CN215879413U

CN215879413U - Granary board forward and reverse combination bending device

Info

Publication number: CN215879413U
Application number: CN202122179590.7U
Authority: CN
Inventors: 杨勤成; 何昌甫; 邓政清; 张林弟
Original assignee: XIAMEN ZHENGLIMING METALLURGICAL MACHINERY CO Ltd
Current assignee: XIAMEN ZHENGLIMING METALLURGICAL MACHINERY CO Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-22
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a forward and reverse combined bending device for a granary plate, which comprises a rack, a downward folding mechanism, two upward folding mechanisms and a pressing mechanism, wherein the downward folding mechanism is arranged on the rack; the machine frame is provided with a table top for placing a grain bin plate; the pressing mechanisms are respectively arranged on the upper sides of the two ends of the table board, and the end parts of the grain bin plates are pressed by descending of the pressing mechanisms; the upper folding mechanisms are respectively arranged at the lower sides of the two ends of the table board, and are folded upwards to fold upwards the end part of the grain bin plate extending out of the table board; the downward folding mechanism is arranged on the upper side of the table board between the two upward folding mechanisms; the table board below the lower folding mechanism is provided with a cross section, and the end part of the grain bin plate extending out of the cross section is downwards folded through downwards folding by the lower folding mechanism; the utility model discloses an accessible is rolled over mechanism down and is rolled over mechanism on and respectively to grain bin board both ends forward reverse processing of buckling, and production efficiency is high, and the shaping precision is good, can be extensive, the batchization processing of buckling, effectively satisfies the section bar production demand of reality.

Description

Granary board forward and reverse combination bending device

Technical Field

The utility model relates to the technical field of section bar processing equipment, in particular to a forward and reverse combined bending device for a granary plate.

Background

The section steel is a bar-shaped steel material having a certain cross-sectional shape and size. According to different smelting qualities of steel, the section steel is divided into common section steel and high-quality section steel. The common section steel is divided into large-sized section steel, medium-sized section steel and small-sized section steel according to the current metal product catalog. The common section steel can be divided into I-shaped steel, channel steel, angle steel, round steel and the like according to the section shape. In practical production application, section steel is usually adopted as the granary plates, and in order to better splice the adjacent granary plates together, the two ends of each granary plate need to be bent forwards and backwards respectively, so that the head ends and the tail ends of the adjacent granary plates can be lapped together. At present, the processing mode of forward and reverse bending at two ends of the granary plate is manually carried out, the production efficiency is low, the forming precision is poor, and the actual production requirement of the sectional material is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a forward and reverse combined bending device for a grain bin plate, which can be used for respectively bending and processing the two ends of the grain bin plate in the forward and reverse directions through a downward bending mechanism and an upward bending mechanism, has high production efficiency and good forming precision, can be used for bending and processing in a large scale and in batches, and effectively meets the actual section production requirement.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a forward and reverse combined bending device for a granary plate comprises a rack, a downward folding mechanism, two upward folding mechanisms and a pressing mechanism; the machine frame is provided with a table top for placing a grain bin plate; the pressing mechanisms are respectively arranged on the upper sides of the two ends of the table board, and the end parts of the grain bin plates are pressed by descending of the pressing mechanisms; the upper folding mechanisms are respectively arranged at the lower sides of the two ends of the table board, and are folded upwards to fold upwards the end part of the grain bin plate extending out of the table board; the downward folding mechanism is arranged on the upper side of the table board between the two upward folding mechanisms; the table board below the downward folding mechanism is provided with a cross section, and the downward folding mechanism folds downwards to fold downwards the end part of the granary plate extending out of the cross section.

Further, the upward folding mechanism comprises an upward folding plate, at least one upward folding mechanical claw and an upward folding hydraulic cylinder; the upper folding plate is arranged on the lower side of the end part of the table board, and the inner side of the upper end of the upper folding plate is provided with a abdicating groove; the upward folding hydraulic cylinder is hinged with the frame; two ends of the upward-folding mechanical claw are respectively hinged with the upward-folding plate and a telescopic rod of the upward-folding hydraulic cylinder, and the upward-folding mechanical claw is driven by the upward-folding hydraulic cylinder to drive the upward-folding plate to be folded upwards.

