Combined scraper conveyor

Abstract

The utility model provides a combined scraper conveyor, which relates to the field of conveyors, and comprises a machine head unit and a machine body unit, the machine body unit comprises a plurality of scraper grooves and a scraper chain, the plurality of scraper grooves are spliced and fixed end to end, chain wheels are rotatably arranged in the plurality of scraper grooves, and the scraper chain is arranged on the chain wheels in a transmission manner; the machine head unit comprises a head groove, a power piece and a conveying assembly, the power piece is fixedly arranged outside the head groove, the conveying assembly is arranged in the head groove, and the power piece is in transmission connection with the conveying assembly; the head groove is formed in the scraper groove in the end position and is arranged in a telescopic mode in the length direction of the scraper groove, and the power piece is in transmission connection with the chain wheel through the transmission assembly. The whole length of the scraper conveyor can be adjusted in a stepless mode more finely by adjusting the expansion amount of the head groove, the conveying distance of materials can be controlled more accurately, and the fine operation requirements in different scenes are met.

Description

A combined scraper conveyor Technical Field

[0001] This utility model relates to the field of conveyors, and in particular to a combined scraper conveyor. Background Technology

[0002] A scraper conveyor is a mechanical device that uses a scraper chain to continuously transport bulk materials in a closed trough. The motor drives the sprocket to make the scraper chain circulate in the trough, so that the material moves along the trough under the thrust of the scraper chain, thus achieving continuous conveying. Because scraper conveyors can transport materials over long distances, they are usually designed with a modular and spliced ​​structure to facilitate transport.

[0003] Currently, a Chinese patent application with publication number CN 214933191 U and publication date of November 30, 2021, proposes a combined scraper conveyor device, including a head section, a transition section and a tail section. The front of the transition section is fixedly provided with a locking groove, and the back of the transition section is provided with a locking rod.

[0004] In use, by setting the locking groove and locking bar, the scraper conveyor device can combine and install multiple transition parts, and by setting the locking bar at the head and the locking groove at the tail, the head, transition parts and tail can be combined into a whole.

[0005] Regarding the aforementioned technologies, scraper conveyors can be configured with different numbers of transition sections according to the required conveying length, flexibly setting the overall length of the scraper conveyor. However, since the length of a single transition section is fixed, the length of the scraper conveyor after assembly can only be an integer multiple of the length of the transition section, making it impossible to adjust the length of the scraper conveyor more precisely, which in turn makes it impossible to accurately control the material conveying distance. Summary of the Invention

[0006] In order to more accurately control the overall length of the scraper conveyor and thus more accurately control the material conveying distance, this utility model provides a combined scraper conveyor.

[0007] This utility model provides a combined scraper conveyor, which adopts the following technical solution:

[0008] A combined scraper conveyor includes a head unit and a body unit. The body unit includes multiple scraper troughs and a scraper chain. The multiple scraper troughs are spliced ​​and fixed end to end. Each of the multiple scraper troughs has a rotatable sprocket inside. The scraper chain is driven by the sprockets. The head unit includes a head trough, a power component, and a conveying assembly. The power component is fixed outside the head trough, and the conveying assembly is inside the head trough. The power component is driven by the conveying assembly. The head trough is located on the scraper trough at the end position and extends and retracts along the length of the scraper trough. The power component is driven by the sprockets through a transmission assembly.

[0009] By adopting the above technical solution, the head trough of the head unit adopts a structure design that extends and retracts along the length of the scraper trough. When it is necessary to adjust the overall length of the conveyor, multiple body units are first spliced ​​end to end to adjust the overall length of the scraper conveyor to an approximate position. Then, the head trough can be extended and retracted to compensate for any remaining length beyond an integer multiple of the body unit's length. Once the number of scraper troughs in the body unit is determined, the overall length of the conveyor can be infinitely adjusted by adjusting the extension and retraction of the head trough. Material is driven and conveyed into the head trough by the scraper chain within the scraper trough. Subsequently, the material falls onto the conveying component of the head trough and is exited from the outlet position of the head trough by the conveying component. Thus, the extension and retraction of the head trough breaks through the limitation that the overall length of the scraper conveyor must be an integer multiple of the body unit's length when adjusting the length of a traditional combined scraper conveyor, achieving precise adjustment of the conveyor length and thereby accurately controlling the material conveying distance.

