Tensioning device of scraper conveyer and scraper conveyer

Abstract

The utility model relates to the technical field of conveying of heading machines, in particular to a tensioning device of a scraper conveyer and the scraper conveyer. The tensioning device of the scraper conveyer comprises a driving frame, a driving piece, a tensioning assembly and a fixing piece, the driving frame is used for being connected with a head chain wheel assembly of the scraper conveyer, and the fixing piece is used for being connected with the tail of the scraper conveyer; one end of the driving piece is connected with the driving frame, the other end of the driving piece is connected with the tensioning assembly, the end, away from the driving piece, of the tensioning assembly is provided with a matching part, and the tensioning assembly is rotationally connected with the fixing piece through the matching part so that the head chain wheel assembly can drive the driving piece and the tensioning assembly to rotate relative to the fixing piece through the driving frame. According to the tensioning device of the scraper conveyer, the machine body of the scraper conveyer can respond to the direction change of the machine head in time, so that the linear distance between the head and the tail of the scraper conveyer is not changed, and a chain is prevented from loosening.

Description

Technical Field

[0001] The present application relates to the technical field of roadheader transportation, and in particular to a tensioning device of a scraper conveyor and a scraper conveyor. Background Art

[0002] Scraper conveyors are often used to load coal mine tunneling equipment. The most important part of the scraper conveyor is the chain device. Excessive chain relaxation will cause the entire coal mining face to stop production, thus interrupting the entire production.

[0003] In the prior art, coal mine tunnels are mostly combined or connected. When the tunneling equipment of the coal mine changes the tunnel, the relative position of the scraper conveyor and the tunneling equipment will change, thus affecting the transportation of coal. Therefore, it is necessary to adjust the position of the head of the scraper conveyor in time so that the head of the scraper conveyor and the tail of the tunneling equipment are seamlessly connected to ensure the smooth transportation of coal.

[0004] However, the body of the scraper conveyor cannot adjust the direction of the nose of the scraper conveyor in time, so that the body deflects relative to its nose, thereby shortening the straight-line distance between the nose and the tail, resulting in chain slack. Utility Model Content

[0005] The present application provides a tensioning device for a scraper conveyor and a scraper conveyor. The tensioning device for the scraper conveyor enables the body of the scraper conveyor to respond promptly to changes in the direction of the head, so that the straight-line distance between the head and tail of the scraper conveyor remains unchanged, preventing the chain from loosening.

[0006] In a first aspect, the tensioning device of the scraper conveyor provided in the present application includes a drive frame, a drive member, a tensioning assembly and a fixing member, wherein the drive frame is used to connect to the head sprocket assembly of the scraper conveyor, and the fixing member is used to connect to the tail of the scraper conveyor.

[0007] One end of the driving member is connected to the driving frame, and the other end of the driving member is connected to the tensioning assembly. The end of the tensioning assembly away from the driving member has a matching portion, and the tensioning assembly is rotatably connected to the fixed member through the matching portion, so that the head sprocket assembly drives the driving member and the tensioning assembly to rotate relative to the fixed member through the driving frame.

[0008] In a possible implementation, the tensioning device of the scraper conveyor provided in the present application has a cylindrical fixing member, an arc-shaped mating portion, a portion of the side surface of the fixing member is embedded in the mating portion, and the mating portion rotates relative to the side surface of the fixing member.

[0009] In a possible implementation, the tensioning device of the scraper conveyor provided in the present application comprises a tensioning assembly including a connecting rod and a first connecting member arranged at one end of the connecting rod, and the mating portion is arranged on the connecting rod.

[0010] The first connecting member is provided with an inserting groove, and the connecting rod is inserted into the inserting groove to be connected with the first connecting member.

[0011] In a possible implementation, the tensioning device of the scraper conveyor provided in the present application also includes a second connecting member, the first connecting member has a first connecting hole, the connecting rod is provided with a second connecting hole, and the second connecting member passes through the first connecting hole and the second connecting hole to connect the connecting rod and the first connecting member.

