A chain structure of a flight chain

Abstract

The application discloses a chain structure of a scraper chain and belongs to the technical field of the scraper chain. The technical scheme is characterized by comprising a scraper and a chain structure. The chain structure comprises an outer link, a first pin shaft and a locking pin. The outer link comprises an outer sheet. The outer sheet is provided with a first pin hole corresponding to the first pin shaft. The outer sheet is provided with a boss corresponding to the first pin hole. The locking pin is provided with an end and a spline part. The first pin shaft is provided with a second pin hole corresponding to the locking pin. A first inner link is movably connected with two adjacent outer links. The first pin shaft is installed in two round holes of the first inner link. The application can improve the structural stability of the chain, prolong the service life of the scraper chain on the excavating anchor machine and the like.

Description

Technical Field

[0001] This application belongs to the field of chain technology, and in particular relates to a chain structure of a scraper chain. Background Technology

[0002] With the continuous promotion and application of rapid tunneling technology and shortwall mechanized mining technology in my country's coal mines, the types of mining, tunneling, transportation, and anchoring equipment have expanded and developed. Transportation is a crucial function in both rapid tunneling and shortwall mining systems, encompassing belt conveyors and scraper conveyors. Representative equipment such as integrated tunneling and anchoring machines, continuous coal mining machines, and tunneling machines all utilize scraper conveyors, specifically belonging to onboard short-distance heavy-duty chain drive conveying.

[0003] However, the complex process and assembly steps introduce uncertain factors that affect the service life and stability of the scraper chain, leading to premature failure. Improvements are needed to address this issue. Utility Model Content

[0004] The purpose of this application is to address the aforementioned technical problems by providing a scraper chain structure that improves the structural stability of the chain and extends the service life of the scraper chain on a roadheader.

[0005] This application provides a scraper chain structure, including a scraper and a chain structure, wherein the chain structure includes: The outer section includes an outer piece, a first pin, and a locking pin. The outer piece is provided with a first pin hole corresponding to the first pin and a boss corresponding to the first pin hole. The locking pin is provided with an end and a spline portion. The first pin is provided with a second pin hole corresponding to the locking pin. The first inner segment is movably connected to the two adjacent outer segments; The first pin is installed through two round holes in the first inner section.

[0006] The chain structure is composed of an outer section and a first inner section connected together. The first pin is inserted into the first pin hole of the outer plate, and the locking pin is inserted into the second pin hole of the first pin to restrict the outward movement of the outer plate along the axis of the first pin. The locking pin, end, and spline are integrally connected. The locking pin is inserted into the second pin hole, and there is an interference fit between the spline and the second pin hole. The spline and the second pin hole are connected by a riveting process, which makes the connection structure between the locking pin and the first pin highly stable. The boss is integrally connected to the outer plate and is placed on the outer side wall of the outer plate. The boss further improves the structural strength of the outer plate around the first pin hole and increases the service life of the outer plate. The first inner section is movably connected to the first pin, and the outer plate is placed on both sides of the first inner section. The movement of the first inner section along the axis of the first pin is restricted by the outer plate and the locking pin. The above structure can improve the structural strength of the chain structure and increase its service life.

[0007] Furthermore, the chain structure also includes: The second inner section is placed between the adjacent outer section and the scraper. The second pin connects the second inner section to the scraper.

[0008] The second inner section is used to connect the outer section and the scraper. The second inner section and the scraper are connected by the second pin. The second pin is movably connected to the second inner section and the scraper. After the second pin, the second inner section and the scraper are installed, the two ends of the second pin are riveted to make the connection between the second pin, the second inner section and the scraper stable and to prevent the second pin, the second inner section and the scraper from separating.

[0009] Furthermore, the outer sheet includes: The limiting groove is located in the middle of the boss and corresponds to the locking pin.

[0010] The limiting groove is placed in the middle of the boss. The position of the locking pin and the second pin hole after installation corresponds to the limiting groove. The structure of the limiting groove and the end of the locking pin can restrict the outer piece from rotating around the axis of the first pin shaft, further improving the structural stability of the outer section. In addition, the limiting groove allows the two sides of the locking pin to be protected by the boss, improving the connection stability between the locking pin and the first pin shaft, and further improving the service life of the chain structure.

