Auxiliary paving device

Abstract

The utility model provides an auxiliary paving device, which is used for assisting in loading a scraper chain assembly into a discharge chute, and comprises a fixing part arranged on one side of the discharge chute and used for fixing the auxiliary paving device, and a paving part arranged on the other side of the discharge chute and used for paving the scraper chain assembly, the limiting block is arranged on the fixing part and located above the discharging groove, the extending direction of the limiting block is perpendicular to the paving direction of the scraper chain assembly, the side, facing the discharging groove, of the limiting block is provided with a first guide face, and the distance between the first guide face and the other side of the discharging groove is gradually decreased in the paving direction. The limiting block is used for stopping the scraper chain assembly located above the discharging groove so that the scraper chain assembly can be located in the discharging groove. By means of the technical scheme, the problems that in the prior art, in the laying process of a scraper chain, the scraper needs to be manually straightened, the workload is large, and the laying efficiency of the scraper chain is low can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine auxiliary equipment, in particular to an auxiliary paving device. Background Art

[0002] A medium-sized double-chain scraper transfer machine undergoing overhaul requires a complete machine assembly and commissioning after the overhaul is complete. This commissioning involves installing the assembled scraper chain into the transfer machine. This test run allows for observation of the equipment's maintenance status. The transfer machine's scraper chain assembly is large and heavy, so the scraper chain installation is performed using a bridge crane and a chain winch.

[0003] During the scraper chain installation process, because the scrapers are wider than the trough edges of the discharge chute, the chain is evenly stressed with the zipper winch assisting the chain during the transfer machine installation. Without external force, many scrapers, after entering the trough at one end, would rest on the upper edge of the trough, preventing them from entering. This required manual manipulation or hammering to align the scraper chains and insert them into the trough. The heavy weight of the scraper assembly made it difficult to move the chain when it was stretched too tight, resulting in a heavy workload and significantly impacting the efficiency of the scraper chain installation. Utility Model Content

[0004] The utility model provides an auxiliary paving device to solve the problems in the prior art that during the scraper chain paving process, the scraper needs to be manually aligned, the workload is large, and the scraper chain paving efficiency is low.

[0005] The utility model provides an auxiliary paving device, which is used to assist in loading a scraper chain assembly into a discharge chute. The auxiliary paving device includes: a fixing portion, which is arranged on one side of the discharge chute, and the fixing portion is used to fix the auxiliary paving device; a limit block, which is arranged on the fixing portion, and the limit block is located above the discharge chute. The extension direction of the limit block is perpendicular to the paving direction of the scraper chain assembly. The limit block has a first guide surface on the side facing the discharge chute, and the distance between the first guide surface and the other side of the discharge chute gradually decreases along the paving direction. The limit block is used to stop the scraper chain assembly located above the discharge chute so that the scraper chain assembly is located in the discharge chute.

[0006] Furthermore, the auxiliary paving device also includes an adjusting part, which is arranged between the fixed part and the limit block. The adjusting part has a fixed end and a movable end that are relatively arranged. The fixed end is connected to the fixed part, and the movable end is connected to the limit block. The movable end can move relative to the fixed end to drive the limit block to move along the width direction of the discharge chute.

[0007] Furthermore, the adjusting part includes a sleeve and a telescopic rod, one end of the sleeve is connected to the limit block, one end of the telescopic rod is movably arranged in the sleeve, the other end of the telescopic rod is connected to the fixed part, the telescopic rod is movably arranged in the sleeve, and the telescopic rod can be extended and retracted relative to the sleeve along the width direction of the unloading trough.

[0008] Furthermore, the limiting block further has a second guide surface, the first guide surface and the second guide surface are located at the same end of the limiting block, and the first guide surface and the second guide surface are symmetrically arranged along the length direction of the limiting block.

[0009] Furthermore, the fixing part includes a fixing seat and a connecting plate. The fixing seat is connected to the discharge chute through fasteners to fix the auxiliary paving device on the discharge chute. The connecting plate is arranged on the fixing seat, and the limit block and the adjustment member are both arranged on the connecting plate.

[0010] Furthermore, the auxiliary paving device also includes a guide structure, which is arranged between the connecting plate and the limit block, and the guide structure can guide the moving direction of the limit block.

[0011] Furthermore, a guide groove is provided on the side of the limit block, and the guide groove extends along the width direction of the discharge chute. A corresponding guide protrusion is provided on the connecting plate, and the guide protrusion is movably provided in the guide groove. The guide protrusion and the guide groove cooperate with each other to guide the movement of the limit block. The guide protrusion and the guide groove cooperate to form a guide structure.

