CN111268371A - Belt conveying device - Google Patents

Abstract

The invention discloses a belt conveying device, and belongs to the technical field of belt transmission. The belt conveying device comprises a conveying fixed plate and a conveying movable plate arranged on the conveying fixed plate, and the conveying movable plate can move up and down relative to the conveying fixed plate; the belt conveying mechanism comprises a belt, a driving wheel, a driven wheel and a tension wheel, wherein the driving wheel, the driven wheel and the tension wheel are used for winding the belt; the driving wheel is rotatably arranged on the conveying fixed plate; the driven wheel and the tension wheel are rotatably arranged on the conveying movable plate; the tension pulley can move up and down along with the conveying movable plate, so that the height of the tension pulley relative to the driving wheel is changed, and the tension state of the belt is further changed. The belt conveying device can realize the quick replacement of the belt only by adjusting the upper position and the lower position of the conveying movable plate, can still ensure the tension state of the belt after the replacement, and shortens the stop time.

Description

Belt conveying device

Technical Field

The invention relates to the technical field of belt transmission, in particular to a belt conveying device.

Background

The belt transmission is a material transmission mode which is common in production and life, and because the belt runs for a long time, the belt is damaged due to the friction between the belt and the material and the friction between the belt and the belt pulley, so that the damaged belt needs to be replaced at regular intervals. The change of present belt need dismantle conveying motor, delivery wheel or take-up pulley, and the dismouting process is loaded down with trivial details, changes inefficiency, causes conveyor down time longer, influences the normal clear of production, brings unnecessary economic loss.

Therefore, it is desirable to provide a belt conveying device to solve the above problems.

Disclosure of Invention

The invention aims to provide a belt conveying device, which can realize quick replacement of a belt, shorten the downtime and avoid the influence of overlong downtime on normal production.

In order to realize the purpose, the following technical scheme is provided:

a belt conveying device comprises a conveying fixed plate and a conveying movable plate arranged on the conveying fixed plate, wherein the conveying movable plate can move up and down relative to the conveying fixed plate;

the belt conveying mechanism comprises a belt, a driving wheel, a driven wheel and a tension wheel, wherein the driving wheel, the driven wheel and the tension wheel are used for winding the belt; the driving wheel is rotatably arranged on the conveying fixed plate; the driven wheel and the tension wheel are rotatably arranged on the conveying movable plate;

the tension pulley can move up and down along with the conveying movable plate, so that the height of the tension pulley relative to the driving wheel is changed, and the tension state of the belt is further changed.

Preferably, a pressing plate is arranged on the top of the conveying fixed plate and can extend to the position above the driven wheel of the conveying movable plate;

the pressure plate is connected with the conveying movable plate through a threaded fastener; the clamp plate is provided with a through hole, the top of the conveying movable plate is provided with a threaded hole, the threaded fastener penetrates through the through hole from top to bottom and is locked on the clamp plate, and the conveying movable plate can move up and down relative to the conveying fixed plate through screwing.

Preferably, the plurality of pressing plates are arranged, and each pressing plate comprises two end pressing plates which are respectively arranged at two ends of the conveying fixed plate along the first direction and a middle pressing plate which is arranged between the two end pressing plates; the threaded fastener is arranged on the middle pressing plate.

Preferably, the belt conveying device further comprises a limiting part, a limiting groove extending in the vertical direction is formed in the conveying fixed plate, the limiting part penetrates through the limiting groove and then is connected with the conveying movable plate, and the limiting part abuts against the top or bottom of the limiting groove to limit the conveying movable plate in a vertical movement mode.

Preferably, the limiting part comprises a head and a rod body which are vertically connected with each other, and the rod body of the limiting part extends into the limiting groove and is connected with the conveying movable plate; the head of the limiting part is exposed out of the outer side of the conveying fixed plate and is abutted against the conveying fixed plate.

Preferably, the heights of the driven wheel, the tension wheel, and the driving wheel are sequentially reduced.

Preferably, the tensioning wheel includes a first tensioning wheel and a second tensioning wheel, wherein the first tensioning wheel and the driving wheel are both located at one end of the belt conveying mechanism in a first direction, and the second tensioning wheel is located at the other end of the belt conveying mechanism in the first direction.

Preferably, the number of the first tensioning wheels is two along the first direction, and the two first tensioning wheels are symmetrically distributed relative to the driving wheel.

