Conveyor belt

Abstract

The utility model relates to a conveying belt which comprises a plurality of parallel stringing strips and a mesh belt wound on the stringing strips. Chain pieces are arranged at the two ends of each string strip and used for connecting two adjacent string strips, the chain piece at at least one end is a connecting chain piece, the connecting chain piece comprises a connecting part and a supporting part, the connecting part comprises a bottom plate, the bottom plate is provided with a first edge and a second edge which are oppositely arranged, the first edge and the second edge are both perpendicular to the axis of the string strip, the first edge is provided with a first side plate extending downwards, and the second edge is provided with a second side plate extending downwards. The first edge is provided with a first side plate extending downwards, the second edge is provided with a second side plate extending downwards, one end, away from the bottom plate, of the second side plate is provided with a fixing part extending in the direction away from the first side plate, the first side plate is provided with a first through hole, the second side plate is provided with a second through hole, the supporting part is arranged on the bottom plate, and the supporting part is provided with a hollow structure used for ventilation. The phenomenon that the mesh belt is clamped by the connecting chain pieces can be prevented, and the failure rate is reduced; a traditional kidney-shaped hole structure is replaced with the round holes, the single-side fixed pitch is achieved, and the strength of the connecting chain pieces is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food conveying, in particular to a conveyor belt. Background Art

[0002] With the progress of science and the development of society, the food processing field, food hygiene and safety, the clean conditions of food machinery, production efficiency, etc. are increasingly valued. At present, in food transportation, especially in food cooling and quick-freezing food machinery, the spiral transmission conveyor belt has the following basic structure: there are chains on both sides of the belt, and the chains are connected together by the middle connecting rod. The bottom supports the belt through the support track, and the belt is driven by the friction between the rotation of the middle drum and the belt.

[0003] However, there are the following shortcomings: on the one hand, the drum is large in size and complex in structure. The friction transmission between the friction strip on the drum and the inner ring of the mesh belt will cause serious wear of the components, and the friction transmission position is on the inner side of the mesh belt, the structure is complex and difficult to clean; on the other hand, the bottom of the conveyor mesh belt device requires a track for guide support, and the track position is below the mesh belt, the structure is complex and difficult to clean.

[0004] Although some transmission systems currently use self-stacking mesh belts with chains on the sides to replace the tracks at the bottom of the conveyor mesh belt device, which can solve the above problems, the sides of the chain plates are closed, the mesh surface is not easy to clean and air can only enter from the top, which greatly affects the freezing efficiency. In addition, the matching part between the chain plates and the middle connecting rods is a bevel structure. In the actual manufacturing process, when the mesh belts transition from the straight segment to the arc segment, relative displacement will occur between the mesh belts. Since the middle connecting rods and the chain plates are fixed, there is an angular position relationship between the mesh belt and the inclined surface of the chain plates. When relative displacement occurs between the chain plates and the mesh belt, the mesh belt will press against the inclined surface of the chain plates and cannot be reset in time, causing the mesh belt to get stuck.

[0005] Therefore, there is a need for a conveyor belt that can increase air intake efficiency, improve freezing efficiency, be easy to clean, prevent the mesh belt from getting stuck, and reduce the failure rate. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a transmission belt.

[0007] The technical solution of the utility model is as follows:

[0008] The strap is configured to extend the length of the strap so that the strap can extend past the first and second ends of the strap, wherein the strap has a first end and a second end, the strap being configured to extend past the first and second ends of the strap, and a second end being configured to extend past the first and second ends of the strap.

[0009] As a further improvement of the present invention, the first side is Z-shaped, comprising an outer convex edge and an inner concave edge alternately arranged along the axial direction of the string, the inner concave edge is opposite to the second side panel, and the first side panel is arranged on the outer convex edge.

[0010] As a further improvement of the utility model, the inner concave edge is provided with a third side plate extending downward, and the third side plate is provided with a plurality of clearance holes.

[0011] As a further improvement of the present invention, the inner concave edge is provided with a fourth side panel extending upward.