[0010] Optionally, the transmission assembly includes a mounting bracket, a first gear, a second gear, a third gear, and a locking member. The first gear is slidably disposed in the middle of the mounting bracket in a vertical direction. The second gear and the third gear are symmetrically disposed on both sides of the first gear. The second gear and the third gear are both slidably disposed on the mounting bracket in a horizontal direction. The locking member is used to fix the first gear, the second gear, and the third gear on the mounting bracket. The second gear is drivenly connected to the power component, and the third gear is drivenly connected to the scraper chain. The first gear meshes with the second gear and the third gear respectively.

[0011] By adopting the above technical solution, when the position of the head groove relative to the scraper groove expands or contracts, the position of the power component relative to the sprocket changes. At this time, adjusting the distance between the second and third gears keeps the position of the second gear relative to the power component constant, and keeps the position of the third gear relative to the sprocket constant. Adjusting the height of the first gear allows the second gear to drive the third gear through the first gear, thereby driving the sprocket to rotate. The locking component can fix the first, second, and third gears in different adjustable positions, improving the stability of power transmission. This transmission assembly uses a slidingly adjustable three-gear structure. When the head groove expands or contracts, adjusting the vertical height of the first gear and the horizontal distance between the second and third gears maintains the effective meshing of the transmission assembly. This adapts to the expansion and contraction displacement of the head groove while ensuring the continuity of power transmission, solving the technical problem of transmission failure during expansion and contraction.

[0012] Optionally, the mounting bracket is further provided with a screw assembly, which includes a first screw, a second screw, a first slider, a second slider, and a third slider; the first screw is rotatably disposed in the middle of the mounting bracket in a vertical direction, the first slider is engaged with the first screw, and the first gear is rotatably disposed on the first slider; the second screw is rotatably disposed on the mounting bracket along the length direction of the head groove, the second screw includes a positive thread portion and a negative thread portion disposed opposite to each other, the positive thread portion and the negative thread portion are respectively disposed at both ends of the second screw, the second slider is engaged with the positive thread portion, the second gear is rotatably disposed on the second slider, the third slider is engaged with the negative thread portion, and the third gear is rotatably disposed on the third slider.

[0013] By adopting the above technical solution, the rotation of the first screw drives the first slider to move vertically, and the rotation of the second screw drives the second and third sliders to move closer or further apart. Specifically, the second screw, through the linkage design of the positive and negative thread portions, allows the second slider and the third gear to move synchronously towards each other or relative to each other when the second screw is rotated. Combined with the control of the lifting and lowering of the first gear by the first screw, precise linkage adjustment of the gear set is achieved. Furthermore, the self-locking characteristic of the screw structure reduces the probability of gear displacement. Thus, the mechanical linkage structure of the screw assembly makes gear position adjustment more precise and efficient, significantly improving the convenience and reliability of transmission system adjustment.

[0014] Optionally, the mounting bracket is slidably disposed on the head groove along the length direction of the head groove.

[0015] By adopting the above technical solution, the sliding fit design between the mounting frame and the head trough allows the entire transmission assembly to move synchronously with the extension and retraction of the head trough; when adjusting the conveyor length, the transmission assembly always maintains a stable relative position with the head trough. This improves the stability of the power transmission path, thereby reducing the misalignment problem of the transmission assembly caused by the extension and retraction of the head trough.

[0016] Optionally, the conveying assembly is disposed at the bottom of the head trough, and the position of the conveying assembly is lower than the bottom of the scraper trough; the conveying assembly includes multiple support rollers and a conveyor belt, the multiple support rollers are rotatably disposed in the head trough, the conveyor belt covers the outside of the multiple support rollers, and the support rollers are connected to the power component for transmission.

[0017] By adopting the above technical solution, the conveyor belt is set below the scraper trough to form a material receiving transition zone. When the material is transferred from the scraper trough to the head trough by the scraper chain, the material will fall onto the conveyor belt and be discharged from the outlet of the head trough under the conveyor belt. This not only ensures the continuity of material conveying but also reduces splashing loss during the material transfer process and improves the reliability of the conveying system.

[0018] Optionally, a guide plate is provided at the bottom of the head trough, the guide plate is located below the conveyor belt, and the guide plate extends to the outlet position of the head trough.