Preferably, the driven wheels are provided in plurality, and the driven wheels are uniformly distributed along a first direction; every two adjacent all set up a belt riding wheel between the follow driving wheel for support the belt.

Preferably, the belt conveying device further comprises a fixed plate, a jacking piece is arranged at the bottom of the fixed plate, and a driving end of the jacking piece is connected with the conveying fixed plate so as to drive the conveying fixed plate to move along the vertical direction;

the conveying fixed plate is connected with the fixed plate in a sliding mode through a sliding rail and sliding groove structure, so that the conveying top plate can move in the vertical direction in a guiding mode.

Compared with the prior art, the invention has the beneficial effects that:

the belt conveying device can realize the quick replacement of the belt only by adjusting the upper and lower positions of the conveying movable plate, can still ensure the tensioning state of the belt after the replacement, has simple structure and convenient operation, does not need to disassemble and assemble a conveying motor, a conveying wheel or a tensioning wheel, improves the replacement efficiency, shortens the shutdown time, and avoids the influence of long-time shutdown on normal production.

Drawings

FIG. 1 is a schematic diagram of a belt conveyor according to an embodiment of the present invention from a first perspective;

FIG. 2 is a front view of a belt conveyor in an embodiment of the invention;

FIG. 3 is a rear view of a belt conveyor in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a belt conveyor according to an embodiment of the present invention from a second perspective;

FIG. 5 is a cross-sectional view taken along plane A-A of FIG. 3;

FIG. 6 is an enlarged view at B of FIG. 1;

fig. 7 is an enlarged view at C in fig. 2.

Reference numerals:

10-conveying a fixed plate; 20-conveying a movable plate; 30-fixing the plate; 40-a belt transport mechanism; 50-pressing plate; 60-a stop;

11-a limiting groove; 12-T type groove; 13-a shading frame; 14-a sensor holder; 21-mounting holes; 31-a jacking member; 32-a connector; 33-a photoelectric switch; 34-a sliding track chute structure; 35-a limiting block; 41-driving wheels; 42-a driven wheel; 43-a first tensioning wheel; 44-a second tensioning wheel; 45-a belt; 46-a drive motor; 47-a first mounting frame; 48-a second mounting frame; 49-belt riding wheel;

51-a through hole; 52-end press plate; 53-intermediate platen; 61-a head; 62-a rod body;

121-a first trough body; 122-a second trough; 321-an abutment; 322-piston connection; 521-curved surface portion; 522-planar portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 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 figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, 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, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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 or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, the present embodiment is directed to a belt conveyor, including a fixed conveyor plate 10 and a movable conveyor plate 20 disposed on the fixed conveyor plate 10, wherein the movable conveyor plate 20 is capable of moving up and down with respect to the fixed conveyor plate 10; the conveying device further comprises a belt conveying mechanism 40, wherein the belt conveying mechanism 40 comprises a belt 45, a driving wheel 41, a driven wheel 42 and a tension wheel, the driving wheel 41 is used for winding the belt 45, and the driving wheel 41 is rotatably arranged on the conveying fixed plate 10; the driven wheel 42 and the tension wheel are rotatably arranged on the conveying movable plate 20; the tensioner can move up and down along with the conveying movable plate 20, so that the height of the tensioner relative to the driving wheel 41 is changed, and the tension state of the belt 45 is changed.

In the present embodiment, the heights of the driven wheel 42, the tension wheel, and the driving wheel 41 are sequentially lowered. Further, the tension pulleys include a first tension pulley 43 and a second tension pulley 44, wherein the first tension pulley 43 is disposed close to the driving wheel 41, and the second tension pulley 44 is disposed away from the driving wheel 41; preferably, the first tension pulley 43 and the driving pulley 41 are both located at one end of the belt conveying mechanism 40 in the first direction, and the second tension pulley 44 is located at the other end of the belt conveying mechanism 40 in the first direction; referring to fig. 2, when viewed clockwise, the belt 45 is wound from the driving pulley 41 upward through the upper portion of the first tension pulley 43, and then wound onto the driven pulley 42 through the lower portion of the second tension pulley 44, so as to be tensioned. Further preferably, two first tensioning wheels 43 are arranged along the first direction, and the two first tensioning wheels 43 are symmetrically distributed relative to the driving wheel 41, so that when the belt 45 is long, the whole tensioning effect can be ensured; when the first tensioning wheel 43 moves up and down along with the conveying movable plate 20, the belt 45 can be synchronously tensioned or loosened on two sides of the driving wheel 41, so that tensioning of the belt 45 is realized quickly, and replacement after loosening is facilitated. The first direction is the longitudinal direction of the fixed and movable conveying plates 10 and 20.