[0012] As a further improvement of the present invention, a third through hole is provided on the second side plate, and the third through hole is located between the first through hole and the second through hole.

[0013] As a further improvement of the utility model, the fixing part includes a first fixing plate connected to the second side plate, a second fixing plate arranged at an end of the first fixing plate away from the second side plate, a third fixing plate and a fourth fixing plate arranged on the second fixing plate, the third fixing plate corresponds to the second through hole, and the fourth fixing plate corresponds to the third through hole; one string of bars passes through the second through hole and is fixed on the third fixing plate, and adjacent strings of bars pass through the third through hole and are fixed on the fourth fixing plate.

[0014] As a further improvement of the present invention, the support portion is a polygon formed by bending a metal strip, and the top of the support portion is parallel to the bottom plate.

[0015] As a further improvement of the present invention, a guide plate extending in a direction away from the second side plate is provided at the lower end of the first side plate.

[0016] As a further improvement of the utility model, the first end of the string is provided with the connecting chain plate, the second end of the string is provided with a supporting chain plate, the supporting chain plate is provided with a fourth through hole and a fifth through hole, the fourth through hole and / or the fifth through hole are waist holes, and one of the string is inserted into the fourth through hole of one of the supporting chain plates and the fifth through hole of the adjacent supporting chain plate.

[0017] As a further improvement of the present invention, both the first through hole and the second through hole are round holes.

[0018] As a further improvement of the utility model, the supporting chain plate includes a first supporting plate and a second supporting plate connected to each other, the first supporting plate and the second supporting plate are staggered along the axial direction of the string, the fourth through hole is arranged on the first supporting plate, the fifth through hole is arranged on the second supporting plate, the second supporting plate is provided with a sixth through hole, the sixth through hole is located between the fourth through hole and the fifth through hole, and the first supporting plate and / or the second supporting plate are provided with ventilation holes.

[0019] As a further improvement of the utility model, a fifth fixing plate is provided at the lower end of the first support plate and extends along the axis of the string bar in a direction away from the connecting chain plate, and a sixth fixing plate is provided at one end of the fifth fixing plate away from the first support plate and extends upward, and a seventh fixing plate and an eighth fixing plate are provided on the sixth fixing plate; one string bar passes through the fifth through hole and is fixed on the seventh fixing plate, and an adjacent string bar passes through the sixth through hole and is fixed on the eighth fixing plate.

[0020] According to the utility model of the above scheme, the beneficial effects of the utility model are:

[0021] The utility model can increase the air intake efficiency and improve the freezing efficiency by providing a connecting chain piece with a hollow structure; the first side plate and the second side plate are perpendicular to the string bar, which is convenient for the mesh belt to penetrate during the manufacturing process, and the first side plate and the mesh belt are nearly parallel, which can prevent the connecting chain piece from getting stuck in the mesh belt and reduce the failure rate; round holes are used to replace the traditional waist hole structure to achieve a single-sided fixed pitch, and there is no relative displacement during the mesh belt transmission process, which greatly improves the strength of the connecting chain piece; the overall structure is simple and easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the connecting chain piece of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the first embodiment of the connecting portion of the utility model at a first angle;

[0025] Figure 4 It is a structural schematic diagram of the second angle of the first embodiment of the connecting portion of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the second embodiment of the connecting part of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the third embodiment of the connecting portion of the utility model at a first angle;

[0028] Figure 7 It is a structural schematic diagram of the third embodiment of the connecting portion of the utility model at a second angle;

[0029] Figure 8 It is a structural schematic diagram of the supporting chain piece of the utility model.