[0012] Furthermore, the auxiliary paving device also includes a limiting structure, which is arranged between the connecting plate and the limiting block, and the limiting structure can limit the relative displacement of the limiting block and the connecting plate.

[0013] Furthermore, a positioning column is provided at the bottom of the limit block, and a limiting groove is provided on the side of the connecting plate facing the limit block. The limiting groove extends along the width direction of the discharge chute. The positioning column is movably arranged in the limiting groove. The limiting groove cooperates with the positioning column to limit the displacement of the limit block in the paving direction. The positioning column and the limiting groove cooperate to form a limiting structure.

[0014] Furthermore, the limiting block also has a third guide surface, the third guide surface is connected to the second guide surface, and the first guide surface and the second guide surface are symmetrically arranged on both sides of the third guide surface along the width direction of the discharge chute.

[0015] By applying the technical solution of the present invention, the fixing part can make the auxiliary paving device easily integrated with other equipment, thereby improving the compatibility and scalability of the entire device. The first guide surface can stop the scraper located outside the discharge chute, and at the same time guide the forward direction of the scraper, so that the scraper on the other side of the discharge chute will continue to be pulled forward by the pull rod, and the scraper will tilt at this time, and the scraper outside the discharge chute will tilt into the discharge chute. Since the zipper lengths between adjacent scrapers are the same, as the pull rod continues to pull, the scraper will be adjusted to the correct position and paved in the discharge chute. Through the above arrangement, the auxiliary paving device can effectively guide and limit the loading position of the scraper chain assembly, so that the scraper chain assembly can be smoothly loaded into the discharge chute, which greatly reduces the workload of the operator and thereby improves the paving efficiency and safety of the scraper chain assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 The figure shows the working diagram of the auxiliary paving device provided by the present invention;

[0018] Figure 2 Shows a schematic structural diagram of the auxiliary paving device provided by the utility model;

[0019] Figure 3 Shows a schematic structural diagram of the limit block provided by the utility model;

[0020] Figure 4 Shows a schematic structural diagram of the connecting plate provided by the utility model;

[0021] Figure 5 The figure shows a structural schematic diagram of the fixing plate provided by the present utility model.

[0022] The above drawings include the following reference numerals:

[0023] 10. Fixed part;

[0024] 11. Fixed seat; 111. Fixed plate;

[0025] 1111, second through hole; 1112, mounting hole;

[0026] 112. Vertical board;

[0027] 12. Connecting plate;

[0028] 122, limit slot;

[0029] 123. First rotating member; 124. Second rotating member;

[0030] 125, baffle; 126, fixed ear plate;

[0031] 127. Stiffener plate; 128. First through hole;

[0032] 129, slider plate;

[0033] 20. Limit block;

[0034] 21. First guide surface; 22. Second guide surface;

[0035] 23. Positioning column; 24. Third guide surface;

[0036] 25. Connecting lugs; 26. Crossbeam;

[0037] 30. Adjustment parts;

[0038] 31. Sleeve; 32. Telescopic rod;

[0039] 40. Guiding structure;

[0040] 41. Guide groove; 42. Guide protrusion;

[0041] 50. Cover plate;

[0042] 01. Discharge chute; 02. Scraper chain assembly;

[0043] 03. Pull rod. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] like Figure 1As shown, an embodiment of the utility model provides an auxiliary paving device for assisting the scraper chain assembly 02 to be loaded into the discharge chute 01. The auxiliary paving device includes: a fixing portion 10 and a limit block 20. The fixing portion 10 is arranged on one side of the discharge chute 01, and the fixing portion 10 is used to fix the auxiliary paving device. The limit block 20 is arranged on the fixing portion 10, and the limit block 20 is located above the discharge chute 01. The extension direction of the limit block 20 is perpendicular to the paving direction of the scraper chain assembly 02. The limit block 20 has a first guide surface 21 on the side facing the discharge chute 01. The distance between the first guide surface 21 and the other side of the discharge chute 01 gradually decreases along the paving direction. The limit block 20 is used to stop the scraper chain assembly 02 located above the discharge chute 01, so that the scraper chain assembly 02 is located in the discharge chute 01.

[0046] Among them, the scraper chain assembly 02 consists of a zipper, a scraper and a pull rod 03. The scraper is inserted into the zipper, and the pull rod 03 drives the scraper and the zipper to move.

