Piston rod

Abstract

The piston rod mainly comprises a rod body, a piston plate and a buffer mechanism, a connecting plate is arranged at one end of the rod body, a mounting cavity is formed in the rod body, and an exhaust hole is formed in the outer side of the other end of the rod body; the piston plate is movably arranged at one end of the rod body and corresponds to the connecting plate; the buffer mechanism is connected with the piston plate and the connecting plate, comprises a plurality of springs, a guide rod, a partition plate and the like, and can buffer axial impact force and reduce the fracture risk; a heat dissipation plate is embedded in a mounting groove in the periphery of the rod body, a heat conduction ring is arranged in a mounting cavity and matched with a dust filtering plate in an exhaust hole, airflow in the cavity is accelerated, rapid heat dissipation is achieved, and the performance is prevented from being affected by high temperature. According to the piston rod, through the design of the buffering mechanism and the heat dissipation structure, the problems that an existing piston rod is prone to breakage and poor in heat dissipation are effectively solved, and the piston rod has the good buffering performance and the good heat dissipation effect and can be widely applied to various mechanical devices.

Description

Technical Field

[0001] This utility model relates to the field of piston rod technology, specifically a piston rod. Background Technology

[0002] Among numerous mechanical devices, the piston rod, as a key actuator, plays a crucial role in the stable operation of the equipment. However, existing piston rod technologies present several problems that urgently need to be addressed.

[0003] Currently, piston rods typically employ a rigid connection design, with the rod body directly connected to the piston head. During equipment operation, if a sudden axial impact force is encountered, this force acts directly on the piston rod without any buffering. Due to the lack of an effective cushioning structure, the piston rod experiences enormous stress concentration instantaneously, significantly increasing its risk of fracture. A broken piston rod not only interrupts the current production process, causing significant waste of time and materials, but may also trigger a series of chain reactions, causing irreversible damage to other precision components of the equipment, further increasing maintenance costs and equipment downtime. Simultaneously, the reciprocating motion of the piston rod inevitably generates a large amount of heat. This heat primarily originates from friction between the piston rod and the cylinder wall, as well as other moving parts. Existing piston rods are mostly solid structures with very limited heat dissipation pathways; natural cooling alone is insufficient to effectively dissipate the heat in a timely manner. If the piston rod operates at high temperatures for extended periods, its mechanical properties will gradually decline, such as reduced hardness and strength, thereby accelerating its wear process and shortening its service life.

[0004] To address the aforementioned issues, this application provides a piston rod. Utility Model Content

[0005] The purpose of this utility model is to provide a piston rod to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A piston rod includes a rod body, a piston plate, and a buffer mechanism, wherein:

[0008] One end of the rod is fixed with a connecting plate, the diameter of which is smaller than that of the piston plate. The rod has an internal mounting cavity, and the other end of the rod has an exhaust hole that communicates with the mounting cavity.

[0009] The piston plate is movably disposed at one end of the rod and corresponds to the connecting plate;

[0010] The buffer mechanism is connected between the piston plate and the connecting plate.

[0011] Furthermore, the buffer mechanism includes a buffer assembly one and a buffer assembly two. There are multiple buffer assemblies one, which are arranged in an array around the central axis of the rod. Each buffer assembly one includes a spring one connected between the piston plate and the connecting plate. A guide rod one is fixed on the piston plate. One end of the guide rod one movably passes through the connecting plate. The spring is sleeved outside the guide rod one.

[0012] Furthermore, the second buffer assembly includes a second guide rod fixed to the middle of one side of the piston plate and located on the central axis of the rod body. One end of the second guide rod extends movably into the interior of the mounting cavity. A second spring is sleeved on the outside of the second guide rod and connected between the piston plate and the connecting plate.

[0013] Furthermore, the mounting cavity is movably provided with partitions fixed at both ends of the guide rod, and the outer periphery of the partitions is in contact with the inner wall of the mounting cavity.

[0014] Furthermore, a spring three is connected between the partition and the inner wall of one end of the mounting cavity, and the spring three is sleeved on the outside of the guide rod two.