[0030] In the figure: 1, string; 2, mesh belt; 3, connecting chain; 31, connecting part; 311, bottom plate; 3111, second edge; 3112, outer convex edge; 3113, inner concave edge; 312, first side plate; 313, second side plate; 314, first through hole; 315, second through hole; 316, third side plate; 317, fourth side plate; 318, third through hole; 319, guide plate; 32, support part; 321, hollow structure ; 33. Fixing part; 331. First fixing plate; 332. Second fixing plate; 333. Third fixing plate; 334. Fourth fixing plate; 335. Platform plate; 4. Support chain plate; 41. First supporting plate; 42. Second supporting plate; 43. Fourth through hole; 44. Fifth through hole; 45. Sixth through hole; 46. Fifth fixing plate; 47. Sixth fixing plate; 48. Seventh fixing plate; 49. Eighth fixing plate; 40. Ventilation hole. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship described in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] See also Figure 1 and Figure 2The utility model provides a conveyor belt, comprising a plurality of parallel strings 1 and a mesh belt 2 wound around the plurality of strings 1; both ends of the strings 1 are provided with chain pieces, the chain pieces are used to connect two adjacent strings 1, at least one end of the chain piece is a connecting chain piece 3, the connecting chain piece 3 comprises a connecting portion 31 and a supporting portion 32, in actual use, the connecting chain pieces 3 are stacked, the supporting portion 32 of the lower connecting chain piece 3 supports the upper connecting portion 31 and the strings 1, the connecting portion 31 comprises a bottom plate 311, the bottom plate 311 has a relatively arranged The first side and the second side 3111 of the string strip 1 are both perpendicular to the axis of the string strip 1. The first side is provided with a first side plate 312 extending downward, and the angle between the first side plate 312 and the bottom plate 311 is greater than or equal to 90°, that is, the first side plate 312 is inclined toward the direction close to the mesh belt 2. Preferably, the first side plate 312 is perpendicular to the bottom plate 311, and the second side 3111 is provided with a second side plate 313 extending downward, and the angle between the second side plate 313 and the bottom plate 311 is greater than or equal to 90°, that is, the second side plate 3 13 is inclined in a direction away from the mesh belt 2. Preferably, the second side plate 313 is perpendicular to the bottom plate 311. The end of the second side plate 313 away from the bottom plate 311 is provided with a fixing portion 33 extending away from the first side plate 312. The first side plate 312 is provided with a first through hole 314. The second side plate 313 is provided with a second through hole 315. The support portion 32 is arranged on the bottom plate 311. The support portion 32 is provided with a hollow structure 321 for ventilation. A string 1 is inserted into the first through hole 314 of a connecting chain piece 3 and the adjacent connecting chain piece The second through hole 315 of the sheet 3 is fixed on the fixing portion 33 of the adjacent connecting chain sheet 3. The connecting chain sheet 3 with a hollow structure 321 can blow air horizontally from the side of the mesh belt 2, thereby improving the air intake efficiency and freezing efficiency of the mesh belt 2. The first side and the second side 3111 are both perpendicular to the string strips, which facilitates the insertion of the mesh belt 2 during the manufacturing process, and the first side plate is nearly parallel to the mesh belt, which can prevent the connecting chain sheet 3 from getting stuck in the mesh belt 2 and reduce the failure rate. At the same time, the overall structure of the connecting chain sheet 3 is simple and easy to clean.

[0035] See also Figure 3 and Figure 4As an embodiment of the utility model, the first side is Z-shaped, and the first side includes an outer convex edge 3112 and an inner concave edge 3113 staggered along the axial direction of the string bar 1, the inner concave edge 3113 is arranged opposite to the second side plate 313, the outer convex edge 3112 and the second side plate 313 are staggered, and the first side plate 312 is arranged on the outer convex edge 3112. When assembling, the first side plate 312 of a connecting chain piece 3 abuts against the inner concave edge 3113 of the adjacent connecting chain piece 3, and the first through hole 314 of the connecting chain piece 3 is aligned with the second through hole 315 of the adjacent connecting chain piece 3. Insert the string 1 to complete the assembly of two adjacent connecting chain pieces 3. Due to the staggered arrangement of the outer convex edge 3112 and the inner concave edge 3113, a gap is formed on one side of the inner concave edge 3113, which provides an installation space for the first side plate 312 of the adjacent connecting chain pieces 3, thereby improving the matching ability and combination stability between the two adjacent connecting chain pieces 3, avoiding unnecessary interference between the two adjacent connecting chain pieces 3 during movement, affecting the overall use, and effectively reducing the installation space of the connecting chain pieces 3, while maintaining the neatness of the overall structure of the conveyor belt.