[0047] By applying the technical solution of the present invention, the fixing portion 10 can make the auxiliary paving device easily integrated with other equipment, thereby improving the compatibility and scalability of the entire device. The first guide surface 21 can stop the scraper located outside the discharge chute 01, and at the same time guide the forward direction of the scraper, so that the scraper on the other side located in the discharge chute 01 will continue to be pulled forward by the pull rod 03. At this time, the scraper will tilt, and the scraper located outside the discharge chute 01 will tilt into the discharge chute 01. Since the zipper lengths between adjacent scrapers are the same, as the pull rod 03 continues to pull, the scraper will be adjusted to the correct position and paved in the discharge chute 01. Through the above-mentioned arrangement, the auxiliary paving device can effectively guide and limit the loading position of the scraper chain assembly 02, so that the scraper chain assembly 02 can be smoothly loaded into the discharge chute 01, which greatly reduces the workload of the operator, thereby improving the paving efficiency and safety of the scraper chain assembly 02.

[0048] like Figure 2 As shown, the auxiliary paving device also includes an adjustment member 30, which is disposed between the fixed portion 10 and the limit block 20. The adjustment member 30 has a fixed end and a movable end disposed opposite each other. The fixed end is connected to the fixed portion 10, and the movable end is connected to the limit block 20. The movable end can move relative to the fixed end to drive the limit block 20 to move along the width of the discharge chute 01. This arrangement allows the auxiliary paving device to accommodate discharge chutes 01 of varying widths and scraper chain assemblies 02 of varying sizes, enhancing the device's versatility and adaptability.

[0049] The adjusting member 30 may be configured as an oil cylinder, a hydraulic cylinder or an electric telescopic rod.

[0050] Specifically, the adjustment member 30 includes a sleeve 31 and a telescopic rod 32. One end of the sleeve 31 is connected to the stop block 20. One end of the telescopic rod 32 is movably disposed within the sleeve 31. The other end of the telescopic rod 32 is connected to the fixed portion 10. The telescopic rod 32 is movably disposed within the sleeve 31 and can be extended and retracted relative to the sleeve 31 along the width of the discharge chute 01. This design is simple and structurally convenient for installation and removal of the adjustment assembly.

[0051] In this embodiment, two adjusting members 30 are provided, and the two adjusting members 30 are arranged side by side along the paving direction, so as to increase the driving stability of the adjusting members 30 .

[0052] In the present application, the stopper 20 further includes a second guide surface 22. The first guide surface 21 and the second guide surface 22 are located at the same end of the stopper 20, and the first guide surface 21 and the second guide surface 22 are symmetrically arranged along the length direction of the stopper 20. This arrangement allows the device to be installed on different sides of the discharge chute 01 to achieve auxiliary paving, thereby improving the applicability of the device.

[0053] like Figure 2 and Figure 3 As shown, the fixing portion 10 includes a fixing base 11 and a connecting plate 12. The fixing base 11 is connected to the discharge chute 01 via fasteners to secure the auxiliary paving device to the discharge chute 01. The connecting plate 12 is mounted on the fixing base 11, and the limit block 20 and the adjusting member 30 are both mounted on the connecting plate 12. This facilitates real-time adjustment of the installation position of the auxiliary paving device according to actual working conditions, making installation and removal of the auxiliary paving device very convenient, significantly saving time and labor costs.

[0054] In this embodiment, the fastener is a fastening screw, which is threadedly connected to the fixing seat 11. By tightening the fastening screw, the connecting plate 12 cooperates with the fastening screw to fix the auxiliary paving device on the discharge trough 01, and there is no need to drill holes on the discharge trough 01.

[0055] like Figure 2 and Figure 5 As shown, the fixing seat 11 is composed of a fixing plate 111 and a vertical plate 112. The fixing plate 111 is provided with a second through hole 1111 and a second mounting hole 1112. The fixing plate 111 cooperates with the fastening screws through the second mounting hole 1112 to fix the position of the auxiliary paving device. The connecting plate 12 is provided with a first through hole 128. The first through hole 128 and the second through hole 1111 are arranged corresponding to the vertical plate 112. The vertical plate 112 is detachably connected to the connecting plate 12 and the fixing plate 111 by bolts and the first through hole 128 and the second through hole 1111. In this way, by changing the thickness of the vertical plate 112, the fixing seat 11 can use discharge chutes 01 of different sizes, thereby improving the applicability of the auxiliary paving device.