Further, the upward-folding mechanical claw comprises two first upward-folding connecting rods and two second upward-folding connecting rods; the two first upward folding connecting rods are arranged up and down, and the upper ends of the two first upward folding connecting rods are hinged with the upper folding plate; the two second upward-folding connecting rods are arranged up and down, and two ends of the two second upward-folding connecting rods are hinged with the first upward-folding connecting rods; one end of the second upward-folding connecting rod below is hinged with the rack, the other end of the second upward-folding connecting rod is hinged with a telescopic rod of the upward-folding hydraulic cylinder, and the telescopic rod of the upward-folding hydraulic cylinder drives the upward-folding mechanical claw.

Furthermore, the pressing mechanism comprises a plurality of pressing hydraulic cylinders, a mounting seat and a pressing plate; the pressing hydraulic cylinder is fixedly connected with the rack, and a telescopic rod of the pressing hydraulic cylinder is fixedly connected with the mounting seat; the pressing plate is fixed below the mounting seat, two ends of the pressing plate are inclined planes which incline inwards, and the telescopic rod of the pressing hydraulic cylinder extends to drive the pressing plate to descend so as to press the end part of the granary plate.

Furthermore, two ends of the mounting seat are respectively provided with a guide post; the upper end and the lower end of the guide post are respectively fixedly connected with the rack, and the end part of the mounting seat is slidably sleeved on the guide post.

Further, the downward folding mechanism comprises a downward folding plate, at least one downward folding mechanical claw and a downward folding hydraulic cylinder; the lower folded plate is arranged on the upper side of the transverse position of the table board; the downward folding hydraulic cylinder is hinged with the frame; and two ends of the downward-folding mechanical claw are respectively hinged with the downward-folding plate and a telescopic rod of the downward-folding hydraulic cylinder, and the downward-folding mechanical claw is driven by the downward-folding hydraulic cylinder to drive the downward-folding plate to be downwards folded and downwards folded to the end part of the grain bin plate extending out of the cross section.

Further, the downward folding mechanical claw comprises two first downward folding connecting rods and two second downward folding connecting rods; the two first downward-folding connecting rods are arranged up and down, and the lower ends of the two first downward-folding connecting rods are hinged with the downward-folding plates; the two second downward-folding connecting rods are arranged up and down, and two ends of the two second downward-folding connecting rods are hinged with the first downward-folding connecting rods; and one end of the second downward-folding connecting rod above is hinged with the rack, the other end of the second downward-folding connecting rod is hinged with a telescopic rod of the downward-folding hydraulic cylinder, and the telescopic rod of the downward-folding hydraulic cylinder drives the downward-folding mechanical claw.

Further, the machine frames on the two sides of the downward folding mechanism are respectively provided with a conveying mechanism; the conveying mechanism comprises a pressing rotating shaft and a driving roller which are arranged oppositely up and down; a pressing wheel is fixedly sleeved on the pressing rotating shaft; two ends of the pressing rotating shaft are respectively and rotatably provided with an upper sliding block; an upper driving hydraulic cylinder is fixed on each of two sides of the rack, and a telescopic rod of the upper driving hydraulic cylinder is fixedly connected with the upper sliding block; two ends of the transmission roller are respectively and rotatably provided with a lower sliding block; a lower driving hydraulic cylinder is fixed on each of two sides of the rack, and a telescopic rod of the lower driving hydraulic cylinder is fixedly connected with the lower sliding block; and a conveying motor is fixed on one of the lower sliding blocks, an output shaft of the conveying motor is fixedly connected with the driving roller, and the pressing wheel and the driving roller convey the pressing grain bin plate.

Furthermore, a limiting mechanism is arranged on the rack; the limiting mechanism comprises two limiting wheels and an inflatable shaft; the lower end of the limiting wheel is sleeved on the inflatable shaft, the grain bin plate is clamped on the inner sides of the two limiting wheels, and the limiting wheels are detachably locked on the inflatable shaft through the diameter change of the inflatable shaft.

After the technical scheme is adopted, the utility model has the following beneficial effects:

1. according to the forward and reverse combined bending device for the granary plate, the forward and reverse bending processing can be respectively carried out on the two ends of the granary plate through the downward bending mechanism and the upward bending mechanism, the production efficiency is high, the forming precision is good, the bending processing can be carried out in a large-scale and batch manner, and the actual production requirement of sectional materials is effectively met.

