Chain breakage buffering device for plate chain conveyor
By designing a chain breakage buffer device on the plate chain conveyor, and using buffer springs to absorb the impact force of the broken chain, the problem of chain breakage and splashing under overload conditions is solved, thus improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANXI HUANENG TRANSPORTATION EQUIP MFG CO LTD
- Filing Date
- 2025-06-01
- Publication Date
- 2026-05-08
AI Technical Summary
Plate chain conveyors are prone to chain breakage under overload conditions, and lack cushioning measures, which can lead to chain breakage and splashing, posing a safety hazard.
Design a chain breakage buffer device including an L-shaped plate, a screw, a pressure plate, a top plate, a concave plate, a pressure roller, a buffer rod, and a buffer spring. The buffer spring absorbs the impact force of the broken chain and converts it into elastic potential energy, thereby reducing the impact intensity of the chain.
It effectively reduces chain breakage and splashing, improves safety, and protects equipment and personnel.
Smart Images
Figure CN224211809U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plate chain conveyor technology, and in particular to a chain breakage buffer device for plate chain conveyors. Background Technology
[0002] A plate chain conveyor is a general-purpose, stationary mechanized conveying device. It utilizes a series of chain plates fixed to a traction chain. A power unit (such as a motor) drives the chain in a reciprocating motion, providing traction. Using metal or plastic plates as the carrier, it guides materials along horizontal or inclined directions. This type of conveyor features simple structure, reliable operation, long service life, and convenient installation and maintenance. It has no special requirements regarding material particle size, shape, or working environment, and is suitable for conveying large and sharp materials, especially large, heavy, hot, and corrosive materials. Plate chain conveyors are widely used in machinery, casting, metallurgy, chemical, building materials, power, and mining industries, and are indispensable equipment in raw material handling or continuous production processes.
[0003] In existing technologies, plate chain conveyors face several pressing problems during actual operation. When the weight of the material being conveyed exceeds the rated load capacity of the plate chain, the chain will bear excessive tensile force. Prolonged overload under these conditions accelerates wear and fatigue, reducing its strength and making it highly susceptible to chain breakage. More seriously, when a chain breaks, the lack of necessary buffering measures, coupled with the inherent speed and inertia of both the chain and the conveyed material, disrupts the previously constrained motion. The broken chain continues to move upwards due to inertia, causing chain fragments to fly off, potentially posing a serious safety hazard to surrounding personnel and significantly reducing the safety of the plate chain conveyor during operation. Utility Model Content
[0004] The main objective of this invention is to provide a chain breakage buffer device for plate chain conveyors, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A chain breakage buffer device for a plate chain conveyor includes a plate chain conveyor body and a concave frame disposed on the plate chain conveyor body. The top surface of the concave frame is provided with a chain breakage buffer mechanism, which includes an L-shaped plate, a screw, a pressure plate, a top plate, a concave plate, a pressure roller, a buffer rod, and a buffer spring. The L-shaped plate is fixedly connected to the bottom surface of the top plate, and the screw is movably connected to the bottom surface of a fixed block on the outer wall of the L-shaped plate through a first rotating rod at the top. The pressure plate is movably connected to the screw through a connecting block on the outer wall. The pressure roller is movably connected to the concave plate through second rotating rods on both sides, and the concave plate is movably connected to the bottom surface of the top plate through a buffer rod on the top surface. The buffer spring is sleeved on the outside of the buffer rod.
[0007] Furthermore, the top surface of the concave frame is provided with several sets of symmetrical positioning holes.
[0008] Furthermore, an L-shaped plate corresponding to several sets of symmetrical positioning holes is fixedly installed on the bottom surface of the top plate, and a limiting hole corresponding to the positioning hole is opened on the top surface of the horizontal part of the L-shaped plate. A vertical opening is opened on the side wall of the vertical part of the L-shaped plate, and a fixing block is fixedly installed on the outer side wall of the vertical part of the L-shaped plate at the top of the vertical opening. A first rotating hole is opened on the top surface of the fixing block.