[0056] Furthermore, the auxiliary paving device includes a guide structure 40, which is disposed between the connecting plate 12 and the limit block 20. The guide structure 40 is capable of guiding the movement direction of the limit block 20. The provision of the guide structure 40 ensures the stability of the limit block 20 during movement, avoids possible deviation when adjusting the position of the limit block 20, and ensures accurate paving of the scraper chain assembly 02 even in the presence of external vibration or impact, thereby improving the stability and reliability of the auxiliary paving device.

[0057] In the present application, the specific composition of the guide structure 40 is not limited. It can be set as a combination of a guide rail and a slider; it can also be set as a combination of a protrusion and a groove.

[0058] like Figure 4 As shown, the side of the limit block 20 is provided with a guide groove 41, which extends along the width direction of the discharge chute 01. The connecting plate 12 is correspondingly provided with a guide protrusion 42, which is movably disposed in the guide groove 41. The guide protrusion 42 and the guide groove 41 cooperate with each other to guide the movement of the limit block 20. The guide protrusion 42 and the guide groove 41 cooperate to form a guide structure 40. The above-mentioned guide structure 40 is not only simple in structure, but also convenient for disassembly and assembly.

[0059] Specifically, the guide protrusion 42 is composed of a vertical rib plate 127 and a slider plate 129. The connecting plate also has a baffle 125. The baffle 125 and the first guide surface 21 are arranged in sequence. The baffle 125 cooperates with the connecting plate to form a guide groove 41, which can also effectively prevent the limit block 20 from shaking during movement and falling out of the guide groove 41.

[0060] There are two groups of guide structures 40 , which are respectively arranged on both sides of the adjusting member 30 , so as not to interfere with the movement of the limiting block 20 .

[0061] Furthermore, the auxiliary paving device also includes a limiting structure, which is arranged between the connecting plate 12 and the limiting block 20. The limiting structure can limit the relative displacement of the limiting block 20 and the connecting plate 12. The setting of the limiting structure prevents the limiting block 20 from being moved unnecessarily with respect to the connecting plate 12 under the action of external forces, thereby ensuring the stability and reliability of the auxiliary paving, thereby ensuring the efficient operation of the scraper conveyor under complex conditions.

[0062] The limiting structure may be configured as a plug-in structure or a stop block structure.

[0063] like Figure 3As shown, a positioning post 23 is provided at the bottom of the limit block 20, and a limiting groove 122 is provided on the side of the connecting plate 12 facing the limit block 20. The limiting groove 122 extends along the width direction of the discharge chute 01. The positioning post 23 is movably provided in the limiting groove 122. The limiting groove 122 cooperates with the positioning post 23 to limit the displacement of the limit block 20 in the paving direction. The positioning post 23 cooperates with the limiting groove 122 to form a limiting structure. Through the above arrangement, not only can the position of the movable block relative to the connecting plate 12 along the paving direction be prevented, and the movable block can be prevented from tilting in the paving direction, thereby ensuring the stability of the limit block 20, but the position of the limit block 20 can also be easily adjusted, and the displacement of the movable block along the width direction of the discharge chute 01 can be limited.

[0064] like Figure 2 As shown, the stopper 20 also has a third guide surface 24, which is connected to the second guide surface 22. The first guide surface 21 and the second guide surface 22 are symmetrically arranged on either side of the third guide surface 24 along the width of the discharge chute 01. The provision of the third guide surface 24 further improves the guidance accuracy of the scraper chain assembly 02 during the loading process, ensuring smooth paving of the scraper chain assembly 02 in complex environments. Furthermore, the extension direction of the third guide surface 24 is the same as the paving direction, which allows for secondary guidance of scrapers not guided by the first guide surface 21, thus ensuring the guiding effect of the stopper 20.

[0065] like Figure 3 As shown, the limit block 20 also includes a crossbeam 26, which is arranged on the side wall of the first guide surface 21 and the second guide surface 22 away from the discharge chute 01. Two connecting ear plates 25 are arranged side by side on the crossbeam 26, and the connecting ear plates 25 are used to be hinged to the sleeve 31. Two fixed ear plates 126 are correspondingly provided on the connecting plate 12, and the fixed ear plates 126 are hinged to the telescopic rod 32 through the second rotating member 124.

[0066] like Figure 2 As shown, the paving auxiliary device further includes a cover plate 50, one end of which is rotatably connected to the connecting plate 12 via a first rotating member 123. The cover body can cover the adjusting member 30 to protect the adjusting member 30 from external collisions.

[0067] The first rotating member 123 and the second rotating member 124 are both pin components with a simple structure, which facilitates the disassembly, assembly and replacement of the adjusting member 30 .