[0015] Furthermore, a plurality of evenly distributed mounting grooves are constructed on the outer periphery of the rod body, the mounting grooves are connected to the mounting cavity, a heat dissipation plate is embedded inside the mounting groove, a heat conduction ring is fixed on the inner wall of the mounting cavity, and one end of the heat dissipation plate is fixed to the outer side of the heat conduction ring.

[0016] Furthermore, a filter plate is fixed on the inner wall of the exhaust port.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This solution effectively absorbs sudden axial impact forces by adding a unique buffer mechanism between the rod and the piston head, preventing excessive stress concentration, significantly reducing the risk of piston rod breakage, ensuring stable equipment operation, and reducing problems such as production interruptions, component damage, and increased maintenance costs caused by breakage.

[0019] This solution features a cleverly designed internal cavity structure for the piston rod, along with heat dissipation holes and a heat dissipation plate. This accelerates internal gas flow, efficiently dissipating the large amount of heat generated by the reciprocating motion of the piston rod. This prevents high temperatures from causing a decline in mechanical performance, component damage, and seal failure, thus extending service life and ensuring reliable operation of the equipment under high-temperature conditions.

[0020] The buffer mechanism in this solution consists of a combination of springs and guide rods. It has no complex hydraulic or electronic components, is simple in structure, highly reliable, easy to install and maintain, and low in cost, making it suitable for widespread application in various types of mechanical equipment.

[0021] This solution effectively combines buffering and heat dissipation functions, improving the mechanical and thermal properties of the piston rod, making the equipment more stable and durable, meeting the modern industrial demand for high efficiency, long life and high stability of mechanical equipment, and has broad application prospects. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This utility model Figure 1 A three-dimensional sectional view;

[0024] Figure 3 This utility model Figure 1 A three-dimensional structural diagram of the middle section;

[0025] Figure 4 This utility model Figure 1 A three-dimensional structural diagram of another part of the structure.

[0026] In the diagram: 1. Rod body; 11. Connecting plate; 12. Mounting cavity; 13. Exhaust hole; 14. Mounting groove; 15. Heat sink; 16. Heat conduction ring; 17. Filter plate; 2. Piston plate; 3. Buffer mechanism; 31. Buffer assembly one; 311. Spring one; 312. Guide rod one; 32. Buffer assembly two; 321. Guide rod two; 322. Spring two; 323. Partition plate; 324. Spring three. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] This application provides a piston rod, primarily addressing the problem that current piston rods typically employ a rigid connection design, with the rod body directly connected to the piston head. During equipment operation, a sudden axial impact force acts directly on the piston rod without any buffering. Due to the lack of an effective buffer structure, the piston rod experiences immense stress concentration instantaneously, significantly increasing its fracture risk. A broken piston rod not only interrupts current production, causing significant time and material waste, but may also trigger a series of chain reactions, causing irreversible damage to other precision components of the equipment, further increasing maintenance costs and equipment downtime. Simultaneously, the reciprocating motion of the piston rod inevitably generates a large amount of heat. This heat primarily originates from friction between the piston rod and the cylinder wall, as well as other moving parts. Existing piston rods are mostly solid structures with very limited heat dissipation pathways; natural cooling alone is insufficient to effectively dissipate the heat in a timely manner. If the piston rod operates at high temperatures for extended periods, its mechanical properties will gradually decline. The following technical solution is provided, which will be discussed in conjunction with… Figures 1-4 Please provide a detailed explanation:

[0029] A piston rod mainly includes a rod body 1, a piston plate 2, and a buffer mechanism 3, wherein:

[0030] One end of the rod 1 is fixed with a connecting plate 11. The diameter of the connecting plate 11 is smaller than the diameter of the piston plate 2. The rod 1 has an internal structure with a mounting cavity 12. The other end of the rod 1 has an exhaust hole 13 that communicates with the mounting cavity 12.

[0031] Piston plate 2 is movably disposed at one end of rod 1 and corresponds to connecting plate 11;

[0032] The buffer mechanism 3 is connected between the piston plate 2 and the connecting plate 11 to buffer axial impact force and reduce the risk of piston rod breakage. When the equipment encounters a sudden axial impact force during operation, the buffer mechanism 3 can effectively absorb the impact force, prevent stress concentration, and ensure stable operation of the piston rod.