[0009] Furthermore, a first rotating rod is fixedly installed at the top of the screw, and the first rotating rod is movably installed in the first rotating hole. A knob is fixedly installed at the top of the first rotating rod. A connecting block is fixedly installed on the outer wall of the pressure plate, and the connecting block passes through the vertical opening. A screw hole is opened on the top surface of the connecting block, and the connecting block is threadedly connected to the screw through the screw hole. A set of symmetrical limiting rods is fixedly installed on the bottom surface of the pressure plate, and the limiting rods pass through the positioning hole and are inserted into the limiting hole.
[0010] Furthermore, the top surface of the top plate has several through holes, and a set of symmetrical guide bars are fixedly installed on the inner wall of the through holes.
[0011] Furthermore, several concave plates are provided, and the concave plates are inverted. Second rotating holes are respectively opened on the two side walls of the concave plates. Second rotating rods are fixedly installed on both sides of the pressure roller, and the second rotating rods are movably installed in the second rotating holes. The pressure roller is in close contact with the top surface of the chain plate of the plate chain conveyor body. A buffer rod is fixedly installed on the top surface of the concave plate, and the buffer rod is inserted into the through hole. A guide groove corresponding to the guide bar is also opened on the outer wall of the buffer rod. The buffer spring is sleeved on the outside of the buffer rod and fixedly installed between the top plate and the opposite wall of the concave plate. A baffle is also fixedly installed at the top of the buffer rod.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] In this utility model, the chain breakage buffer mechanism is set so that the upper side of the concave frame is placed between the horizontal part of the L-shaped plate and the pressure plate, and the limiting hole is aligned with the positioning hole. Rotating the knob drives the screw to rotate through the first rotating rod, so that the connecting block moves downward along the screw through the screw hole and drives the pressure plate to press against the top surface of the concave frame. At the same time, the limiting rod passes through the positioning hole and is inserted into the limiting hole, thereby achieving the purpose of facilitating the installation and fixing of the chain breakage buffer mechanism on the plate chain conveyor body for use.
[0014] When the chain of the plate chain conveyor breaks, the broken chain impacts the pressure roller upwards. The pressure roller, through a concave plate, drives the buffer rod to compress the buffer spring upwards. The elastic deformation of the buffer spring absorbs the impact force generated by the broken chain, converting kinetic energy into elastic potential energy. This effectively reduces the impact intensity of the plate chain, prevents the chain from splashing, and thus effectively buffers the broken chain, avoiding safety hazards to surrounding personnel and improving the safety of the plate chain conveyor during use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a front view schematic diagram of the overall structure of this utility model.
[0017] Figure 3 This is a schematic diagram of the concave frame of this utility model;
[0018] Figure 4 This is a schematic diagram of the overall structure of the chain breakage buffer mechanism of this utility model;
[0019] Figure 5 For the present utility model Figure 4 A schematic diagram of the structural breakdown at point A;
[0020] Figure 6 For the present utility model Figure 4 A schematic diagram of the structural breakdown at point B.
[0021] In the diagram: 1. Plate chain conveyor body; 2. Concave frame; 3. Chain breakage buffer mechanism; 4. Positioning hole; 5. L-shaped plate; 6. Limiting hole; 7. Vertical opening; 8. Fixing block; 9. First rotating hole; 10. Screw; 11. First rotating rod; 12. Knob; 13. Pressure plate; 14. Connecting block; 15. Screw hole; 16. Limiting rod; 17. Top plate; 18. Through hole; 19. Guide bar; 20. Concave plate; 21. Second rotating hole; 22. Pressure roller; 23. Second rotating rod; 24. Buffer rod; 25. Guide groove; 26. Buffer spring; 27. Baffle plate. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
[0023] like Figure 1 - Figure 6 As shown, a chain breakage buffer device for a plate chain conveyor includes a plate chain conveyor body 1 and a concave frame 2 mounted on the plate chain conveyor body 1. The top surface of the concave frame 2 is provided with a chain breakage buffer mechanism 3, which includes an L-shaped plate 5, a screw 10, a pressure plate 13, a top plate 17, a concave plate 20, a pressure roller 22, a buffer rod 24, and a buffer spring 26. The L-shaped plate 5 is fixedly connected to the bottom surface of the top plate 17, and the screw 10 is movably connected to the bottom surface of the outer wall fixing block 8 of the L-shaped plate 5 through a first rotating rod 11 at the top. The pressure plate 13 is movably connected to the screw 10 through a connecting block 14 on the outer wall. The pressure roller 22 is movably connected to the concave plate 20 through second rotating rods 23 on both sides, and the concave plate 20 is movably connected to the bottom surface of the top plate 17 through the buffer rod 24 on the top surface. The buffer spring 26 is sleeved on the outside of the buffer rod 24.