[0036] As an embodiment of the utility model, the inner concave edge 3113 is provided with a third side plate 316 extending downward, and a plurality of clearance holes are provided on the third side plate 316. The clearance holes allow the string 1 to pass through, but prevent the mesh belt 2 passing through the string 1, thereby effectively blocking the mesh belt 2 and avoiding unnecessary interference between the support portion 32 of the lower connecting chain plate 3 and the mesh belt 2 on the upper string 1 during the actual manufacturing process, causing the mesh belt 2 to be stuck.

[0037] See also Figure 5 As an embodiment of the present invention, the inner concave edge 3113 is provided with a fourth side plate 317 extending upward, and the fourth side plate 317 is connected to the support portion 32. By adding the fourth side plate 317, the connection strength between the connecting portion 31 and the supporting portion 32 can be further strengthened, the risk of the supporting portion 32 and the connecting portion 31 falling off can be reduced, and the overall stability can be improved; at the same time, based on the blocking effect of the fourth side plate 317, in the actual manufacturing process, it can avoid unnecessary contact between the objects on the conveyor belt and other parts of the connecting chain 3, resulting in damage to the objects or the connecting chain 3, effectively reducing the failure rate of the connecting chain 3, and achieving the stability of the conveyor belt operation.

[0038] As an embodiment of the utility model, a third through hole 318 is provided on the second side plate 313, and the third through hole 318 is a circular hole. The third through hole 318 is located between the first through hole 314 and the second through hole 315, that is, the third through hole 318 is located between the first through hole 314 and the second through hole 315 in the X direction. After the string bar 1 passes through the third through hole 318, the connecting chain piece 3 can be positioned, and the position of each connecting chain piece 3 is restricted to a certain extent to avoid multiple adjacent connecting chain pieces 3 and adjacent string bars 1 from being too close together or too scattered, resulting in unnecessary damage to the mesh belt 2.

[0039] As an embodiment of the utility model, the fixing portion 33 includes a first fixing plate 331 connected to the second side plate 313, a second fixing plate 332 arranged at an end of the first fixing plate 331 away from the second side plate 313, a third fixing plate 333 and a fourth fixing plate 334 arranged on the second fixing plate 332, the third fixing plate 333 corresponds to the second through hole 315, and the fourth fixing plate 334 corresponds to the third through hole 318; a string bar 1 passes through the second through hole 315 and is fixed on the third fixing plate 333, and an adjacent string bar 1 passes through the third through hole 318 and is fixed on the fourth fixing plate 334, and line contact is achieved between the string bar 1 and the third fixing plate 333 or the fourth fixing plate 334. Compared with conventional spot welding contact, it can effectively increase the contact area between the string bar 1 and the fixing plate, and improve the fixing strength of the string bar 1.

[0040] As an embodiment of the present invention, a platform plate 335 for connection is provided between the first fixing plate 331 and the second side plate 313, which can facilitate the processing and manufacturing of the fixing portion 33 as a whole; see Figure 6 , the platform plate 335 may also be eliminated, and the first fixing plate 331 is directly connected to the second side plate 313 .

[0041] As an embodiment of the present invention, the support portion 32 is a polygon formed by bending a metal strip. The top of the support portion 32 is parallel to the bottom plate 311. The polygon can be in various shapes, such as a rectangle, a triangle, a rhombus or other polygons, preferably an inverted trapezoid. The angle between the long side and the waist of the inverted trapezoid is 60-65°, preferably 63°, which can effectively enhance the force strength of the support portion 32 and reduce the risk of collapse. Preferably, the support portion 32 can adopt the following two structures:

[0042] Structure 1: The support portion 32 has two separate ends, and both ends of the support portion 32 are connected to the upper surface of the connecting portion 31;

[0043] Structure 2: The support portion 32 is an integrally formed closed structure, and the lower end of the support portion 32 is arranged on the upper surface of the connecting portion 31 .

