Piston structure of a cylinder

Abstract

The utility model relates to the technical field of cylinder, concretely is a piston structure of cylinder, including cylinder body, piston rod and damping mechanism, piston rod and the inner wall sliding joint of cylinder body, and the inner wall of cylinder body is provided with damping mechanism, and damping mechanism includes buffer assembly, assembly and disassembly subassembly and protection subassembly, buffer assembly includes buffer board, and the inner wall sliding joint of buffer board and cylinder body, and the surface fixed connection of buffer board has slide rod, and the inner wall sliding joint of slide rod and cylinder body, and the surface fixed connection of cylinder body has guide rod, and the surface sleeve connection of guide rod has spring, assembly and disassembly subassembly includes sleeve ring, and the number of sleeve ring is two and is fixedly connected with both ends of spring respectively, and the surface sliding joint of sleeve ring and guide rod, the utility model discloses, through setting up damping mechanism, can utilize buffer board and spring cooperation and carry out the buffer damping of reciprocating piston rod to protect cylinder body and piston rod, and the spring of fatigue failure after long -time use is also convenient to replace, and the durability of equipment is effectively improved to this.

Description

Technical Field

[0001] This utility model relates to the field of cylinder technology, and in particular to a piston structure for a cylinder. Background Technology

[0002] The piston on the cylinder can output force and has a simple structure. However, in order to absorb the impact energy of the cylinder moving parts at the end of the stroke, buffer pads need to be installed on both sides of the piston to protect the cylinder from damage.

[0003] Existing technology, such as Chinese Patent Publication No. CN211116906U, discloses a single-acting double-piston cylinder, including a moving rod, a cylinder body, and a piston. The piston is fixedly installed to the tail end of the moving rod by a fixing clip and a fixing nut. An end cap is fixedly installed on the right side of the cylinder body via a threaded connector. Protrusions are provided on the left side of the moving rod and the right side of the end cap. A front buffer spring and a rear buffer spring, a buffer ring and a buffer disc, a buffer pad and a rear buffer pad are respectively installed in the protrusions of the moving rod and the end cap. This invention achieves a shock absorption effect by setting buffer mechanisms at both ends of the cylinder. When the piston reciprocates, the piston contacts the buffer mechanism through the nuts sleeved at both ends of the moving rod, thereby eliminating the need for buffer pads at both ends of the piston and completely avoiding the problem of buffer pad aging or easy detachment during operation. Furthermore, the independent buffer mechanism significantly improves the buffering effect, further enhancing the stability of the cylinder and extending its service life. However, this invention places the springs inside the cylinder body, making it inconvenient to replace springs that have fatigued and failed after prolonged use.

[0004] To address the issue of the inconvenience of replacing the piston cushioning structure after prolonged use, most existing technologies employ buffer pads installed on both sides of the piston. However, these pads are prone to detachment and damage after extended use. A few technologies use internal spring cushioning, but the springs will fatigue and fail after long-term use. When replacement is needed, the cylinder must be opened, which is inconvenient and affects sealing. Therefore, improvements are required. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the buffer structure of the cylinder piston in the prior art is not convenient to replace after long-term use, and to propose a piston structure for the cylinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a piston structure for a cylinder, comprising a cylinder body, a piston rod, and a shock-absorbing mechanism, wherein the piston rod is slidably connected to the inner wall of the cylinder body, and the shock-absorbing mechanism is disposed on the inner wall of the cylinder body; The shock absorption mechanism includes a buffer assembly, a loading and unloading assembly, and a protective assembly. The buffer assembly includes a buffer plate, which is slidably connected to the inner wall of the cylinder. A sliding rod is fixedly connected to the surface of the buffer plate, and the sliding rod is slidably connected to the inner wall of the cylinder. A guide rod is fixedly connected to the surface of the cylinder, and a spring is sleeved on the surface of the guide rod. The loading and unloading assembly includes two collars, each fixedly connected to both ends of a spring. The collars are slidably connected to the surface of a guide rod. A threaded hole is provided on the surface of the guide rod, and a screw is threadedly connected to the surface of the threaded hole. A limit plate is fixedly connected to the surface of the screw.

