Scraper chain tension adjustment mechanism

Abstract

The utility model discloses a kind of scraper chain tension adjusting mechanism, including scraper frame, the left and right sides of scraper frame inner wall are all provided with moving groove, common installation is carried out between two moving grooves, and moving part includes two supporting blocks, the left and right sides of supporting block are all connected with baffle, the side of most left baffle and most right baffle far away is all connected with support seat.The utility model is cooperated by scraper frame, scale groove, moving part, adjusting component and moving groove, when being tensioned to scraper chain, reverse tensioning screw rod, make it rotate forward, tensioning plate follows forward at this time, utilize two connecting screw rod forward driven by tensioning plate, finally drive entire moving part forward, so that two sprocket are tensioned to scraper chain;Further by the cooperation of indicating block and scale groove, the moving amount of moving part can be accurately known, to avoid excessive movement, cause scraper chain to be pulled and broken.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, specifically to a scraper conveyor chain tension adjustment mechanism. Background Technology

[0002] Scraper conveyor series products are widely used in metallurgy, building materials, power, chemical, cement, ports, docks, coal, mining, grain and oil, food, feed and other industries and departments. A scraper conveyor is a continuous conveying device that transports bulk materials within a closed rectangular cross-section shell by means of a moving scraper chain; because the scraper chain is completely submerged in the material during transport, it is called a scraper conveyor. This machine has a simple structure, good sealing, convenient installation and maintenance, and flexible process layout; it can transport materials horizontally, as well as inclined or vertically; it can be used as a single unit or in combination; it can have multiple feeding and unloading points. Due to the enclosed shell, it can significantly improve the working environment for workers and prevent environmental pollution when conveying large, toxic, explosive, or high-temperature materials.

[0003] A search revealed patent publication number CN223015617U, entitled "A Scraper Conveyor Chain Tension Adjustment Mechanism." This mechanism includes two support plates, positioned horizontally and not in contact. Anti-slip plates are fixedly connected to the ends of the two support plates that are far apart from each other. Fixed tubes are fixedly connected to the middle of the ends of the two support plates that are close to each other. Connecting grooves are formed on the inner surfaces of both fixed tubes, and adjusting rods are threaded onto the inner surfaces of both connecting grooves. This scraper conveyor chain tension adjustment mechanism, by incorporating two adjusting devices, allows adjustment based on the looseness of the scraper conveyor chain. Rotating the adjusting head in the adjusting device causes the top support wheel in the adjusting mechanism to move downwards and contact the chain, simultaneously lifting the chain and increasing its travel path, thereby adjusting the chain tension. This prevents chain skipping and slippage caused by excessive chain length during scraper conveyor operation. However, research and analysis revealed that while it has tension adjustment functionality, it also has the following drawbacks to some extent.

[0004] For example, the scraper conveyor chains on both sides cannot be adjusted simultaneously. Adjusting the scraper conveyor chains one by one on one side easily leads to uneven tension, especially during scraper conveyor operation, which can easily cause scraper jamming or even scraper conveyor chain breakage. To solve the above technical problems, we have designed a scraper conveyor chain tension adjustment mechanism. Utility Model Content

[0005] The purpose of this utility model is to provide a scraper conveyor chain tension adjustment mechanism, which has the advantage of simultaneously adjusting the scraper conveyor chains on both sides. This solves the problem that the scraper conveyor chains on both sides cannot be adjusted simultaneously, and that adjusting the scraper conveyor chains one by one on one side can easily lead to uneven tension. Especially during the operation of the scraper conveyor, scraper jamming or even scraper chain breakage and damage can easily occur.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a scraper conveyor chain tension adjustment mechanism, comprising a scraper conveyor frame, wherein movable grooves are provided on both the left and right sides of the inner wall of the scraper conveyor frame, and a movable component is installed between the two movable grooves. The movable component includes two support blocks, and baffle plates are connected to both the left and right sides of the support blocks. Support seats are connected to the sides of the leftmost and rightmost baffle plates that are far apart from each other. A redirecting shaft is movably connected between the two support seats through a bearing. Sprockets are fixedly sleeved on both the left and right sides of the redirecting shaft. A positioning block is connected to the front side of the support seat, and a tensioning rod is connected to the front side of the positioning block. A connecting plate is fixedly connected to the front side of the tensioning rod. An adjustment component is connected to the front side of the two connecting plates. The adjustment component includes a tensioning plate, and threaded holes are provided on both the left and right sides of the rear side of the tensioning plate. A connecting screw is threadedly connected to the inner wall of the threaded hole, and the rear side of the connecting screw passes through the connecting plate.

[0007] Preferably, scale grooves are provided on both the left and right sides of the scraper frame and at the bottom of the moving groove, and indicator blocks that cooperate with the scale grooves are connected to the bottom of the leftmost and rightmost baffles.

[0008] Preferably, the opposite sides of two adjacent baffles are in sliding contact with the scraper frame, the support block is located inside the moving groove and in sliding contact with the inside of the moving groove, and the outside of the redirecting shaft is movably connected to the baffles and the support block through sealed bearings.

