Sprocket shaft group capable of being disassembled quickly

Abstract

The utility model relates to the technical field of chain wheel shafts, in particular to a quickly-detachable chain wheel shaft set which comprises a spline shaft, a rotating mechanism is installed on the spline shaft and comprises bearing seats, and the two ends of the spline shaft are rotationally connected with the bearing seats through bearings respectively. A lower chain wheel and an upper chain wheel which are symmetrical are connected to the outer side of the spline shaft in a buckled mode, the upper chain wheel and the lower chain wheel are connected in a buckled mode through a plurality of bolts, and a lubricating mechanism is installed on the spline shaft. And the chain wheel body can be rapidly disassembled, replacement and maintenance are convenient, operation is convenient and fast, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a sprocket shaft assembly, specifically a quick-release sprocket shaft assembly, and belongs to the field of sprocket shaft technology. Background Technology

[0002] Scraper conveyors are important conveying equipment in fully mechanized coal mining faces and occupy a key position in the coal mining machinery market. Among them, the sprocket shaft assembly is the core component that drives the chain of the scraper conveyor to transport coal. It plays a vital role in the implementation mechanism of the scraper conveyor system, and the service life of the sprocket shaft assembly directly affects the performance of the scraper conveyor.

[0003] However, the main damage to sprocket shaft assemblies is that the sprocket body is not wear-resistant, teeth are broken, and oil leaks occur. When a sprocket shaft assembly fails, for traditional sprocket shaft assemblies, replacement requires stopping the machine, disassembling the entire transmission device, replacing the new integral sprocket shaft assembly, and transporting the disassembled shaft assembly to the well to replace the sprocket body. This poses certain safety risks, increases the labor intensity for workers, and affects production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a quick-release sprocket shaft assembly to solve the above problems. This assembly allows for rapid disassembly of the sprocket body, facilitating replacement and maintenance, and improving efficiency through convenient operation.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a quick-release sprocket shaft assembly, including a spline shaft, a rotating mechanism mounted on the spline shaft, the rotating mechanism including a bearing seat, bearing seats rotatably connected to both ends of the spline shaft via bearings, a symmetrical lower sprocket and an upper sprocket fastened to the outer side of the spline shaft respectively, the upper sprocket and the lower sprocket being fastened together by multiple bolts, and a lubrication mechanism mounted on the spline shaft.

[0006] Preferably, two limit keys are installed on the outer side of the spline shaft, and keyways are respectively provided at the center of the inner side of the upper sprocket and the lower sprocket, and the keyways engage with the limit keys.

[0007] Preferably, the upper sprocket and the lower sprocket are provided with multiple mounting grooves on their outer edges, and multiple bolts are located inside the mounting grooves.

[0008] Preferably, the mounting groove has an "L" shaped structure, and one end of the spline shaft extends to the outside of one of the bearing seats.

[0009] Preferably, the spline shaft is a stepped shaft, and positioning sleeves are installed at both ends of the spline shaft, with the positioning sleeves abutting against the ends of the upper and lower sprockets.

[0010] Preferably, each of the two bearing housings has a pressure cap detachably connected to its outer end, and each of the two bearing housings has an oil seal installed inside.

[0011] Preferably, each of the two bearing housings has a floating seal ring installed inside, and the floating seal ring is connected to the splined shaft.

[0012] Preferably, the lubrication mechanism includes an oil guide groove, an oil guide groove is provided at the center of the inside of the spline shaft, one end of the oil guide groove extends to the outside of the spline shaft, a plurality of oil guide holes are provided inside both ends of the spline shaft, one end of the oil guide hole extends to the outside of the spline shaft, and the other end of the oil guide hole is connected to the oil guide groove.

[0013] Preferably, one end of the splined shaft is threaded with a sealing plug, and the sealing plug extends into the oil guide groove.

[0014] Preferably, the upper sprocket has a groove on its side wall and a boss at the center of the lower sprocket's side wall, and the upper sprocket and the lower sprocket are engaged and connected by the groove and the boss.

[0015] The beneficial effects of this utility model are as follows: the installation of two bearing seats facilitates the rotational connection of the spline shaft, providing support and stability for the spline shaft. The extension of one end of the spline shaft to the outside facilitates connection with external drive components, enabling drive control of the spline shaft. The engagement of the upper and lower sprockets with the outside of the spline shaft, along with the cooperation of multiple bolts, ensures a firm and stable connection between the upper and lower sprockets and the spline shaft. During maintenance, the upper and lower sprockets can be separated by removing multiple bolts, facilitating maintenance. The lubrication mechanism provides lubrication. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the upper sprocket and the lower sprocket of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the bearing housing and the splined shaft of this utility model;

[0019] Figure 4 This is a schematic diagram of the slot and boss of this utility model.