[0019] By adopting the above technical solution, the guide plate extends to the head trough outlet to form a flow channel, which guides the material on the conveyor belt in a directional manner. When the material reaches the end of the conveyor belt, the guide plate can constrain the material movement trajectory, reduce the probability of the material falling into the interlayer between the conveyor belt and the head trough, and at the same time reduce the phenomenon of material scattering at the outlet.

[0020] Optionally, a guide rail is provided on the outer end face of the scraper groove, the guide rail is arranged along the length direction of the scraper groove, and a guide rail groove is provided on the inner end face of the head groove, the guide rail groove is arranged along the length direction of the head groove, and the guide rail is slidably disposed in the guide rail groove; a plurality of first positioning holes are provided on the guide rail along the length direction, and a second positioning hole is provided in the guide rail groove, and positioning bolts are provided in the corresponding first positioning holes and second positioning holes.

[0021] By adopting the above technical solution, when the guide rail slides in the guide rail groove, the head groove will expand and contract relative to the scraper groove, thereby adjusting the expansion and contraction length of the head groove. The sliding cooperation between the guide rail and the guide rail groove can improve the stability of the sliding. Combined with the fixing of the positioning bolt, it not only ensures the smoothness of the head groove expansion and contraction adjustment, but also can be fixed by multiple positioning holes with the positioning bolt to achieve precise positioning of different expansion and contraction amounts, so that the length adjustment has both flexibility and stability.

[0022] Optionally, connecting flanges are provided at both ends of the scraper groove, and adjacent scraper grooves are fixedly connected through the connecting flanges.

[0023] By adopting the above technical solutions, the standardized design of the connecting flanges allows the scraper troughs to be quickly assembled with bolts, improving the assembly efficiency of the conveyor.

[0024] Optionally, the connecting flange is provided with a notch, which is located on both sides of the guide rail.

[0025] By adopting the above technical solution, the notches are symmetrically set on both sides of the guide rail, leaving installation space for the matching installation of the guide rail and the guide rail groove, thus avoiding spatial interference between the flange and the guide rail structure.

[0026] In summary, this utility model has at least one of the following beneficial technical effects:

[0027] By adopting a retractable head unit structure, once the number of scraper troughs is determined, the overall length of the scraper conveyor can be adjusted more precisely by adjusting the extension and retraction of the head trough. This allows for more accurate control of the material conveying distance, meeting the needs of refined operations in different scenarios.

[0028] Mechanical adjustment is achieved through three interconnected gear structures and screw assemblies. During the extension and retraction of the machine head, the transmission assembly can automatically maintain gear meshing, enabling it to adapt to changes in the position of the head slot while ensuring continuous and stable power transmission, thus reducing transmission failure and power interruption issues.

[0029] The standardized connecting flange design of the scraper trough, combined with the cooperation of the guide rail groove and positioning bolts, enables the rapid splicing and precise positioning of multiple scraper troughs. At the same time, the combination design of the low-position layout of the conveyor belt and the guide plate optimizes the material transfer process, reduces material transfer loss, and ensures both structural strength and functionality and ease of maintenance. Attached Figure Description

[0030] Figure 1 is a front structural diagram of an embodiment of this application;

[0031] Figure 2 is a schematic diagram of the top structure of an embodiment of this application;

[0032] Figure 3 is a cross-sectional view AA of Figure 2;

[0033] Figure 4 is a schematic diagram of the scraper groove structure of this application;

[0034] Figure 5 is a schematic diagram of the head slot structure of this application;

[0035] Figure 6 is a magnified view of part A in Figure 5.

[0036] Explanation of reference numerals in the attached drawings: 100, head unit; 110, head groove; 111, guide rail groove; 112, second positioning hole; 113, positioning bolt; 114, guide plate; 120, power component; 200, body unit; 210, scraper groove; 211, guide rail; 212, first positioning hole; 213, connecting flange; 214, notch; 220, scraper chain; 230, sprocket; 300, conveying assembly; 310, support roller; 320, conveyor belt; 400, transmission assembly; 410, mounting bracket; 420, first gear; 430, second gear; 440, third gear; 450, locking component; 500, screw assembly; 510, first screw; 520, second screw; 521, positive thread; 522, negative thread; 530, first slider; 540, second slider; 550, third slider. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to Figures 1 to 6.