[0024] like Figure 3 As shown, the top surface of the concave frame 2 is provided with several sets of symmetrical positioning holes 4, so that components such as the top plate 17 can be accurately installed on the concave frame 2 by cooperating with the positioning holes 4, ensuring the accuracy of the installation position of the entire chain break buffer device, laying the foundation for the device to play its normal buffering function, and also facilitating installation and disassembly operations.
[0025] like Figure 4 and Figure 5 As shown, an L-shaped plate 5 corresponding to several sets of symmetrical positioning holes 4 is fixedly installed on the bottom surface of the top plate 17. The top surface of the horizontal part of the L-shaped plate 5 is provided with a limiting hole 6 corresponding to the positioning hole 4. A vertical opening 7 is provided on the side wall of the vertical part of the L-shaped plate 5. A fixing block 8 is also fixedly installed on the outer side wall of the vertical part of the L-shaped plate 5 and at the top of the vertical opening 7. A first rotating hole 9 is provided on the top surface of the fixing block 8. The limiting hole 6 of the horizontal part of the L-shaped plate 5 cooperates with the positioning hole 4 to realize the initial positioning of the top plate 17 and the concave frame 2. The vertical opening 7 provides a channel for the movement of the connecting block 14. The first rotating hole 9 on the fixing block 8 is used to install the first rotating rod 11 at the top of the screw 10, so that the screw 10 can rotate around the first rotating hole 9.
[0026] like Figure 5As shown, a first rotating rod 11 is fixedly installed at the top of the screw 10, and the first rotating rod 11 is movably installed in the first rotating hole 9. A knob 12 is fixedly installed at the top of the first rotating rod 11. A connecting block 14 is fixedly installed on the outer wall of the pressure plate 13, and the connecting block 14 passes through the vertical opening 7. A screw hole 15 is opened on the top surface of the connecting block 14, and the connecting block 14 is threadedly connected to the screw 10 through the screw hole 15. A set of symmetrical limiting rods 16 are fixedly installed on the bottom surface of the pressure plate 13, and the limiting rods 16 pass through the positioning hole 4 and are inserted into the mounting hole. Within the limiting hole 6, rotating the knob 12 drives the screw 10 to rotate via the first rotating rod 11, causing the connecting block 14 to move downward along the screw 10 through the screw hole 15, thus pressing the pressure plate 13 against the top surface of the concave frame 2. Simultaneously, the limiting rod 16 on the bottom surface of the pressure plate 13 passes through the positioning hole 4 and is inserted into the limiting hole 6. This facilitates the installation and fixing of the broken chain buffer mechanism 3 onto the plate chain conveyor body 1 for use, and prevents the broken chain buffer mechanism 3 from loosening during operation, ensuring that the broken chain buffer mechanism 3 can work normally.
[0027] like Figure 4 and Figure 6 As shown, the top surface of the top plate 17 has several through holes 18, and a set of symmetrical guide bars 19 are fixedly installed on the inner wall of the through holes 18. The through holes 18 on the top surface of the top plate 17 are used to insert and install the buffer rod 24. The guide bars 19 on the inner wall of the hole cooperate with the guide grooves 25 on the outer wall of the buffer rod 24 to guide the movement of the buffer rod 24, restricting the buffer rod 24 to move only in the vertical direction, ensuring the stability and straightness of the buffer rod 24 during the up and down movement, so that it can accurately compress or extend the buffer spring 26, improve the working reliability of the chain breakage buffer mechanism, and ensure that the impact force can be effectively absorbed when the plate chain breaks.
