CN214358555U

CN214358555U - Belt turning device

Info

Publication number: CN214358555U
Application number: CN202023202902.3U
Authority: CN
Inventors: 王晓伟; 何彦军; 赵峰; 辛广文; 王林; 郭自文; 杨自忠; 赵志明; 凤洋; 邱凯飞
Original assignee: National Energy Group Ningxia Coal Industry Co Ltd
Current assignee: National Energy Group Ningxia Coal Industry Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-08
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a belt turning device, which comprises a frame, an upper supporting roller frame, a lower supporting roller frame, an upper supporting roller and a lower supporting roller; the rack comprises an inner side leg and an outer side leg, and the upper carrier roller frame and the lower carrier roller frame are respectively connected with the inner side leg and the outer side leg; one end of the upper supporting roller frame is connected with the inner side leg in an up-and-down adjustable mode, and the other end of the upper supporting roller frame is connected with the outer side leg in an up-and-down adjustable mode; one end of the lower carrier roller frame is connected with the inner side leg in an up-and-down adjustable mode, and the other end of the lower carrier roller frame is connected with the outer side leg in an up-and-down adjustable mode. The utility model discloses a belt turning device, its upper idler frame and lower idler frame and medial branch leg and outside leg all can be adjusted from top to bottom, can adjust the inclination of upper idler frame and lower idler frame as required, and then adjust the inclination of upper idler and snub pulley, and then inclination when can adjusting the belt and turn to satisfy the needs of different operating modes.

Description

Belt turning device

Technical Field

The utility model relates to a transport machinery technical field especially relates to a belt turning device.

Background

The belt conveyor is a common transport machine in the mine industry and plays a key role in production and transportation of mines. The device has the advantages of simple structure, stable system, large transportation amount, simple operation and convenient maintenance, becomes a common electromechanical device for a plurality of industrial production flow lines and transportation of various mineral bulk materials, and plays an extremely important role in industrial production.

The conveying direction of a general belt conveyor is a linear direction, and the supporting rollers of the supporting roller group are arranged in a plane. The belt conveyor capable of turning is usually provided with a belt turning device, belt turning is realized, the defect of unchanged arrangement limited by terrain or obstacles can be overcome, the material is conveyed by adopting the plane turning belt conveyor under the condition of tortuous paths, the intermediate transferring link can be reduced, the loss of the material is reduced, the control link is simplified, the maintenance amount is reduced, and the investment of equipment cost is greatly reduced.

The inclined angle of the belt turning device of the belt conveyor in the prior art is fixed and is not adjustable. If meet different operational environment and need adjust the inclination of belt, then need bed up the frame and realize insecure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a conveniently realize belt turning device of belt turn.

The technical scheme of the utility model provides a belt turning device, which comprises a frame, an upper supporting roller frame arranged on the frame, a lower supporting roller frame arranged on the frame, an upper supporting roller arranged on the upper supporting roller frame and a lower supporting roller arranged on the lower supporting roller frame;

the rack comprises an inner side leg and an outer side leg, the upper supporting roller frame and the lower supporting roller frame are respectively connected with the inner side leg and the outer side leg, and the lower supporting roller frame is positioned below the upper supporting roller frame;

one end of the upper supporting roller frame is connected with the inner side leg in an up-and-down adjustable mode, and the other end of the upper supporting roller frame is connected with the outer side leg in an up-and-down adjustable mode;

one end of the lower carrier roller frame is connected with the inner side leg in an up-and-down adjustable mode, and the other end of the lower carrier roller frame is connected with the outer side leg in an up-and-down adjustable mode.