[0011] Furthermore, the first inner section includes: There are two circular third pin holes, which are adapted to the first pin. The first arc-shaped surface is placed on the outer wall surface of the first inner section.

[0012] The axes of the two third pin holes on the first inner section are parallel to each other. The first pin is inserted into the third pin hole, and there is a clearance fit between the first pin and the third pin hole, so that the first inner section can move with the axis of the first pin. The first arc-shaped surface is placed on the outer wall of the first inner section to reduce the amount of material used in the first inner section and ensure the structural strength of the first inner section.

[0013] Furthermore, the first inner section also includes: The first flange is located on both sides of the first inner section along the axial direction of the third pin hole.

[0014] The first flange is integrally connected to the first inner section. When the first inner section and the outer piece move relative to each other, the stability between the first inner section and the outer piece is improved by the first flange.

[0015] Furthermore, the second inner section includes: The fourth pin hole is circular and is adapted to the first pin. The fifth pin hole is waist-shaped and is adapted to the second pin. The second arc-shaped surface is placed on the outer wall surface of the second inner section.

[0016] The axis of the fourth pin hole is parallel to the axis of the fifth pin hole. The fourth pin hole is used to install the first pin shaft, and there is a clearance fit between the fourth pin hole and the first pin shaft. The fifth pin hole is used to install the second pin shaft. The fifth pin hole facilitates the movable connection between the scraper and the second inner section, making the connection between the scraper and the second inner section non-rigid, improving the scraper's adaptability to movement deviation, buffering impact and protecting the chain structure. The second arc-shaped surface is placed on the outer wall of the second inner section to reduce the material usage of the second inner section and ensure the structural strength of the second inner section.

[0017] Furthermore, the second inner section includes: The second flange is located on the second inner section and on both sides along the axial direction of the fourth pin hole.

[0018] The second flange is integrally connected to the second inner section. When the second inner section and the scraper move relative to each other, the second flange improves the stability when the second inner section and the scraper are in contact.

[0019] Furthermore, the scraper includes: The sixth pin hole is adapted to the second pin.

[0020] The second pin and the sixth pin hole are fitted with a clearance fit. The second pin is inserted into the sixth pin hole. After the second pin is installed in the sixth pin hole, the end of the second pin is riveted and the scraper is installed on the second pin.

[0021] The beneficial effects of this application are: 1. The chain structure is composed of outer sections, outer plates, a first pin, and a locking pin, which makes the installation structure stable.

[0022] 2. The boss increases the structural strength of the outer sheet around the first pin hole, thereby improving the service life of the outer sheet.

[0023] 3. The limiting groove allows the locking pin to be protected by the boss on both sides, improving the connection stability between the locking pin and the first pin shaft, and further improving the service life of the chain structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the scraper chain in this application; Figure 2 This is a schematic diagram of the structure of the outer section of this application; Figure 3 This is a schematic diagram of the structure of the first inner section of this application; Figure 4 This is a schematic diagram of the structure of the second inner section of this application; In the attached figures, the following labels are used: 100, scraper; 110, sixth pin hole; 200, chain structure; 210, outer section; 220, first inner section; 221, third pin hole; 222, first arc-shaped surface; 223, first flange; 230, outer piece; 231, first pin hole; 232, boss; 233, limiting groove; 240, first pin shaft; 241, second pin hole; 250, locking pin; 251, end; 252, spline part; 300, second inner section; 310, fourth pin hole; 320, fifth pin hole; 330, second arc-shaped surface; 340, second flange; 400, second pin shaft. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0028] Example 1: like Figures 1-3 As shown in the figure, this application embodiment provides a scraper chain structure, including a scraper 100 and a chain structure 200, wherein the chain structure 200 includes: The outer section 210 includes an outer plate 230, a first pin 240, and a locking pin 250. The outer plate 230 is provided with a first pin hole 231 corresponding to the first pin 240 and a boss 232 corresponding to the first pin hole 231. The locking pin 250 is provided with an end 251 and a spline portion 252. The first pin 240 is provided with a second pin hole 241 corresponding to the locking pin 250. The first inner segment 220 is movably connected to the two adjacent outer segments 210; The first pin 240 is installed through two round holes in the first inner section 220.