[0028] like Figure 6As shown, several concave plates 20 are provided, and the concave plates 20 are inverted. Second rotating holes 21 are respectively opened on the two side walls of the concave plates 20. Second rotating rods 23 are fixedly installed on both sides of the pressure roller 22, and the second rotating rods 23 are movably installed in the second rotating holes 21. The pressure roller 22 is in close contact with the top surface of the chain plate of the plate chain conveyor body 1. A buffer rod 24 is fixedly installed on the top surface of the concave plates 20, and the buffer rod 24 is inserted into the through hole 18. A connection is also opened on the outer wall of the buffer rod 24 to the guide bar 1. The guide groove 25 corresponds to 9, and the buffer spring 26 is fitted outside the buffer rod 24 and fixedly installed between the opposing walls of the top plate 17 and the concave plate 20. A baffle 27 is also fixedly installed at the top of the buffer rod 24. The pressure roller 22 is movably connected to the concave plate 20 through the second rotating rod 23 and can roll on the top surface of the chain plate of the plate chain conveyor body 1. When the plate chain breaks, the broken plate chain impacts the pressure roller 22, and the pressure roller 22 drives the concave plate 20 to move upward, compressing the buffer spring 26. The buffer spring 26 absorbs the impact force. The buffer rod 24 moves in the through hole 18. The guide bar 19 cooperates with the guide groove 25 to ensure its movement direction. The baffle 27 prevents the buffer rod 24 from disengaging from the through hole 18, thereby effectively buffering the impact force generated when the plate chain breaks and protecting the safety of equipment and personnel.
[0029] The specific operating principle of the chain breakage buffer mechanism 3 in conjunction with the plate chain conveyor body 1 is as follows:
[0030] Align the limiting hole 6 on the top surface of the horizontal part of the L-shaped plate 5 installed on the bottom surface of the top plate 17 with the positioning hole 4 on the top surface of the concave frame 2, and place the pressure plate 13 above the concave frame 2. Then, manually rotate the knob 12 to drive the first rotating rod 11 to rotate in the first rotating hole 9 on the top surface of the fixing block 8. The first rotating rod 11 will drive the screw 10 to rotate, so that the connecting block 14 moves downward through the screw hole 15 on the top surface and along the screw 10 in the vertical opening 7 on the vertical side wall of the L-shaped plate 5. The connecting block 14 will drive the pressure plate 13 to move downward until the pressure plate 13 is pressed against the top surface of the concave frame 2, and the limiting rod 16 installed on the bottom surface of the pressure plate 13 passes through. Insert the knob 12 into the positioning hole 4 and limit hole 6 until it can no longer be turned. Therefore, the top plate 17 can be installed on both sides of the top surface of the plate chain conveyor body 1 by limiting and clamping. At this time, the pressure roller 22 located on the bottom surface of the top plate 17 will be pressed tightly against the top surface of the chain plate of the plate chain conveyor body 1 under the elastic action of the buffer spring 26. When the plate chain of the plate chain conveyor body 1 breaks, the motion state originally constrained by the plate chain is broken. Since both the plate chain and the conveyed material have a certain speed and inertia, the broken plate chain will continue to move upward due to inertia. At this time, the pressure roller 22 pressed tightly against the top surface of the chain plate of the plate chain conveyor body 1 will first be impacted by the broken plate chain. When impacted, the second rotating rods 23 on both sides of the pressure roller 22 are movably installed in the second rotating holes 21 on both sides of the concave plate 20, allowing the pressure roller 22 to rotate relative to the concave plate 20. This alleviates the instantaneous impact force to a certain extent and allows the pressure roller 22 to adapt to the movement of the chain plate under its rotation, without affecting the normal operation of the plate chain conveyor body 1. At the same time, the concave plate 20 is inverted and a buffer rod 24 is fixedly installed on its top surface. The buffer rod 24 is inserted into the through hole 18 on the top surface of the top plate 17, and the guide groove 25 on the outer wall of the buffer rod 24 corresponds to the guide bar 19 on the inner wall of the through hole 18. This ensures that the buffer rod 24 can only move stably in the vertical direction. When the pressure roller 22 is subjected to impact, the buffer rod 24 can rotate relative to the concave plate 20. When the impact causes the concave plate 20 to move upward, the buffer rod 24 also moves upward within the through hole 18, thereby compressing the buffer spring 26, which is fitted outside the buffer rod 24 and fixedly installed between the top plate 17 and the opposing wall of the concave plate 20. Because the buffer spring 26 is elastic, it absorbs the kinetic energy of the broken chain during the compression process and converts it into its own elastic potential energy, thereby reducing the upward impact force and movement speed of the chain and playing a buffering role. Setting up several concave plates 20 can increase the coverage and buffering force of the chain buffer, better cope with chain breakage impacts of different positions and degrees, improve the buffering effect, and protect the safety of equipment and surrounding personnel.