In one optional technical scheme, a first connecting plate is arranged at the end part, facing the inner side leg, of the upper supporting roller frame, and a second connecting plate is arranged at the end part, facing the outer side leg, of the upper supporting roller frame;

the top of the inner side leg is provided with a first support, the top of the outer side leg is provided with a second support, the first support is provided with a plurality of first mounting holes which are arranged at intervals up and down, and the second support is provided with a plurality of second mounting holes which are arranged at intervals up and down;

the first connecting plate is connected with the first bracket through a first bolt, and the first bolt selectively passes through one first mounting hole;

the second connecting plate is connected with the second bracket through a second bolt, and the second bolt can selectively pass through one second mounting hole.

In an optional technical solution, the second mounting hole at the lowest end of the second bracket is higher than the first mounting hole at the lowest end of the first bracket;

the second mounting hole at the uppermost end of the second support is higher than the first mounting hole at the uppermost end of the first support.

In one optional technical scheme, a third connecting plate is arranged at the end part, facing the inner side leg, of the lower carrier roller frame, and a fourth connecting plate is arranged at the end part, facing the outer side leg, of the lower carrier roller frame;

the lower part of the inner side leg is provided with a third bracket, the lower part of the outer side leg is provided with a fourth bracket, the third bracket is provided with a plurality of third mounting holes which are arranged at intervals up and down, and the fourth bracket is provided with a plurality of fourth mounting holes which are arranged at intervals up and down;

the third connecting plate is connected with the third bracket through a third bolt, and the third bolt can selectively pass through one third mounting hole;

the fourth connecting plate is connected with the fourth bracket through a fourth bolt, and the fourth bolt can selectively pass through one fourth mounting hole.

In an optional technical solution, the fourth mounting hole at the lowermost end of the fourth bracket is higher than the third mounting hole at the lowermost end of the third bracket;

the fourth mounting hole at the uppermost end of the fourth support is higher than the third mounting hole at the uppermost end of the third support.

In one optional technical scheme, the upper roller frame comprises an upper roller frame bottom plate, and an upper roller frame inner side plate and an upper roller frame outer side plate which are arranged on the inner side and the outer side of the upper roller frame bottom plate;

a first partition plate frame and a second partition plate frame are arranged on the bottom plate of the upper roller frame and between the inner side plate of the upper roller frame and the outer side plate of the upper roller frame;

the upper carrier roller comprises a first carrier roller, a second carrier roller and a third carrier roller which are sequentially arranged, the second carrier roller is positioned between the first carrier roller and the third carrier roller, the second carrier roller is horizontally arranged, the first carrier roller is obliquely arranged from the second carrier roller side to the inside upwards, and the third carrier roller is obliquely arranged from the second carrier roller side to the outside upwards;

the first carrier roller is pivotally connected between the upper carrier roller frame inner side plate and the first partition frame, the second carrier roller is pivotally connected between the first partition frame and the second partition frame, and the third carrier roller is pivotally connected between the second partition frame and the upper carrier roller outer side plate.

In one optional technical scheme, the lower carrier roller frame comprises a lower carrier roller frame bottom plate, and an inner lower carrier roller frame side plate and an outer lower carrier roller frame side plate which are arranged on the inner side and the outer side of the lower carrier roller frame bottom plate;

a third partition frame and a fourth partition frame are arranged on the lower carrier roller frame bottom plate and between the lower carrier roller frame inner side plate and the lower carrier roller frame outer side plate, the fifth carrier roller is located between the fourth carrier roller and the sixth carrier roller, the fifth carrier roller is horizontally arranged, the fourth carrier roller is obliquely arranged from the fifth carrier roller side to the inside upwards, and the sixth carrier roller is obliquely arranged from the fifth carrier roller side to the outside upwards;

the lower carrier roller comprises a fourth carrier roller, a fifth carrier roller and a sixth carrier roller which are sequentially arranged;

the fourth idler is pivotally connected between the lower idler frame inner side plate and the third partition frame, the fifth idler is pivotally connected between the third partition frame and the fourth partition frame, and the sixth idler is pivotally connected between the fourth partition frame and the lower idler outer side plate.

In one optional technical scheme, an upper blocking roller is arranged on the outer side of the upper supporting roller frame.