[0033] The piston rod of this application effectively solves the problems of easy breakage and poor heat dissipation of existing piston rods through the design of buffer mechanism 3 and heat dissipation structure. It has good buffer performance and heat dissipation effect and can be widely used in various mechanical equipment.

[0034] For details, please refer to Figure 2 and Figure 3The buffer mechanism 3 includes a buffer assembly 31 and a buffer assembly 32, which work together to dissipate axial impact. There are multiple buffer assemblies 31, which are arranged in an array around the central axis of the rod 1. The buffer assembly 31 includes a spring 311 connected between the piston plate 2 and the connecting plate 11. A guide rod 312 is fixed on the piston plate 2. One end of the guide rod 312 movably passes through the connecting plate 11. The spring 311 is sleeved on the outside of the guide rod 312.

[0035] When an axial impact occurs, the piston plate 2 moves rapidly towards the connecting plate 11 under force. The guide rod 312 passes through the connecting plate 11 accordingly. At the same time, the spring 311 contracts and deforms along the guide rod 312, subtly converting the impact kinetic energy into elastic potential energy, thus achieving impact buffering, greatly reducing the stress on the piston rod, and significantly reducing the risk of breakage. Under normal conditions, the spring 311 resets using its elastic reaction force, driving the piston plate 2 back to its initial position, ensuring stable output of buffering performance during the reciprocating motion of the equipment. It steadily protects the piston rod under high-frequency impact conditions, becoming a solid backing for the reliable operation of the mechanical equipment and maintaining the smooth progress of the production process from beginning to end.

[0036] Furthermore, the second buffer assembly 32 includes a second guide rod 321 fixed in the middle of one side of the piston plate 2 and located on the central axis of the rod body 1. One end of the second guide rod 321 extends movably into the interior of the mounting cavity 12. A second spring 322 sleeved on the outside of the second guide rod 321 is connected between the piston plate 2 and the connecting plate 11.

[0037] When an axial impact occurs, the piston plate 2 is forced to move rapidly towards the connecting plate 11. Spring 322 then contracts along guide rod 321, efficiently converting the impact energy into elastic potential energy. This, combined with buffer assembly 31, steadily dissipates the impact, further enhancing the buffering effect. After the impact, spring 322 returns to its original position using its elastic reaction force, pushing the piston plate 2 back into place, providing continuous buffering protection for the reciprocating motion of the equipment. This design not only gives the buffer mechanism 3 strong buffering capabilities along the central axis but also works closely with buffer assembly 31 to comprehensively resist impacts, building a solid defense for the stable operation of the piston rod under extreme conditions, significantly extending its service life, and becoming a powerful guarantee for the reliable operation of the mechanical system.

[0038] In this embodiment, a partition 323 fixed to the end of the guide rod 321 is movably disposed inside the mounting cavity 12. The outer periphery of the partition 323 fits against the inner wall of the mounting cavity 12 to ensure airtightness.

[0039] A spring 324 is connected between the partition 323 and the inner wall of one end of the mounting cavity 12. The spring 324 is sleeved on the outside of the guide rod 321.

[0040] When an axial impact occurs, the impact force is transmitted to the partition 323, compressing the spring 324. The spring 324 contracts and stores elastic potential energy, providing additional cushioning for the piston rod and further reducing stress. After the impact, the spring 324 quickly rebounds, pushing the partition 323 back to its original position. Simultaneously, as the partition 323 moves within the mounting cavity 12, it changes the air pressure inside the cavity. Combined with the exhaust port 13, this continuously facilitates air exhaust and intake, aiding in heat dissipation. Thus, the partition 323 and spring 324 not only enhance the cushioning effect but also cleverly participate in the heat dissipation process, improving the overall performance of the piston rod.