2. According to the forward and reverse combined bending device for the granary plates, the installation heights of the pressing rotating shaft and the driving roller can be respectively adjusted through the upper driving hydraulic cylinder and the lower driving hydraulic cylinder, and then the driving roller is driven to rotate through the conveying motor, so that the granary plates with different thicknesses can be conveyed, and the forward and reverse combined bending device is high in flexibility and good in using effect.

3. According to the forward and reverse combined bending device for the granary plate, the distance between the two limiting wheels can be quickly adjusted according to the width of the granary plate, the granary plate can be effectively prevented from laterally deviating in the transmission process, and the forming precision of the granary plate can be improved.

Drawings

FIG. 1 is a schematic diagram of the molding of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic structural view of the folding mechanism and the pressing mechanism of the present invention;

FIG. 4 is a schematic structural diagram of the folding mechanism of the present invention;

FIG. 5 is a schematic view of the folding mechanism of the present invention mounted on the frame;

FIG. 6 is a schematic side view of the pressing mechanism of the present invention;

FIG. 7 is a schematic view of the feed end of the hold-down mechanism of the present invention;

FIG. 8 is a schematic structural view of a transfer mechanism of the present invention;

fig. 9 is a schematic structural view of the limiting mechanism of the present invention.

The reference numbers in the figures denote:

1. a frame; 10. a table top; 2. a downward folding mechanism; 20. folding the plate; 21. folding down the mechanical claw; 210. a first fold-down link; 211. a second fold-down link; 22. a downward folding hydraulic cylinder; 3. an upward folding mechanism; 30. folding the plate; 300. a yielding groove; 31. folding the mechanical claw upwards; 310. a first upward-folding connecting rod; 311. a second upward-folding connecting rod; 32. an upward folding hydraulic cylinder; 4. a pressing mechanism; 40. pressing the hydraulic cylinder; 41. a mounting seat; 42. a pressing plate; 43. a guide post; 5. a grain bin plate; 6. a transport mechanism; 60. pressing the rotating shaft; 61. a driving roller; 62. pressing the wheel; 63. an upper slide block; 64. an upper drive hydraulic cylinder; 65. a lower slide block; 66. a lower driving hydraulic cylinder; 67. a transfer motor; 7. a limiting mechanism; 70. a limiting wheel; 71. an inflatable shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 9, a forward and reverse combined bending device for a granary plate comprises a frame 1, a downward folding mechanism 2, two upward folding mechanisms 3 and a pressing mechanism 4; a table top 10 for placing a grain bin plate 5 is arranged on the rack 1; the pressing mechanisms 4 are respectively arranged at the upper sides of the two ends of the table board 10, and the end parts of the grain bin plates 5 are pressed by descending the pressing mechanisms 4; the upward folding mechanisms 3 are respectively arranged at the lower sides of the two ends of the table top 10, and are folded upwards through the upward folding mechanisms 3 to fold upwards the end parts of the granary plates 5 extending out of the table top 10; the downward folding mechanism 2 is arranged on the upper side of the table top 10 between the two upward folding mechanisms 3; the table-board 10 below the lower folding mechanism 2 is provided with a cross section, and the end part of the granary plate 5 extending out of the cross section is downwards folded through the lower folding mechanism 2.

As shown in fig. 1 to 5, the folding mechanism 3 includes a folding plate 30, at least one folding gripper 31, and a folding hydraulic cylinder 32; the upper folding plate 30 is arranged at the lower side of the end part of the table board 10, and the inner side of the upper end of the upper folding plate 30 is provided with an abdicating groove 300; the upward folding hydraulic cylinder 32 is hinged with the frame 1; the two ends of the upward folding gripper 31 are respectively hinged with the upper folding plate 30 and the telescopic rod of the upward folding hydraulic cylinder 32, and the upward folding gripper 31 is driven by the upward folding hydraulic cylinder 32 to drive the upper folding plate 30 to be folded upwards.

