A screw tightening device for chain traction machinery

Abstract

This utility model relates to a screw tightening device for chain-driven machinery, belonging to the field of feeding equipment in industrial production. The screw tightening device is installed on the side of a plate feeder and includes a tail frame, a threaded rod, a threaded tube, a spring fixing frame, a spring seat, a spring, a sliding bearing seat, a support beam, and a slide rail. The tail frame, located on both sides of the plate feeder, supports the feeder. At the head of the feeder, a motor transmits power to a transmission unit via gears. The transmission unit drives the chain to rotate, and the chain plates, mounted on the chain, rotate accordingly. At the tail of the feeder, the driven chain plates rotate. During operation, due to the weight of the chain plates and chain, the chain plates tend to move towards the center. At this time, the screw tightening device pushes the driven part backward, tightening the chain plates.

Description

Technical Field

[0001] This utility model belongs to the field of feeding equipment in industrial production. Specifically, this utility model relates to a screw tightening device for chain traction machinery. Background Technology

[0002] Chain-driven machinery is mainly used for the continuous conveying of block or bulk materials. Commonly used equipment includes plate feeders, scraper conveyors, and bucket elevators. It is used in harsh environments to complete heavy work and is widely used in industries such as metallurgy, coal mining, mineral processing, and building materials.

[0003] Traditional chain-driven machinery mostly uses a screw rotation adjustment method to tighten the chain, ensuring proper meshing between the sprocket and the chain. This connection method is a rigid connection; once the screw position is fixed, the chain tension cannot be adjusted. When material falls, the chain experiences significant tension, and this rigid connection forces the chain to operate under constant high tension, affecting its lifespan. Furthermore, the chain is susceptible to loosening due to thermal expansion and contraction. Over prolonged operation, the chain undergoes varying degrees of stretching and wear. When this stretching and wear reach a certain level, slippage can occur when the chain engages with the sprocket, potentially leading to chain breakage and posing a safety hazard. This screw-based tensioning method cannot achieve precise tension; moreover, it lacks vibration damping, resulting in high noise and vibration levels.

[0004] Currently, the tensioning method on the market includes spring-pull rod devices, but they take up a lot of space and are not suitable for use in small spaces. The spring is usually fixed with double nuts, which is not very safe and poses a safety hazard after long-term use. Utility Model Content

[0005] To overcome the problems existing in the background technology, this utility model discloses a screw tightening device for chain traction machinery. The screw tightening device for chain traction machinery includes a tail frame, a threaded rod, a threaded tube, a spring fixing frame, a spring seat, a spring, a sliding bearing seat, a support beam, and a slide rail. The threaded tube is fixed on the tail frame, and one end of the spring seat is fixed on the sliding bearing seat. The threaded rod can move left and right through the threaded tube. The threaded rod pushes the sliding bearing seat to the right by pushing the spring seat to achieve the purpose of tightening the chain plate. At the same time, after the sliding bearing seat reaches the predetermined position, the spring fixing frame can be inserted to fix the position of the spring seat. At this time, the threaded rod will no longer be under force. The tail frame is welded from multiple steel plates and a base, and plays a fixing role. The sliding bearing seat is welded with slide rails, allowing it to move left and right. The threaded tube and threaded rod are both made of high-strength steel and can cooperate to control the left and right movement of the sliding bearing seat. The spring fixing frame is welded from multiple steel plates and replaces the threaded tube to fix the spring seat after the sliding bearing seat reaches the predetermined position. It can be removed when disassembly is required. The support beam is welded from multiple steel plates and has slide rails welded on it, allowing the sliding bearing seat to move left and right while preventing the sliding bearing seat from moving upward during machine operation.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] The screw tightening device of the chain traction machinery, which is installed on the side of the chain traction machinery, is characterized by comprising: a tail frame, a left frame, a right frame, a spring fixing frame, a spring seat, a sliding bearing seat, a support beam, and a slide rail; the left frame and the right frame are located on the top surface of the tail frame, the slide rail is located on the top surface of the tail frame, the spring fixing frame, the spring seat, and the sliding bearing seat are located on the top surface of the tail frame, between the left frame and the right frame, the bottom surface of the spring fixing frame, the spring seat, and the sliding bearing seat is embedded in the slide rail, the support beam is located on the top surface of the spring fixing frame, the spring seat, and the sliding bearing seat, between the left frame and the right frame, the bottom surface of the support beam is provided with a slide rail, the top surface of the spring fixing frame, the spring seat, and the sliding bearing seat is embedded in the slide rail, a threaded pipe is installed on the side of the left frame, and a threaded rod is inserted into the left side of the threaded pipe.