[0012] In a possible implementation, in the tensioning device of the scraper conveyor provided in the present application, the end of the first connecting member facing away from the connecting rod has a first plug hole, and the driving member is inserted into the first plug hole to connect with the first connecting member.

[0013] In a possible implementation, the tensioning device of the scraper conveyor provided in the present application has a second plug hole on the side of the drive frame facing the drive member, and the drive member is inserted into the second plug hole to be connected to the drive frame.

[0014] In a possible implementation, the tensioning device of the scraper conveyor provided in the present application has two connecting parts arranged opposite to each other on the side of the driving frame facing the head sprocket assembly, and the connecting parts have mounting holes for inserting the head sprocket assembly.

[0015] In a possible implementation, the tensioning device of the scraper conveyor provided in the present application further includes a plurality of third connecting members, and the connecting portion is connected to the head sprocket assembly through the third connecting members.

[0016] In one possible implementation, the tensioning device of the scraper conveyor provided in the present application has a driving member having a fixed end and a movable end, the fixed end is connected to the tensioning assembly, and the movable end is connected to the driving frame, so as to drive the head sprocket assembly to move relative to the tensioning assembly through the driving frame.

[0017] In a second aspect, the scraper conveyor provided in the present application comprises a scraper conveyor body and a tensioning device of any scraper conveyor provided in the first aspect above, which is arranged on the scraper conveyor body.

[0018] The present application provides a tensioning device for a scraper conveyor and a scraper conveyor. The tensioning device for the scraper conveyor is provided by setting a driving frame, a driving member, a tensioning assembly and a fixing member. The driving frame is used to connect with the head sprocket assembly of the scraper conveyor, and the fixing member is used to connect with the tail of the scraper conveyor. One end of the driving member is connected to the driving frame, and the other end of the driving member is connected to the tensioning assembly, so that the driving frame, the driving member and the tensioning assembly together form a rigid mechanical system. The end of the tensioning assembly away from the driving member has a matching portion, and the tensioning assembly is rotatably connected with the fixing member through the matching portion, so that the head sprocket assembly drives the driving member and the tensioning assembly to rotate relative to the fixing member through the driving frame, so that the scraper conveyor can realize turning, and the fuselage of the scraper conveyor can respond to the direction change of the head in time, so that the straight-line distance between the head and the tail of the scraper conveyor remains unchanged, preventing the chain from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a tensioning device for a scraper conveyor provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the middle tensioning assembly;

[0022] Figure 3 A diagram showing the usage status of the tensioning device of the scraper conveyor provided in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 100 - driving frame; 110 - second plug hole; 120 - connecting part; 121 - mounting hole;

[0025] 200-driving member; 210-fixed end; 220-movable end;

[0026] 300-tensioning assembly; 310-connecting rod; 311-matching portion; 320-first connecting member; 321-plug-in slot; 322-first plug-in hole;

[0027] 400-fixing parts;

[0028] 500-head sprocket assembly;

[0029] 600- second connecting member;

[0030] 700-the third connecting piece.

[0031] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0033] Secondly, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Then, it should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] As shown in the background technology, in the prior art, coal mine tunnels mostly use combined tunnels or joint tunnels. When the coal mine tunnel excavation equipment changes the tunnel, the relative position of the scraper conveyor and the coal mine tunnel excavation equipment will change, thus affecting the transportation of coal. Therefore, it is necessary to adjust the position of the head of the scraper conveyor in time so that the head of the scraper conveyor and the tail of the excavation equipment are seamlessly connected to ensure the smooth transportation of coal. However, the body of the scraper conveyor cannot follow the adjustment direction of the head of the scraper conveyor in time, causing the body to deflect relative to its head, thereby shortening the straight-line distance between the head and the tail, resulting in chain slack.