[0044] As an embodiment of the utility model, the two ends of the support portion 32 are staggered along the axial direction of the string 1, and the staggered angle of the two ends is 35-40°, and the best is 38°, which can effectively enhance the lateral force strength of the support portion 32, reduce the risk of tilting and collapse of the support portion 32, and enhance the overall stability.

[0045] See also Figure 6 and Figure 7 As an embodiment of the present invention, a guide plate 319 is provided at the lower end of the first side plate 312 extending in a direction away from the second side plate 313, and the angle between the guide plate 319 and the first side plate 312 is greater than 90°, that is, the guide plate 319 is inclined downwardly in a direction close to the mesh belt 2. When the upper and lower connecting chain plates 3 are stacked, the support portion 32 of the lower connecting chain plate 3 moves to the bottom of the bottom plate 311 of the upper connecting chain plate 3 under the guiding action of the guide plate 319 of the upper connecting chain plate 3, which is convenient for assembling the upper and lower connecting chain plates 3; and the guide plate 319 extends obliquely downward, which increases the downward extension amount of the first side plate 312 in the vertical direction, and has a better limiting effect on the support portion 32 of the lower connecting chain plate 3.

[0046] As an embodiment of the utility model, a connecting chain piece 3 is provided at the first end of the string 1, a supporting chain piece 4 is provided at the second end of the string 1, a fourth through hole 43 and a fifth through hole 44 are provided on the supporting chain piece 4, the fourth through hole 43 and / or the fifth through hole 44 are waist holes, a string 1 is inserted into the fourth through hole 43 of a supporting chain piece 4 and the fifth through hole 44 of an adjacent supporting chain piece 4, and through the waist hole structure, two adjacent supporting chain pieces 4 can move relative to each other, driving the adjacent strings 1 to shrink or expand, so that the conveyor belt can smoothly pass through the curved section.

[0047] As an embodiment of the utility model, the first through hole 314 and the second through hole 315 are both circular holes, which fix the spacing between two adjacent connecting chain plates 3 so that there is no relative displacement between the adjacent connecting chain plates 3 during the transmission process. The circular holes are used to replace the traditional waist hole structure to achieve unilateral fixed pitch, which greatly improves the strength of the connecting chain plates.

[0048] As an embodiment of the utility model, the support chain pieces 4 are arranged on the inner side of the conveyor belt, and the connecting chain pieces 3 are arranged on the outer side of the conveyor belt. When the conveyor belt enters a curved section, the adjacent support chain pieces 4 shrink and move together under the action of the waist holes, and the distance between adjacent connecting chain pieces 3 remains unchanged, that is, the distance between two adjacent strings 1 close to the inner side is smaller than the distance close to the outer side, so that the conveyor belt passes through the curved section. When the conveyor belt enters a straight section, the adjacent support chain pieces 4 expand and return to their initial positions, so that the distance between two adjacent strings 1 close to the inner side is equal to the distance close to the outer side, that is, the two adjacent strings 1 are parallel to each other, so that the conveyor belt passes through the straight section.

[0049] See also Figure 8 As an embodiment of the utility model, the support chain 4 includes a first support plate 41 and a second support plate 42 connected to each other. The first support plate 41 and the second support plate 42 are staggered along the axial direction of the string 1. When the conveyor belt enters a curved section, the first support plate 41 of a support chain 4 and the second support plate 42 of an adjacent support chain 4 can be staggered and overlapped without interference, thereby improving the matching ability and combination stability between adjacent support chains 4. The fourth through hole 43 is set on the first support plate 41, and the fifth through hole 44 It is arranged on the second support plate 42, and a sixth through hole 45 is provided on the second support plate 42. The sixth through hole 45 is located between the fourth through hole 43 and the fifth through hole 44, that is, the sixth through hole 45 is located between the fourth through hole 43 and the fifth through hole 44 in the X direction. After the string 1 passes through the sixth through hole 45, the support chain piece 4 can be positioned, and the position of each support chain piece 4 is restricted to a certain extent to avoid multiple adjacent support chain pieces 4 and adjacent strings 1 from being too close together or too scattered, resulting in unnecessary damage to the mesh belt 2.