[0008] Preferably, the device includes a first side plate and a second side plate; the first side plate and the second side plate are disposed on the top surface of the tail frame, and the first side plate and the second side plate are located between the top surface of the left frame and the bottom surface of the tail frame; the first side plate has two external insertion ports through its side, and the second side plate has two internal insertion ports through its side.

[0009] Preferably, the threaded tube is disposed between the first side plate and the second side plate, and the left and right openings of the threaded tube coincide with the outer insertion port and the inner insertion port.

[0010] As a preferred embodiment: a left bolt hole; the left bolt hole is provided through the side of the second side plate.

[0011] Preferably, it includes a right bolt hole; the right bolt hole is provided through the side of the right frame.

[0012] Preferably, the spring fixing bracket includes two fixing brackets, which are disposed through the side of the spring fixing bracket.

[0013] Preferably, the spring includes a spring socket and a spring. The spring socket is located on the side of the spring seat, and there are two sets of spring seats arranged opposite to each other, with the spring located between the two sets of spring seats.

[0014] As a preferred embodiment, the structure includes: a left plate, a right plate, bolt holes in the left plate and the right plate, and bolts for the support beam; the left plate and the right plate are located on the left and right sides of the support beam, the bolt holes in the left plate are located through the side of the left plate, the bolt holes in the right plate are located through the side of the right plate, and the bolts for the support beam are connected to the left plate and the right plate.

[0015] Preferably, the spring fixing frame, spring seat, and sliding bearing seat are provided with slide rail insertion ports on their top and bottom surfaces. The slide rail insertion ports are recessed grooves on the top and bottom surfaces of the spring fixing frame, spring seat, and sliding bearing seat, and the shape of the slide rail insertion ports matches the slide rail.

[0016] The beneficial effects of this utility model are as follows: The screw tightening device of the chain traction machine includes a tail frame, a threaded rod, a threaded tube, a spring fixing frame, a spring seat, a spring, a sliding bearing seat, a support beam, and a slide rail; the threaded tube is fixed on the tail frame, one end of the spring seat is fixed on the sliding bearing seat, the threaded rod can move left and right through the threaded tube, and the threaded rod pushes the sliding bearing seat to the right by pushing the spring seat to achieve the purpose of tightening the chain plate. At the same time, after the sliding bearing seat reaches the predetermined position, the spring fixing frame can be inserted to fix the position of the spring seat, at which time the threaded rod will no longer be under force; the tail frame is welded from multiple steel plates and a base, and plays a fixing role. The sliding bearing seat is welded with slide rails, allowing it to move left and right. The threaded tube and threaded rod are both made of high-strength steel and can cooperate to control the left and right movement of the sliding bearing seat. The spring fixing frame is welded from multiple steel plates and replaces the threaded tube to fix the spring seat after the sliding bearing seat reaches the predetermined position. It can be removed when disassembly is required. The support beam is welded from multiple steel plates and has slide rails welded on it, allowing the sliding bearing seat to move left and right while preventing the sliding bearing seat from moving upward during machine operation. Attached Figure Description

[0017] Figure 1 This is a diagram showing the connection between the present invention and the plate feeder;

[0018] Figure 2 This is a plan view of the present invention;

[0019] Figure 3 This is a perspective view of the present utility model;

[0020] Figure 4 This is a schematic diagram showing the connection relationship between the tail frame and the left and right frames.