[0037] Based on this, the present application provides a tensioning device for a scraper conveyor and a scraper conveyor. The tensioning device for the scraper conveyor is provided by setting a drive frame, a driving member, a tensioning assembly and a fixing member. The drive frame is used to connect with the head sprocket assembly of the scraper conveyor, and the fixing member is used to connect with the tail of the scraper conveyor. One end of the driving member is connected to the drive frame, and the other end of the driving member is connected to the tensioning assembly, so that the drive frame, the driving member and the tensioning assembly together form a rigid mechanical system. The end of the tensioning assembly away from the driving member has a matching portion, and the tensioning assembly is rotatably connected with the fixing member through the matching portion, so that the head sprocket assembly drives the driving member and the tensioning assembly to rotate relative to the fixing member through the drive frame, so that the scraper conveyor can realize turning, and the fuselage of the scraper conveyor can respond to the direction change of the head in time, so that the straight-line distance between the head and the tail of the scraper conveyor remains unchanged, preventing the chain from loosening.

[0038] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0039] Reference Figure 1 and Figure 2 As shown, the tensioning device of the scraper conveyor provided in the present application includes a drive frame 100, a drive member 200, a tensioning assembly 300 and a fixing member 400, the drive frame 100 is used to connect with the head sprocket assembly 500 of the scraper conveyor, and the fixing member 400 is used to connect with the tail of the scraper conveyor.

[0040] One end of the driving member 200 is connected to the driving frame 100, and the other end of the driving member 200 is connected to the tensioning assembly 300. The end of the tensioning assembly 300 facing away from the driving member 200 has a mating portion 311. The tensioning assembly 300 is rotatably connected to the fixing member 400 through the mating portion 311, so that the head sprocket assembly 500 drives the driving member 200 and the tensioning assembly 300 to rotate relative to the fixing member 400 through the driving frame 100.

[0041] It can be understood that by setting the drive frame 100 to be connected with the head sprocket assembly 500 of the scraper conveyor, when the scraper conveyor turns, the head sprocket assembly 500 of the scraper conveyor deflects, and the drive frame 100 fixed on the head sprocket assembly 500 deflects synchronously with the head sprocket assembly 500.

[0042] Furthermore, one end of the driving member 200 is connected to the driving frame 100, and the other end of the driving member 200 is connected to the tensioning assembly 300, so that the tensioning assembly 300 is connected to the driving frame 100 through the driving member 200, and the driving frame 100, the driving member 200 and the tensioning assembly 300 together form a rigid mechanical system. When the driving frame 100 follows the deflection of the head sprocket assembly 500, the driving frame 100 drives the driving member 200 and the tensioning assembly 300 to deflect synchronously, so that the fuselage of the scraper conveyor can respond to the direction change of the head in time, and the straight-line distance between the head and the tail of the scraper conveyor remains unchanged, so that the chain of the scraper conveyor is always kept in a tensioned state during the turning process to prevent the chain from loosening.

[0043] Furthermore, by providing a fixing member 400 connected to the tail of the scraper conveyor, the tensioning assembly 300 is rotatably connected to the fixing member 400, so that the scraper conveyor can achieve turning.

[0044] It can be understood that, compared with the prior art, the body of the scraper conveyor cannot follow the adjustment direction of the head of the scraper conveyor in time, so that the body deflects relative to its head, thereby shortening the straight-line distance between the head and the tail, resulting in chain slack. The tensioning device of the scraper conveyor in this embodiment is provided with a drive frame 100, a drive member 200, a tensioning assembly 300 and a fixing member 400. The drive frame 100 is used to connect with the head sprocket assembly 500 of the scraper conveyor, and the fixing member 400 is used to connect with the tail of the scraper conveyor. One end of the drive member 200 is connected to the drive frame 100, and the other end of the drive member 200 is connected to the tensioning assembly 300, so that the drive frame 100, the drive member 200 and the tensioning assembly 300 together form a rigid mechanical system. The end of the tensioning assembly 300 facing away from the driving member 200 has a mating portion 311, and the tensioning assembly 300 is rotatably connected to the fixing member 400 via the mating portion 311, so that the head sprocket assembly 500 drives the driving member 200 and the tensioning assembly 300 to rotate relative to the fixing member 400 via the driving frame 100, so that the scraper conveyor can turn, and the fuselage of the scraper conveyor can respond to the change in the direction of the head in time, so that the straight-line distance between the head and the tail of the scraper conveyor remains unchanged, preventing the chain from loosening.