Further, with continued reference to fig. 1, 2 and 5, a pressing plate 50 is disposed on the top of the fixed conveying plate 10, and the pressing plate 50 can extend to the upper side of the driven wheel 42 of the movable conveying plate 20 to limit the belt 45 on the driven wheel 42, so as to prevent the belt 45 from separating from the driven wheel 42 and ensure the smooth conveying of the belt 45. Further, the pressing plate 50 is connected with the movable conveying plate 20 through a threaded fastener, referring to fig. 1 and 6, a through hole 51 is formed in the pressing plate 50, a threaded hole is formed in the top of the movable conveying plate 20, and the threaded fastener penetrates through the through hole 51 from top to bottom and then is locked on the pressing plate 50, so that the movable conveying plate 20, the pressing plate 50 and the fixed conveying plate 10 are relatively fixed; when the belt 45 needs to be replaced, the threaded fastener is loosened, the conveying movable plate 20 moves downwards relative to the conveying fixed plate 10, the first tensioning wheel 43 on the conveying movable plate 20 moves downwards relative to the driving wheel 41, the belt 45 is not tensioned any more, a gap is formed between the belt 45 and the first tensioning wheel, and meanwhile, the gap between the pressing plate 50 and the belt 45 is enlarged, so that a person can take out an old belt through the gap and put in a new belt; after a new belt is put in, the threaded fastener is screwed down, so that the conveying movable plate 20 moves upwards relative to the conveying fixed plate 10, the first tensioning wheel 43 and the second tensioning wheel 44 are matched to complete the re-tensioning of the belt 45, the belt 45 is attached to the driving wheel 41, meanwhile, the gap between the pressing plate 50 and the belt 45 is reduced, the limitation on the belt 45 is realized again, and the whole belt conveying mechanism 40 returns to normal operation. Alternatively, the threaded fastener may be a tie bolt, or other threaded fastening structure.

The belt conveying device can realize the tensioning and the releasing of the belt 45 only by adjusting the upper position and the lower position of the conveying movable plate 20, when the belt 45 is in a releasing state, the belt can be quickly replaced, and the position of the conveying movable plate 20 is adjusted after the replacement is finished, so that the tensioning wheel is continuously kept tensioned; whole belt conveyors simple structure, convenient operation, and need not to carry out the dismouting of conveying motor, delivery wheel or take-up pulley, has improved change efficiency, has shortened the down time, has avoided long-time shut down to influence normal production.

Alternatively, in this embodiment, referring to fig. 1 and 4, the driving wheel 41 is driven by a driving motor 46, a main body of the driving motor 46 is disposed on the conveying fixed plate 10, and an output end of the driving motor 46 is connected to the driving wheel 41 to ensure that the position of the driving wheel 41 is fixed relative to the conveying fixed plate 10. Further, under the tensioning state of the belt 45, the top surface of the conveying fixed plate 10 and the top surface of the conveying movable plate 20 should be kept flush, so that the belt 45 is conveniently limited by the pressing plate 50, and meanwhile, the pressing plate 50 and the conveying movable plate 20 are conveniently tensioned through a threaded fastener. Further, the height dimension of the movable conveying plate 20 is smaller than that of the fixed conveying plate 10 in this embodiment, so as to reduce the weight of the movable conveying plate 20 as much as possible and reduce the tension force required for movement thereon. Further, the driving motor 46 is arranged at the bottom of the conveying fixed plate 10 through a first mounting bracket 47, and the tensioning wheel is arranged at the bottom of the conveying movable plate 20 through a second mounting bracket 48; the driving module and the tensioning module are arranged as mutually independent modules and are mounted to the corresponding panel by mounting members, and once a problem occurs in a certain module, the driving module and the tensioning module can be disassembled, adjusted or replaced by the first mounting frame 47 and the second mounting frame 48.