[0050] As an embodiment of the utility model, the lower end of the first support plate 41 is provided with a fifth fixing plate 46 extending along the axis of the string 1 in the direction away from the connecting chain plate 3, and the end of the fifth fixing plate 46 away from the first support plate 41 is provided with a sixth fixing plate 47 extending upward, and the sixth fixing plate 47 is provided with a seventh fixing plate 48 and an eighth fixing plate 49; a string 1 passes through the fifth through hole 44 and is fixed on the seventh fixing plate 48, and an adjacent string 1 passes through the sixth through hole 45 and is fixed on the eighth fixing plate 49, so that line contact is achieved between the string 1 and the seventh fixing plate 48 or the eighth fixing plate 49. Compared with conventional spot welding contact, the contact area between the string 1 and the fixing plate can be effectively increased, thereby improving the fixing strength of the string 1.

[0051] As an embodiment of the utility model, ventilation holes 40 are provided on the first support plate 41 and / or the second support plate 42, which can blow air horizontally from the side of the mesh belt 2, thereby improving the air intake efficiency and freezing efficiency of the mesh belt 2.

[0052] In summary, the utility model provides a conveyor belt, which can blow air horizontally from the side of the mesh belt 2 through the connecting chain piece 3 with a hollow structure 321, thereby improving the air intake efficiency and freezing efficiency of the mesh belt 2; the first side and the second side 3111 are both perpendicular to the string bar, which is convenient for the mesh belt 2 to penetrate during the manufacturing process, and can prevent the connecting chain piece 3 from getting stuck in the mesh belt 2, thereby reducing the failure rate; at the same time, the overall structure of the connecting chain piece 3 is simple and easy to clean; the first side adopts a staggered edge structure, which improves the matching ability and combination stability between the two adjacent connecting chain pieces 3, avoids unnecessary interference between the two adjacent connecting chain pieces 3 during the movement process, affects the overall use, and effectively reduces the installation space of the connecting chain piece 3, while also maintaining the neatness of the overall structure of the conveyor belt; the third side plate 316 can effectively block the mesh belt 2 to avoid, during the actual manufacturing process, The support portion 32 of the lower connecting chain piece 3 interferes unnecessarily with the mesh belt 2 on the upper string 1, causing the mesh belt 2 to be stuck; line contact is achieved between the string 1 and the third fixing plate 333 or the fourth fixing plate 334, which can effectively increase the contact area between the string 1 and the fixing plate compared to conventional spot welding contact, and improve the fixing strength of the string 1; the two ends of the support portion 32 are staggered along the axial direction of the string 1, which can effectively enhance the lateral force strength of the support portion 32, reduce the risk of tilting or collapse of the support portion 32, and enhance the overall stability; the first through hole 314 and the second through hole 315 are both circular holes, which fix the spacing between two adjacent connecting chain pieces 3, so that there is no relative displacement between the adjacent connecting chain pieces 3 during the transmission process, and the circular hole is used to replace the traditional waist hole structure to achieve a single-sided fixed pitch, which greatly improves the strength of the connecting chain.

[0053] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A conveyor belt, characterized in that: The invention relates to a mesh belt (2) comprising a plurality of strings (1) arranged in parallel and a mesh belt (2) wound around the plurality of strings (1); a chain piece is provided at both ends of the strings (1), the chain piece is used to connect two adjacent strings (1), the chain piece at at least one end is a connecting chain piece (3), the connecting chain piece (3) comprises a connecting portion (31) and a supporting portion (32), the connecting portion (31) comprises a bottom plate (311), the bottom plate (311) has a first side and a second side (3111) arranged opposite to each other, the first side and the second side (3111) are both perpendicular to the axis of the strings (1), the first side is provided with a first side plate (312) extending downwards, the second side (3111) is provided with a first side plate (312) extending downwards A second side plate (313) extending from the bottom plate (311) is provided with a fixing portion (33) extending in a direction away from the first side plate (312) at one end of the second side plate (313) away from the bottom plate (311); a first through hole (314) is provided on the first side plate (312); a second through hole (315) is provided on the second side plate (313); the supporting portion (32) is arranged on the bottom plate (311); a hollow structure (321) for ventilation is provided on the supporting portion (32); one of the string strips (1) is inserted into the first through hole (314) of one of the connecting chain pieces (3) and the second through hole (315) of an adjacent connecting chain piece (3), and is fixed to the fixing portion (33).