[0045] In some embodiments, reference Figure 1 and Figure 2As shown, the fixing member 400 is cylindrical, the matching portion 311 is arc-shaped, part of the side surface of the fixing member 400 is embedded in the matching portion 311, and the matching portion 311 rotates relative to the side surface of the fixing member 400.

[0046] For example, the fixing member 400 and the scraper conveyor may be connected by screws or other methods, and the present application does not impose too many restrictions on this.

[0047] It can be understood that by setting the fixing member 400 into a cylindrical shape and setting the matching portion 311 into an arc shape, a portion of the side surface of the fixing member 400 is embedded in the matching portion 311 to connect the connecting rod 310 and the fixing member 400. At the same time, the arc-shaped matching portion 311 can rotate around the side surface of the fixing member 400 to realize the rotation of the connecting rod 310 relative to the fixing member 400.

[0048] In some embodiments, reference Figure 2 As shown, the tensioning assembly 300 includes a connecting rod 310 and a first connecting member 320 disposed at one end of the connecting rod 310 , and a matching portion 311 is disposed on the connecting rod 310 .

[0049] The first connecting member 320 has an inserting slot 321 , and the connecting rod 310 is inserted into the inserting slot 321 to be connected to the first connecting member 320 .

[0050] It can be understood that the tensioning assembly 300 is formed by arranging the connecting rod 310 and the first connecting member 320 , and a plug-in position is provided for the connecting rod 310 by arranging the plug-in groove 321 on the first connecting member 320 , so that the connecting rod 310 is connected to the first connecting member 320 .

[0051] It should be noted that the first connecting member 320 is connected to the connecting rod 310, and the first connecting member 320 can push the connecting rod 310 to perform a circular motion around the fixing member 400, so as to drive the scraper conveyor to achieve a turn.

[0052] In some embodiments, reference Figure 2 As shown, a second connecting member 600 is also included. The first connecting member 320 has a first connecting hole, and the connecting rod 310 is provided with a second connecting hole. The second connecting member 600 passes through the first connecting hole and the second connecting hole to connect the connecting rod 310 and the first connecting member 320.

[0053] Exemplarily, the second connecting member 600 may be a bolt or other fasteners, as long as it can fix the first connecting member 320 and the connecting rod 310 . The present application does not impose too many restrictions on the type of the second connecting member 600 .

[0054] It can be understood that by setting a first connecting hole on the first connecting member 320 and a second connecting hole on the connecting rod 310, the second connecting member 600 is passed through the first connecting hole and the second connecting hole to fix the connecting rod 310 to the first connecting member 320, so that the first connecting member 320 can push the connecting rod 310 to rotate around the fixing member 400.

[0055] In some embodiments, reference Figure 1 and Figure 2 As shown, the end of the first connecting member 320 facing away from the connecting rod 310 has a first inserting hole 322 , and the driving member 200 is inserted into the first inserting hole 322 to be connected with the first connecting member 320 .

[0056] Specifically, by providing the first plug hole 322 at the end of the first connecting member 320 , a plug position is provided for the driving member 200 to connect the first connecting member 320 with the driving member 200 , so that the driving member 200 can drive the first connecting member 320 to deflect synchronously.

[0057] In some embodiments, reference Figure 1 As shown, the driving frame 100 has a second plugging hole 110 on one side facing the driving member 200 , and the driving member 200 is inserted into the second plugging hole 110 to be connected with the driving frame 100 .

[0058] Specifically, by providing the second plugging hole 110 on one side of the driving frame 100 , a plugging position is provided for the driving member 200 to connect the driving frame 100 with the driving member 200 , so that the driving frame 100 can drive the driving member 200 to deflect synchronously.

[0059] In some embodiments, reference Figure 1 As shown, the driving frame 100 has two connecting parts 120 arranged opposite to each other on one side facing the head sprocket assembly 500 , and the connecting parts 120 have mounting holes 121 for inserting the head sprocket assembly 500 .