[0007] Furthermore, a buffer pad is fixedly connected to the surface of the buffer plate, and an anti-detachment ring is fixedly connected to the surface of the slide rod, with the slide rod cooperating with the collar.

[0008] Furthermore, both the buffer plate and the buffer pad have relief grooves on their surfaces, which are adapted to the piston rod.

[0009] Furthermore, the surface of the limiting disc is provided with anti-slip textures, which are multiple sets and evenly distributed around the circumference.

[0010] Furthermore, the protective component includes a protective sleeve, the inner wall of which has internal threads, and the surface of the cylinder body has external threads, and the protective sleeve is threadedly connected to the surface of the cylinder body.

[0011] Furthermore, the surface of the protective sleeve is provided with a relief groove II, which is adapted to the piston rod.

[0012] Furthermore, the shock absorption mechanism consists of two sets arranged symmetrically, with each set containing two slide rods, guide rods, springs, anti-detachment rings, screw holes, screws, and limiting discs.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting a shock-absorbing mechanism, when the piston rod reciprocates, it contacts the buffer pads on both sides, causing the buffer plate to drive the slide rod to move, pushing the collar to slide along the guide rod and press the spring, thereby achieving a buffering and shock-absorbing effect. When the spring needs to be replaced, the limiting plate can be rotated to move the screw along the screw hole until it disengages, and the collar and the spring on it can be removed. The collar on the new spring is slid into the guide rod, and then the limiting plate is rotated to move the screw along the screw hole until the limiting plate presses against the collar. The above structure can also be protected by a protective sleeve. Under the action of the internal and external threads, the installation and removal can be achieved simply by rotating the protective sleeve.

[0014] 2. In this utility model, by setting a shock absorption mechanism, the piston rod in reciprocating motion can be buffered and damped by the cooperation of the buffer plate and the spring, so as to protect the cylinder and the piston rod. The spring that fails due to fatigue after long-term use is also easy to replace, which effectively improves the durability of the equipment. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a piston structure for a cylinder is provided for this utility model. Figure 2 This utility model provides a cross-sectional structural schematic diagram of a shock-absorbing mechanism in the piston structure of a cylinder. Figure 3 This utility model provides a partial structural diagram of the shock absorption mechanism in the piston structure of a cylinder. Figure 4 This utility model proposes a piston structure for a cylinder. Figure 3 A magnified structural diagram at point A; Figure 5 This invention provides an exploded view of the shock absorption mechanism in the piston structure of a cylinder.

[0016] Legend: 1. Cylinder block; 2. Piston rod; 3. Shock absorption mechanism; 31. Buffer assembly; 311. Buffer plate; 312. Slide rod; 313. Guide rod; 314. Spring; 315. Buffer pad; 316. Anti-detachment ring; 317. Relief groove one; 32. Loading and unloading assembly; 321. Collar; 322. Screw hole; 323. Screw; 324. Limiting plate; 325. Anti-slip texture; 33. Protective assembly; 331. Protective sleeve; 332. Internal thread; 333. External thread; 334. Relief groove two. Detailed Implementation

[0017] Please see Figures 1-5 This utility model provides a technical solution: a piston structure for a cylinder, including a cylinder body 1, a piston rod 2 and a shock-absorbing mechanism 3, wherein the piston rod 2 is slidably connected to the inner wall of the cylinder body 1, and the shock-absorbing mechanism 3 is disposed on the inner wall of the cylinder body 1.

[0018] The specific setup and function of its shock absorption mechanism 3 will be explained below.

