Abrasion-resistant piston sealing ring

Abstract

A telescopic rod end component pin hole (1-6) is formed in the upper portion of a main telescopic rod (1-2), a sleeve (1-12) of a telescopic rod end component (1-1) is connected with the main telescopic rod (1-2) in a threaded mode, a fixing pin (1-13) is inserted into the telescopic rod end component pin hole (1-6), and an installation ring head (1-11) is welded to the upper portion of the sleeve (1-12). The lower end of a main telescopic rod (1-2) is fixedly connected with a first piston head (1-3), the lower end of a second piston head control screw (1-8) is fixedly connected with a second piston head (1-5), the top end of the second piston head control screw (1-8) is fixedly connected with a second piston head control screw hexagonal head (1-7), and the second piston head control screw (1-8) is screwed into a through screw hole axially formed in the main telescopic rod (1-2). And a deformable piston sealing ring (1-4) is fixedly arranged between the piston head I (1-3) and the piston head II (1-5). According to the oil cylinder piston sealing structure, the maintenance time of the sealing effect of the oil cylinder piston can be effectively prolonged, and the normal working time of a hydraulic oil cylinder can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a wear-resistant piston sealing ring. Background Art

[0002] Hydraulic cylinders are widely used in engineering machinery and mechanical equipment. After long-term use, the sealing ring on the internal piston will be damaged after continuous wear on the inner wall of the cylinder. As the damage increases, the sealing ring will lose its sealing effect, which will lead to a decrease in the output of the hydraulic cylinder and even affect the stability and performance of the hydraulic system.

[0003] At present, the utility model with patent number CN218862985U discloses an anti-wear piston for a loader, which relates to the field of piston technology, and is designed to solve the problem that the existing piston needs to move reciprocatingly, which causes the sealing ring on the outer wall of the piston to be easily worn due to long-term friction, thereby reducing the service life of the piston and affecting the normal use of the user. Three ring grooves are arranged on the outer wall of the piston body, and oil seals are arranged inside the ring grooves at the upper and lower ends, and a sealing ring is arranged inside the middle ring groove; it also includes: an embedded oil port, which is arranged on both sides of the outer wall of the upper surface of the piston body, and an oil storage cavity is arranged at the lower end of the embedded oil port, and an oil channel for connecting the middle ring groove is arranged at the lower end of the oil storage cavity, and a drip nozzle is arranged at the position of the oil channel near the middle ring groove; a piston connecting hole is arranged at the middle position of the outer wall of the upper surface of the piston body, and a piston rod is arranged at one end of the piston connecting hole, and a piston rod bushing is arranged on the outer wall of the piston rod. The oil seals and sealing rings used for wear in this application still need to face wear directly and cannot be restored after being worn. Although the piston body is equipped with an oil storage chamber, oil channel and oil nozzle to delay wear and can continuously provide lubrication, the oil seal and sealing ring will still be damaged after the side contacting the inner wall of the cylinder is worn, resulting in loss of sealing effect. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a wear-resistant piston sealing ring, which can effectively prolong the maintenance time of the cylinder piston sealing effect and effectively improve the normal working time of the hydraulic cylinder.

[0005] In order to achieve the above-mentioned purpose, the utility model, the wear-resistant piston sealing ring, includes a telescopic rod assembly, a telescopic rod end assembly, a ring head, a sleeve, a fixing pin, a main telescopic rod, a piston head one, a deformable piston sealing ring, a mounting hole, a sealing ring body, an anti-wear part, a piston head two, a pin hole of the telescopic rod end assembly, a hexagonal head of a piston head two control screw, a piston head two control screw and an oil cylinder, the oil cylinder sleeves the telescopic rod assembly, the telescopic rod assembly also includes a telescopic rod end assembly, a main telescopic rod, a piston head one and a piston head two, and a telescopic rod end assembly is provided on the upper part of the main telescopic rod The pin hole of the telescopic rod assembly is connected to the sleeve of the telescopic rod end assembly by threading the main telescopic rod and the fixing pin is inserted into the pin hole of the telescopic rod end assembly, and the mounting ring head is welded on the upper part of the sleeve; the lower end of the main telescopic rod is fixedly connected to the piston head one, the lower end of the piston head two control screw is fixedly connected to the piston head two, the top end of the piston head two control screw is fixedly connected to the hexagonal head of the piston head two control screw, the piston head two control screw is screwed into the through screw hole axially opened on the main telescopic rod, and a deformable piston sealing ring is fixedly installed between the piston head one and the piston head two; the piston head one and the piston head two are both equipped with grooves for installing sealing rings.