[0020] In the diagram: 1. Splined shaft; 2. Rotating mechanism; 201. Bearing housing; 202. Pressure cap; 203. Upper sprocket; 204. Lower sprocket; 205. Mounting groove; 206. Bolt; 207. Keyway; 208. Limit key; 209. Bearing; 210. Positioning sleeve; 211. Oil seal; 212. Floating seal ring; 213. Slot; 214. Boss; 3. Lubrication mechanism; 301. Sealing plug; 302. Oil guide hole; 303. Oil guide groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 As shown, a quick-release sprocket shaft assembly includes a spline shaft 1, on which a rotating mechanism 2 is mounted. The rotating mechanism 2 includes a bearing seat 201. The two ends of the spline shaft 1 are rotatably connected to the bearing seat 201 via bearings 209. A symmetrical lower sprocket 204 and an upper sprocket 203 are fastened to the outer side of the spline shaft 1. The upper sprocket 203 and the lower sprocket 204 are fastened together by multiple bolts 206. A lubrication mechanism 3 is mounted on the spline shaft 1.

[0023] As a technical optimization of this utility model, two limiting keys 208 are installed on the outer side of the spline shaft 1. Keyways 207 are respectively provided at the center of the inner side of the upper sprocket 203 and the lower sprocket 204. The keyways 207 engage with the limiting keys 208. After the upper sprocket 203 and the lower sprocket 204 are engaged with the spline shaft 1, the two limiting keys 208 engage with the two keyways 207, thereby limiting the upper sprocket 203 and the feed sprocket.

[0024] As a technical optimization of this utility model, the upper sprocket 203 and the lower sprocket 204 are respectively provided with a plurality of mounting grooves 205 on their outer edges, and a plurality of bolts 206 are located inside the mounting grooves 205. The mounting grooves 205 are provided to hide the bolts 206, so that the bolts 206 will not affect the sprocket.

[0025] As a technical optimization of this utility model, the mounting groove 205 has an "L" shaped structure, and one end of the spline shaft 1 extends to the outside of one of the bearing seats 201, which facilitates the installation and removal of the bolt 206 with a wrench, and also facilitates the connection of the spline shaft 1 with an external motor for drive control.

[0026] As a technical optimization of this utility model, the spline shaft 1 is a stepped shaft, and positioning sleeves 210 are respectively installed at both ends of the spline shaft 1. The positioning sleeves 210 abut against the ends of the upper sprocket 203 and the lower sprocket 204, which is conducive to positioning the upper sprocket 203 and the lower sprocket 204, so that the upper sprocket 203 and the lower sprocket 204 are installed stably and can smoothly follow the rotation of the spline shaft 1.

[0027] As a technical optimization of this utility model, the outer sides of both ends of the two bearing seats 201 are detachably connected with pressure caps 202, and oil seals 211 are installed inside the two bearing seats 201 respectively. The installation of the pressure caps 202 is beneficial for protecting the bearings 209 from contact, and the installation of the oil seals 211 is beneficial for preventing oil leakage and coal dust ingress.

[0028] As a technical optimization of this utility model, floating seal rings 212 are respectively installed inside the two bearing seats 201. The floating seal rings 212 are connected to the spline shaft 1. The installation of the floating seal rings 212 helps to prevent dust and prevent the bearings 209 from jamming.

[0029] As a technical optimization of this utility model, the lubrication mechanism 3 includes an oil guide groove 303. The oil guide groove 303 is provided at the center of the spline shaft 1. One end of the oil guide groove 303 extends to the outside of the spline shaft 1. Multiple oil guide holes 302 are provided inside both ends of the spline shaft 1. One end of the oil guide hole 302 extends to the outside of the spline shaft 1, and the other end of the oil guide hole 302 is connected to the oil guide groove 303. The opening of the oil guide groove 303 facilitates the injection of oil into the spline shaft 1. The opening of the multiple oil guide holes 302 facilitates the entry of lubricating oil into the bearing 209 and the floating seal ring 212 for lubrication.

[0030] As a technical optimization of this utility model, a sealing plug 301 is threadedly connected to one end of the spline shaft 1. The sealing plug 301 extends into the oil guide groove 303. The installation of the sealing plug 301 helps to seal one end of the oil guide groove 303, so that the lubricating oil will not overflow after being injected.