[0021] Figure 5 This is a schematic diagram of the spring fixing bracket.

[0022] Figure 6 This is a structural diagram of the supporting beam;

[0023] Figure 7 This is a schematic diagram of the spring seat structure;

[0024] Figure 8 This is a schematic diagram of the structure of a sliding bearing housing;

[0025] Figure 9 This is a schematic diagram of the slide rail structure;

[0026] Figure 10 This is a schematic diagram of the spring structure;

[0027] Figure 11 This is a schematic diagram of the threaded rod structure;

[0028] Figure 12 This is a schematic diagram of a threaded pipe.

[0029] In the diagram, the components are: 1. Plate feeder; 2. Base; 3. Motor; 4. Transmission unit; 5. Pinion; 6. Chain; 7. Chain plate; 8. Driven part; 9. Tightening device; 10. Tail frame; 11. Left frame; 12. Right frame; 13. Spring fixing frame; 14. Threaded rod; 15. Threaded pipe; 16. Spring seat; 17. Spring; 18. Sliding bearing seat; 19. Support beam; 20. Slide rail; 21. Support beam bolt; 22. Left plate; 23. Left plate bolt hole; 24. Right bolt hole; 25. First side plate; 26. Second side plate; 27. Outer socket; 28. Inner socket; 29. ​​Left bolt hole; 30. Fixing frame socket; 31. Slide rail socket; 32. Right plate; 33. Right plate bolt hole; 34. Spring socket. Detailed Implementation

[0030] To make the above objectives, technical solutions and beneficial effects clearer and more explicit, the present invention will be described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-12As shown, the screw tightening device of the chain traction machine is installed on the side of the chain traction machine. The screw tightening device 9 includes a tail frame 10, a left frame 11, a right frame 12, a spring fixing frame 13, a spring seat 16, a sliding bearing seat 18, a support beam 19, a slide rail 20, a threaded rod 14, and a threaded pipe 15.

[0032] The left frame 11 and the right frame 12 are welded to the top surface of the tail frame 10. A slide rail 20 is welded between the left frame 11 and the right frame 12 on the top surface of the tail frame 10. The left frame 11 includes a first side plate 25 and a second side plate 26. The first side plate 25 and the second side plate 26 are welded side by side to the top surface of the tail frame 10. The first side plate 25 has two external insertion ports 27 through it, and the second side plate 26 has two internal insertion ports 28 through it. The external insertion ports 27 and the internal insertion ports 28 are arranged in the same direction.

[0033] A spring fixing bracket 13 is provided on the right side of the left frame 11. A fixing bracket insertion port 30 is provided through the side of the spring fixing bracket 13. A slide rail insertion port 31 is provided on the top and bottom surfaces of the spring fixing bracket 13. When the spring fixing bracket 13 is installed, the fixing bracket insertion port 30 is arranged in the same direction as the outer insertion port 27 and the inner insertion port 28. The slide rail insertion port 31 is embedded in the slide rail 20. Two sets of threaded tubes 15 are provided. The two sets of threaded tubes 15 are arranged between the first side plate 25 and the second side plate 26. The threaded tubes 15 are arranged in the same direction as the fixing bracket insertion port 30, the outer insertion port 27, and the inner insertion port 28. Two sets of threaded rods 14 are provided. The two sets of threaded rods 14 are inserted from the two outer insertion ports 27 respectively, passing through the outer insertion port 27, the threaded tube 15, and the fixing bracket insertion port 30.