[0006] In addition, the wear-resistant piston sealing ring proposed in the above embodiment of the utility model may also have the following additional technical features:

[0007] As a further improvement of the present invention, the deformable piston sealing ring includes a mounting hole, a sealing ring body and an anti-wear portion. The mounting hole is opened at the center of the sealing ring body, the mounting hole is sleeved with two control screws of the piston head, and an anti-wear portion is provided on the outside of the sealing ring body.

[0008] As a further improvement of the utility model, both ends of the fixing pin are provided with threads and are screwed with nuts.

[0009] As a further improvement of the present invention, the piston head 1 and the piston head 2 are both equipped with two grooves for installing sealing rings.

[0010] As a further improvement of the utility model, a mesh fiber skeleton is provided inside the deformable piston sealing ring.

[0011] As a further improvement of the present invention, the ring head may also be a top plate.

[0012] Through the above scheme, the utility model has at least the following advantages: compared with the conventional hydraulic cylinder, by replacing the single piston in the original hydraulic cylinder with piston head one and piston head two, and then using piston head one and piston head two to clamp a deformable piston sealing ring, after the traditional sealing ring of the piston head is worn, the piston head can be controlled by rotating the piston head two to allow the piston head one and piston head two to squeeze the deformable piston sealing ring, so that the side wall of the piston expands and fits tightly against the inner wall of the cylinder, thereby continuing to ensure the piston sealing effect, which can effectively extend the maintenance time of the cylinder piston sealing effect and effectively improve the normal working time of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of a wear-resistant piston seal ring;

[0014] Figure 2 It is a stereoscopic diagram of the telescopic rod assembly of the wear-resistant piston seal ring;

[0015] Figure 3 It is a stereoscopic diagram of a telescopic rod assembly of a wear-resistant piston seal ring and a deformable piston seal ring being removed;

[0016] Figure 4 It is a cross-sectional view of the telescopic rod assembly of the wear-resistant piston seal ring;

[0017] Figure 5 It is a stereoscopic diagram of the telescopic rod end assembly of the wear-resistant piston seal ring;

[0018] Figure 6 is a cross-sectional view of a deformable piston seal ring of a wear-resistant piston seal ring;

[0019] In the figure: 1. telescopic rod assembly, 1-1. telescopic rod end assembly, 1-11. ring head, 1-12. sleeve, 1-13. fixing pin, 1-2. main telescopic rod, 1-3. piston head one, 1-4. deformable piston sealing ring, 1-41. mounting hole, 1-42. sealing ring body, 1-43. anti-wear part, 1-5. piston head two, 1-6. pin hole of telescopic rod end assembly, 1-7. hexagonal head of piston head two control screw, 1-8. piston head two control screw, 2. oil cylinder. DETAILED DESCRIPTION

[0020] The wear-resistant piston sealing ring of the present utility model is described below in conjunction with the accompanying drawings.