[0031] The upper sprocket 203 has a groove 213 on its side wall, and the lower sprocket 204 has a boss 214 at the center of its side wall. The upper sprocket 203 and the lower sprocket 204 are engaged and connected by the groove 213 and the boss 214. The design of the groove 213 and the boss 214 facilitates the stability of the upper sprocket 203 and the lower sprocket 204 after engagement and also serves as a limiting function.

[0032] In use, this invention first involves installing bearing seats 201 at both ends of the splined shaft 1, respectively, with bearings 209. The splined shaft 1 and bearing seats 201 are rotatably connected. Oil seals 211, floating seal rings 212, and pressure caps 202 are installed on the two bearing seats 201 to ensure stable installation of the splined shaft 1 and bearing seats 201, preventing jamming and reduced lifespan. Then, the two bearing seats 201 are detachably installed inside the conveyor equipment. Next, the upper sprocket 203 and lower sprocket 204 are fastened to the outside of the splined shaft 1 using multiple bolts 206. The design of the slot 213 and the boss 214 facilitates the stable engagement of the upper sprocket 203 and the lower sprocket 204, and also serves as a limiting function. Finally, the scraper conveyor chain is installed to drive the scraper conveyor. During maintenance, the upper sprocket 203 and the lower sprocket 204 can be separated by removing multiple bolts 206 for easy maintenance. By removing the sealing plug 301, it is easy to add lubricating oil to the oil guide groove 303, thereby enabling the lubricating oil to lubricate the bearing 209 and the floating seal ring 212 through the oil guide hole 302, extending the service life of the equipment.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick-release sprocket shaft assembly, comprising a splined shaft (1), characterized in that: A rotating mechanism (2) is installed on the spline shaft (1). The rotating mechanism (2) includes a bearing seat (201). The two ends of the spline shaft (1) are rotatably connected to the bearing seat (201) through bearings (209). Symmetrical lower sprockets (204) and upper sprockets (203) are fastened to the outside of the spline shaft (1). The upper sprockets (203) and lower sprockets (204) are fastened to each other by multiple bolts (206). A lubrication mechanism (3) is installed on the spline shaft (1).

2. The quick-release sprocket shaft assembly according to claim 1, characterized in that: Two limiting keys (208) are installed on the outside of the spline shaft (1). The upper sprocket (203) and the lower sprocket (204) are respectively provided with keyways (207) at the center of their inner sides. The keyways (207) engage with the limiting keys (208).

3. The quick-release sprocket shaft assembly according to claim 1, characterized in that: The upper sprocket (203) and the lower sprocket (204) are respectively provided with multiple mounting grooves (205) on their outer edges, and multiple bolts (206) are located inside the mounting grooves (205).

4. A quick-release sprocket shaft assembly according to claim 3, characterized in that: The mounting groove (205) has an "L" shaped structure, and one end of the spline shaft (1) extends to the outside of one of the bearing seats (201).

5. A quick-release sprocket shaft assembly according to claim 1, characterized in that: The spline shaft (1) is a stepped shaft, and positioning sleeves (210) are installed at both ends of the spline shaft (1). The positioning sleeves (210) abut against the ends of the upper sprocket (203) and the lower sprocket (204).

6. A quick-release sprocket shaft assembly according to claim 1, characterized in that: Each of the two bearing housings (201) has a pressure cap (202) detachably connected to its outer ends, and an oil seal (211) is installed inside each of the two bearing housings (201).

7. A quick-release sprocket shaft assembly according to claim 1, characterized in that: Each of the two bearing housings (201) has a floating seal ring (212) installed inside, and the floating seal ring (212) is connected to the spline shaft (1).

8. A quick-release sprocket shaft assembly according to claim 1, characterized in that: The lubrication mechanism (3) includes an oil guide groove (303). The oil guide groove (303) is provided at the center of the spline shaft (1). One end of the oil guide groove (303) extends to the outside of the spline shaft (1). Multiple oil guide holes (302) are provided inside both ends of the spline shaft (1). One end of the oil guide hole (302) extends to the outside of the spline shaft (1), and the other end of the oil guide hole (302) is connected to the oil guide groove (303).

9. A quick-release sprocket shaft assembly according to claim 1, characterized in that: One end of the splined shaft (1) is threaded with a sealing plug (301), which extends into the oil guide groove (303).

10. A quick-release sprocket shaft assembly according to claim 1, characterized in that: The upper sprocket (203) has a groove (213) on its side wall, and the lower sprocket (204) has a boss (214) at the center of its side wall. The upper sprocket (203) and the lower sprocket (204) are engaged and connected by the groove (213) and the boss (214).

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