[0041] It is important to note that you should refer to [link / reference]. Figure 2 and Figure 4 The outer periphery of the rod 1 has several evenly distributed mounting grooves 14. The mounting grooves 14 are connected to the mounting cavity 12. A heat dissipation plate 15 is embedded inside the mounting groove 14. A heat conduction ring 16 is fixed on the inner wall of the mounting cavity 12. One end of the heat dissipation plate 15 is fixed to the outer side of the heat conduction ring 16.

[0042] When the piston rod generates heat during operation, the heat-conducting ring 16 quickly absorbs the heat from the mounting cavity 12 and transfers it to the heat sink 15. The heat sink 15 then effectively dissipates the heat to the surrounding environment through contact with the outside air. This ingenious structural design not only accelerates heat transfer and dissipation but also maintains the temperature stability of the piston rod during reciprocating motion, ensuring its performance is not affected by high temperatures, thereby extending the service life of the piston rod and enhancing the reliability of equipment operation.

[0043] A dust filter plate 17 is fixed to the inner wall of the exhaust port 13. When the piston rod is in operation, the gas inside the mounting cavity 12 circulates through the exhaust port 13. At this time, the dust filter plate 17 can effectively filter out dust and impurities in the gas, preventing them from entering the mounting cavity 12 and thus avoiding interference with the normal operation of the buffer mechanism 3. At the same time, the dust filter plate 17 can also prevent external dust from entering the exhaust port 13, ensuring the unobstructed flow of the exhaust port 13 and ensuring the stable performance of heat dissipation and buffering functions. In this way, the dust filter plate 17 plays an indispensable role in ensuring the reliable operation of the buffer mechanism 3 and maintaining the stability of the entire piston rod performance.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A piston rod, comprising a rod body (1), a piston plate (2), and a buffer mechanism (3), characterized in that, in: One end of the rod (1) is fixed with a connecting plate (11), the diameter of the connecting plate (11) is smaller than the diameter of the piston plate (2), the rod (1) has an internal structure with an installation cavity (12), and the other end of the rod (1) has an exhaust hole (13) connected to the installation cavity (12). The piston plate (2) is movably disposed at one end of the rod (1) and corresponds to the connecting plate (11); The buffer mechanism (3) is connected between the piston plate (2) and the connecting plate (11).

2. A piston rod according to claim 1, characterized in that: The buffer mechanism (3) includes a buffer assembly one (31) and a buffer assembly two (32). The number of buffer assemblies one (31) is multiple and they are arranged in an array around the central axis of the rod body (1). The buffer assembly one (31) includes a spring one (311) connected between the piston plate (2) and the connecting plate (11). A guide rod one (312) is fixed on the piston plate (2). One end of the guide rod one (312) movably passes through the connecting plate (11). The spring one (311) is sleeved on the outside of the guide rod one (312).

3. A piston rod according to claim 2, characterized in that: The second buffer assembly (32) includes a second guide rod (321) fixed in the middle of one side of the piston plate (2) and located on the central axis of the rod body (1). One end of the second guide rod (321) extends movably into the interior of the mounting cavity (12). A second spring (322) is connected between the piston plate (2) and the connecting plate (11) and sleeved on the outside of the second guide rod (321).

4. A piston rod according to claim 3, characterized in that: The mounting cavity (12) is movably provided with a partition (323) fixed to the end of the guide rod (321), and the outer periphery of the partition (323) is in contact with the inner wall of the mounting cavity (12).

5. A piston rod according to claim 4, characterized in that: A spring three (324) is connected between the partition plate (323) and the inner wall of one end of the mounting cavity (12), and the spring three (324) is sleeved on the outside of the guide rod two (321).

6. A piston rod according to claim 1, characterized in that: The outer periphery of the rod (1) is provided with a number of evenly distributed mounting grooves (14). The mounting grooves (14) are connected to the mounting cavity (12). A heat sink (15) is embedded inside the mounting groove (14). A heat conduction ring (16) is fixed on the inner wall of the mounting cavity (12). One end of the heat sink (15) is fixed to the outer side of the heat conduction ring (16).

7. A piston rod according to claim 1, characterized in that: A filter plate (17) is fixed on the inner wall of the exhaust hole (13).

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