[0060] Specifically, two connecting parts 120 are provided on the driving frame 100, and mounting holes 121 are provided on the connecting parts 120 so that the head sprocket assembly 500 passes through the mounting holes 121, thereby realizing the connection between the driving frame 100 and the head sprocket assembly 500, so that the driving frame 100 can deflect synchronously with the head sprocket assembly 500.

[0061] In some embodiments, reference Figure 1 As shown, a plurality of third connecting members 700 are further included, and the connecting portion 120 and the head sprocket assembly 500 are connected via the third connecting members 700 .

[0062] Exemplarily, the third connecting member 700 may be a screw or other fasteners, and the present application does not impose too many restrictions on the type of the third connecting member 700.

[0063] For example, a plurality of through holes may be provided on the connection portion 120 , a plurality of threaded holes may be provided on the head sprocket assembly 500 , and the third connecting members 700 may be passed through the through holes and connected to the threaded holes by threads in a one-to-one correspondence.

[0064] It can be understood that by providing the third connecting member 700, the connecting portion 120 and the head sprocket assembly 500 are fixed to prevent relative movement between the connecting portion 120 and the head sprocket assembly 500, further ensuring that the driving member 200 can deflect synchronously with the head sprocket assembly 500.

[0065] In some embodiments, reference Figure 1 As shown, the driving member 200 has a fixed end 210 and a movable end 220 , wherein the fixed end 210 is connected to the tensioning assembly 300 , and the movable end 220 is connected to the driving frame 100 , so as to drive the head sprocket assembly 500 to move relative to the tensioning assembly 300 through the driving frame 100 .

[0066] Exemplarily, the driving member 200 may be a hydraulic cylinder or other driving device, as long as it can drive the driving member 200 to move relative to the tensioning assembly 300, and the present application does not impose too many restrictions on this.

[0067] It should be noted that the tensioning assembly 300 and the driving frame 100 are connected by the driving member 200. When the scraper chain is used, the moving end 220 of the driving member 200 moves along the Figure 1 The driving member 200 extends in the X direction as shown by the middle arrow to push the driving frame 100 to move in the X direction, so that the driving member 200 pushes the head sprocket assembly 500 to move in the X direction to increase the distance from the head sprocket assembly 500 to the tail of the scraper conveyor, thereby realizing the re-tensioning of the scraper chain. The method is simple to operate, has a strong chain tightening force, is convenient to tighten the chain, has a good effect, and further reduces the possibility of the scraper chain being derailed.

[0068] The present application also provides a scraper conveyor, comprising a scraper conveyor body and a tensioning device of the scraper conveyor arranged on the scraper conveyor body.

[0069] Among them, the specific structure and working mode of the tensioning device of the scraper conveyor are described in detail in the above embodiments, and will not be repeated here.

[0070] It should be noted that, refer to Figure 3As shown, the drive frame 100, the drive member 200 and the tensioning assembly 300 together form a rigid mechanical system, which together complete the tensioning function of the scraper chain. When the scraper conveyor turns, the drive frame 100 fixed on the head sprocket assembly 500 of the scraper conveyor deflects accordingly, thereby driving the drive member 200 and the tensioning assembly 300 connected thereto to deflect synchronously to rotate around the fixed block. At this time, the distance from the center point of the head sprocket assembly 500 to the fixed block remains unchanged, which ensures that the center distance from the head sprocket to the tail sprocket remains unchanged, thereby achieving that the chain of the scraper conveyor always remains in a tensioned state during the turning process.