[0021] In the first embodiment of the present application, Figures 1 to 5As shown, the wear-resistant piston seal (hereinafter referred to as "this patent") comprises a telescopic rod assembly 1, a telescopic rod end assembly 1-1, a main telescopic rod 1-2, a piston head 1-3, a deformable piston seal 1-4, a piston head 2 1-5, a telescopic rod end assembly pin hole 1-6, a piston head 2 control screw hexagonal head 1-7, a piston head 2 control screw 1-8 and a cylinder 2, the cylinder 2 is sleeved with the telescopic rod assembly 1, the telescopic rod assembly 1 also comprises a telescopic rod end assembly 1-1, a main telescopic rod 1-2, a piston head 1-3 and a piston head 2 1-5, a telescopic rod end assembly pin hole 1-6 is provided on the upper part of the main telescopic rod 1-2, a sleeve 1- 12 is screwed to the main telescopic rod 1-2 and the fixing pin 1-13 is inserted into the pin hole 1-6 of the telescopic rod end assembly, and the mounting ring head 1-11 is welded on the upper part of the sleeve 1-12; the lower end of the main telescopic rod 1-2 is fixedly connected to the piston head one 1-3, the lower end of the piston head two control screw 1-8 is fixedly connected to the piston head two 1-5, the top of the piston head two control screw 1-8 is fixedly connected to the hexagonal head 1-7 of the piston head two control screw, and the piston head two control screw 1-8 is screwed into the through screw hole axially opened in the main telescopic rod 1-2, and a deformable piston sealing ring 1-4 is fixedly installed between the piston head one 1-3 and the piston head two 1-5; the piston head one 1-3 and the piston head two 1-5 are both equipped with grooves for installing sealing rings.

[0022] The utility model number is CN218862985U, which is an anti-wear piston for a loader (hereinafter referred to as "the patent"). In the patent, the oil seal and sealing ring used for wear still need to face the wear directly and cannot be restored after being worn. Although the piston body is equipped with an oil storage chamber, oil channel and oil nozzle for delaying wear to continuously provide lubrication, after the side of the oil seal and the sealing ring contacting the inner wall of the oil cylinder is worn, it will still be damaged and lose the sealing effect. The patent ensures that the sealing performance is still maintained after long-term wear by adding a deformable piston sealing ring 1-4 that can be deformed under the extrusion of the piston head 1-3 and the piston head 2 (1-5). After the edge of the deformable piston sealing ring 1-4 is worn, the deformable piston sealing ring 1-4 can be squeezed again by the piston head 1-3 and the piston head 2 (1-5) to make the edge of the deformable piston sealing ring 1-4 close to the inner wall of the oil cylinder, thereby ensuring continuous sealing.

[0023] The structure of the second embodiment is basically the same as that of the first embodiment, except that Figure 6As shown, the deformable piston seal ring 1-4 includes a mounting hole 1-41, a seal ring body 1-42 and an anti-wear portion 1-43. The mounting hole 1-41 is provided at the center of the seal ring body 1-42. The mounting hole 1-41 is sleeved with the second control screw 1-8 of the piston head. The anti-wear portion 1-43 is provided on the outer side of the seal ring body 1-42. Different materials are used to ensure that the anti-wear portion 1-43 of the deformable piston seal ring 1-4 can protrude outward after being squeezed, and the anti-wear performance of the deformable piston seal ring 1-4 is also ensured.

[0024] In order to further optimize the working efficiency of the present application and make the telescopic rod end assembly 1-1 more firmly fixed, both ends of the fixing pin 1-13 are provided with threads and screwed with nuts. After being fixed by the fixing pin 1-13, the telescopic rod end assembly 1-1 can cope with various working conditions of engineering machinery and is easy to disassemble when necessary. In order to further improve the sealing performance, the piston head 1-3 and the piston head 2 1-5 are both equipped with two grooves for installing sealing rings. In order to keep the sealing ring body 1-42 stable when the deformable piston sealing ring 1-4 is squeezed, a mesh fiber skeleton is provided inside the deformable piston sealing ring 1-4. In order to adapt to a variety of working environments, the ring head 1-11 can also be a top plate.

[0025] When in use, install the wear-resistant piston seal ring and the equipment can be put into use.

