Anti-blocking scraper conveyor

Abstract

The utility model provides an anti-blocking scraper conveyor, a scraper groove is arranged in the anti-blocking scraper conveyor, the anti-blocking scraper conveyor comprises a scraper group, and the scraper group can move circularly along the extension direction of the scraper groove so as to push coal flow flowing through the scraper groove; the scraper set is provided with a loosening structure and a cleaning structure, the loosening structure is located in front of the cleaning structure in the moving direction of the scraper set, the loosening structure is provided with a plurality of loosening ends distributed at intervals so as to loosen coal slime accumulated in the scraper groove in the moving process, and the cleaning structure is used for pushing the loosened coal slime to move and output the loosened coal slime out of the scraper groove. When the scraper machine runs, continuous loosening of accumulated coal slime in the scraper groove can be achieved through the loosening structure, the cleaning structure timely cleans loose blocking objects to the scraper groove after the loosening structure, and timely loosening and cleaning of the blocking objects adhering to the scraper groove are achieved through the scraper set. And the coal slime is ensured not to be accumulated in the scraper groove.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-blocking scraper conveyors, and particularly to an anti-blocking scraper conveyor. Background Art

[0002] During the tunneling process of coal mine full-face roadheaders and roadheader-anchoring machines, the cut coal or mud gangue needs to be transported out to the gateway conveyor system through an anti-blocking scraper conveyor (primary conveyor). During the transportation process, due to reasons such as the tightness of the scraper chain and the structure of the scraper, it is easy for the coal or mud gangue to tightly adhere to the scraper trough. After long-term operation, the scraper conveyor is prone to slow running speed and scraping jams. In severe cases, the scraper conveyor may be blocked, seriously affecting the tunneling efficiency.

[0003] Regarding the problem of scraping jams in the primary conveyor during the tunneling process of current full-face roadheaders and roadheader-anchoring machines:

[0004] When the blockage is relatively slight, generally, personnel are arranged to hold high-pressure water pipes to wash the accumulated coal and mud gangue in the scraper trough, soften the coal and mud gangue stuck in the scraper trough, and pull it out. However, there are problems and risks that a large amount of water will mix into the coal flow, thereby affecting the coal quality, and high-pressure water may injure people.

[0005] When the blockage is relatively severe, it is necessary to cut off the power supply and lock out the full-face roadheader and roadheader-anchoring machines. Personnel are arranged to enter the scraper trough and use tools to clean the blocked coal and mud gangue. After that, the equipment is started to pull out the blockage and resume production. However, there are problems such as narrow working space and high labor intensity, and there is also a risk of tool injury. Summary of the Utility Model

[0006] The utility model provides an anti-blocking scraper conveyor to solve the problem of easy blockage of the scraper trough in the prior art.

[0007] To solve the above problems, the utility model provides an anti-blocking scraper conveyor. The anti-blocking scraper conveyor has a scraper trough inside. The anti-blocking scraper conveyor includes a scraper group, and the scraper group is arranged to move cyclically along the extension direction of the scraper trough to push the coal flow flowing through the scraper trough.

[0008] The scraper group has a loosening structure and a cleaning structure. In the moving direction of the scraper group, the loosening structure is located in front of the cleaning structure. The loosening structure has a plurality of loosening ends distributed at intervals to loosen the coal flow in the scraper trough during the movement. The cleaning structure is used to push the loosened coal flow to move and output from the scraper trough.

[0009] Furthermore, there are multiple scraper groups, and the multiple scraper groups are arranged at intervals along the length direction of the scraper trough.

[0010] Furthermore, the multiple scraping ends of any two adjacent scraper groups are alternately arranged in the width direction of the scraper trough.

[0011] Further, the loose structure includes a plurality of loose columns spaced along the width direction of the scraper groove, and one end of any loose column facing the scraper groove forms a loose end.

[0012] Further, the loose column is a cylindrical column.