With continued reference to fig. 1 and 2, in the present embodiment, the driven pulley 42 is provided in plural, and the plural driven pulleys 42 are uniformly distributed along the first direction to improve the stability of the belt 45 conveyance. Further optionally, a belt supporting roller 49 is disposed between each two adjacent driven rollers 42 for supporting the supporting belt 45, so as to substantially ensure the level of the belt 45 during the conveying process. Further, for the case that the belt 45 has a long transmission distance in the first direction, in order to ensure that the belt 45 does not separate from the driven wheel 42, a plurality of pressing plates 50 are correspondingly provided, referring to fig. 1, specifically including two end pressing plates 52 respectively provided at two ends of the conveying fixed plate 10 in the first direction and an intermediate pressing plate 53 provided between the two end pressing plates 52; preferably, threaded fasteners are not arranged on the two end pressing plates 52, but only on the middle pressing plate 53, so that the end pressing plates 52 can be ensured to have a certain limiting effect in the process of replacing the belt 45, and a new belt can be conveniently sleeved. Further, the intermediate pressing plate 53 includes a plurality of first pressing plates and a second pressing plate disposed between two adjacent first pressing plates, the length of the first pressing plate is longer than that of the second pressing plate, and a plurality of threaded fasteners are disposed on each first pressing plate at intervals; during specific implementation, according to the different cover circumstances of belt 45 along first direction, optionally carry out the unscrewing and straining of threaded fastener on different first clamp plates, make the regulation of carrying movable plate 20 more nimble, if be one with middle clamp plate 53, because its length overlength, restrict each other between a plurality of threaded fastener, and then lead to whole carrying movable plate 20's controllability relatively poor. Optionally, in this embodiment, three first pressing plates are provided, and two second pressing plates are provided between two adjacent first pressing plates; two threaded fasteners are arranged at intervals along the first direction for each first pressing plate, and the threaded fasteners are arranged as close as possible to the end of the first pressing plate along the first direction, so that the pulling effect on the conveying movable plate 20 is improved.

Optionally, referring to fig. 6, the bottom surface of the end pressing plate 52 includes a curved surface portion 521 and a flat surface portion 522, which are smoothly connected, wherein the flat surface portion 522 is parallel to the first direction, and the curved surface portion 521 is parallel to the belt 45 wound on the driven wheel 42 at the end portion, so as to achieve sufficient limit of the belt 45 and prevent the belt 45 from being disengaged at the driven wheel 42 at the end portion.

Further, referring to fig. 3, 4 and 5, the belt conveying device further includes a limiting member 60, a limiting groove 11 extending in the vertical direction is formed in the conveying fixed plate 10, the limiting member 60 penetrates through the limiting groove 11 and then is connected with the conveying movable plate 20, wherein the limiting member 60 has a space moving up and down in the limiting groove 11, so that the up and down movement of the conveying movable plate 20 relative to the conveying fixed plate 10 is realized, and the limiting member 60 can abut against the top or bottom of the limiting groove 11 to realize the limit of the up and down movement of the conveying movable plate 20. Alternatively, referring to fig. 5, the limiting member 60 is a T-shaped structure, and includes a head 61 and a rod 62 that are vertically connected to each other, the rod 62 of the limiting member 60 extends into the limiting groove 11 and is connected to the movable conveying plate 20, and the rod 62 of the limiting member 60 can abut against the top or bottom of the limiting groove 11 to limit the vertical displacement of the movable conveying plate 20; the head 61 of the limiting member 60 is exposed outside the fixed conveying plate 10 and abuts against the fixed conveying plate 10, so that the movable conveying plate 20 is limited along the direction perpendicular to the fixed conveying plate 10, and the movable conveying plate 20 is prevented from shaking along the direction perpendicular to the fixed conveying plate 10 when moving up and down. Preferably, the limiting groove 11 is a waist-shaped groove extending in the vertical direction. Optionally, the plurality of limiting grooves 11 and the plurality of limiting members 60 are disposed along the first direction, and correspond to each other one by one, so as to ensure that the movement of the movable conveying plate 20 is limited.