[0026] When the utility model is in use, the specific operations are as follows:

[0027] Normally, the hydraulic cylinder is used normally. When the hydraulic cylinder is found to be underpowered, the fixing pin 1-13 of the telescopic rod end assembly 1-1 can be disassembled, and the telescopic rod end assembly 1-1 can be removed from the main telescopic rod 1-2. Then, a sleeve or a sleeve is used to cover the piston head 2 control screw hexagonal head 1-7 in the through hole at the upper end of the main telescopic rod 1-2, and the piston head 2 control screw 1-8 is rotated to make the piston head 2 1-5 rotate with it and squeeze the deformable piston sealing ring 1-4, the piston head 1 1-3 and the piston head 2 1-5. -5 The deformable piston sealing ring 1-4 that is deformed under the extrusion begins to deform, and the anti-wear portion 1-43 on its outer side begins to bulge outward, and then fits tightly against the inner wall of the oil cylinder to achieve sealing. After the anti-wear portion 1-43 on the edge of the deformable piston sealing ring 1-4 is partially worn away, resulting in sealing failure, the deformable piston sealing ring 1-4 can be squeezed again by the piston head 1-3 and the piston head 2 1-5 to make the edge of the deformable piston sealing ring 1-4 fit tightly against the inner wall of the oil cylinder, thereby ensuring continuous sealing.

[0028] In summary, the wear-resistant piston sealing ring of the embodiment of the utility model is achieved by replacing the single piston in the original hydraulic cylinder with piston head 1-3 and piston head 2 1-5, and then using piston head 1-3 and piston head 2 1-5 to clamp a deformable piston sealing ring 1-4. After the traditional sealing ring is worn out, the piston head can be controlled by rotating the piston head 2 to control the screw 1-8 so that the piston head 1-3 and the piston head 2 1-5 can squeeze the deformable piston sealing ring 1-4, so that the side wall of the piston expands and fits tightly against the inner wall of the cylinder, thereby continuing to ensure the piston sealing effect, effectively extending the maintenance time of the cylinder piston sealing effect, and effectively improving the normal working time of the hydraulic cylinder.

[0029] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A wear-resistant piston seal ring, comprising a telescopic rod assembly (1) and a cylinder (2), wherein the cylinder (2) is sleeved with the telescopic rod assembly (1), and characterized in that: The telescopic rod assembly (1) further comprises a telescopic rod end assembly (1-1), a main telescopic rod (1-2), a piston head one (1-3) and a piston head two (1-5); a telescopic rod end assembly pin hole (1-6) is provided on the upper portion of the main telescopic rod (1-2); a sleeve (1-12) of the telescopic rod end assembly (1-1) is screwed to the main telescopic rod (1-2) and a fixing pin (1-13) is inserted into the telescopic rod end assembly pin hole (1-6); a mounting ring head (1-11) is welded to the upper portion of the sleeve (1-12); and a fixing pin (1-13) is inserted into the fixing pin hole (1-6) of the main telescopic rod (1-2). The piston head 1 (1-3) is connected, the lower end of the piston head 2 control screw (1-8) is fixedly connected to the piston head 2 (1-5), the top end of the piston head 2 control screw (1-8) is fixedly connected to the piston head 2 control screw hexagonal head (1-7), the piston head 2 control screw (1-8) is screwed into the through screw hole axially opened on the main telescopic rod (1-2), and a deformable piston sealing ring (1-4) is fixedly installed between the piston head 1 (1-3) and the piston head 2 (1-5); the piston head 1 (1-3) and the piston head 2 (1-5) are both equipped with grooves for installing sealing rings.

2. The wear-resistant piston seal ring according to claim 1, characterized in that: The deformable piston sealing ring (1-4) comprises a mounting hole (1-41), a sealing ring body (1-42) and an anti-wear portion (1-43); the mounting hole (1-41) is provided at the center of the sealing ring body (1-42); the mounting hole (1-41) is sleeved with two control screws (1-8) of the piston head; and the anti-wear portion (1-43) is provided on the outer side of the sealing ring body (1-42).

3. The wear-resistant piston seal ring according to claim 2, characterized in that: Both ends of the fixing pin (1-13) are provided with threads and are screwed with nuts.

4. The wear-resistant piston seal ring according to claim 1, characterized in that: The piston head one (1-3) and the piston head two (1-5) are both equipped with two grooves for installing sealing rings.

5. The wear-resistant piston seal ring according to claim 1 or 4, characterized in that: A mesh fiber skeleton is provided inside the deformable piston sealing ring (1-4).

6. The wear-resistant piston seal ring according to claim 1, characterized in that: The ring head (1-11) may also be a top plate.

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