In one optional technical scheme, a lower baffle roller is arranged on the outer side of the lower supporting roller frame.

In one optional technical scheme, a reinforcing cross beam is connected between the inner side leg and the outer side leg.

By adopting the technical scheme, the method has the following beneficial effects:

the utility model provides a belt turning device, its upper idler frame and lower idler frame and medial branch leg and outside leg all can be adjusted from top to bottom, can adjust the inclination of upper idler frame and lower idler frame as required, and then adjust the inclination of upper idler and snub pulley, and then inclination when can adjusting the belt and turn to satisfy the needs of different operating modes.

Drawings

Fig. 1 is a schematic structural view of a belt turning device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a first bracket having a plurality of first mounting holes formed therein;

FIG. 3 is a schematic view of a second bracket having a plurality of second mounting holes;

fig. 4 is a schematic view of the upper idler being mounted on the upper idler cradle;

fig. 5 is a schematic view of the mounting of the upper dam roller on the outside of the upper idler roller cradle;

FIG. 6 is a schematic view of a third bracket having a plurality of third mounting holes formed therein;

FIG. 7 is a schematic view of a fourth bracket having a plurality of fourth mounting holes formed therein;

fig. 8 is a schematic view of an idler mounted on an idler cradle;

fig. 9 is a schematic view of the mounting of the bottom dam roller on the outside of the bottom idler cradle.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1, an embodiment of the present invention provides a belt turning device, which includes a frame 1, an upper roller frame 2 installed on the frame 1, a lower roller frame 3 installed on the frame 1, an upper roller 4 installed on the upper roller frame 2, and a lower roller 5 installed on the lower roller frame 3.

The frame 1 comprises an inner side leg 11 and an outer side leg 12, the upper carrier roller frame 2 and the lower carrier roller frame 3 are respectively connected with the inner side leg 11 and the outer side leg 12, and the lower carrier roller frame 3 is positioned below the upper carrier roller frame 2.

Wherein, one end of the upper supporting roller frame 2 is connected with the inner side supporting leg 11 in an up-and-down adjustable way, and the other end thereof is connected with the outer side supporting leg 12 in an up-and-down adjustable way.

One end of the lower roller frame 3 is connected with the inner side leg 11 in an up-and-down adjustable mode, and the other end of the lower roller frame is connected with the outer side leg 12 in an up-and-down adjustable mode.

The utility model provides a belt turning device mainly used belt conveyor's belt turns.

The belt turning device comprises a frame 1, an upper carrier roller frame 2, a lower carrier roller frame 3, an upper carrier roller 4 and a lower carrier roller 5.

The frame 1 comprises a medial leg 11 and a lateral leg 12. The utility model discloses the inboard outside the one side of turning orientation is called, the outside is called to opposite one side.

The upper idler frame 2 and the lower idler frame 3 are connected between the inner leg 11 and the outer leg 12, respectively. The upper roller frame 2 is positioned above the lower roller frame 3. The upper carrier roller 4 is rotatably mounted on the upper carrier roller frame 2, and the lower carrier roller 5 is rotatably mounted on the lower carrier roller frame 3. The belt is driven by the driving roller and is turned by the turning roller, and the whole belt is annularly arranged. The upper part of the endless belt is located on the upper idler 4 and the lower part of the endless belt is located on the lower idler 5.

In order to realize carrying out the angle to belt turn inclination, adopt following connected mode:

one end of the upper supporting roller frame 2 is connected with the inner side supporting leg 11 in an up-and-down adjustable mode, and the other end of the upper supporting roller frame is connected with the outer side supporting leg 12 in an up-and-down adjustable mode.