As shown in fig. 4 and 5, the upward-folding gripper 31 includes two first upward-folding links 310 and two second upward-folding links 311; the two first upward folding connecting rods 310 are arranged up and down, and the upper ends of the two first upward folding connecting rods are hinged with the upper folding plate 30; the two second upward-folding connecting rods 311 are arranged up and down, and two ends of the two second upward-folding connecting rods 311 are hinged with the first upward-folding connecting rod 310; one end of the second upward-folding connecting rod 311 below is hinged to the frame 1, and the other end of the second upward-folding connecting rod is hinged to the telescopic rod of the upward-folding hydraulic cylinder 32, and the telescopic rod of the upward-folding hydraulic cylinder 32 drives the upward-folding gripper 31.

As shown in fig. 2 and 3, the pressing mechanism 4 includes a plurality of pressing hydraulic cylinders 40, a mounting base 41, and a pressing plate 42; the pressing hydraulic cylinder 40 is fixedly connected with the rack 1, and a telescopic rod of the pressing hydraulic cylinder 40 is fixedly connected with the mounting seat 41; the pressing plate 42 is fixed below the mounting seat 41, and two ends of the pressing plate 42 are inclined planes inclined inwards, so that the pressing plate 42 does not obstruct inward bending of the end of the granary plate 5, and the telescopic rod of the pressing hydraulic cylinder 40 extends to drive the pressing plate 42 to descend to press the end of the granary plate 5.

As shown in fig. 2 and 3, two ends of the mounting seat 41 are respectively provided with a guide post 43; the upper end and the lower end of the guide post 43 are respectively fixedly connected with the frame 1, and the end part of the mounting seat 41 is slidably sleeved on the guide post 43.

As shown in fig. 2, 6 and 7, the downward folding mechanism 2 includes a downward folding plate 20, at least one downward folding gripper 21 and a downward folding hydraulic cylinder 22; the lower folded plate 20 is arranged at the upper side of the transverse part of the table top 10; the downward folding hydraulic cylinder 22 is hinged with the frame 1; the two ends of the downward folding mechanical claw 21 are respectively hinged with the lower folding plate 20 and the telescopic rod of the downward folding hydraulic cylinder 22, and the downward folding mechanical claw 21 is driven by the downward folding hydraulic cylinder 22 to drive the lower folding plate 20 to be downwards folded and downwards folded to the end part of the granary plate 5 extending out of the transverse position.

As shown in fig. 2, 6 and 7, the downward folding gripper 21 includes two first downward folding links 210 and two second downward folding links 211; the two first downward-folding connecting rods 210 are arranged up and down, and the lower ends of the two first downward-folding connecting rods are hinged with the downward-folding plate 20; the two second downward-folding connecting rods 211 are arranged up and down, and two ends of the two second downward-folding connecting rods are hinged with the first downward-folding connecting rod 210; one end of the second downward-folding connecting rod 211 above is hinged to the frame 1, and the other end of the second downward-folding connecting rod is hinged to a telescopic rod of the downward-folding hydraulic cylinder 22, and the downward-folding gripper 21 is driven by the telescopic rod of the downward-folding hydraulic cylinder 22.

As shown in fig. 2 and 8, the frame 1 at both sides of the downward folding mechanism 2 is respectively provided with a conveying mechanism 6; the conveying mechanism 6 comprises a pressing rotating shaft 60 and a driving roller 61 which are arranged oppositely up and down; a pressing wheel 62 is fixedly sleeved on the pressing rotating shaft 60; the two ends of the pressing rotating shaft 60 are respectively and rotatably provided with an upper sliding block 63; an upper driving hydraulic cylinder 64 is fixed on each of two sides of the frame 1, and a telescopic rod of the upper driving hydraulic cylinder 64 is fixedly connected with the upper sliding block 63; the two ends of the transmission roller 61 are respectively provided with a lower sliding block 65 in a rotating way; a lower driving hydraulic cylinder 66 is fixed on each of two sides of the frame 1, and an expansion link of the lower driving hydraulic cylinder 66 is fixedly connected with the lower slider 65; one of the lower sliding blocks 65 is fixed with a transmission motor 67, an output shaft of the transmission motor 67 is fixedly connected with the transmission roller 61, and the pressing wheel 62 and the transmission roller 61 are used for transmitting the grain pressing bin plate 5.

As shown in fig. 2 and 9, a limiting mechanism 7 is arranged on the frame 1; the limiting mechanism 7 comprises two limiting wheels 70 and an air expansion shaft 71; the lower ends of the limiting wheels 70 are sleeved on the inflatable shaft 71, the grain bin plate 5 is clamped on the inner sides of the two limiting wheels 70, and the limiting wheels 70 can be detachably locked on the inflatable shaft 71 through the diameter change of the inflatable shaft 71.

