A scraper conveyor with an improved chute structure

Abstract

This utility model discloses a scraper conveying device with an improved chute structure, relating to the technical field of scraper conveyors. The scraper conveying device with the improved chute structure includes a support frame, above which a conveying mechanism is arranged for conveying materials. The conveying mechanism includes a limiting component, comprising a base plate fixedly installed above the support frame, a support plate fitted inside the base plate, a limiting cover fixedly installed above the base plate, a limiting rod fixedly installed inside the limiting cover, and a limiting wheel movably installed at the center of the limiting rod. The support plate is made of metal with a chrome-plated upper surface. This material characteristic and surface treatment process significantly reduce the coefficient of friction between the scraper bottom and the support plate, preventing severe wear of the scraper bottom due to long-term sliding friction and the formation of gaps between it and the support plate. Furthermore, the support plate is bolted on, allowing for replacement after the surface coating wears down.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, specifically a scraper conveyor device with an improved chute structure. Background Technology

[0002] Scraper conveyors are continuous conveying equipment that uses scraper chains as traction components and a central trough as a load-bearing component. They are widely used in industries such as mining, coal, metallurgy, chemicals, and building materials. Their core function is to achieve continuous, efficient, and directional conveying of bulk materials.

[0003] The existing utility model patent with publication number CN212557988U discloses a scraper conveyor, including a machine body, a drive mechanism, a transmission mechanism, a scraping mechanism, and a tensioning mechanism. The tensioning mechanism includes a set of turbine housings and a turbine housing. The turbine housing contains a worm gear and a worm, which mesh with the worm. The worm gear is keyed to a hollow turbine shaft, which is located on both sides of the tail and meshes with a lead screw. The lead screw is fixedly connected to a traction seat, which is connected to a movable sealed bearing seat via a connecting pin. The movable sealed bearing seats are respectively fitted with guide grooves located on both sides of the tail. The two ends of the driven shaft are respectively mounted on the movable sealed bearing seats. This scraper conveyor features a rational layout of the tensioning mechanism, with a worm gear added at the tail for tensioning. This makes the tensioning mechanism simpler and less labor-intensive, with more reasonable force distribution than traditional tensioning structures, facilitating chain tensioning operations and enabling tension adjustment without stopping the machine. It also reduces maintenance difficulty, makes it easier to replace worn parts, and facilitates maintenance and repair work, saving time and effort.

[0004] The aforementioned scraper conveyor uses chain limit blocks to prevent the chain from shifting to the side wall, but this cannot solve the problem of "chain drifting" in the vertical direction. When the chain has a large amount of slack, it may lift up and break away from the limit block. The limit block is easily worn due to long-term friction from the chain, which leads to the gradual failure of the limiting function. In addition, the bottom of the scraper contacts the chute structure during operation, and wear will occur between the scraper and the chute, which will increase the gap between the bottom of the scraper and the chute, and thus cause the scraper to get stuck due to material. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a scraper conveying device with an improved chute structure, which solves the problems of scraper wear and poor scraper limiting effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A scraper conveying device with an improved chute structure includes a support frame, and a conveying mechanism is arranged above the support frame for conveying materials. The conveying mechanism includes:

[0007] The limiting assembly includes a base plate fixedly installed above a support frame, a support plate fitted inside the base plate, a limiting cover fixedly installed above the base plate, a limiting rod fixedly installed inside the limiting cover, a limiting wheel movably installed at the center of the limiting rod, an adjusting ring movably installed at the top of the limiting cover, a movable tube fixedly installed below the adjusting ring, a limiting frame inserted below the movable tube, and a compression spring sleeved above the limiting frame.

[0008] The drive components are located on both sides of the limit components to drive the material movement.

[0009] Preferably, the drive assembly includes an inlet pipe disposed at the rear end of the limiting assembly and an outlet pipe disposed at the front end of the limiting assembly. A connecting shaft is inserted and installed inside the inlet pipe and the outlet pipe. A toothed disc is fixedly installed at the center of the connecting shaft. A scraper is fitted and installed on the outer side of the toothed disc. A drive motor is fixedly installed above the outlet pipe. A synchronous pulley is fixedly installed on the outer side of the drive motor shaft and the outer side of the connecting shaft. A synchronous belt is sleeved on the outer side of the synchronous pulley.

[0010] Preferably, the base plate has protruding structures on both sides that fit into the bottom end of the limiting cover. The limiting cover and the base plate are connected by bolts. The limiting wheel is installed on the upper and lower sides of the limiting cover by a limiting rod. The limiting wheel and the limiting rod are rotatably connected. The outer side of the movable tube is provided with a threaded structure. The movable tube is movably connected to the limiting cover by the threaded structure.