[0013] Further, the height of the loose column is 10 mm - 15 mm, and the distance between any two adjacent loose columns is 80 mm - 100 mm.

[0014] Further, the cleaning structure includes a cleaning strip extending along the width direction of the scraper groove. On the moving direction of the scraper group, the front side surface of the cleaning strip is inclined, and the width of the cleaning strip gradually decreases in the direction towards the bottom wall of the scraper groove.

[0015] Further, the cross-sectional shape of the cleaning strip is a right triangle, and the height of the front inclined surface of the cleaning strip is 10 mm - 15 mm.

[0016] Further, the scraper group includes a cleaning scraper and a loose scraper spaced along the extending direction of the scraper groove. The loose structure is arranged on the loose scraper, and the cleaning structure is arranged on the cleaning scraper.

[0017] Further, the cross-section of the cleaning scraper and / or the loose scraper is an I-shaped structure.

[0018] Applying the technical solution of the present utility model, a non-clogging scraper conveyor is provided. The non-clogging scraper conveyor has a scraper groove inside, and the non-clogging scraper conveyor includes a scraper group. The scraper group is arranged to be circularly movable along the extending direction of the scraper groove to push the coal flow flowing through the scraper groove; the scraper group has a loose structure and a cleaning structure. On the moving direction of the scraper group, the loose structure is located in front of the cleaning structure. The loose structure has a plurality of spaced loose ends to loosen the coal flow in the scraper groove during the movement, and the cleaning structure is used to push the loosened coal flow to move and output from the scraper groove.

[0019] Adopting this solution, when the scraper conveyor is running, through the loose structure, continuous loosening of the coal flow in the scraper groove can be achieved. The cleaning structure timely clears the loosened blockages out of the scraper groove after the loose structure. Through the scraper group, timely loosening and cleaning of the blockages adhered to the scraper groove are realized, ensuring that the blockages do not accumulate in the scraper groove.

[0020] By setting it in this way, it is possible to avoid the situation in the prior art where coal or muddy gangue is easily and tightly adhered to the scraper chute due to reasons such as the tightness of the scraper chain and the structure of the scraper, which may further lead to problems such as slow running speed and scraping jams of the scraper conveyor, affecting production efficiency. At the same time, it can avoid the problems such as easy impact on the coal quality of the coal flow, high cleaning difficulty, and high risk when the first conveyor of a full-section tunneling machine and a roadheader-anchoring machine experiences scraping jams during tunneling and needs to be cleaned by means of a high-pressure water gun or manual entry into the scraper chute. This is beneficial to improving the cleaning effect and efficiency of the scraper chute on the basis of ensuring coal quality, reducing the cleaning labor intensity of operators and the cleaning work, ensuring the smooth operation of the scraper conveyor, and improving the safety production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0022] Figure 1 It shows a partial structural schematic diagram of the anti-jamming scraper conveyor provided by the embodiment of the present utility model;

[0023] Figure 2 It shows Figure 1 a partial structural schematic diagram of the scraper chute and the scraper group in

[0024] Figure 3 It shows Figure 2 a structural schematic diagram of the loosening scraper and the loosening structure in

[0025] Figure 4 It shows Figure 2 a structural schematic diagram of the cleaning scraper and the cleaning structure in

[0026] Among them, the above-mentioned drawings include the following reference numerals:

[0027] 101, scraper chute;

[0028] 11, scraper group;

[0029] 111, loosening structure;

[0030] 1111, loosening column;

[0031] 112, cleaning structure;

[0032] 1121, cleaning strip;

[0033] 113, cleaning scraper;

[0034] 114, loosening scraper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0036] As Figures 1 to 4 shown, an embodiment of the present utility model provides an anti-clogging scraper conveyor. The anti-clogging scraper conveyor has a scraper trough 101 inside. The anti-clogging scraper conveyor includes a scraper group 11. The scraper group 11 is arranged to move cyclically along the extending direction of the scraper trough 101 to push the coal flow flowing through the scraper trough 101. The scraper group 11 includes a loosening structure 111 and a cleaning structure 112. In the moving direction of the scraper group 11, the loosening structure 111 is located in front of the cleaning structure 112. The loosening structure 111 has a plurality of spaced-apart loosening ends to loosen the coal flow in the scraper trough 101 during movement. The cleaning structure 112 is used to push the loosened coal flow to move and output from the scraper trough 101.