Further, carry on the movable plate 20 and set up the constant head tank on the lateral wall that is close to one side of carrying the fixed plate 10, the pole portion of locating part 60 can insert in the constant head tank, realize with carrying the accurate grafting of movable plate 20, conveniently fix a position locating part 60 and carry movable plate 20. Further optionally, the conveying movable plate 20 is provided with a mounting hole 21, the mounting hole 21 is communicated with the positioning groove, the fastener is connected with the first limiting member 60 after penetrating through the mounting hole 21, so that the limiting member 60 is fastened with the conveying movable plate 20, the fastener can be accommodated in the mounting hole 21 to be prevented from being exposed, and an attractive effect is achieved; optionally, the fastener is a fastening bolt.

Referring to fig. 2, 3 and 4, the belt conveyor provided in this embodiment further includes a fixing plate 30, the fixed conveying plate 10 is disposed on the fixing plate 30, and the fixing plate 30 is used to fix the whole belt conveyor to a corresponding station, so as to complete the transmission and processing of the product. In this embodiment, the fixing plate 30 includes two side surfaces, the conveying fixing plate 10 is disposed on one side surface of the fixing plate 30, and the other side surface of the fixing plate 30 is used for fixing the whole belt conveying device. In the concrete implementation, the length of the fixed conveying plate 10 and the movable conveying plate 20 in the first direction is the same, the length of the fixed conveying plate 30 and the fixed conveying plate 10 in the first direction is different, and the length of the fixed conveying plate 30 is smaller than the length of the fixed conveying plate 10.

Further, referring to fig. 2, 4 and 7, the bottom of the fixed plate 30 is provided with a jacking member 31, the driving end of the jacking member 31 is connected with the fixed conveying plate 10, and the jacking member 31 can drive the fixed conveying plate 10, the movable conveying plate 20 and the whole belt conveying mechanism 40 to move up and down so as to adjust the height of the conveying plane of the belt conveying device and meet the use requirements on corresponding stations. Further alternatively, referring to fig. 2, the fixed conveying plate 10 is slidably connected to the fixed plate 30 through a sliding rail and sliding chute structure 34, and both the sliding rail and the sliding chute extend in the height direction to achieve the guiding function of the fixed conveying plate 10 moving in the height direction. Optionally, the jacking members 31 are arranged in plurality at intervals along the first direction, and the slide rail and chute structures 34 are also arranged in plurality at intervals along the first direction, so as to meet the requirement of consistency of overall movement of the conveying fixed plate 10. Further, the fixed plate 30 is provided with a limiting block 35, and when the fixed conveying plate 10 moves downwards to abut against the limiting block 35, the fixed conveying plate 10 reaches a descending limit position. Further, referring to fig. 3 and 4, a dual-type photoelectric switch 33 is disposed on the second side of the fixing plate 30, a light shielding frame 13 is disposed on the fixed conveying plate 10, and the position information of the fixed conveying plate 10 is obtained by touching the photoelectric switch 33 through the light shielding frame 13.

Alternatively, the jack 31 may be a cylinder. Referring to fig. 7, the piston of the cylinder is provided with a connecting member 32, and the connecting member 32 includes an abutting portion 321 and a piston connecting portion 322; correspondingly, the bottom of the conveying fixed plate 10 is provided with a T-shaped groove 12, the T-shaped groove 12 comprises a first groove body 121 and a second groove body 122 which are vertically communicated with each other, and the abutting part 321 and the piston connecting part 322 of the connecting piece 32 can be respectively inserted into the first groove body 121 and the second groove body 122 of the T-shaped groove 12 along the direction vertical to the conveying fixed plate 10; when the piston drives the connecting piece 32 to jack up, the abutting part 321 can be abutted with the groove top of the first groove body 121 to complete the upward driving of the conveying fixed plate 10, and when the piston rod drives the connecting piece 32 to move down, the abutting part 321 can be abutted with the groove bottom of the first groove body 121 to realize the downward driving of the conveying fixed plate 10.

