposed downstream of the first conveyor line (1), the second conveyor line (2) being configured to be reversible to switch between a first position abutting against an end of the first conveyor line (1) and a second position spaced from the end of the first conveyor line (1);

the first material receiving device (3) is arranged below the tail end of the first conveying line (1) and used for receiving the materials falling from the tail end of the first conveying line (1) when the second conveying line (2) is located at the second position.

2. The material conveying system according to claim 1, characterized in that the second conveying line (2) comprises:

a bracket (6);

the conveying belt line body (5) is arranged above the support (6), the conveying belt line body (5) comprises an upstream end (51) and a downstream end (52) which are arranged along the conveying direction, and the upstream end (51) can be butted with the tail end of the first conveying line (1);

a turning mechanism arranged below the conveyor line body (5), the turning mechanism being configured to be able to drive the conveyor line body (5) to turn over to switch the upstream end between the first position and the second position.

3. The material conveying system according to claim 2, characterized in that the overturning mechanism comprises a first rotating shaft (27) connecting the conveyor line body (5) and the support (6), the first rotating shaft (27) being located between the upstream end (51) and the downstream end (52), the upstream end (51) being raised and the downstream end (52) being lowered when the conveyor line body (5) is overturned.

4. The material conveying system according to claim 2 or 3, characterized in that the turning mechanism comprises a turning cylinder (21), the cylinder body of the turning cylinder (21) is hinged with the bracket (6), and the driving end of the turning cylinder (21) is hinged with the conveyor line body (5).

5. The material conveying system according to claim 3, wherein the second conveying line (2) further comprises a fixing seat (28) connected with the conveyor line body (5) and two bearing seats (29) connected with the bracket (6), the fixing seat (28) is located between the bearing seats (29), wherein the fixing seat (28) is provided with a through hole, the first rotating shaft (27) is arranged in the through hole in a penetrating manner, and two ends of the first rotating shaft (27) are respectively installed with the bearing seats (29).

6. The material conveying system according to claim 3, wherein the second conveying line (2) further comprises an overturning limiting block (23), the overturning limiting block (23) is arranged below the conveyor line body (5), and one end of the overturning limiting block (23) is connected with the conveyor line body (5) and the other end is arranged towards the bracket (6); the overturning limiting block (23) is provided with an overturning inclined plane towards one end of the support (6), and the overturning inclined plane is configured to limit the maximum overturning angle of the conveyor belt line body (5).

7. The material conveying system according to claim 6, characterized in that the second conveying line (2) further comprises an initial stop block (24) located upstream of the overturning stop block, the initial stop block (24) being disposed below the conveyor line body (5), an end of the initial stop block (24) facing the bracket (6) being abuttable with the bracket (6) to place the second conveying line in the first position.

8. The material conveying system according to claim 6, characterized in that a turning cushion (25) corresponding to the turning stopper (23) is provided on the bracket (6).

9. The material conveying system according to claim 7, characterized in that an initial cushion pad (26) corresponding to the initial stopper (24) is further provided on the bracket (6).

10. A material conveying system according to claim 6, characterised in that the maximum turning angle of the conveyor line body (5) is in the range of 15 ° to 45 °.

11. The material conveying system according to claim 2, characterized in that the conveyor line body (5) comprises:

a frame (54);

pulleys including an upstream pulley and a downstream pulley at both ends of the frame (54);

a conveyor belt (53) wound around the upstream pulley and the downstream pulley;

drive assembly, including motor (510) and synchronous pulley group, synchronous pulley group includes action wheel (55), follows driving wheel (56) and around locating action wheel (55) with from synchronous belt (57) on driving wheel (56), follow driving wheel (56) through the second pivot with upstream belt pulley or the low reaches band pulley is connected, wherein motor (510) are located under frame (54).

12. The material conveying system according to claim 11, characterized in that a mounting plate (22) is connected below the conveyor line body (5), an abdicating groove (221) for conveying the conveyor belt (53) is arranged on the upper side of the mounting plate (22), and connecting parts (222) connected with the rack (54) are arranged at two ends of the abdicating groove (221).

13. The material conveying system according to claim 1, characterized in that the material conveying system further comprises a second material receiving device (4), which second material receiving device (4) is arranged below the second conveyor line end for receiving the material falling from the second conveyor line (2) end when the second conveyor line (2) is in the first position.