[0037] In this embodiment, when the scraper conveyor is running, the continuous loosening of the coal flow in the scraper trough 101 can be achieved through the loosening structure 111. The cleaning structure 112 timely clears the loosened clogging materials out of the scraper trough 101 after the loosening structure 111. Through the scraper group 11, the timely loosening and cleaning of the clogging materials adhered to the scraper trough 101 are realized, ensuring that the clogging materials do not accumulate in the scraper trough 101.

[0038] With such a setting, it is avoided that in the prior art, coal or mud gangue is easily and tightly adhered to the scraper trough 101 due to reasons such as the tightness of the scraper chain and the structure of the scraper, which may lead to situations that affect production efficiency, such as the slow running speed and scraping and jamming of the scraper conveyor. At the same time, it is also avoided that when the first conveyor of a full-section tunneling machine and a roadheader-anchoring machine is scraped and jammed during tunneling in the prior art, and high-pressure water guns or manual entry into the scraper trough 101 and other methods are used for cleaning, problems such as easily affecting the coal quality of the coal flow, high cleaning difficulty, and high risk may occur.

[0039] As Figure 1The figure shows a partial structural schematic diagram of the anti-blocking scraper conveyor provided by the present utility model (which can also be called a partial structural schematic diagram of the first conveyor of the fully mechanized heading machine in use underground). It further includes a driving motor (hydraulic drive), a scraper chain, a driving wheel, and a frame body. The driving motor is splined to the driving wheel. The scraper chain is sleeved on the driving wheel through a sprocket. The driving wheel is driven by a hydraulic motor to rotate along the coal transportation direction (as shown in the rotation direction in the figure). The sprocket on the driving wheel, on which the scraper chain is installed, drives the scraper chains on both sides to move together along the coal transportation direction. The scraper chains on both sides move and drive the scraper group 11 to operate, so as to pull the raw coal at the heading face to the next-level transportation equipment. It should be noted that for the situation of "coal or muddy gangue is likely to adhere to the scraper groove 101 due to the tightness of the scraper chain", due to the structural reasons of the sprocket, the scraper chain cannot be tightened too much and a certain margin needs to be left (if it is tightened too much, it is easy to get stuck, and the scraper chain will deform and cannot be caught on the sprocket during long-term operation). Since the chain is not completely tightened, there is a certain gap between the scraper and the scraper groove 101 in the prior art (such as Figure 1 the shown gap), and during long-term operation, coal gangue mud will adhere to the lower surface of the scraper and the upper surface of the scraper groove 101, and it will accumulate more and more during long-term operation, resulting in the scraper being stuck. In this embodiment, through the re-design of the scraper group 11, it has two different structures (i.e., a loose structure 111 and a cleaning structure 112), which can not only ensure the gap of the scraper chain but also use the scraping teeth on the newly designed scraper to scrape off the accumulated coal mud gangue, ensuring the long-term smooth operation of the anti-blocking scraper conveyor (the first conveyor of the fully mechanized heading machine).

[0040] Adopting this embodiment is beneficial to improving the cleaning effect and cleaning efficiency of the scraper groove 101 on the basis of ensuring the coal quality, reducing the cleaning labor intensity of the operator and the cleaning work, ensuring the smooth operation of the scraper conveyor, and improving the safety production efficiency.

[0041] Preferably, the scraper group 11 in this embodiment will move cyclically around the bottom wall of the scraper groove 101 to achieve cyclic scraping of the bottom wall of the scraper groove 101.

[0042] In this embodiment, there are multiple scraper groups 11, and the multiple scraper groups 11 are arranged at intervals along the length direction of the scraper groove 101.