[0009] Preferably, the tensioning rod is externally fitted with a bearing block, and the opposite sides of the two bearing blocks are connected to the scraper frame.

[0010] Preferably, the connecting plate has a through hole for use with the connecting screw, and a threaded ring and a positioning nut are threadedly fitted on the outside of the connecting screw and on the front and rear sides of the connecting plate, respectively.

[0011] Preferably, a tensioning screw is movably connected to the front side of the tensioning plate via a bearing, a bearing plate is fitted onto the external thread of the tensioning screw, and a connecting plate is connected to the bottom of the rear side of the bearing plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, through the coordinated use of the scraper conveyor frame, scale groove, moving component, adjusting component, and moving groove, has the advantage of simultaneously adjusting the scraper conveyor chains on both sides. When tensioning the scraper conveyor chain, the tensioning screw is reversed, causing it to rotate and move forward. At this time, the tensioning plate moves forward along with it, using the tensioning plate to drive the two connecting screws forward, ultimately driving the entire moving component forward, so that the two sprockets tension the scraper conveyor chain. Furthermore, through the cooperation of the indicator block and scale groove, the amount of movement of the moving component can be accurately known, avoiding excessive movement that could damage the scraper conveyor chain. Moreover, the above adjustments can be performed during the operation of the scraper conveyor. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the scraper conveyor frame structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the moving component of this utility model;

[0017] Figure 4 This utility model Figure 3 Top view;

[0018] Figure 5 This is an exploded view of the structure of the adjusting component of this utility model;

[0019] Figure 6 This utility model Figure 5 Top view.

[0020] In the diagram: 1. Scraper frame; 2. Scale groove; 3. Moving part; 31. Sprocket; 32. Idler shaft; 33. Baffle plate; 34. Support base; 35. Positioning block; 36. Bearing block; 37. Connecting plate; 38. Support block; 39. Tensioning rod; 310. Indicator block; 4. Adjusting part; 41. Bearing plate; 42. Tensioning screw; 43. Connecting screw; 44. Positioning nut; 45. Tensioning plate; 46. Threaded ring; 47. Threaded hole; 5. Connecting plate; 6. Moving groove. Detailed Implementation

[0021] Please see Figures 1-6A scraper conveyor chain tension adjustment mechanism includes a scraper conveyor frame 1. Movable grooves 6 are provided on both the left and right sides of the inner wall of the scraper conveyor frame 1. A moving component 3 is installed between the two movable grooves 6. The moving component 3 includes two support blocks 38. Baffle plates 33 are connected to both the left and right sides of the support blocks 38. Support seats 34 are connected to the sides of the leftmost and rightmost baffle plates 33 that are furthest apart. A redirecting shaft 32 is movably connected between the two support seats 34 via bearings. Sprockets 31 are fixedly sleeved on both the left and right sides of the redirecting shaft 32. A positioning block 35 is connected to the front side of the support 34, a tensioning rod 39 is connected to the front side of the positioning block 35, a connecting plate 37 is fixedly connected to the front side of the tensioning rod 39, and an adjusting component 4 is connected to the front side of the two connecting plates 37. The adjusting component 4 includes a tensioning plate 45, and threaded holes 47 are provided on both the left and right sides of the rear side of the tensioning plate 45. A connecting screw 43 is threaded to the inner wall of the threaded hole 47, and the rear side of the connecting screw 43 passes through the connecting plate 37. The longitudinal length and vertical height of the baffle plate 33 are both greater than the longitudinal length and vertical height of the moving groove 6.

[0022] The scraper frame 1 has scale grooves 2 on both the left and right sides and at the bottom of the moving groove 6. The bottom of the leftmost baffle plate 33 and the rightmost baffle plate 33 are connected to indicator blocks 310 that cooperate with the scale grooves 2. The specific movement of the moving part 3 can be easily known through the cooperation of the indicator blocks 310 and the scale grooves 2.

[0023] The two adjacent baffles 33 are in sliding contact with the scraper frame 1 on opposite sides. The support block 38 is located inside the moving groove 6 and is in sliding contact with the inside of the moving groove 6. The outside of the redirecting shaft 32 is movably connected to the baffles 33 and the support block 38 through sealed bearings. Through the cooperation of the baffles 33, the support block 38 and the support seat 34, the redirecting shaft 32 can be supported, and the rotation of the redirecting shaft 32 can be facilitated.

[0024] The tension rod 39 is externally fitted with a bearing block 36, and the opposite sides of the two bearing blocks 36 are connected to the scraper frame 1. The bearing blocks 36 can support the tension rod 39 and facilitate the forward and backward movement of the bearing blocks 36.

[0025] The connecting plate 37 has a through hole for use with the connecting screw 43. The connecting screw 43 is threaded with a threaded ring 46 and a positioning nut 44 on the front and rear sides of the connecting plate 37, respectively. The connecting screw 43 is connected to the connecting plate 37 by means of the threaded ring 46 and the positioning nut 44.