[0029] The chain structure 200 is composed of an outer section 210 and a first inner section 220 connected together. A first pin 240 is inserted into the first pin hole 231 of the outer piece 230, and a locking pin 250 is inserted into the second pin hole 241 of the first pin 240 to restrict the outer piece 230 from moving outward along the axis of the first pin 240. The locking pin 250, its end 251, and its spline portion 252 are integrally connected. The locking pin 250 is inserted into the second pin hole 241, and the spline portion 252 and the second pin hole 241 are interference-fitted. The spline portion 252 and the second pin hole 241 are connected by a riveting process, thus securing the locking pin 250 to the first pin 240. The connection structure has high stability. The boss 232 is integrally connected with the outer piece 230. The boss 232 is placed on the outer side wall of the outer piece 230. The boss 232 further improves the structural strength of the outer piece 230 around the first pin hole 231 and increases the service life of the outer piece 230. The first inner section 220 is movably connected with the first pin shaft 240. The outer piece 230 is placed on both sides of the first inner section 220. The movement of the first inner section 220 along the axial direction of the first pin shaft 240 is restricted by the outer piece 230 and the locking pin 250. The above structure can improve the structural strength of the chain structure 200 and increase the service life of the chain structure 200.

[0030] Furthermore, the outer sheet 230 includes: The limiting groove 233 is located in the middle of the boss 232 and corresponds to the locking pin 250.

[0031] The limiting groove 233 is located in the middle of the boss 232. The position of the locking pin 250 and the second pin hole 241 after installation corresponds to the limiting groove 233. The structure of the limiting groove 233 and the end 251 of the locking pin 250 can restrict the outer piece 230 from rotating around the axis of the first pin shaft 240, further improving the structural stability of the outer section 210. In addition, the limiting groove 233 allows the two sides of the locking pin 250 to be protected by the boss 232, improving the connection stability between the locking pin 250 and the first pin shaft 240, and further improving the service life of the chain structure 200.

[0032] Furthermore, the first inner section 220 includes: There are two circular third pin holes 221, and the third pin holes 221 are adapted to the first pin 240. The first arc-shaped surface 222 is placed on the outer wall surface of the first inner section 220.

[0033] The axes of the two third pin holes 221 on the first inner section 220 are parallel to each other. The first pin 240 is inserted into the third pin hole 221. The first pin 240 and the third pin hole 221 are clearance-fitted, so that the first inner section 220 can move with the axis of the first pin 240. The first arc-shaped surface 222 is placed on the outer side wall of the first inner section 220 to reduce the material usage of the first inner section 220 and ensure the structural strength of the first inner section 220.

[0034] Furthermore, the first inner section 220 also includes: The first flange 223 is placed on the first inner section 220 and on both sides along the axial direction of the third pin hole 221.

[0035] The first flange 223 is integrally connected to the first inner section 220. When the first inner section 220 and the outer piece 230 move relative to each other, the stability of the first inner section 220 and the outer piece 230 when they come into contact is improved by the first flange 223.

[0036] Example 2: like Figure 1 , Figure 4 As shown, this application embodiment provides a scraper chain structure, which, in addition to the above-mentioned technical features, further includes: The second inner section 300 is placed between the adjacent outer section 210 and the scraper 100; The second pin 400 is connected between the second inner section 300 and the scraper 100.

[0037] The second inner section 300 is used to connect the outer section 210 and the scraper 100. The second inner section 300 and the scraper 100 are connected by the second pin 400. The second pin 400 is movably connected to the second inner section 300 and the scraper 100. After the second pin 400, the second inner section 300 and the scraper 100 are installed, the two ends 251 of the second pin 400 are riveted to make the connection of the second pin 400, the second inner section 300 and the scraper 100 stable and to prevent the second pin 400, the second inner section 300 and the scraper 100 from separating.