The forming process of the utility model is as follows:

as shown in fig. 1 and 2, firstly, a grain bin plate 5 is placed on a table top 10, the grain bin plate 5 is driven to move forwards by a conveying mechanism 6 until the front end of the grain bin plate 5 extends out of the table top 10 to form a small section, a front end pressing plate 42 is driven to descend to press the grain bin plate 5 tightly, and then a front end upper folding plate 30 is driven to turn upwards to finish primary bending; then, the front end pressing plate 42 is driven to ascend, the grain bin plate 5 is driven to move forwards through the conveying mechanism 6 until the front end of the grain bin plate 5 extends out of the table top 10 to form a small section, the front end pressing plate 42 is driven to descend to press the grain bin plate 5 tightly, and the front end upper folding plate 30 is driven to turn upwards to finish the second bending; then, the front end pressing plate 42 is driven to ascend, the grain bin plate 5 is driven to move through the conveying mechanism 6 until the rear end of the grain bin plate extends out of a small section towards the transverse position of the table top 10, and then the lower folding plate 20 is driven to overturn downwards to finish the third bending; and finally, driving the lower folded plate 20 to turn upwards, driving the grain bin plate 5 through the conveying mechanism 6 to move backwards until the rear end of the grain bin plate 5 extends out of the table top 10 to form a small section, driving the lower folded section of the grain bin plate 5 to fall into the abdicating groove 300 of the rear end upper folded plate 30, driving the rear end pressing plate 42 to descend to press the grain bin plate 5 tightly, driving the rear end upper folded plate 30 to turn upwards, and completing the fourth bending.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a granary board forward reverse combination bending device which characterized in that: comprises a frame (1), a lower folding mechanism (2), two upper folding mechanisms (3) and a pressing mechanism (4); a table top (10) for placing the granary plate (5) is arranged on the rack (1); the pressing mechanisms (4) are respectively arranged on the upper sides of the two ends of the table board (10), and the end parts of the grain bin plates (5) are pressed by descending of the pressing mechanisms (4); the upward folding mechanisms (3) are respectively arranged at the lower sides of the two ends of the table top (10), and the upward folding mechanisms (3) are used for turning over the end parts of the grain bin plates (5) extending out of the table top (10) upwards; the downward folding mechanism (2) is arranged on the upper side of the table board (10) between the two upward folding mechanisms (3); the table board (10) below the lower folding mechanism (2) is provided with a cross section, and the end part of the granary plate (5) extending out of the cross section is turned downwards by turning downwards the lower folding mechanism (2).

2. The forward and reverse combined bending device for the granary plate according to claim 1, wherein: the upward folding mechanism (3) comprises an upward folding plate (30), at least one upward folding mechanical claw (31) and an upward folding hydraulic cylinder (32); the upper folding plate (30) is arranged on the lower side of the end part of the table top (10), and the inner side of the upper end of the upper folding plate (30) is provided with a abdicating groove (300); the upward folding hydraulic cylinder (32) is hinged with the frame (1); the two ends of the upper folding mechanical claw (31) are respectively hinged with the upper folding plate (30) and the telescopic rod of the upper folding hydraulic cylinder (32), and the upper folding mechanical claw (31) is driven by the upper folding hydraulic cylinder (32) to drive the upper folding plate (30) to be folded upwards.

3. The forward and reverse combined bending device for the granary plate according to claim 2, wherein: the upward folding mechanical claw (31) comprises two first upward folding connecting rods (310) and two second upward folding connecting rods (311); the two first upward folding connecting rods (310) are arranged up and down, and the upper ends of the two first upward folding connecting rods are hinged with the upper folding plate (30); the two second upward-folding connecting rods (311) are arranged up and down, and two ends of the two second upward-folding connecting rods are hinged with the first upward-folding connecting rod (310); one end of the second upward-folding connecting rod (311) at the lower part is hinged with the rack (1), the other end of the second upward-folding connecting rod is hinged with a telescopic rod of the upward-folding hydraulic cylinder (32), and the upward-folding mechanical claw (31) is driven by the telescopic rod of the upward-folding hydraulic cylinder (32).

