Impact-resistant and extrusion-resistant piston rod sealing ring

Abstract

The utility model relates to the technical field of sealing rings, in particular to an impact-resistant and extrusion-resistant piston rod sealing ring which comprises a mounting seat, a sealing groove is formed in the upper end of the mounting seat, three clamping grooves are formed in the front portion and the rear portion of the inner wall of the sealing groove respectively, and through limiting grooves are formed in the left portion and the right portion of the inner wall of the sealing groove respectively. And a mounting mechanism is connected into the sealing groove in a clamped mode, a sealing ring body is arranged at the lower end of the mounting mechanism, and dismounting mechanisms are fixedly connected to the left portion and the right portion of the outer surface of the mounting base correspondingly. According to the impact-resistant and extrusion-resistant piston rod sealing ring, the two clamping blocks are clamped into the two limiting grooves respectively, the problem that the sealing ring body is prone to being extruded out and leaking can be solved, the sealing performance can be improved, and when the sealing ring body is used for a long time, the sealing effect is poor, and the sealing ring needs to be replaced, the sealing ring can be replaced conveniently. And the mounting ring can be conveniently taken out to replace the sealing ring body.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to an impact-resistant and extrusion-resistant piston rod sealing ring. Background Art

[0002] Sealing rings are commonly used parts of mechanical equipment. They are used to prevent the mutual flow of solids, liquids and gases in the adjacent spaces of equipment components, and play the role of isolating adjacent spaces. Hydraulic cylinders are hydraulic actuators that convert hydraulic energy into mechanical energy and perform linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. A sealing ring is generally set between the hydraulic cylinder and the piston rod for sealing. The existing piston rod has problems such as easy extrusion leakage, structural distortion and easy wear when the sealing ring is in high and low speed linear reciprocating motion, and the sealing performance will deteriorate, affecting the sealing between the piston rod and the hydraulic cylinder. Therefore, we have launched a new impact-resistant and extrusion-resistant piston rod sealing ring. Utility Model Content

[0003] The main purpose of the utility model is to provide a piston rod sealing ring which is impact-resistant and extrusion-resistant, and can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A piston rod sealing ring that is impact-resistant and extrusion-resistant comprises a mounting seat, a sealing groove is formed at the upper end of the mounting seat, three clamping grooves are formed at the front and rear inner wall portions of the sealing groove, a through limiting groove is formed at the left and right inner wall portions of the sealing groove, a mounting mechanism is clamped and connected in the sealing groove, a sealing ring body is provided at the lower end of the mounting mechanism, a disassembly mechanism is fixedly connected to the left and right outer surface portions of the mounting seat, and the two disassembly mechanisms correspond to the positions of the two limiting grooves respectively.

[0006] Preferably, the mounting mechanism includes a mounting ring, three clamping blocks are fixedly connected to the front and rear portions of the outer surface of the mounting ring, movable grooves are opened on the inner left and right portions of the mounting ring, two No. 1 springs are fixedly connected to the inner walls of the two movable grooves, two adjacent No. 1 springs are commonly fixedly connected to a limiting block at one end away from the inner wall of the movable groove, and two limiting blocks are fixedly connected to a locking block at one end away from the No. 1 spring.

[0007] Preferably, the mounting ring is snap-fitted and connected to the sealing groove, and a plurality of the snap-fitting blocks are snap-fitted and connected to a plurality of snap-fitting grooves respectively.

[0008] Preferably, outer surfaces of the two limit blocks are movably connected to inner walls of the two movable grooves respectively, and ends of the two engaging blocks away from the limit blocks are respectively engaged with the two limit grooves.

[0009] Preferably, the disassembly mechanism includes a fixed block, a disassembly groove is opened at the right end of the fixed block, an extrusion plate is movably connected in the disassembly groove, a No. 2 spring and a movable rod are fixedly connected to the middle of the left end of the extrusion plate, the end of the No. 2 spring away from the extrusion plate is fixedly connected to the left groove wall of the disassembly groove, and a pressing block is fixedly connected to the left end of the movable rod.