[0038] Furthermore, the second inner section 300 includes: The fourth pin hole 310 is circular and is adapted to the first pin 240; The fifth pin hole 320 is waist-shaped and is adapted to the second pin 400; The second arc-shaped surface 330 is placed on the outer wall surface of the second inner section 300.

[0039] The axis of the fourth pin hole 310 is parallel to the axis of the fifth pin hole 320. The fourth pin hole 310 is used to install the first pin 240, and there is a clearance fit between the fourth pin hole 310 and the first pin 240. The fifth pin hole 320 is used to install the second pin 400. The fifth pin hole 320 facilitates the movable connection between the scraper 100 and the second inner section 300, making the connection between the scraper 100 and the second inner section 300 non-rigid, improving the adaptability of the scraper 100 to the movement deviation, and buffering the impact and protecting the chain structure 200. The second arc-shaped surface 330 is placed on the outer side wall of the second inner section 300 to reduce the material usage of the second inner section 300 and ensure the structural strength of the second inner section 300.

[0040] Furthermore, the second inner section 300 includes: The second flange 340 is placed on the second inner section 300 and on both sides along the axial direction of the fourth pin hole 310.

[0041] The second flange 340 is integrally connected to the second inner section 300. When the second inner section 300 and the scraper 100 move relative to each other, the stability of the second inner section 300 and the scraper 100 when they come into contact is improved by the second flange 340.

[0042] Example 3: like Figure 1 As shown, this application embodiment provides a scraper chain structure, which, in addition to including the above-mentioned technical features, further includes the scraper 100 comprising: The sixth pin hole 110 is adapted to the second pin 400.

[0043] The second pin 400 and the sixth pin hole 110 are fitted with a clearance. The second pin 400 is inserted into the sixth pin hole 110. After the second pin 400 is installed in the sixth pin hole 110, the end 251 of the second pin 400 is riveted and the scraper 100 is installed on the second pin 400.

[0044] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A scraper chain structure, comprising a scraper (100) and a chain structure (200), characterized in that, The chain structure (200) includes: The outer section (210) includes an outer plate (230), a first pin (240), and a locking pin (250). The outer plate (230) is provided with a first pin hole (231) corresponding to the first pin (240), and the outer plate (230) is provided with a boss (232) corresponding to the first pin hole (231). The locking pin (250) is provided with an end (251) and a spline portion (252). The first pin (240) is provided with a second pin hole (241) corresponding to the locking pin (250). The first inner segment (220) is movably connected to the two adjacent outer segments (210).

2. The chain structure of the scraper chain according to claim 1, characterized in that, The chain structure (200) also includes: The second inner section (300) is placed between the adjacent outer section (210) and the scraper (100); The second pin (400) is connected between the second inner section (300) and the scraper (100).

3. The chain structure of the scraper chain according to claim 1, characterized in that, The outer sheet (230) includes: The limiting groove (233) is placed in the middle of the boss (232) and corresponds to the locking pin (250).

4. The chain structure of the scraper chain according to claim 1, characterized in that, The first inner section (220) includes: There are two third pin holes (221), which are circular, and the third pin holes (221) are adapted to the first pin (240); The first arc-shaped surface (222) is placed on the outer wall surface of the first inner section (220).

5. The chain structure of the scraper chain according to claim 4, characterized in that, The first inner section (220) also includes: The first flange (223) is placed on the first inner section (220) and on both sides along the axial direction of the third pin hole (221).

6. The chain structure of the scraper chain according to claim 2, characterized in that, The second inner section (300) includes: The fourth pin hole (310) is circular and is adapted to the first pin (240); The fifth pin hole (320) is waist-shaped and is adapted to the second pin (400); The second arc-shaped surface (330) is placed on the outer wall surface of the second inner section (300).

7. The chain structure of the scraper chain according to claim 6, characterized in that, The second inner section (300) includes: The second flange (340) is placed on the second inner section (300) and on both sides along the axial direction of the fourth pin hole (310).

8. The chain structure of the scraper chain according to claim 2, characterized in that, The scraper (100) includes: The sixth pin hole (110) is adapted to the second pin (400).

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