[0071] It can be understood by those skilled in the art that the tensioning device of the scraper conveyor and the scraper conveyor provided in the present application, the tensioning device of the scraper conveyor is provided by setting a driving frame 100, a driving member 200, a tensioning assembly 300 and a fixing member 400, the driving frame 100 is used to connect with the head sprocket assembly 500 of the scraper conveyor, and the fixing member 400 is used to connect with the tail of the scraper conveyor. One end of the driving member 200 is connected to the driving frame 100, and the other end of the driving member 200 is connected to the tensioning assembly 300, so that the driving frame 100, the driving member 200 and the tensioning assembly 300 together form a rigid mechanical system. The end of the tensioning assembly 300 facing away from the driving member 200 has a mating portion 311, and the tensioning assembly 300 is rotatably connected to the fixing member 400 via the mating portion 311, so that the head sprocket assembly 500 drives the driving member 200 and the tensioning assembly 300 to rotate relative to the fixing member 400 via the driving frame 100, so that the scraper conveyor can turn, and the fuselage of the scraper conveyor can respond to the change in the direction of the head in time, so that the straight-line distance between the head and the tail of the scraper conveyor remains unchanged, preventing the chain from loosening.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0073] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0074] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A tensioning device for a scraper conveyor, characterized in that: It comprises a driving frame (100), a driving member (200), a tensioning assembly (300) and a fixing member (400), wherein the driving frame (100) is used to be connected to a head sprocket assembly (500) of a scraper conveyor, and the fixing member (400) is used to be connected to a tail of the scraper conveyor; One end of the driving member (200) is connected to the driving frame (100), and the other end of the driving member (200) is connected to the tensioning assembly (300). The end of the tensioning assembly (300) facing away from the driving member (200) has a matching portion (311). The tensioning assembly (300) is rotatably connected to the fixing member (400) via the matching portion (311), so that the head sprocket assembly (500) drives the driving member (200) and the tensioning assembly (300) to rotate relative to the fixing member (400) via the driving frame (100).

2. The tensioning device of the scraper conveyor according to claim 1, characterized in that: The fixing member (400) is cylindrical, the matching portion (311) is arc-shaped, part of the side surface of the fixing member (400) is embedded in the matching portion (311), and the matching portion (311) rotates relative to the side surface of the fixing member (400).

3. The tensioning device of the scraper conveyor according to claim 2, characterized in that: The tensioning assembly (300) comprises a connecting rod (310) and a first connecting member (320) arranged at one end of the connecting rod (310), and the matching portion (311) is arranged on the connecting rod (310); The first connecting member (320) is provided with an inserting groove (321), and the connecting rod (310) is inserted into the inserting groove (321) to be connected with the first connecting member (320).

4. The tensioning device of the scraper conveyor according to claim 3, characterized in that: It also includes a second connecting member (600), the first connecting member (320) has a first connecting hole, the connecting rod (310) is provided with a second connecting hole, and the second connecting member (600) passes through the first connecting hole and the second connecting hole to connect the connecting rod (310) and the first connecting member (320).

5. The tensioning device for a scraper conveyor according to claim 3, characterized in that: The end of the first connecting member (320) facing away from the connecting rod (310) has a first plug hole (322), and the driving member (200) is inserted into the first plug hole (322) to be connected with the first connecting member (320).

6. The tensioning device for a scraper conveyor according to any one of claims 1 to 5, characterized in that: The driving frame (100) has a second plug hole (110) on one side facing the driving member (200), and the driving member (200) is inserted into the second plug hole (110) to be connected with the driving frame (100).

7. The tensioning device for a scraper conveyor according to any one of claims 1 to 5, characterized in that: The driving frame (100) has two connecting parts (120) arranged opposite to each other on one side facing the head sprocket assembly (500), and the connecting parts (120) have mounting holes (121) for inserting the head sprocket assembly (500).

8. The tensioning device for a scraper conveyor according to claim 7, characterized in that: It also includes a plurality of third connecting members (700), and the connecting portion (120) and the head sprocket assembly (500) are connected via the third connecting members (700).

9. The tensioning device for a scraper conveyor according to any one of claims 1 to 5, characterized in that: The driving member (200) comprises a fixed end (210) and a movable end (220), wherein the fixed end (210) is connected to the tensioning assembly (300), and the movable end (220) is connected to the driving frame (100), so as to drive the head sprocket assembly (500) to move relative to the tensioning assembly (300) through the driving frame (100).

10. A scraper conveyor, characterized in that: The invention comprises a scraper conveyor body and a tensioning device for a scraper conveyor according to any one of claims 1 to 9 arranged on the scraper conveyor body.

Images