[0011] Preferably, the limiting frame has rod-shaped structures on both sides that are slidably connected to the limiting cover, and a cylindrical protrusion inserted into the movable tube is provided at the center of the limiting frame, and the limiting frame and the movable tube are slidably connected.

[0012] Preferably, the feed pipe has an opening structure at the top and the discharge pipe has an opening structure at the bottom. The feed pipe and the discharge pipe are fixedly connected to the corresponding limiting cover by bolts.

[0013] Preferably, the connecting shaft is rotatably connected to the inlet pipe and the outlet pipe, the scrapers are connected by a pin, the scrapers are fitted into one side of the limiting wheel, and the bottom of the scraper is in contact with the support plate.

[0014] Beneficial effects

[0015] This invention provides a scraper conveying device with an improved chute structure. Compared with the prior art, it has the following advantages:

[0016] (1) The scraper conveying device with the improved chute structure has a metal pallet with a chrome-plated upper surface. The material properties and surface treatment process significantly reduce the friction coefficient between the bottom of the scraper and the pallet, avoiding severe wear caused by long-term sliding friction at the bottom of the scraper and the gap between the scraper and the pallet. The pallet is installed with bolts and can be replaced after the surface coating is worn out. On the other hand, when the scraper moves, the limiting wheel inside the limiting cover contacts the side of the scraper. The limiting wheel is connected to the limiting rod by rotation, which converts the sliding friction between the scraper and the limiting structure into rolling friction, significantly reducing the friction loss on the side of the scraper. At the same time, the horizontal part below the annular structure formed by the scraper is always in stable contact with the pallet under the restriction of the limiting wheel, avoiding concentrated wear caused by scraper shaking or excessive local pressure, and further extending the service life of the scraper.

[0017] (2) The scraper conveying device with the improved chute structure improves the limiting effect through the combination of horizontal and vertical limiting: In the horizontal limiting, the limiting wheels on the upper and lower sides inside the limiting cover contact the sides of the scraper respectively, and the limiting wheel structure can be embedded in the corresponding position of the scraper, which firmly restricts the offset trajectory of the scraper in the horizontal direction and prevents the scraper from deviating to the side wall; In the vertical limiting, the movable tube can be rotated by rotating the adjusting ring, and the position of the bottom end of the movable tube can be adjusted by the threaded connection between the movable tube and the limiting cover, thereby changing the compression state of the lower spring. The lower spring applies a downward elastic force to the limiting frame, so that the limiting wheel at the bottom of the limiting frame is pressed tightly on the scraper, while the limiting wheel on the limiting rod is supported below the scraper. The upper and lower sets of limiting wheels form a vertical clamping force on the scraper, which effectively avoids the scraper from "floating" vertically and detaching from the limiting structure; At the same time, the limiting wheel can roll synchronously during the movement of the scraper to reduce the friction between it and the scraper, and avoid wear affecting the limiting effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the limiting wheel of this utility model;

[0020] Figure 3 This is a schematic diagram of the drive motor mounting structure of this utility model;

[0021] Figure 4 This is a schematic diagram showing the position and structure of the scraper and the limiting wheel of this utility model;

[0022] In the diagram: 1. Support frame; 2. Conveying mechanism; 21. Limiting component; 211. Base plate; 212. Support plate; 213. Limiting cover; 214. Limiting rod; 215. Limiting wheel; 216. Adjusting ring; 217. Movable tube; 218. Limiting frame; 219. Downward pressure spring; 22. Drive assembly; 221. Feed pipe; 222. Discharge pipe; 223. Connecting shaft; 224. Gear plate; 225. Scraper; 226. Drive motor; 227. Synchronous pulley; 228. Synchronous belt. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a scraper conveying device with an improved chute structure includes a support frame 1, and a conveying mechanism 2 is arranged above the support frame 1 for conveying materials. The conveying mechanism 2 includes a limiting component 21, including a base plate 211 fixedly installed above the support frame 1, a support plate 212 fitted inside the base plate 211, a limiting cover 213 fixedly installed above the base plate 211, a limiting rod 214 fixedly installed inside the limiting cover 213, a limiting wheel 215 movably installed at the center of the limiting rod 214, an adjusting ring 216 movably installed at the top of the limiting cover 213, a movable tube 217 fixedly installed below the adjusting ring 216, and a limiting frame 218 inserted below the movable tube 217. A compression spring 219 is fitted on the top of 218. The bottom plate 211 has protruding structures on both sides that fit into the bottom of the limiting cover 213. The limiting cover 213 and the bottom plate 211 are connected by bolts. The limiting wheel 215 is installed on the upper and lower sides of the limiting cover 213 through the limiting rod 214. The limiting wheel 215 and the limiting rod 214 form a rotatable connection. The outer side of the movable tube 217 is provided with a threaded structure. The movable tube 217 is movably connected to the limiting cover 213 through the threaded structure. The limiting frame 218 has rod-shaped structures on both sides that form a sliding connection with the limiting cover 213. The center of the limiting frame 218 is provided with a cylindrical protrusion that passes through the movable tube 217. The limiting frame 218 and the movable tube 217 form a sliding connection.