2. The conveyor belt according to claim 1, characterized in that: The first side is Z-shaped, and comprises an outer convex edge (3112) and an inner concave edge (3113) arranged alternately along the axial direction of the string (1), the inner concave edge (3113) being opposite to the second side plate (313), and the first side plate (312) being arranged on the outer convex edge (3112).

3. The conveyor belt according to claim 2, characterized in that: The inner concave edge (3113) is provided with a third side plate (316) extending downward, and the third side plate (316) is provided with a plurality of clearance holes.

4. The conveyor belt according to claim 2, characterized in that: The inner concave edge (3113) is provided with a fourth side plate (317) extending upward.

5. The conveyor belt according to claim 1, characterized in that: The second side plate (313) is provided with a third through hole (318), and the third through hole (318) is located between the first through hole (314) and the second through hole (315).

6. The conveyor belt according to claim 5, characterized in that: The fixing portion (33) comprises a first fixing plate (331) connected to the second side plate (313), a second fixing plate (332) arranged at one end of the first fixing plate (331) away from the second side plate (313), a third fixing plate (333) and a fourth fixing plate (334) arranged on the second fixing plate (332), wherein the third fixing plate (333) corresponds to the second through hole (315), and the fourth fixing plate (334) corresponds to the third through hole (318); one string (1) passes through the second through hole (315) and is fixed to the third fixing plate (333), and an adjacent string (1) passes through the third through hole (318) and is fixed to the fourth fixing plate (334).

7. The conveyor belt according to claim 1, characterized in that: The support portion (32) is a polygon formed by bending a metal strip, and the top of the support portion (32) is parallel to the bottom plate (311).

8. The conveyor belt according to claim 1, characterized in that: A guide plate (319) extending in a direction away from the second side plate (313) is provided at the lower end of the first side plate (312).

9. The conveyor belt according to claim 1, characterized in that: The first end of the string (1) is provided with the connecting chain (3), the second end of the string (1) is provided with a supporting chain (4), the supporting chain (4) is provided with a fourth through hole (43) and a fifth through hole (44), the fourth through hole (43) and / or the fifth through hole (44) are waist holes, and one string (1) is inserted into the fourth through hole (43) of one supporting chain (4) and the fifth through hole (44) of an adjacent supporting chain (4).

10. The conveyor belt according to claim 9, characterized in that: The first through hole (314) and the second through hole (315) are both circular holes.

11. The conveyor belt according to claim 9, characterized in that: The supporting chain plate (4) comprises a first supporting plate (41) and a second supporting plate (42) which are connected to each other. The first supporting plate (41) and the second supporting plate (42) are arranged alternately along the axial direction of the string (1). The fourth through hole (43) is arranged on the first supporting plate (41), the fifth through hole (44) is arranged on the second supporting plate (42), the second supporting plate (42) is provided with a sixth through hole (45), and the sixth through hole (45) is located between the fourth through hole (43) and the fifth through hole (44). The first supporting plate (41) and / or the second supporting plate (42) are provided with ventilation holes (40).

12. The conveyor belt according to claim 11, characterized in that: A fifth fixing plate (46) is provided at the lower end of the first supporting plate (41) and extends along the axis of the string (1) in a direction away from the connecting chain plate (3); a sixth fixing plate (47) extending upward is provided at one end of the fifth fixing plate (46) away from the first supporting plate (41); a seventh fixing plate (48) and an eighth fixing plate (49) are provided on the sixth fixing plate (47); one string (1) passes through the fifth through hole (44) and is fixed on the seventh fixing plate (48), and an adjacent string (1) passes through the sixth through hole (45) and is fixed on the eighth fixing plate (49).

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