[0026] The front side of the tension plate 45 is movably connected to the tension screw 42 via a bearing. The external thread of the tension screw 42 is fitted with a bearing plate 41. The bottom rear side of the bearing plate 41 is connected to a connecting plate 5. The rear side of the connecting plate 5 is connected to a support frame. The top of the support frame is connected to the scraper frame 1, and the bottom rear side of the support frame is also connected to the connecting plate 5. This process is repeated to support the entire scraper frame 1. Furthermore, the scraper frame 1 is only a part of the scraper housing. The front side of the tension plate 45 has a mounting hole for use with the tension screw 42.

[0027] In use, the front side of the connecting screw 43 passes through the rear side of the connecting plate 37. Then, a threaded ring 46 and a positioning nut 44 are threadedly fitted on the front and rear sides of the connecting screw 43 and the connecting plate 37, respectively. The front side of the connecting screw 43 is aligned with the threaded hole 47. The connecting screw 43 is rotated clockwise to rotate into the threaded hole 47, completing the connection with the tensioning plate 45. Subsequently, the threaded ring 46 is rotated clockwise and the positioning nut 44 is rotated counterclockwise, so that both of them are in contact with the connecting plate 37, completing the connection between the connecting screw 43 and the connecting plate 37. When the scraper conveyor chain needs to be tensioned, reverse the tensioning screw 42 to make it rotate forward. At this time, the tensioning plate 45 moves forward as well, and the tensioning plate 45 drives the two connecting screws 43 to move forward, which in turn drives the entire moving part 3 to move forward, so that the two sprockets 31 tension the scraper conveyor chain. Furthermore, through the cooperation of the indicator block 310 and the scale groove 2, the amount of movement of the moving part 3 can be accurately known, avoiding excessive movement that could damage the scraper conveyor chain. Moreover, the above adjustment can be performed during the operation of the scraper conveyor, which also effectively avoids excessive wear caused by uneven tension on both sides of the chain in the later stages.

[0028] In summary, this scraper conveyor chain tension adjustment mechanism, through the coordinated use of the scraper conveyor frame 1, scale groove 2, moving part 3, adjusting part 4, and moving groove 6, solves the problem that the scraper conveyor chains on both sides cannot be adjusted simultaneously. Adjusting the scraper conveyor chains one by one on one side easily leads to uneven tension, especially during the operation of the scraper conveyor, which can easily cause scraper jamming or even scraper conveyor chain breakage.

Claims

1. A scraper conveyor chain tension adjustment mechanism, comprising a scraper conveyor frame (1), characterized in that: The scraper frame (1) has movable slots (6) on both the left and right sides of its inner wall. A movable component (3) is installed between the two movable slots (6). The movable component (3) includes two support blocks (38). Baffles (33) are connected to both the left and right sides of the support blocks (38). Support seats (34) are connected to the sides of the leftmost and rightmost baffles (33) that are far apart from each other. A redirecting shaft (32) is movably connected between the two support seats (34) through a bearing. Sprockets are fixedly sleeved on both the left and right sides of the redirecting shaft (32). (31) A positioning block (35) is connected to the front side of the support base (34). A tensioning rod (39) is connected to the front side of the positioning block (35). A connecting plate (37) is fixedly connected to the front side of the tensioning rod (39). An adjusting component (4) is connected to the front side of the two connecting plates (37). The adjusting component (4) includes a tensioning plate (45). Threaded holes (47) are opened on both the left and right sides of the rear side of the tensioning plate (45). A connecting screw (43) is threaded to the inner wall of the threaded hole (47). The rear side of the connecting screw (43) passes through the connecting plate (37).

2. The scraper conveyor chain tension adjustment mechanism according to claim 1, characterized in that: The scraper frame (1) has scale grooves (2) on both sides and at the bottom of the moving groove (6). The bottom of the leftmost shield (33) and the rightmost shield (33) are connected to indicator blocks (310) that cooperate with the scale grooves (2).

3. The scraper conveyor chain tension adjustment mechanism according to claim 1, characterized in that: The two adjacent baffles (33) are in sliding contact with the scraper frame (1) on opposite sides. The support block (38) is located inside the moving groove (6) and is in sliding contact with the inside of the moving groove (6). The outside of the redirecting shaft (32) is connected to the baffle (33) and the support block (38) through sealed bearings.

4. The scraper conveyor chain tension adjustment mechanism according to claim 1, characterized in that: The tensioning rod (39) is externally fitted with a bearing block (36), and the opposite sides of the two bearing blocks (36) are connected to the scraper frame (1).

5. The scraper conveyor chain tension adjustment mechanism according to claim 1, characterized in that: The connecting plate (37) has a through hole for use with the connecting screw (43). The connecting screw (43) is threaded with a threaded ring (46) and a positioning nut (44) on the front and rear sides of the connecting plate (37).

6. The scraper conveyor chain tension adjustment mechanism according to claim 1, characterized in that: The front side of the tensioning plate (45) is movably connected to the tensioning screw (42) via a bearing. The external thread of the tensioning screw (42) is fitted with a bearing plate (41), and the bottom of the rear side of the bearing plate (41) is connected to a connecting plate (5).

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