[0038] This utility model discloses a combined scraper conveyor. Referring to Figures 1 to 3, a combined scraper conveyor mainly includes a head unit 100 and a body unit 200. The body unit 200 is composed of multiple scraper grooves 210 spliced ​​end to end. Adjacent scraper grooves 210 are fixedly connected by connecting flanges 213. Each scraper groove 210 has a sprocket 230 rotatably mounted on its inner wall, and a scraper chain 220 surrounds the sprocket 230 to form a closed-loop transmission structure. The head unit 100 includes a head groove 110, a power component 120, and a conveying assembly 300. The head groove 110 is slidably disposed outside the scraper grooves 210 at the ends, allowing the head groove 110 to extend and retract relative to the scraper grooves 210 at the ends. The power component 120 is fixedly disposed on the head groove 110, and the conveying assembly 300 is disposed at the bottom of the head groove 110. The power component 120 is used to drive the sprocket 230 in the scraper groove 210 and the conveying assembly 300 in the head groove 110 to rotate.

[0039] During installation, the multiple scraper troughs 210 are first spliced ​​end to end to adjust the overall length of the scraper conveyor to the approximate position. Then, the head trough 110 is extended to compensate for the margin beyond the integer multiple of the length of the body unit 200, so as to adjust the precise length of the scraper conveyor. When conveying materials, the materials are driven by the scraper chain 220 in the scraper trough 210 and conveyed to the head trough 110. Then, the materials fall on the conveying component 300 of the head trough 110 and are output from the head trough 110 from the outlet position by the conveying component 300.

[0040] Referring to Figure 4, two sets of guide rails 211 are symmetrically arranged on the top and bottom outer walls of the scraper groove 210. Both sets of guide rails 211 extend along the length of the scraper groove 210, and multiple first positioning holes 212 are provided on the guide rails 211 at equal intervals.

[0041] Referring to Figure 5, two sets of guide rail grooves 111 are symmetrically arranged on the top and bottom inner walls of the head groove 110. Both sets of guide rail grooves 111 extend along the length direction of the head groove 110. During installation, the guide rails 211 provided on the scraper groove 210 are slidably placed in the guide rail grooves 111, so that the head groove 110 is slidably connected to the guide rails 211 of the scraper groove 210 through the guide rail grooves 111.

[0042] Referring to Figure 5, the guide rail groove 111 is provided with a second positioning hole 112. The head groove 110 is telescopically positioned by inserting the positioning bolt 113 into the first positioning hole 212 and the second positioning hole 112.

[0043] Referring to Figure 4, in order to reduce the interference between the connecting flange 213 at the end of the scraper groove 210 and the guide rail 211 when the guide rail 211 and the guide rail groove 111 are installed together, notches 214 are provided on the connecting flange 213 at the positions on both sides of the guide rail 211 to form a clearance space.

[0044] Referring to Figures 1 and 2, the power component 120 is fixed to the outside of the head groove 110. The power component 120 adopts a three-phase motor. The output shaft of the power component 120 is provided with a double sprocket 230, so that the power component 120 can drive the sprocket 230 rotating on the scraper groove 210 and the conveying component 300 on the head groove 110 respectively through the two sprockets 230.

[0045] Referring to Figure 3, the conveying assembly 300 is located at the bottom of the head trough 110. The conveying assembly 300 includes multiple support rollers 310 and a conveyor belt 320 covering them. The axis of the support rollers 310 is perpendicular to the direction of movement of the scraper chain 220, and the bearing surface of the conveyor belt 320 is lower than the bottom of the scraper trough 210, forming a material drop receiving area. The multiple support rollers 310 are rotatably mounted on the side wall of the head trough 110. The power unit 120 drives one of the support rollers 310 to rotate through the chain, thereby driving the conveyor belt 320 to operate.

[0046] Referring to Figure 3, the bottom of the head trough 110 is also provided with an inclined guide plate 114. The guide plate 114 extends from the end of the conveyor belt 320 to the outlet of the head trough 110 to guide the material to be discharged in a directional manner.