[0043] Such a setting is beneficial to further ensuring the loosening effect on the coal flow and further ensuring the continuity and reliability of the loosening of the coal flow.

[0044] The extending directions of the multiple scraper groups 11 in this embodiment are parallel to each other, and the extending direction of each scraper group 11 is parallel to the width direction of the scraper groove 101.

[0045] Optionally, in other embodiments not shown in the figures, the extending direction of the scraper group 11 extends meanderingly along the width direction of the scraper groove 101. Such a setting is beneficial to increasing the corresponding area between the scraper group 11 and the bottom wall of the scraper groove 101, and at the same time is beneficial to increasing the number of loose ends, improving the loosening and cleaning effect of the coal flow in the scraper groove.

[0046] It can be understood that the extending direction and the extending manner of the scraper group 11 can be adjusted according to the actual situation, and no examples are given one by one here.

[0047] Preferably, the plurality of loose ends of any two adjacent scraper groups 11 are alternately arranged in the width direction of the scraper groove 101.

[0048] Taking two adjacent scraper groups 11 as an example, the projections of the plurality of loose ends of the front scraper group 11 on the plane perpendicular to the advancing direction of the scraper group 11 form a plurality of first loose points extending along the width direction of the scraper groove 101, and the projections of the plurality of loose ends of the rear scraper group 11 on the plane perpendicular to the advancing direction of the scraper group 11 form a plurality of second loose points extending along the width direction of the scraper groove 101. The plurality of first loose points and the plurality of second loose points are alternately arranged in the width direction of the scraper groove 101.

[0049] Such a setting avoids the situation that the loosening positions of the plurality of scraper groups 11 in the pushing direction of the scraper group 11 are the same, resulting in poor loosening effect for a long time.

[0050] As Figures 1 to 3 shown, the loosening structure 111 includes a plurality of loosening columns 1111 spaced apart along the width direction of the scraper groove 101. One end of any one of the loosening columns 1111 facing the scraper groove 101 forms a loose end.

[0051] Such a setting facilitates the processing of the loose ends. Preferably, the loosening columns 1111 are made of hard materials to ensure their loosening effect on the coal flow.

[0052] Specifically, the loosening columns 1111 are cylindrical columns. This facilitates the processing of the loosening columns 1111.

[0053] Preferably, in order to improve the conveying effect of the loosening columns 1111 on the coal flow, in other embodiments not shown in the figures, tooth-shaped processing can be performed on the surface of the loosening columns 1111; or in another embodiment not shown in the figures, the loosening columns 1111 can be rotatably arranged.

[0054] It can be understood that the shape, processing, etc. of the loosening columns 1111 can be adjusted according to the actual situation to ensure their loosening effect on the coal flow, and no examples are given one by one here.

[0055] Among them, the height of the loose column 1111 is 10 mm - 15 mm, and the distance between any two adjacent loose columns 1111 is 80 mm - 100 mm.

[0056] In this embodiment, by limiting the height of the loose column 1111, when the height of the loose column 1111 is too low, the bottom end of the loose column 1111 cannot loosen the lower layer of the coal flow, resulting in poor loosening effect; at the same time, when the height of the loose column 1111 is too high, the ineffective length of the upper side of the loose column 1111 that cannot loosen the coal flow is too long, and the bottom end of the loose column 1111 is used to loosen the coal flow for a long time, resulting in uneven overall force on the loose column 1111, and it is easy to loosen, fall off, and be damaged.

[0057] Furthermore, by limiting the distance between two adjacent loose columns 1111, when the distance between two adjacent loose columns 1111 is relatively close, the overlapping loosening area of the coal flow between the two loose columns 1111 is large, which is likely to cause repeated loosening or loosening interference; at the same time, when the distance between two adjacent loose columns 1111 is relatively far, the conveying effect of multiple loose columns 1111 on the coal flow is poor.