If the inner side end of the upper carrier roller frame 2 is adjusted downwards on the inner side supporting leg 11 and the outer side end of the upper carrier roller frame 2 is adjusted upwards on the outer side supporting leg 12, the inclination angle of the upper carrier roller frame 2 is increased, and the upper carrier roller 4 drives the belt to increase the inclination angle when the belt turns. Otherwise, the inclination angle of the upper carrier roller frame 2 is reduced, and the upper carrier roller 4 drives the belt to reduce the inclination angle during turning.

The upper supporting roller frame 2 can be connected with the inner side supporting leg 11 and the outer side supporting leg 12 through the adjusting mechanism respectively, as long as the inner end and the outer end of the upper supporting roller frame 2 can be adjusted up and down relative to the inner side supporting leg 11 and the outer side supporting leg 12 respectively.

If the inner side end of the lower carrier roller frame 3 is adjusted downwards on the inner side leg 11 and the outer side end of the lower carrier roller frame 3 is adjusted upwards on the outer side leg 12, the inclination angle of the lower carrier roller frame 3 is increased, and the lower carrier roller 5 drives the belt to increase the inclination angle when the belt turns. Otherwise, the inclination angle of the lower carrier roller frame 3 is reduced, and the lower carrier roller 5 drives the belt to reduce the inclination angle during turning.

The lower roller frame 3 can be connected with the inner side leg 11 and the outer side leg 12 through the adjusting mechanism, as long as the inner end and the outer end of the lower roller frame 3 can be adjusted up and down relative to the inner side leg 11 and the outer side leg 12.

Therefore, the utility model provides a belt turning device, its upper idler frame 2 and lower idler frame 3 and inboard leg 11 and outside leg 12 all can be adjusted from top to bottom, can adjust the inclination of upper idler frame 2 and lower idler frame 3 as required, and then adjusts the inclination of upper idler 4 and lower idler 5, and then inclination when can adjusting the belt and turn to satisfy different operating modes' needs.

In one embodiment, as shown in fig. 1-5, a first connecting plate 24 is provided on the end of the upper idler frame 2 facing the inboard leg 11, and a second connecting plate 25 is provided on the end of the upper idler frame 2 facing the outboard leg 12.

The top of the medial leg 11 is provided with a first bracket 14 and the top of the lateral leg 12 is provided with a second bracket 15. The first bracket 14 is provided with a plurality of first mounting holes 141 spaced up and down, and the second bracket 15 is provided with a plurality of second mounting holes 151 spaced up and down.

The first connecting plate 24 is connected to the first bracket 14 by a first bolt selectively passing through a first mounting hole 141.

The second connecting plate 25 is connected to the second bracket 15 by a second bolt selectively passing through one of the second mounting holes 151.

As required, the first connection plate 24 may be connected to different first mounting holes 141 by first bolts, and the second connection plate 25 may be connected to different second mounting holes 151 by second bolts, so as to adjust the inclination angle of the upper backup roller frame 2.

In one embodiment, as shown in fig. 1-3, the second mounting hole 151 at the lowermost end of the second bracket 15 is higher than the first mounting hole 141 at the lowermost end of the first bracket 14.

The uppermost second mounting hole 151 of the second bracket 15 is higher than the uppermost first mounting hole 141 of the first bracket 14.

With this arrangement, even if the first bolt is coupled to the first mounting hole 141 at the lowermost end and the second bolt is coupled to the second mounting hole 151 at the lowermost end, the upper idler frame 2 is inclined at the outer high inner bottom, and the belt can be turned. Similarly, even if the first bolt is coupled to the uppermost first mounting hole 141 and the second bolt is coupled to the uppermost second mounting hole 151, the upper idler frame 2 is inclined at the outer high inner bottom, and the belt can be turned.

In one embodiment, as shown in fig. 1 and 6-9, the end of the lower idler frame 3 facing the inboard leg 11 is provided with a third connecting plate 34, and the end of the lower idler frame 3 facing the outboard leg 12 is provided with a fourth connecting plate 35.