[0031] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A chain breakage buffer device for a plate chain conveyor, comprising a plate chain conveyor body (1) and a concave frame (2) disposed on the plate chain conveyor body (1), characterized in that: The top surface of the concave frame (2) is provided with a chain breakage buffer mechanism (3), and the chain breakage buffer mechanism (3) includes an L-shaped plate (5), a screw (10), a pressure plate (13), a top plate (17), a concave plate (20), a pressure roller (22), a buffer rod (24), and a buffer spring (26). The L-shaped plate (5) is fixedly connected to the bottom surface of the top plate (17), and the screw (10) is movably connected to the bottom surface of the fixing block (8) on the outer side wall of the L-shaped plate (5) through the first rotating rod (11) at the top. The pressure plate (13) is movably connected to the screw (10) through the connecting block (14) on the outer side wall. The pressure roller (22) is movably connected to the concave plate (20) through the second rotating rod (23) on both sides, and the concave plate (20) is movably connected to the bottom surface of the top plate (17) through the buffer rod (24) on the top surface. The buffer spring (26) is sleeved on the outside of the buffer rod (24).
2. The chain breakage buffer device for a plate chain conveyor according to claim 1, characterized in that: The top surface of the concave frame (2) is provided with several sets of symmetrical positioning holes (4).
3. A chain breakage buffer device for a plate chain conveyor according to claim 2, characterized in that: The bottom surface of the top plate (17) is fixedly installed with an L-shaped plate (5) corresponding to a number of symmetrical positioning holes (4), and the top surface of the horizontal part of the L-shaped plate (5) is provided with a limiting hole (6) corresponding to the positioning hole (4). The vertical part of the L-shaped plate (5) is provided with a vertical opening (7), and a fixing block (8) is fixedly installed on the outer wall of the vertical part of the L-shaped plate (5) and at the top of the vertical opening (7). The top surface of the fixing block (8) is provided with a first rotating hole (9).
4. A chain breakage buffer device for a plate chain conveyor according to claim 3, characterized in that: The top end of the screw (10) is fixedly installed with a first rotating rod (11), and the first rotating rod (11) is movably installed in the first rotating hole (9). The top end of the first rotating rod (11) is fixedly installed with a knob (12). A connecting block (14) is fixedly installed on the outer side wall of the pressure plate (13), and the connecting block (14) passes through the vertical opening (7). The top surface of the connecting block (14) is provided with a screw hole (15), and the connecting block (14) is threadedly connected to the screw (10) through the screw hole (15). A set of symmetrical limiting rods (16) is fixedly installed on the bottom surface of the pressure plate (13), and the limiting rods (16) pass through the positioning hole (4) and are inserted into the limiting hole (6).
5. A chain breakage buffer device for a plate chain conveyor according to claim 4, characterized in that: The top surface of the top plate (17) has several through holes (18), and a set of symmetrical guide bars (19) are fixedly installed on the inner wall of the through holes (18).
6. A chain breakage buffer device for a plate chain conveyor according to claim 5, characterized in that: The concave plate (20) is provided in several ways and is inverted. The two side walls of the concave plate (20) are respectively provided with second rotating holes (21). The two sides of the pressure roller (22) are respectively fixedly installed with second rotating rods (23), and the second rotating rods (23) are movably installed in the second rotating holes (21). The pressure roller (22) is close to the top surface of the chain plate of the plate chain conveyor body (1). The top surface of the concave plate (20) is fixedly installed with a buffer rod (24), and the buffer rod (24) is inserted into the through hole (18). The outer wall of the buffer rod (24) is also provided with a guide groove (25) corresponding to the guide bar (19). The buffer spring (26) is sleeved on the outside of the buffer rod (24) and fixedly installed between the top plate (17) and the opposite wall of the concave plate (20). The top of the buffer rod (24) is also fixedly installed with a baffle (27).