[0047] Referring to Figures 5 and 6, the transmission assembly 400 includes a mounting bracket 410, a screw assembly 500, a first gear 420, a second gear 430, a third gear 440, and a locking member 450. The mounting bracket 410 is slidably mounted on the side wall of the head groove 110 along the length of the head groove 110 via a slide rail. The screw assembly 500 includes a first screw 510, a second screw 520, a first slider 530, a second slider 540, and a third slider 550. The first screw 510 is vertically mounted in the middle of the mounting bracket 410, and the second screw 520 is horizontally mounted on the mounting bracket 410. The first gear 420 is mounted on the vertically mounted first screw 510 via the first slider 530. Rotating the first screw 510 adjusts the height of the first gear 420. Half of the second screw 520 is configured as a positive thread portion 521, and the other half is configured as a negative thread portion 522. Gear 430 is mounted on the positive thread portion 521 of the second screw 520 via the second slider 540, and third gear 440 is mounted on the negative thread portion 522 of the second screw 520 via the third slider 550. Rotating the second screw 520 allows the second gear 430 and third gear 440 to move synchronously towards or relative to each other. A support block for supporting the first screw 510 and the second screw 520 is provided in the middle of the mounting bracket 410. A through hole is provided in the middle of the support block, so that the locking member can be installed in the through hole and abut against the first screw 510 and the second screw 520. The locking member is a fastening stud. Tightening the fastening stud in the through hole will press the fastening stud against the first screw 510 and the second screw 520, thereby fixing the first screw 510 and the second screw 520 and restricting the relative position of the first gear 420, the second gear 430 and the third gear 440.

[0048] In order for the power component 120 to drive the second gear 430 to rotate, and thus drive the sprocket 230 on the scraper groove 210 to rotate, the sprocket 230 is coaxially fixedly mounted on the second gear 430. The sprocket 230 on the second gear 430 is connected to the sprocket 230 on the output shaft of the power component 120 via chain drive. During use, the positions of the mounting bracket 410 and the second gear 430 are adjusted so that the sprocket 230 on the second gear 430 and the sprocket 230 on the power component 120 cooperate to tension the chain. Then, the third gear 440 is adjusted... The position is adjusted so that the third gear 440 is coaxial with the sprocket 230 on the scraper groove 210, and a splined shaft is inserted so that the third gear 440 can drive the sprocket 230 to rotate. Finally, the height of the first gear 420 is adjusted so that the first gear 420 and the second gear 430 and the third gear 440 are engaged at the same time. Thus, when the power component 120 drives the second gear 430 to rotate through the chain, the second gear 430 can drive the third gear 440 to rotate through the first gear 420, thereby driving the sprocket 230 on the scraper groove 210 to rotate.

[0049] The implementation principle of a combined scraper conveyor according to this utility model embodiment is as follows: During assembly, several scraper grooves 210 are spliced ​​together by connecting flanges 213 according to the required conveying length. Then, the guide rail groove 111 of the head groove 110 is aligned with the guide rail 211 of the end scraper groove 210. When fine-tuning of the length is required, the head groove 110 is slid to the target position. After determining the relative position of the guide rail groove 111 and the head groove 110, positioning bolts 113 are inserted into the first positioning hole 212 and the second positioning hole 112 to fix the position of the head groove 110 and the scraper groove 210. Then, the first screw 510 and the second screw 520 are rotated to link the two screws. After adjusting the height of the first gear 420 and the distance between the second gear 430 and the third gear 440 to ensure good meshing of the transmission assembly 400, the locking member 450 is locked. When the power component 120 rotates, it can drive the sprocket 230 in the scraper trough 210 and the support roller 310 in the head trough 110 to rotate. After the material is conveyed to the head trough 110 by the scraper chain 220, it falls into the conveyor belt 320 due to gravity and slides out along the guide plate 114 under the drive of the support roller 310. When the head trough 110 extends and retracts, the mounting frame 410 slides synchronously with it. The transmission assembly 400 maintains power transmission through adaptive adjustment of gear position, realizing stepless adjustment of the conveying length.

[0050] In summary, this application, by employing a retractable head unit 100 structure and adjusting the extension and retraction of the head trough 110, allows for more precise stepless adjustment of the overall length of the scraper conveyor, enabling more accurate control of the material conveying distance. Through three interconnected gear structures and a screw assembly 500, the transmission assembly 400 automatically maintains gear meshing during head extension and retraction, ensuring both adaptability to changes in the head trough 110's position and continuous, stable power transmission. The low-profile layout of the scraper trough 210 and conveyor belt 320, combined with the guide plate 114, optimizes the material transition process, reduces material transfer losses, and balances structural strength with functionality and ease of maintenance.