[0058] In this embodiment, the loose end of the loose column 1111 is in contact with the bottom wall of the scraper trough 101 to ensure the conveying effect of the loose column 1111 on the coal flow in the scraper trough 101. At the same time, the friction between the loose column 1111 and the scraper trough 101 should be as small as possible to prevent the movement of the loose column 1111 from being blocked.

[0059] As Figure 1 、 Figure 2 and Figure 4 shown, the cleaning structure 112 includes a cleaning strip 1121 extending along the width direction of the scraper trough 101. In the moving direction of the scraper group 11, the front surface of the cleaning strip 1121 is inclined, and the width of the cleaning strip 1121 gradually decreases in the direction towards the bottom wall of the scraper trough 101.

[0060] With this setting, by the inclined front surface of the cleaning strip 1121, the slag in the scraper trough 101 can be scraped off, which is beneficial to ensuring the reliability of the cleaning of the loosened coal flow by the cleaning structure 112.

[0061] Specifically, the cross-sectional shape of the cleaning strip 1121 is a right triangle, and the height of the inclined front surface of the cleaning strip 1121 is 10 mm - 15 mm.

[0062] With this setting, it is convenient for the processing of the inclined surface and the cleaning strip 1121. On the other hand, by limiting the height of the inclined front surface of the cleaning strip 1121 to correspond to the height of the loose column 1111, the cleaning effect on the loosened coal flow is ensured.

[0063] It can be understood that the cross-sectional shape of the cleaning strip 1121 and the shape of the front inclined surface can both be adjusted according to the actual situation. For example, in other embodiments not shown in the figures, the front surface of the cleaning strip 1121 is an inclined arc surface instead of the inclined plane in this embodiment; further, in other embodiments not shown in the figures, the height of the front inclined surface of the cleaning strip 1121 is less than that of the loosening column 1111, and the cross-sectional shape of the cleaning strip 1121 is a right trapezoid.

[0064] Furthermore, the scraper group 11 further includes a cleaning scraper 113 and a loosening scraper 114 that are arranged at intervals along the extending direction of the scraper groove 101. The loosening structure 111 is arranged on the loosening scraper 114, and the cleaning structure 112 is arranged on the cleaning scraper 113.

[0065] This setting facilitates the installation and driving of the loosening structure 111 and the cleaning structure 112, ensuring the reliability of the scraper group 11 in loosening and cleaning the coal flow in the scraper groove 101. On the other hand, separating the loosening structure 111 and the cleaning structure 112 means that when one of them needs to be replaced or disassembled for repair, only the cleaning scraper 113 and the loosening scraper 114 where it is located need to be removed, which is beneficial to improving the convenience of operations such as replacement and maintenance.

[0066] Optionally, in other embodiments not shown in the figures, the scraper group 11 includes an integrated plate, and the loosening structure 111 and the cleaning structure 112 are arranged at intervals along the advancing direction of the scraper group 11 on the integrated plate. This setting facilitates the integrated installation of the loosening structure 111 and the cleaning structure 112, which is beneficial to reducing the processing cost and improving the installation efficiency.

[0067] As Figure 1 shown, the cross-sections of both the cleaning scraper 113 and / or the loosening scraper 114 are I-shaped structures.

[0068] In this embodiment, the cross-sections of both the cleaning scraper 113 and the loosening scraper 114 are I-shaped structures. On the basis of ensuring the transfer effect and reliability of the two sides in the height direction on other structures, the overall weight of the scraper group 11 is reduced, which is beneficial to lightweighting.

[0069] It should be noted that the cross-sectional shape of the cleaning scraper 113 and the loosening scraper 114 can also be adjusted according to the actual situation. For example, in other embodiments not shown in the figures, only the cross-section of the cleaning scraper 113 is an I-shaped structure, and the cross-sectional shape of the loosening scraper 114 can be other shapes such as a rectangle or a trapezoid, or only the cross-section of the loosening scraper 114 is an I-shaped structure, and the cross-sectional shape of the cleaning scraper 113 can be other shapes such as a rectangle or a trapezoid.