[0034] A spring seat 16 is provided on the right side of the spring fixing bracket 13. The top and bottom surfaces of the vertically arranged spring seat 16 are provided with slide rail insertion ports 31. When the spring seat 16 is installed, the slide rail insertion ports 31 are embedded in the slide rail 20. Two spring insertion ports 34 are provided on the side. There are two sets of spring seats 16. The spring insertion ports 34 of the two sets of spring seats 16 are arranged opposite each other. Two sets of springs 17 are arranged between the two spring seats 16. The left and right ends of the springs 17 are installed at the spring insertion ports 34. A sliding bearing seat 18 is provided on the right side of the spring seat 16. The top and bottom surfaces of the sliding bearing seat 18 are provided with slide rail insertion ports 31. When the sliding bearing seat 18 is installed, the slide rail insertion ports 31 are embedded in the slide rail 20. After the threaded rod 14 is inserted, its right end contacts the spring seat 16.

[0035] The top surfaces of the spring fixing frame 13, spring seat 16, and sliding bearing seat 18 are provided with a support beam 19. The left and right ends of the support beam 19 are welded with a left plate 22 and a right plate 32. The left plate bolt hole 23 and the right plate bolt hole 33 are provided through the side of the right plate 32. The left plate bolt hole 23 is aligned with the left bolt hole 29 on the side of the second side plate 26 and then the support beam bolt 21 is inserted for installation. The right plate bolt hole 33 is aligned with the right bolt hole 24 on the side of the left frame 11 and then the support bolt is inserted for installation. The left and right ends of the complete support beam are fixed. The bottom surface of the support beam 19 is welded with a slide rail 20. The slide rail insertion port 31 on the top surface of the spring fixing frame 13, spring seat 16, and sliding bearing seat 18 is embedded into the slide rail 20 on the bottom surface of the support beam 19.

[0036] The screw tightening device 9 of the chain 6 traction mechanism includes a tail frame 10, a threaded rod 14, a threaded tube 15, a spring fixing frame 13, a spring seat 16, a spring 17, a sliding bearing seat 18, a support beam 19, and a slide rail 20. The threaded tube 15 is fixed on the tail frame 10 and has internal threads. One end of the spring seat 16 is fixed on the sliding bearing seat 18. The threaded rod 14 can move left and right through the threaded tube 15. The threaded rod 14 pushes the sliding bearing seat 18 to the right by pushing the spring seat 16 to achieve the purpose of tightening the chain plate 7. At the same time, after the sliding bearing seat 18 reaches the predetermined position, the spring fixing frame 13 can be inserted to fix the position of the spring seat 16. At this time, the threaded rod 14 will no longer be under force. The tail frame 10 is welded from multiple steel plates and a base 2 and serves as a fixing device. The sliding bearing seat 18 is welded with a slide rail 20, which allows the sliding bearing seat 18 to move left and right. The threaded tube 15 and threaded rod 14 are both made of high-strength steel and can cooperate with each other to control the left and right movement of the sliding bearing seat 18. The spring fixing bracket 13 is welded from multiple steel plates and replaces the threaded tube 15 to fix the spring seat 16 after the sliding bearing seat 18 reaches the predetermined position. It can be removed when disassembly is required. The support beam 19 is welded from multiple steel plates and has a slide rail 20 welded on it, which allows the sliding bearing seat 18 to move left and right, while preventing the sliding bearing seat 18 from moving upward when the machine is running.