[0051] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made according to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A combined scraper conveyor, characterized in that, include: The machine head unit (100) and the machine body unit (200) include a plurality of scraper grooves (210) and a scraper chain (220). The plurality of scraper grooves (210) are spliced ​​and fixed end to end. A sprocket (230) is rotatably arranged inside each of the plurality of scraper grooves (210). The scraper chain (220) is driven on the sprocket (230). The machine head unit (100) includes a head groove (110), a power component (120), and a conveying assembly (300). The power component (110) is a head groove (110), a power component (120), and a conveying assembly (300). 120) is fixedly disposed outside the head groove (110), the conveying assembly (300) is disposed inside the head groove (110), and the power component (120) is connected to the conveying assembly (300) in a transmission connection; the head groove (110) is disposed on the scraper groove (210) at the end position, the head groove (110) is extended and retracted along the length direction of the scraper groove (210), and the power component (120) is connected to the sprocket (210) in a transmission connection through the transmission assembly (400).

2. The combined scraper conveyor according to claim 1, characterized in that: The transmission assembly (400) includes a mounting bracket (410), a first gear (420), a second gear (430), a third gear (440), and a locking member (450). The first gear (420) is slidably disposed in the middle of the mounting bracket (410) in the vertical direction. The second gear (430) and the third gear (440) are symmetrically disposed on both sides of the first gear (420). The second gear (430) and the third gear (440) are both slidably disposed on the mounting bracket (410) in the horizontal direction. The locking member (450) is used to fix the first gear (420), the second gear (430), and the third gear (440) on the mounting bracket (410). The second gear (430) is connected to the power component (120) in a transmission connection. The third gear (440) is connected to the scraper chain (220) in a transmission connection. The first gear (420) meshes with the second gear (430) and the third gear (440) respectively.

3. A combined scraper conveyor according to claim 2, characterized in that: The mounting bracket (410) is also provided with a screw assembly (500), which includes a first screw (510), a second screw (520), a first slider (530), a second slider (540), and a third slider (550). The first screw (510) is rotatably disposed in the middle of the mounting bracket (410) in the vertical direction. The first slider (530) is configured to cooperate with the first screw (510). The first gear (420) is rotatably disposed on the first slider (530). The second screw (520) rotates along the length direction of the head groove (110). The second screw (520) is mounted on the mounting bracket (410) and includes a positive thread portion (521) and a negative thread portion (522) disposed opposite to each other. The positive thread portion (521) and the negative thread portion (522) are respectively disposed at both ends of the second screw (520). The second slider (540) is configured to cooperate with the positive thread portion (521). The second gear (430) is rotatably disposed on the second slider (540). The third slider (550) is configured to cooperate with the negative thread portion (522). The third gear (440) is rotatably disposed on the third slider (550).

4. A combined scraper conveyor according to claim 3, characterized in that: The mounting bracket (410) is slidably disposed on the head groove (110) along the length direction of the head groove (110).

5. A combined scraper conveyor according to any one of claims 1-4, characterized in that: The conveying assembly (300) is disposed at the bottom of the head groove (110), and the position of the conveying assembly (300) is lower than the bottom of the scraper groove (210). The conveying assembly (300) includes a plurality of support rollers (310) and a conveyor belt (320). The plurality of support rollers (310) are rotatably disposed in the head groove (110), and the conveyor belt (320) covers the outside of the plurality of support rollers (310). The support rollers (310) are connected to the power component (120) for transmission.

6. A combined scraper conveyor according to claim 5, characterized in that: A guide plate (114) is provided at the bottom of the head trough (110). The guide plate (114) is located below the conveyor belt (320) and extends to the outlet position of the head trough (110).

7. A combined scraper conveyor according to any one of claims 1-4, characterized in that: The outer end face of the scraper groove (210) is provided with a guide rail (211), which is arranged along the length direction of the scraper groove (210). The inner end face of the head groove (110) is provided with a guide rail groove (111), which is arranged along the length direction of the head groove (110). The guide rail (211) is slidably arranged in the guide rail groove (111). The guide rail (211) is provided with a plurality of first positioning holes (212) along the length direction. The guide rail groove (111) is provided with a second positioning hole (112). The corresponding first positioning hole (212) and the second positioning hole (112) are provided with positioning bolts (113).

8. A combined scraper conveyor according to claim 7, characterized in that: The scraper groove (210) is provided with connecting flanges (213) at both ends, and adjacent scraper grooves (210) are fixedly connected through the connecting flanges (213).

9. A combined scraper conveyor according to claim 8, characterized in that: The connecting flange (213) is provided with a notch (214), which is located on both sides of the guide rail (211).

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