[0019] In this embodiment: the shock absorption mechanism 3 includes a buffer assembly 31, a loading and unloading assembly 32 and a protective assembly 33. The buffer assembly 31 includes a buffer plate 311, which is slidably connected to the inner wall of the cylinder 1. A slide rod 312 is fixedly connected to the surface of the buffer plate 311, which is slidably connected to the inner wall of the cylinder 1. A guide rod 313 is fixedly connected to the surface of the cylinder 1, and a spring 314 is sleeved and connected to the surface of the guide rod 313. The loading and unloading assembly 32 includes two collars 321, which are fixedly connected to both ends of the spring 314 respectively. The collars 321 are slidably connected to the surface of the guide rod 313. The surface of the guide rod 313 is provided with a screw hole 322. The surface of the screw hole 322 is threaded with a screw rod 323. The surface of the screw rod 323 is fixedly connected with a limit plate 324.

[0020] The effects achieved by the above components are as follows: The buffer plate 311, slide rod 312, guide rod 313, spring 314, and collar 321 are designed so that when the piston rod 2 reciprocates, it contacts the buffer pad 315 on the buffer plate 311, causing the slide rod 312 to push the collar 321 to slide along the guide rod 313, thus compressing the spring 314, thereby achieving buffering and shock absorption and protecting the piston rod 2 and cylinder 1. The screw hole 322, screw 323, and limiting plate 324 are designed so that when the screw 323 moves along the screw hole 322 to the limiting plate 324 to press against the collar 321, one end of the spring 314 is limited so that when the slide rod 312 pushes the other end of the collar 321, the spring 314 can be compressed. When the screw 323 moves along the screw hole 322 to disengage, the collar 321 can slide along the guide rod 313 to disengage, and the spring 314 can be removed and replaced.

[0021] Specifically, a buffer pad 315 is fixedly connected to the surface of the buffer plate 311, and an anti-detachment ring 316 is fixedly connected to the surface of the slide rod 312. The slide rod 312 cooperates with the collar 321.

[0022] The effects achieved by the above components are as follows: the buffer pad 315 is set to buffer the piston rod 2 when it comes into contact with the buffer plate 311 and protect the buffer plate 311; the anti-detachment ring 316 is set to prevent the slide rod 312 from detaching from the cylinder body 1 and to limit the slide rod 312 and the buffer plate 311.

[0023] Specifically, the surfaces of the buffer plate 311 and the buffer pad 315 are provided with relief grooves 317, which are adapted to the piston rod 2.

[0024] The effect achieved by the above components is that the clearance groove 317 is provided to facilitate the clearance of the piston rod 2.

[0025] Specifically, the surface of the limiting plate 324 is provided with anti-slip textures 325, which are multiple sets and evenly distributed around the circumference.

[0026] The effect achieved by the above components is as follows: the anti-slip texture 325 is set to increase friction and prevent slippage when rotating the limit plate 324.

[0027] Specifically, the protective component 33 includes a protective sleeve 331, the inner wall of which is provided with an internal thread 332, and the surface of the cylinder body 1 is provided with an external thread 333. The protective sleeve 331 is threadedly connected to the surface of the cylinder body 1.

[0028] The effects achieved by the above components are as follows: the protective sleeve 331 is provided to protect the structure located outside the cylinder 1, so as to prevent its movement from being affected during the buffering and shock absorption process or from affecting the outside world; the internal thread 332 and the external thread 333 are provided so that the protective sleeve 331 can be quickly installed and removed by simply rotating it.

[0029] Specifically, the protective sleeve 331 has a relief groove 334 on its surface, which is adapted to the piston rod 2.

[0030] The effect achieved by the above components is that the relief groove 334 is provided to facilitate the repositioning of the piston rod 2.

[0031] Specifically, the shock absorption mechanism 3 consists of two sets arranged symmetrically, with each set containing two slide rods 312, guide rods 313, springs 314, anti-detachment rings 316, screw holes 322, screws 323, and limiting discs 324.

[0032] The effects achieved by the above components are as follows: two sets of shock absorption mechanisms 3 are set to buffer the piston rod 2 from both sides when it reciprocates; two slide rods 312, guide rods 313, springs 314, and anti-detachment rings 316 are set in each set to increase the stability of the structure; two screw holes 322, screws 323, and limiting plates 324 are set in each set to ensure that both screws 323 are disengaged from the screw holes 322 before the collar 321 and spring 314 can be removed, thus avoiding accidental contact.