[0010] Preferably, the right end of the fixed block is fixedly connected to the mounting seat, the movable rod is movably connected to the fixed block through insertion, and the No. 2 spring is located outside the movable rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By setting up the installation mechanism, when the sealing ring body needs to be installed, by pressing the two clamping blocks, the two clamping blocks squeeze the two No. 1 springs through the two limit blocks respectively, and at the same time, the two clamping blocks shrink into the two movable grooves respectively, and then the installation ring is clamped into the sealing groove with the sealing ring body, and several clamping blocks are clamped into several clamping grooves respectively. At the same time, the two clamping blocks are respectively popped out from the two limit grooves under the elastic reset of the No. 1 spring, so that the installation ring can be limited and fixed. By clamping the two clamping blocks into the two limit grooves respectively, the problem of easy impact, extrusion and leakage of the sealing ring body can be avoided, and the sealing performance can be improved;

[0013] 2. By setting up a disassembly mechanism, when the sealing ring body has been used for a long time and the sealing effect is poor and the sealing ring needs to be replaced, by pressing the two pressing blocks, the two pressing blocks press the two extrusion plates through the two movable rods respectively, and the two extrusion plates squeeze the two engaging blocks respectively, so that the two engaging blocks shrink into the two movable grooves respectively and disengage from the limit grooves, thereby making it convenient to take out the installation ring and replace the sealing ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an impact-resistant and extrusion-resistant piston rod sealing ring of the utility model;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of an impact-resistant and extrusion-resistant piston rod sealing ring of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of an installation mechanism for an impact-resistant and extrusion-resistant piston rod sealing ring of the utility model;

[0017] Figure 4The utility model is a schematic diagram of the overall structure of a disassembly mechanism of an impact-resistant and extrusion-resistant piston rod sealing ring.

[0018] In the figure: 1. Mounting seat; 2. Sealing groove; 3. Clamping groove; 4. Limiting groove; 5. Mounting mechanism; 6. Sealing ring body; 7. Disassembly mechanism; 8. Mounting ring; 9. Clamping block; 10. Movable groove; 11. No. 1 spring; 12. Limiting block; 13. Engaging block; 14. Fixed block; 15. Disassembly groove; 16. Extrusion plate; 17. No. 2 spring; 18. Movable rod; 19. Pressing block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A piston rod sealing ring which is impact-resistant and extrusion-resistant comprises a mounting seat 1, a sealing groove 2 is formed at the upper end of the mounting seat 1, three clamping grooves 3 are formed at the front and rear parts of the inner wall of the sealing groove 2, a through limiting groove 4 is formed at the left and right parts of the inner wall of the sealing groove 2, a mounting mechanism 5 is clamped and connected in the sealing groove 2, a sealing ring body 6 is arranged at the lower end of the mounting mechanism 5, a disassembly mechanism 7 is fixedly connected to the left and right parts of the outer surface of the mounting seat 1, and the two disassembly mechanisms 7 correspond to the positions of the two limiting grooves 4 respectively.

[0024] In this embodiment, the mounting mechanism 5 includes a mounting ring 8, and three clamping blocks 9 are fixedly connected to the front and rear of the outer surface of the mounting ring 8. A movable groove 10 is opened on the inner left and right parts of the mounting ring 8. Two No. 1 springs 11 are fixedly connected to the inner walls of the two movable grooves 10. The ends of the two adjacent No. 1 springs 11 away from the inner walls of the movable grooves 10 are fixedly connected to the limiting blocks 12. The ends of the two limiting blocks 12 away from the No. 1 springs 11 are fixedly connected to the locking blocks 13. The mounting ring 8 is locked and connected with the sealing groove 2. If The plurality of clamping blocks 9 are respectively clamped and connected with a plurality of clamping grooves 3, the outer surfaces of the two limit blocks 12 are respectively movably connected with the inner walls of the two movable grooves 10, the two clamping blocks 13 are respectively clamped and connected with the two limit grooves 4 at one end away from the limit blocks 12, and the two clamping blocks 13 are respectively popped out from the two limit grooves 4 under the elastic reset of the No. 1 spring 11, so that the mounting ring 8 can be limited and fixed, and the two clamping blocks 13 are respectively clamped into the two limit grooves 4, which can avoid the problem of easy extrusion and leakage of the sealing ring body 6 and improve the sealing performance.

[0025] In this embodiment, the disassembly mechanism 7 includes a fixed block 14, a disassembly groove 15 is opened at the right end of the fixed block 14, and an extrusion plate 16 is movably connected in the disassembly groove 15. A No. 2 spring 17 and a movable rod 18 are fixedly connected to the middle of the left end of the extrusion plate 16. The end of the No. 2 spring 17 away from the extrusion plate 16 is fixedly connected to the left groove wall of the disassembly groove 15, and a pressing block 19 is fixedly connected to the left end of the movable rod 18. The right end of the fixed block 14 is fixedly connected to the mounting seat 1, and the movable rod 18 is movably connected to the fixed block 14 through insertion. The No. 2 spring 17 is located on the outside of the movable rod 18, and the two clamping blocks 13 are respectively squeezed by the two extrusion plates 16, so that the two clamping blocks 13 are respectively contracted into the two movable grooves 10 and disengaged from the limiting groove 4, thereby making it convenient to take out the mounting ring 8 and replace the sealing ring body 6.