4. The forward and reverse combined bending device for the granary plate according to claim 1, wherein: the pressing mechanism (4) comprises a plurality of pressing hydraulic cylinders (40), a mounting seat (41) and a pressing plate (42); the pressing hydraulic cylinder (40) is fixedly connected with the rack (1), and a telescopic rod of the pressing hydraulic cylinder (40) is fixedly connected with the mounting seat (41); the pressing plate (42) is fixed below the mounting seat (41), two ends of the pressing plate (42) are inclined planes which incline inwards, and the telescopic rod of the pressing hydraulic cylinder (40) extends to drive the pressing plate (42) to descend so as to press the end part of the granary plate (5).

5. The forward and reverse combined bending device for the granary plate according to claim 4, wherein: guide posts (43) are respectively arranged at two ends of the mounting seat (41); the upper end and the lower end of the guide post (43) are respectively fixedly connected with the rack (1), and the end part of the mounting seat (41) is slidably sleeved on the guide post (43).

6. The forward and reverse combined bending device for the granary plate according to claim 1, wherein: the downward folding mechanism (2) comprises a downward folding plate (20), at least one downward folding mechanical claw (21) and a downward folding hydraulic cylinder (22); the lower folded plate (20) is arranged on the upper side of the transverse position of the table top (10); the downward folding hydraulic cylinder (22) is hinged with the frame (1); the two ends of the lower folding mechanical claw (21) are respectively hinged with the lower folding plate (20) and the telescopic rod of the lower folding hydraulic cylinder (22), and the lower folding mechanical claw (21) is driven by the lower folding hydraulic cylinder (22) to drive the lower folding plate (20) to be downwards folded and downwards folded to the end part of the grain bin plate (5) extending out of the transverse section.

7. The forward and reverse combined bending device for the granary plate according to claim 6, wherein: the downward folding mechanical claw (21) comprises two first downward folding connecting rods (210) and two second downward folding connecting rods (211); the two first downward folding connecting rods (210) are arranged up and down, and the lower ends of the two first downward folding connecting rods are hinged with the downward folding plate (20); the two second downward-folding connecting rods (211) are arranged up and down, and two ends of the two second downward-folding connecting rods are hinged with the first downward-folding connecting rod (210); and one end of the second downward-folding connecting rod (211) above is hinged with the rack (1), the other end of the second downward-folding connecting rod is hinged with a telescopic rod of the downward-folding hydraulic cylinder (22), and the downward-folding mechanical claw (21) is driven by the telescopic rod of the downward-folding hydraulic cylinder (22).

8. The forward and reverse combined bending device for the granary plate according to claim 1, wherein: the machine frame (1) at the two sides of the downward folding mechanism (2) is respectively provided with a conveying mechanism (6); the conveying mechanism (6) comprises a pressing rotating shaft (60) and a driving roller (61) which are arranged oppositely up and down; a pressing wheel (62) is fixedly sleeved on the pressing rotating shaft (60); two ends of the pressing rotating shaft (60) are respectively and rotatably provided with an upper sliding block (63); an upper driving hydraulic cylinder (64) is respectively fixed on two sides of the rack (1), and a telescopic rod of the upper driving hydraulic cylinder (64) is fixedly connected with an upper sliding block (63); two ends of the transmission roller (61) are respectively provided with a lower sliding block (65) in a rotating way; lower driving hydraulic cylinders (66) are respectively fixed on two sides of the rack (1), and telescopic rods of the lower driving hydraulic cylinders (66) are fixedly connected with the lower sliding blocks (65); one of the lower sliding blocks (65) is fixed with a transmission motor (67), an output shaft of the transmission motor (67) is fixedly connected with a transmission roller (61), and the pressing wheel (62) and the transmission roller (61) are used for transmitting the grain pressing bin plate (5).

9. The forward and reverse combined bending device for the granary plate according to claim 1, wherein: a limiting mechanism (7) is arranged on the rack (1); the limiting mechanism (7) comprises two limiting wheels (70) and an air expansion shaft (71); the lower ends of the limiting wheels (70) are sleeved on the inflatable shafts (71), the grain bin plate (5) is clamped on the inner sides of the two limiting wheels (70), and the limiting wheels (70) can be detachably locked on the inflatable shafts (71) through diameter change of the inflatable shafts (71).