[0068] 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 indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0070] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An auxiliary paving device, characterized in that: The auxiliary paving device is used to assist in loading the scraper chain assembly (02) into the discharge chute (01), and the auxiliary paving device comprises: A fixing portion (10) is provided on one side of the discharge chute (01), and the fixing portion (10) is used to fix the auxiliary paving device; A limit block (20) is provided on the fixing portion (10), the limit block (20) is located above the discharge trough (01), the extension direction of the limit block (20) is perpendicular to the paving direction of the scraper chain assembly (02), the limit block (20) has a first guide surface (21) on the side facing the discharge trough (01), the distance between the first guide surface (21) and the other side of the discharge trough (01) gradually decreases along the paving direction, and the limit block (20) is used to stop the scraper chain assembly (02) located above the discharge trough (01) so that the scraper chain assembly (02) is located in the discharge trough (01).

2. The auxiliary paving device according to claim 1, characterized in that: The auxiliary paving device further comprises an adjusting member (30), wherein the adjusting member (30) is arranged between the fixed portion (10) and the limit block (20), and the adjusting member (30) has a fixed end and a movable end arranged opposite to each other, wherein the fixed end is connected to the fixed portion (10), and the movable end is connected to the limit block (20), and the movable end is movable relative to the fixed end to drive the limit block (20) to move along the width direction of the discharge chute (01).

3. The auxiliary paving device according to claim 2, characterized in that: The adjusting member (30) includes a sleeve (31) and a telescopic rod (32), one end of the sleeve (31) is connected to the limit block (20), one end of the telescopic rod (32) is movably arranged in the sleeve (31), the other end of the telescopic rod (32) is connected to the fixed portion (10), the telescopic rod (32) is movably arranged in the sleeve (31), and the telescopic rod (32) can be extended and retracted relative to the sleeve (31) along the width direction of the discharge trough (01).

4. The auxiliary paving device according to claim 1, characterized in that: The limit block (20) further comprises a second guide surface (22), wherein the first guide surface (21) and the second guide surface (22) are located at the same end of the limit block (20), and the first guide surface (21) and the second guide surface (22) are symmetrically arranged along the length direction of the limit block (20).

5. The auxiliary paving device according to claim 2, characterized in that: The fixing portion (10) comprises a fixing seat (11) and a connecting plate (12); the fixing seat (11) is connected to the discharge trough (01) via a fastener so as to fix the auxiliary paving device on the discharge trough (01); the connecting plate (12) is arranged on the fixing seat (11); and the limiting block (20) and the adjusting member (30) are both arranged on the connecting plate (12).

6. The auxiliary paving device according to claim 5, characterized in that: The auxiliary paving device further comprises a guide structure (40), wherein the guide structure (40) is arranged between the connecting plate (12) and the limit block (20), and the guide structure (40) is capable of guiding the moving direction of the limit block (20).

7. The auxiliary paving device according to claim 6, characterized in that: A guide groove (41) is provided on the side of the limit block (20), and the guide groove (41) extends along the width direction of the discharge trough (01). A guide protrusion (42) is correspondingly provided on the connecting plate (12), and the guide protrusion (42) is movably provided in the guide groove (41). The guide protrusion (42) and the guide groove (41) cooperate with each other to guide the movement of the limit block (20). The guide protrusion (42) cooperates with the guide groove (41) to form the guide structure (40).

8. The auxiliary paving device according to claim 5, characterized in that: The auxiliary paving device further comprises a limiting structure, which is arranged between the connecting plate (12) and the limiting block (20), and the limiting structure is capable of limiting the relative displacement between the limiting block (20) and the connecting plate (12).

9. The auxiliary paving device according to claim 8, characterized in that: A positioning column (23) is provided at the bottom of the limiting block (20), and a limiting groove (122) is provided on one side of the connecting plate (12) toward the limiting block (20), and the limiting groove (122) extends along the width direction of the discharge trough (01). The positioning column (23) is movably provided in the limiting groove (122), and the limiting groove (122) cooperates with the positioning column (23) to limit the displacement of the limiting block (20) in the paving direction. The positioning column (23) cooperates with the limiting groove (122) to form the limiting structure.

10. The auxiliary paving device according to claim 4, characterized in that: The limit block (20) further comprises a third guide surface (24), the third guide surface (24) being connected to the second guide surface (22), and the first guide surface (21) and the second guide surface (22) being symmetrically arranged on both sides of the third guide surface (24) along the width direction of the discharge trough (01).

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