[0026] It should be noted that the utility model is an impact-resistant and extrusion-resistant piston rod sealing ring. During use, when the sealing ring body 6 needs to be installed, by pressing the two snap-fit ​​blocks 13, the two snap-fit ​​blocks 13 squeeze the two No. 1 springs 11 through the two limit blocks 12 respectively, and at the same time, the two snap-fit ​​blocks 13 shrink into the two movable grooves 10 respectively, and then the installation ring 8 with the sealing ring body 6 is snapped into the sealing groove 2, and a plurality of snap-fit ​​blocks 9 are snapped into a plurality of snap-fit ​​grooves 3 respectively, and at the same time, the two snap-fit ​​blocks 13 are popped out from the two limit grooves 4 respectively under the elastic reset of the No. 1 spring 11, so that the installation ring 8 can The two clamping blocks 13 are respectively clamped into the two limiting grooves 4, which can avoid the problem of the sealing ring body 6 being easily impacted, squeezed and leaked, and can improve the sealing performance. When the sealing ring body 6 has been used for a long time and the sealing effect is poor and the sealing ring needs to be replaced, by pressing the two pressing blocks 19, the two pressing blocks 19 press the two extrusion plates 16 through the two movable rods 18 respectively, and the two extrusion plates 16 squeeze the two clamping blocks 13 respectively, so that the two clamping blocks 13 are respectively contracted into the two movable grooves 10 and separated from the limiting groove 4, so that it is convenient to take out the mounting ring 8 and replace the sealing ring body 6.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An impact-resistant and extrusion-resistant piston rod sealing ring, comprising a mounting seat (1), characterized in that: The upper end of the mounting seat (1) is provided with a sealing groove (2), the front part of the inner wall of the sealing groove (2) and the rear part of the inner wall of the sealing groove (2) are provided with three clamping grooves (3), the left part of the inner wall of the sealing groove (2) and the right part of the inner wall of the sealing groove (2) are provided with through-going limiting grooves (4), the sealing groove (2) is clamped with a mounting mechanism (5), the lower end of the mounting mechanism (5) is provided with a sealing ring body (6), the left part and the right part of the outer surface of the mounting seat (1) are fixedly connected with a disassembly mechanism (7), and the two disassembly mechanisms (7) correspond to the positions of the two limiting grooves (4) respectively; The mounting mechanism (5) comprises a mounting ring (8), the front and rear outer surfaces of the mounting ring (8) are fixedly connected with three clamping blocks (9), the inner left and right inner parts of the mounting ring (8) are both provided with movable grooves (10), the inner walls of the two movable grooves (10) are both fixedly connected with two No. 1 springs (11), the ends of the two adjacent No. 1 springs (11) away from the inner walls of the movable grooves (10) are both fixedly connected with a limiting block (12), and the ends of the two limiting blocks (12) away from the No. 1 springs (11) are both fixedly connected with a clamping block (13).

2. The impact-resistant and extrusion-resistant piston rod sealing ring according to claim 1, characterized in that: The mounting ring (8) is snap-fitted and connected to the sealing groove (2), and a plurality of the snap-fit ​​blocks (9) are snap-fitted and connected to a plurality of the snap-fit ​​grooves (3) respectively.

3. The impact-resistant and extrusion-resistant piston rod sealing ring according to claim 1, characterized in that: The outer surfaces of the two limit blocks (12) are movably connected to the inner walls of the two movable grooves (10), and the ends of the two engaging blocks (13) away from the limit blocks (12) are respectively engaged and connected to the two limit grooves (4).

4. The impact-resistant and extrusion-resistant piston rod sealing ring according to claim 1, characterized in that: The disassembly mechanism (7) comprises a fixed block (14), a disassembly groove (15) is formed at the right end of the fixed block (14), a pressing plate (16) is movably connected in the disassembly groove (15), a No. 2 spring (17) and a movable rod (18) are fixedly connected at the middle of the left end of the pressing plate (16), one end of the No. 2 spring (17) away from the pressing plate (16) is fixedly connected to the left groove wall of the disassembly groove (15), and a pressing block (19) is fixedly connected to the left end of the movable rod (18).

5. The impact-resistant and extrusion-resistant piston rod sealing ring according to claim 4, characterized in that: The right end of the fixed block (14) is fixedly connected to the mounting seat (1), the movable rod (18) is interlaced and movably connected to the fixed block (14), and the second spring (17) is located outside the movable rod (18).

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