The lower part of the medial leg 11 is provided with a third bracket 16, and the lower part of the lateral leg 12 is provided with a fourth bracket 17. The third bracket 16 is provided with a plurality of third mounting holes 161 arranged at intervals up and down, and the fourth bracket 17 is provided with a plurality of fourth mounting holes 171 arranged at intervals up and down.

The third connecting plate 34 is connected to the third bracket 16 by a third bolt selectively passing through a third mounting hole 161.

The fourth connecting plate 35 is connected to the fourth bracket 17 by a fourth bolt selectively passing through a fourth mounting hole 171.

As required, the third connecting plate 34 may be connected to the different third mounting holes 161 by third bolts, and the fourth connecting plate 35 may be connected to the different fourth mounting holes 171 by fourth bolts, so as to adjust the inclination angle of the lower idler frame 3.

In one embodiment, as shown in fig. 1 and 6-7, the fourth mounting hole 171 at the lowermost end of the fourth bracket 17 is higher than the third mounting hole 161 at the lowermost end of the third bracket 16.

The fourth mounting hole 171 of the uppermost end of the fourth bracket 17 is higher than the third mounting hole 161 of the uppermost end of the third bracket 16.

With this arrangement, even if the third bolt is screwed into the third mounting hole 161 at the lowermost end and the fourth bolt is screwed into the fourth mounting hole 171 at the lowermost end, the lower idler frame 3 is inclined at the outer high inner bottom, and the belt can be turned. Similarly, even if the third bolt is fastened to the third mounting hole 161 at the uppermost end and the fourth bolt is fastened to the fourth mounting hole 171 at the uppermost end, the lower idler frame 3 is inclined at the outer high inner bottom, and the belt can be turned.

In one embodiment, as shown in fig. 1 and fig. 4-5, the upper roller frame 2 comprises an upper roller frame bottom plate 21, and an upper roller frame inner side plate 22 and an upper roller frame outer side plate 23 which are arranged on the inner side and the outer side of the upper roller frame bottom plate 21.

A first partition rack 26 and a second partition rack 27 are arranged on the upper roller frame bottom plate 21 and between the upper roller frame inner side plate 22 and the upper roller frame outer side plate 23.

The upper idler 4 includes a first idler 41, a second idler 42, and a third idler 43, which are arranged in this order. The second idlers 42 are located between the first idlers 41 and the third idlers 43, the second idlers 42 are arranged horizontally, the first idlers 41 are arranged obliquely inward and upward from the second idlers 42 side, and the third idlers 43 are arranged obliquely outward and upward from the second idlers 42 side.

The first idler 41 is pivotally connected between the upper idler frame inner side plate 22 and the first partition frame 26, the second idler 42 is pivotally connected between the first partition frame 26 and the second partition frame 27, and the third idler 43 is pivotally connected between the second partition frame 27 and the upper idler outer side plate 23.

The bottom plate 21 of the upper roller frame is U-shaped, and the two sides of the bottom plate are higher than the middle part and lower than the middle part. The upper roller frame inner side plate 22 and the upper roller frame outer side plate 23 are respectively connected with the inner end and the outer end of the upper roller frame bottom plate 21. First and

second spacer brackets

26 and 27 are provided on the upper roller frame base plate 21 between the upper roller frame inner side plate 22 and the upper roller frame outer side plate 23.

The upper idler 4 is composed of a first idler 41, a second idler 42 and a third idler 43 which are sequentially arranged, is approximately arranged in a U shape, and is beneficial to supporting a belt. Specifically, the second idlers 42 are located between the first idlers 41 and the third idlers 43, the second idlers 42 are arranged horizontally, the first idlers 41 are arranged obliquely inward and upward from the second idlers 42 side, and the third idlers 43 are arranged obliquely outward and upward from the second idlers 42 side.