The belt conveyor provided by this embodiment can be used for conveying circuit boards, and in specific implementation, the whole belt conveyor is arranged on a corresponding station through the fixing plate 30, and meanwhile, a plurality of position sensors are arranged on the conveying fixed plate 10 at intervals along the first direction and used for detecting the moving position of the circuit board, and once the circuit board is detected to move to the corresponding position, corresponding equipment on the station can be controlled to complete the placement, processing or unloading of the circuit board. Further, referring to fig. 1 and 3, a position sensor is provided on the transport surface plate 10 by a sensor holder 14. Because the thickness of the circuit board is thin, in order to conveniently detect the position information of the circuit board, preferably, the gap between the two pressing plates 50 can be used as a position detection position, and the position sensor directly monitors the position of the circuit board through the gap between the pressing plates 50, so that the situation that the pressing plates 50 are grooved is avoided; during the concrete implementation, the setting of position detection position can combine together with the number and the length design of clamp plate 50, and optimal design when guaranteeing belt 45 anti-drop, can also satisfy the position monitoring demand.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. The belt conveying device is characterized by comprising a conveying fixed plate (10) and a conveying movable plate (20) arranged on the conveying fixed plate (10), wherein the conveying movable plate (20) can move up and down relative to the conveying fixed plate (10);

the belt conveying mechanism (40) comprises a belt (45), a driving wheel (41) for winding the belt (45), a driven wheel (42) and a tension wheel; wherein the driving wheel (41) is rotatably arranged on the conveying fixed plate (10); the driven wheel (42) and the tension wheel are rotationally arranged on the conveying movable plate (20);

the tension pulley can move up and down along with the conveying movable plate (20) so that the height of the tension pulley relative to the driving wheel (41) is changed, and the tension state of the belt (45) is further changed.

2. The belt conveyor device according to claim 1, characterized in that a pressing plate (50) is arranged on the top of the conveying fixed plate (10), and the pressing plate (50) can extend to the upper part of the driven wheel (42) of the conveying movable plate (20);

the pressure plate (50) is connected with the conveying movable plate (20) through a threaded fastener; set up through-hole (51) on clamp plate (50), the top of carrying movable plate (20) sets up the screw hole, threaded fastener passes from top to bottom through-hole (51) back lock attach to on clamp plate (50), through twisting threaded fastener can realize carry movable plate (20) for carry reciprocating of fixed plate (10).

3. The belt conveying device according to claim 2, wherein the pressing plates (50) are provided in plurality, and include two end pressing plates (52) respectively provided at both ends of the conveying fixed plate (10) in the first direction and an intermediate pressing plate (53) provided between the two end pressing plates (52); the threaded fastener is arranged on the intermediate pressure plate (53).

4. The belt conveyor according to claim 1, further comprising a limiting member (60), wherein the fixed conveyor plate (10) is provided with a limiting groove (11) extending in a vertical direction, the limiting member (60) penetrates through the limiting groove (11) and then is connected to the movable conveyor plate (20), and the limiting member (60) abuts against a top or bottom of the limiting groove (11) to limit the movable conveyor plate (20) in a vertical direction.

5. The belt conveyor according to claim 4, wherein the stopper (60) comprises a head (61) and a rod (62) which are perpendicularly connected to each other, and the rod (62) of the stopper (60) extends into the stopper groove (11) and is connected to the movable conveyor plate (20); the head (61) of the limiting piece (60) is exposed out of the conveying fixed plate (10) and is abutted against the conveying fixed plate (10).

6. The belt conveyor device according to claim 1, wherein the heights of the driven pulley (42), the tension pulley, and the driving pulley (41) are sequentially reduced.

7. The belt conveying apparatus according to claim 2, wherein the tension pulley includes a first tension pulley (43) and a second tension pulley (44), wherein the first tension pulley (43) and the driving pulley (41) are located at one end of the belt conveying mechanism (40) in a first direction, and the second tension pulley (44) is located at the other end of the belt conveying mechanism (40) in the first direction.

8. Belt conveyor according to claim 7, characterized in that the first tensioning wheel (43) is provided in two in the first direction, the two first tensioning wheels (43) being symmetrically distributed with respect to the drive wheel (41).

9. Belt conveyor according to claim 1, characterized in that said driven wheels (42) are provided in plurality, said driven wheels (42) being uniformly distributed along a first direction; a belt supporting wheel (49) is arranged between every two adjacent driven wheels (42) and is used for supporting the belt (45).

10. The belt conveying device according to claim 1, further comprising a fixed plate (30), wherein a jacking member (31) is arranged at the bottom of the fixed plate (30), and a driving end of the jacking member (31) is connected with the conveying fixed plate (10) to drive the conveying fixed plate (10) to move in the vertical direction;

the conveying fixed plate (10) is in sliding connection with the fixed plate (30) through a sliding rail sliding groove structure (34) so as to guide the conveying fixed plate (10) to move along the vertical direction.

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