[0025] Specifically, the bottom of the pallet 212 is fixedly connected to the base plate 211 by bolts. The pallet 212 is made of metal with a chrome-plated upper surface to reduce friction with the bottom of the scraper 225. The limiting cover 213 and the base plate 211 together form a pipe structure to restrict the position of the material. The central protrusion of the limiting wheel 215 is embedded in the center of the scraper 225, and its two sides contact the scraper 225, thus restricting the lateral position of the scraper 225. The movable tube 217 is movably connected to the limiting cover 213 through a threaded structure, and can be rotated by the adjusting ring 216. Adjust the position of the bottom end of the movable tube 217 to limit the position of the top end of the pressure spring 219. The bottom of the limiting frame 218 is also equipped with a limiting wheel 215. The limiting wheel 215 at the bottom of the limiting frame 218 is located above the scraper 225, and the limiting wheel 215 at the center of the limiting rod 214 is located below the scraper 225. The elastic force of the pressure spring 219 causes the limiting wheel 215 at the bottom of the limiting frame 218 to apply a downward force to the scraper 225, thereby limiting the vertical position of the scraper 225 and preventing the scraper 225 from separating from the limiting wheel 215 and causing it to deviate.

[0026] Drive assembly 22, disposed on both sides of limiting assembly 21, is used to drive material movement. Drive assembly 22 includes an inlet pipe 221 disposed at the rear end of limiting assembly 21 and an outlet pipe 222 disposed at the front end of limiting assembly 21. Connecting shaft 223 is inserted and installed inside the inlet pipe 221 and the outlet pipe 222. A toothed disc 224 is fixedly installed at the center of the connecting shaft 223. A scraper 225 is fitted and installed on the outer side of the toothed disc 224. A drive motor 226 is fixedly installed above the outlet pipe 222. The outer side of the shaft of drive motor 226 and the connecting shaft 225 are connected to the outlet pipe 222. A synchronous pulley 227 is fixedly installed on the outside of the shaft 223. A synchronous belt 228 is sleeved on the outside of the synchronous pulley 227. An opening structure is provided above the feed pipe 221 and an opening structure is provided at the bottom of the discharge pipe 222. The feed pipe 221 and the discharge pipe 222 are fixedly connected to the corresponding limit cover 213 by bolts. The connecting shaft 223 is rotatably connected to the feed pipe 221 and the discharge pipe 222. The scrapers 225 are connected by pins. The scrapers 225 are fitted into one side of the limit wheel 215 and the bottom of the scrapers 225 is in contact with the support plate 212.

[0027] Specifically, the scraper 225 is connected by a pin to form a ring structure, with both ends fitted onto the outer side of the toothed disc 224. The drive motor 226 drives the toothed disc 224 to rotate via the synchronous pulley 227 and synchronous belt 228, thereby moving the scraper 225 to facilitate the movement of the material. The opening structure above the feed pipe 221 facilitates the entry of material, and the opening structure at the bottom of the discharge pipe 222 facilitates the discharge of material. The bottom of the horizontal portion of the ring structure formed by the scraper 225 contacts the support plate 212, and the top contacts the limiting wheel 215 below the limiting cover 213. The limiting wheel 215 below the limiting cover 213 ensures that the scraper 225 always remains in contact with the support plate 212. Furthermore, any content not described in detail in this specification is prior art known to those skilled in the art.