When the idler roller assembly is installed, the rotating shafts at the two ends of the first idler roller 41 are respectively and pivotally connected with the upper idler roller frame inner side plate 22 and the first partition frame 26, and the first idler roller 41 can rotate between the upper idler roller frame inner side plate 22 and the first partition frame 26. The rotating shafts at two ends of the second idler roller 42 are respectively and pivotally connected with the first partition frame 26 and the second partition frame 27, and the second idler roller 42 can rotate between the first partition frame 26 and the second partition frame 27. The rotating shafts at two ends of the third supporting roller 43 are respectively and pivotally connected with the second partition frame 27 and the upper supporting roller outer side plate 23, and the third supporting roller 43 can rotate between the second partition frame 27 and the upper supporting roller outer side plate 23.

The pivotable connection in the present invention refers to a connection mode in which two components can rotate relatively, for example, the connection mode is through a rotating shaft, a pivoting shaft, a bearing, etc.

In one embodiment, as shown in fig. 1 and 8-9, the lower idler frame 3 includes a lower idler frame bottom plate 31, and lower idler frame inner side plates 32 and lower idler frame outer side plates 33 disposed on inner and outer sides of the lower idler frame bottom plate 31.

A third partition bracket 36 and a fourth partition bracket 37 are arranged on the lower carrier roller frame bottom plate 31 between the lower carrier roller frame inner side plate 32 and the lower carrier roller frame outer side plate 33.

The lower idler 5 includes a fourth idler 51, a fifth idler 52, and a sixth idler 53, which are arranged in this order. The fifth idlers 52 are located between the fourth idlers 51 and the sixth idlers 53, the fifth idlers 52 are horizontally arranged, the fourth idlers 51 are obliquely inwardly and upwardly arranged from the fifth idlers 52, and the sixth idlers 53 are obliquely outwardly and upwardly arranged from the fifth idlers 52.

The fourth idler 51 is pivotally connected between the lower idler frame inner side plate 32 and the third partition frame 36, the fifth idler 52 is pivotally connected between the third partition frame 36 and the fourth partition frame 37, and the sixth idler 53 is pivotally connected between the fourth partition frame 37 and the lower idler outer side plate 33.

The bottom plate 31 of the lower roller frame is U-shaped, and the two sides of the bottom plate are higher than the middle part of the bottom plate. The lower carrier roller frame inner side plate 32 and the lower carrier roller frame outer side plate 33 are respectively connected to the inner end and the outer end of the lower carrier roller frame bottom plate 31. A third partition frame 36 and a fourth partition frame 37 are provided on the lower idler frame base plate 31 between the lower idler frame inner side plate 32 and the lower idler frame outer side plate 33.

The lower carrier roller 5 is composed of a fourth carrier roller 51, a fifth carrier roller 52 and a sixth carrier roller 53 which are sequentially arranged, is approximately arranged in a U shape, and is beneficial to supporting a belt. Specifically, the fifth idlers 52 are located between the fourth idlers 51 and the sixth idlers 53, the fifth idlers 52 are horizontally arranged, the fourth idlers 51 are arranged obliquely inward and upward from the fifth idlers 52, and the sixth idlers 53 are arranged obliquely outward and upward from the fifth idlers 52.

When the idler roller frame is installed, the rotating shafts at two ends of the fourth idler roller 51 are respectively and pivotally connected with the lower idler roller frame inner side plate 32 and the third partition frame 36, and the fourth idler roller 51 can rotate between the lower idler roller frame inner side plate 32 and the third partition frame 36. The rotating shafts at two ends of the fifth supporting roller 52 are respectively and pivotally connected with the third partition bracket 36 and the fourth partition bracket 37, and the fifth supporting roller 52 can rotate between the third partition bracket 36 and the fourth partition bracket 37. The rotating shafts at two ends of the sixth supporting roller 53 are respectively and pivotally connected with the fourth partition frame 37 and the lower supporting roller outer side plate 33, and the sixth supporting roller 53 can rotate between the fourth partition frame 37 and the lower supporting roller outer side plate 33.