[0037] like Figure 1As shown, when the plate feeder 1 is used as a chain-driven machine, the screw clamping device 9 is installed on the side of the plate feeder 1, and the tail frame 10 is located on both sides of the plate feeder 1, serving to support the plate feeder 1. At the head of the plate feeder 1, the motor 3 transmits power to the transmission unit 4 through gears. The transmission unit 4 drives the chain 6 to rotate, and the chain plate 7, which is installed on the chain 6, rotates accordingly. At the tail of the plate feeder 1, the driven part 8, the chain 6, and the chain plate 7 rotate. When the plate feeder 1 is running, the chain plate 7 will move towards the center due to the gravity of the chain plate 7 and chain 6. At this time, the threaded rod 14 can be rotated using a wrench. Since the threaded tube 15 has internal threads, it can cooperate with the threaded rod 14. Rotating the threaded rod 14 will cause it to move to the right. The threaded rod 14 is connected to the spring seat 16, and the spring seat 16 is connected to the sliding bearing seat 18 through the spring 17. When the threaded rod 14 moves to the right, it will compress the spring 17. At this time, the spring 17 will force the sliding bearing seat 18 to move to the right. The transmission part 4 is fixed, and the sliding bearing seat 18 is connected to the driven part 8. The movement paths are the same. When the sliding bearing seat 18 moves to the right, the driven part 8 moves to the right, and the chain plate 7 is connected to the driven part 8 through the chain 6. The chain plate 7 will then be tensioned. At this time, the purpose of tightening the chain plate 7 by this device is achieved.

[0038] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A screw tightening device for a chain traction machine, wherein the screw tightening device is installed on the side of the chain traction machine, characterized in that, The screw clamping device includes: a tail frame, a left frame, a right frame, a spring fixing frame, a spring seat, a sliding bearing seat, a support beam, and a slide rail; The left and right frames are located on the top surface of the tail frame, and the slide rail is located on the top surface of the tail frame. The spring fixing frame, spring seat, and sliding bearing seat are located on the top surface of the tail frame, between the left and right frames. The bottom surfaces of the spring fixing frame, spring seat, and sliding bearing seat are embedded in the slide rail. The support beam is located on the top surface of the spring fixing frame, spring seat, and sliding bearing seat, between the left and right frames. The bottom surface of the support beam is provided with a slide rail, and the top surfaces of the spring fixing frame, spring seat, and sliding bearing seat are embedded in the slide rail. A threaded pipe is installed on the side of the left frame, and a threaded rod is inserted into the left side of the threaded pipe.

2. The screw tightening device for a chain traction machine according to claim 1, characterized in that: It includes a first side plate and a second side plate; the first side plate and the second side plate are disposed on the top surface of the tail frame, and the first side plate and the second side plate are located between the top surface of the left frame and the bottom surface of the tail frame; the first side plate has two external insertion ports through its side, and the second side plate has two internal insertion ports through its side.

3. The screw tightening device for a chain traction machine according to claim 2, characterized in that: A threaded tube is provided between the first side plate and the second side plate, with the left and right openings of the threaded tube coinciding with the outer and inner insertion ports.

4. The screw tightening device for a chain traction machine according to claim 2, characterized in that: Includes a left bolt hole; the left bolt hole is provided through the side of the second side plate.

5. The screw tightening device for a chain traction machine according to claim 1, characterized in that: Includes a right bolt hole; the right bolt hole is provided through the side of the right frame.

6. The screw tightening device for a chain traction machine according to claim 1, characterized in that: It includes a fixing bracket socket; there are two fixing bracket sockets, which are disposed through the side of the spring fixing bracket.

7. The screw tightening device for a chain traction machine according to claim 1, characterized in that: It includes a spring socket and a spring; the spring socket is located on the side of the spring seat, and there are two sets of spring seats, which are arranged opposite to each other, with the spring located between the two sets of spring seats.

8. The screw tightening device for a chain traction machine according to claim 1, characterized in that: It includes a left plate, a right plate, bolt holes in the left plate and the right plate, and bolts for the support beam; the left plate and the right plate are located on the left and right sides of the support beam, the bolt holes in the left plate are through the side of the left plate, the bolt holes in the right plate are through the side of the right plate, and the bolts for the support beam are connected to the left plate and the right plate.

9. The screw tightening device for a chain traction machine according to claim 1, characterized in that: Includes a slide rail socket; the top and bottom surfaces of the spring fixing frame, spring seat, and sliding bearing seat are all provided with slide rail sockets, which are recessed grooves on the top and bottom surfaces of the spring fixing frame, spring seat, and sliding bearing seat, and the shape of the slide rail socket matches the slide rail.

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