[0028] During operation, the drive motor 226 above the discharge pipe 222 starts running, and the synchronous wheel 227 on the outer side of its shaft rotates accordingly. The synchronous wheel 227 drives the synchronous wheel 227 on the outer side of the connecting shaft 223 inside the discharge pipe 222 to rotate synchronously through the synchronous belt 228 sleeved on the outer side, thereby driving the connecting shaft 223 to rotate. The toothed disc 224 fixed at the center of the connecting shaft 223 rotates with the connecting shaft 223. The scrapers 225 are connected by pins to form a ring structure, which is sleeved on the outer side of the toothed disc 224. The scrapers 225 embedded on the outer side of the toothed disc 224 are driven to move. At the same time, the connecting shaft 223 and the toothed disc 224 inside the feed pipe 221 rotate synchronously under the traction of the scrapers 225. The material enters from the opening structure above the feed pipe 221 and falls into the space enclosed by the bottom plate 211 and the limiting cover 213, and falls into the space embedded inside the bottom plate 211. The material is mounted on the pallet 212; the moving scraper 225 pushes the material on the pallet 212 forward, and finally the material is discharged from the opening structure at the bottom of the discharge pipe 222; during this process, the limiting wheel 215 on the limiting rod 214 inside the limiting cover 213 contacts the lower part of the scraper 225, and the limiting wheel 215 at the bottom of the limiting frame 218 contacts the upper part of the scraper 225 under the elastic force of the spring 219 below the movable tube 217. The limiting wheels 215 on both the upper and lower sides together limit the position of the scraper 225 to prevent it from deviating. The movable tube 217 is movably connected to the limiting cover 213 through the outer thread structure. If it is necessary to adjust the limiting force, the adjusting ring 216 on the top of the limiting cover 213 can be rotated to drive the fixed movable tube 217 below to move, thereby adjusting the compression degree of the spring 219 to ensure that the scraper 225 always runs stably.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flight conveyor with improved chute structure, comprising a support frame (1), characterized in that: A conveying mechanism (2) is provided above the support frame (1) for conveying materials. The conveying mechanism (2) includes: The limiting assembly (21) includes a base plate (211) fixedly installed above the support frame (1), a support plate (212) is fitted inside the base plate (211), a limiting cover (213) is fixedly installed above the base plate (211), a limiting rod (214) is fixedly installed inside the limiting cover (213), a limiting wheel (215) is movably installed at the center of the limiting rod (214), an adjusting ring (216) is movably installed at the top of the limiting cover (213), a movable tube (217) is fixedly installed below the adjusting ring (216), a limiting frame (218) is inserted below the movable tube (217), and a compression spring (219) is sleeved above the limiting frame (218). The drive component (22) is located on both sides of the limit component (21) to drive the material to move.

2. A flight conveyor having improved chuting according to claim 1, wherein: The drive assembly (22) includes an inlet pipe (221) located at the rear end of the limiting assembly (21) and an outlet pipe (222) located at the front end of the limiting assembly (21). A connecting shaft (223) is inserted inside the inlet pipe (221) and the outlet pipe (222). A toothed disc (224) is fixedly installed at the center of the connecting shaft (223). A scraper (225) is fitted on the outer side of the toothed disc (224). A drive motor (226) is fixedly installed above the outlet pipe (222). A synchronous pulley (227) is fixedly installed on the outer side of the shaft of the drive motor (226) and the outer side of the connecting shaft (223). A synchronous belt (228) is sleeved on the outer side of the synchronous pulley (227).

3. The scraper conveying device with an improved chute structure according to claim 1, characterized in that: The base plate (211) has protruding structures on both sides that fit into the bottom of the limiting cover (213). The limiting cover (213) and the base plate (211) are connected by bolts. The limiting wheel (215) is installed on the upper and lower sides of the limiting cover (213) through the limiting rod (214). The limiting wheel (215) and the limiting rod (214) form a rotatable connection. The movable tube (217) has a threaded structure on its outer side. The movable tube (217) forms a movable connection with the limiting cover (213) through the threaded structure.

4. The scraper conveying device with an improved chute structure according to claim 1, characterized in that: The limiting frame (218) has rod-shaped structures on both sides that are slidably connected to the limiting cover (213). The center of the limiting frame (218) has a cylindrical protrusion that passes through the movable tube (217). The limiting frame (218) and the movable tube (217) are slidably connected.

5. A scraper conveying device with an improved chute structure according to claim 2, characterized in that: The feed pipe (221) has an opening structure at the top, and the discharge pipe (222) has an opening structure at the bottom. The feed pipe (221) and the discharge pipe (222) are fixedly connected to the corresponding limiting cover (213) by bolts.

6. A scraper conveying device with an improved chute structure according to claim 2, characterized in that: The connecting shaft (223) is rotatably connected to the feed pipe (221) and the discharge pipe (222). The scrapers (225) are connected by a pin. The scraper (225) is fitted into one side of the limiting wheel (215). The bottom of the scraper (225) is in contact with the support plate (212).

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