[0033] Working principle: By setting up a shock absorption mechanism 3, when the piston rod 2 reciprocates, it contacts the buffer pads 315 on both sides, causing the buffer plate 311 to drive the slide rod 312 to move, pushing the collar 321 to slide along the guide rod 313 and press the spring 314, thereby achieving a buffering and shock absorption effect. When the spring 314 needs to be replaced, the limiting plate 324 can be rotated to move the screw 323 along the screw hole 322 until it is disengaged, so that the collar 321 and the spring 314 on it can be removed. The collar 321 on the new spring 314 is slid into the guide rod 313, and then the limiting plate 324 is rotated to move the screw 323 along the screw hole 322 until the limiting plate 324 presses against the collar 321. The above structure can also be protected by a protective sleeve 331. Under the action of the internal thread 332 and the external thread 333, the installation and removal can be achieved simply by rotating the protective sleeve 331.

[0034] By setting up the shock absorption mechanism 3, the buffer plate 311 and the spring 314 can be used to buffer and dampen the reciprocating piston rod 2, so as to protect the cylinder 1 and the piston rod 2. The spring 314, which fails due to fatigue after long-term use, can also be easily replaced, thus effectively improving the durability of the equipment.

Claims

1. A piston structure for a cylinder, comprising a cylinder body (1), a piston rod (2), and a shock-absorbing mechanism (3), characterized in that: The piston rod (2) is slidably connected to the inner wall of the cylinder (1), and the shock absorption mechanism (3) is provided on the inner wall of the cylinder (1); The shock absorption mechanism (3) includes a buffer assembly (31), a loading and unloading assembly (32), and a protective assembly (33). The buffer assembly (31) includes a buffer plate (311), which is slidably connected to the inner wall of the cylinder (1). A slide rod (312) is fixedly connected to the surface of the buffer plate (311), which is slidably connected to the inner wall of the cylinder (1). A guide rod (313) is fixedly connected to the surface of the cylinder (1), and a spring (314) is sleeved on the surface of the guide rod (313). The loading and unloading assembly (32) includes two collars (321) which are fixedly connected to both ends of the spring (314). The collars (321) are slidably connected to the surface of the guide rod (313). The surface of the guide rod (313) is provided with a screw hole (322). The surface of the screw hole (322) is threaded with a screw rod (323). The surface of the screw rod (323) is fixedly connected with a limit plate (324).

2. The piston structure of a cylinder according to claim 1, characterized in that: The buffer plate (311) is fixedly connected to a buffer pad (315), and the slide rod (312) is fixedly connected to an anti-detachment ring (316). The slide rod (312) cooperates with the collar (321).

3. The piston structure of a cylinder according to claim 2, characterized in that: The surfaces of the buffer plate (311) and the buffer pad (315) are provided with a relief groove (317), which is adapted to the piston rod (2).

4. The piston structure of a cylinder according to claim 1, characterized in that: The surface of the limiting plate (324) is provided with anti-slip textures (325), and the number of anti-slip textures (325) is multiple and evenly distributed around the circumference.

5. The piston structure of a cylinder according to claim 1, characterized in that: The protective component (33) includes a protective sleeve (331), the inner wall of the protective sleeve (331) is provided with an internal thread (332), the surface of the cylinder (1) is provided with an external thread (333), and the protective sleeve (331) is threadedly connected to the surface of the cylinder (1).

6. The piston structure of a cylinder according to claim 5, characterized in that: The protective sleeve (331) has a relief groove (334) on its surface, which is adapted to the piston rod (2).

7. The piston structure of a cylinder according to claim 2, characterized in that: The shock absorption mechanism (3) consists of two sets arranged symmetrically, with each set containing two slide rods (312), guide rods (313), springs (314), anti-detachment rings (316), screw holes (322), screws (323), and limiting discs (324).

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