In one embodiment, as shown in fig. 1 and 4-5, the outside of the upper idler frame 2 is provided with an upper stop roller 6. A first mounting plate 28 extends outwards on the upper roller frame outer side plate 23, and a rotating shaft 61 of the upper baffle roller 6 is rotatably mounted on the first mounting plate 28. When the belt is in a turn, the eccentric force is too large, and the belt can be stopped by the upper baffle roller 6 to prevent the belt on the upper carrier roller 4 from sliding outwards.

In one embodiment, as shown in fig. 1 and 8-9, the outside of the lower idler frame 3 is provided with a lower dam roller 7. A second mounting plate 38 extends outward from the lower idler frame outer plate 33, and the rotating shaft 71 of the lower baffle roller 7 is rotatably mounted on the second mounting plate 38. When the belt is in a turn, the eccentric force is too large, and the belt can be stopped by the lower baffle roller 7 to prevent the belt on the lower carrier roller 5 from sliding outwards.

In one embodiment, as shown in fig. 1, a reinforcing cross member 13 is connected between the inner leg 11 and the outer leg 12 to improve the connection stability between the inner leg 11 and the outer leg 12.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. A belt turning device is characterized by comprising a rack, an upper carrier roller frame arranged on the rack, a lower carrier roller frame arranged on the rack, an upper carrier roller arranged on the upper carrier roller frame and a lower carrier roller arranged on the lower carrier roller frame;

2. The belt turning device as claimed in claim 1, wherein a first connecting plate is provided on an end of the upper idler frame facing the inside leg, and a second connecting plate is provided on an end of the upper idler frame facing the outside leg;

3. The belt turning device of claim 2, wherein the second mounting hole of the lowermost end of the first bracket is higher than the first mounting hole of the lowermost end of the second bracket;

the second mounting hole at the uppermost end of the first support is higher than the first mounting hole at the uppermost end of the second support.

4. The belt turning device of claim 1, wherein a third connecting plate is provided on an end of the lower idler frame facing the inboard leg, and a fourth connecting plate is provided on an end of the lower idler frame facing the outboard leg;

5. The belt turning device of claim 4, wherein the fourth mounting hole of the lowermost end of the fourth bracket is higher than the third mounting hole of the lowermost end of the third bracket;

6. The belt turning device according to claim 1, wherein the upper idler frame comprises an upper idler frame bottom plate, and an upper idler frame inner side plate and an upper idler frame outer side plate which are arranged on the inner side and the outer side of the upper idler frame bottom plate; a first partition plate frame and a second partition plate frame are arranged on the bottom plate of the upper roller frame and between the inner side plate of the upper roller frame and the outer side plate of the upper roller frame;

7. The belt turning device according to claim 1, wherein the lower idler frame includes a lower idler frame bottom plate, and a lower idler frame inner side plate and a lower idler frame outer side plate provided on both inner and outer sides of the lower idler frame bottom plate;

a third partition plate frame and a fourth partition plate frame are arranged on the lower carrier roller frame bottom plate and between the lower carrier roller frame inner side plate and the lower carrier roller frame outer side plate;

the lower carrier roller comprises a fourth carrier roller, a fifth carrier roller and a sixth carrier roller which are sequentially arranged, the fifth carrier roller is positioned between the fourth carrier roller and the sixth carrier roller, the fifth carrier roller is horizontally arranged, the fourth carrier roller is obliquely arranged from the fifth carrier roller side to the inside upwards, and the sixth carrier roller is obliquely arranged from the fifth carrier roller side to the outside upwards;

8. The belt turning device according to any one of claims 1 to 7, wherein an upper resist roller is provided on an outer side of the upper backup roller frame.

9. The belt turning device according to any one of claims 1 to 7, wherein a lower resist roller is provided on an outer side of the lower idler frame.

10. The belt turning device as claimed in any one of claims 1 to 7, wherein a reinforcing cross member is connected between the inner leg and the outer leg.