[0070] Preferably, weight-reducing holes are also provided on the cleaning scraper 113 and the loosening scraper 114. Such a setting is beneficial to reducing the overall weight of the scraper group 11, so as to further realize the light weight of the scraper group 11.

[0071] It can be understood that the shape, quantity, etc. of the weight-reducing holes can be designed or adjusted according to the situation, and no examples will be given one by one here.

[0072] In summary, the present invention provides a scraper conveyor, aiming at the problem that the first-stage conveyor often gets stuck and causes unsmooth transportation during the tunneling process of a fully-mechanized coal roadheader. When the scraper conveyor is running, the continuous loosening of the coal flow in the scraper chute 101 can be realized through the loosening structure 111, and the cleaning structure 112 timely clears the loosened blockage out of the scraper chute 101 after the loosening structure 111. The timely loosening and cleaning of the blockage adhered to the scraper chute 101 are realized through the scraper group 11, ensuring that the blockage does not accumulate in the scraper chute 101.

[0073] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0074] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0075] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0076] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship of a device or feature shown in the drawings with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

Claims

1. A jam-preventing scraper conveyor, characterized in that, The anti-blocking scraper conveyor has a scraper trough (101) inside. The anti-blocking scraper conveyor includes a scraper group (11). The scraper group (11) is arranged to move cyclically along the extension direction of the scraper trough (101) to push the coal flow flowing through the scraper trough (101). The scraper group (11) includes a loosening structure (111) and a cleaning structure (112). In the moving direction of the scraper group (11), the loosening structure (111) is located in front of the cleaning structure (112). The loosening structure (111) has a plurality of spaced-apart loosening ends to loosen the coal flow in the scraper trough (101) during movement. The cleaning structure (112) is used to push the loosened coal flow to move and output it from the scraper trough (101).

2. The anti-jamming scraper conveyor according to claim 1, wherein, There are multiple scraper groups (11), and the multiple scraper groups (11) are arranged at intervals along the length direction of the scraper trough (101).

3. The anti-jamming scraper conveyor according to claim 1, characterized in that, The multiple loosening ends of any two adjacent scraper groups (11) are arranged alternately in the width direction of the scraper trough (101).

4. The anti-jamming scraper conveyor according to claim 1, characterized in that, The loosening structure (111) includes a plurality of loosening columns (1111) spaced apart along the width direction of the scraper trough (101). One end of any loosening column (1111) facing the scraper trough (101) forms one of the loosening ends.

5. The anti-jamming scraper conveyor according to claim 4, wherein The loosening column (1111) is a cylindrical column body.

6. The anti-jamming scraper conveyor according to claim 5, wherein, The height of the loosening column (1111) is 10 mm - 15 mm, and the spacing between any two adjacent loosening columns (1111) is 80 mm - 100 mm.

7. The anti-jamming scraper conveyor according to claim 1, characterized in that, The cleaning structure (112) includes a cleaning strip (1121) extending along the width direction of the scraper trough (101). In the moving direction of the scraper group (11), the front side surface of the cleaning strip (1121) is inclined, and the width of the cleaning strip (1121) gradually decreases in the direction towards the bottom wall of the scraper trough (101).

8. The anti-jamming scraper conveyor according to claim 7, characterized in that, The cross-sectional shape of the cleaning strip (1121) is a right triangle, and the height of the front inclined surface of the cleaning strip (1121) is 10 mm - 15 mm.

9. The anti-jamming scraper conveyor according to claim 1, characterized in that, The scraper group (11) further includes a cleaning scraper (113) and a loosening scraper (114) arranged at intervals along the extension direction of the scraper trough (101). The loosening structure (111) is arranged on the loosening scraper (114), and the cleaning structure (112) is arranged on the cleaning scraper (113).

10. The anti-jamming scraper conveyor according to claim 9, characterized in that, The cross-section of the cleaning scraper (113) and / or the loosening scraper (114) is an I-shaped structure.

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