Oil cylinder piston with deviation prevention effect
By adopting a combined structure of supporting anti-bias grooves, elastic rings and wear-resistant support anti-bias rings in the cylinder piston, the problem of wear of the seal ring caused by the bias of the cylinder piston toward the inclination is solved, and a higher sealing effect and a longer service life are achieved.
Patent Information
- Application Number
- CN202421195610.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The cylinder pistons in existing hydraulic stations are prone to be biased and tilted during movement, resulting in wear of the sealing ring and insufficient sealing, which affects the accurate output of the hydraulic pressure.
A cylinder piston with anti-bias effect is designed, and a combined structure of supporting anti-bias grooves, elastic rings and wear-resistant support anti-bias rings are adopted. The elastic support of the elastic ring allows the support anti-bias ring to adapt to the inner wall of the cylinder cylinder to prevent deflection and wear of the oil plug body.
Effectively prevent deflection wear of the cylinder piston, improve sealing effect, ensure accurate hydraulic output, extend service life, and alleviate transition wear between the support anti-bias ring and the inner wall of the cylinder cylinder.
Smart Images
Figure CN222668538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hydraulic station, in particular to an oil cylinder piston with an anti-deviation effect. Background Art
[0002] A hydraulic station is a hydraulic device that supplies oil according to the required flow direction, pressure and flow rate, and is usually used in conjunction with machine tools that require hydraulically driven actuators.
[0003] Chinese utility model patent specification CN219081986 discloses an energy-saving hydraulic station, such as Figure 1 As shown, it includes: an oil tank 1', a gas-liquid booster pump and an electromagnetic valve group 6'; the liquid outlet of the oil tank 1' is connected to the liquid inlet of the gas-liquid booster pump; the liquid outlet of the gas-liquid booster pump is connected to the liquid inlet of the electromagnetic valve group 6'; the liquid return port of the electromagnetic valve group 6' is connected to the liquid inlet of the oil tank 1'; the gas-liquid booster pump includes: a pneumatic cylinder 10' and an oil cylinder 11'; the pneumatic cylinder 10' and the oil cylinder 11' are connected; a pneumatic piston in contact with the inner wall is provided in the pneumatic cylinder 10', and an oil cylinder piston in contact with the inner wall is provided in the oil cylinder 11'; the piston area of the pneumatic piston is larger than the piston area of the oil cylinder piston; it also includes an air supply device, including: an air source, a first air control valve 27', a second air control valve 28' and an air control reversing valve 29'; the first A pneumatic control valve 27' is arranged on one side of the pneumatic cylinder 10, and the second pneumatic control valve 28 is arranged on the other side of the pneumatic cylinder 10'; the air source is connected to the air inlets of the first pneumatic control valve 27', the second pneumatic control valve 28' and the pneumatic control reversing valve 29' respectively; the pneumatic control reversing valve 28' comprises: an A' outlet and a B' outlet; the A' outlet is connected to one side of the pneumatic cylinder 10', and the B' outlet is connected to the other side of the pneumatic cylinder 10'; the first pneumatic control valve 27' is connected to the pneumatic control reversing valve 29' through the first air source circuit 30' to control the pneumatic control reversing valve 29' to start the A' outlet; the second pneumatic control valve 28' is connected to the pneumatic control reversing valve 29' through the second air source circuit 31' to control the pneumatic control reversing valve 29' to start the B' outlet.
[0004] In the factory use environment of the above energy-saving hydraulic station, the cylinder piston is generally used to cooperate with the cylinder barrel of the cylinder, and the cylinder barrel is filled with oil. The pneumatic piston and the cylinder piston are connected by a piston rod, and the pneumatic piston drives the cylinder piston to reciprocate. Since the cylinder piston needs to be installed in the cylinder barrel to seal the oil, the sealing performance between the cylinder piston and the cylinder barrel is very high. However, in the above energy-saving hydraulic station, the cylinder piston is prone to tilting or deflection during movement, which causes the sealing ring on the cylinder piston to wear, that is, eccentric wear occurs, resulting in insufficient sealing of the cylinder piston, resulting in the inability of the cylinder to accurately output hydraulic pressure, the tooling loses pressure, resulting in the workpiece not being clamped tightly, and the tool hitting and other problems. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an oil cylinder piston with an anti-deviation effect.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0007] On the one hand, the utility model proposes an oil cylinder piston, which includes: an oil plug body; wherein a support anti-deflection groove is provided in the middle position of the oil plug body, an elastic ring is provided in the support anti-deflection groove, and a support anti-deflection ring is provided on the outer peripheral sleeve of the elastic ring, and the support anti-deflection ring is used to abut against the inner wall of the cylinder barrel to seal and provide balanced support for the sliding of the oil plug body, thereby preventing the oil plug body from being skewed and worn.
[0008] Furthermore, for the above-mentioned oil cylinder piston, the supporting anti-deflection ring is a wear-resistant ring.
[0009] Furthermore, in the above-mentioned oil cylinder piston, the supporting anti-deflection ring is a ring-shaped structure made of PU material.
[0010] Furthermore, in the above-mentioned oil cylinder piston, the cross-section of the supporting anti-deflection ring is a square structure.
[0011] Furthermore, in the above-mentioned oil cylinder piston, the support anti-deviation groove is a U-shaped structure and is arranged along the entire circumference of the oil plug body, so that the support anti-deviation ring and the elastic ring can be clamped in the support anti-deviation groove.
[0012] Furthermore, in the above-mentioned oil cylinder piston, both ends of the oil plug body are provided with sealing installation grooves, each of the sealing installation grooves is provided with a sealing ring, and the V-shaped openings of the two sealing rings in the two sealing installation grooves are arranged back to back for oil sealing.
[0013] Furthermore, the above-mentioned cylinder piston also includes: two oil plug end covers; wherein the sealing mounting groove is a notch structure with openings on both sides and is arranged along the entire circumference of the oil plug body, so that the side wall of the sealing mounting groove serves as a limiting step surface; the two oil plug end covers are respectively arranged at both ends of the oil plug body, for clamping the sealing ring, so that the sealing ring is limitedly clamped between the limiting step surface of the sealing mounting groove and the oil plug end cover.
[0014] Further, in the above-mentioned oil cylinder piston, the sealing mounting groove is a U-shaped structure and is arranged along the entire circumference of the oil plug body, so that the sealing ring can be clamped in the sealing mounting groove; or, the sealing mounting groove is a notch structure with openings on both sides and is arranged along the entire circumference of the oil plug body, so that the side wall of the sealing mounting groove serves as a limiting step surface.
[0015] Furthermore, in the above-mentioned oil cylinder piston, a mounting hole is provided on the oil plug body for mounting the piston rod.
[0016] On the other hand, the utility model proposes an energy-saving hydraulic station, which includes: a gas-liquid booster pump and a control valve group for controlling the reversing of the gas-liquid booster pump; the gas-liquid booster pump includes a linked pneumatic cylinder and an oil cylinder; the oil cylinder barrel of the oil cylinder is provided with the above-mentioned cylinder piston with anti-bias effect.
[0017] The utility model provides an oil cylinder piston with anti-deviation effect and an energy-saving hydraulic station with the oil cylinder piston. The elastic ring in the support anti-deviation groove of the oil plug body elastically supports the support anti-deviation ring, so that the support anti-deviation ring can adapt to the inner wall of the oil cylinder barrel and the sliding support abuts against the inner wall surface of the oil cylinder barrel, which not only seals the oil plug body, but also provides balanced support for the sliding of the oil plug body, prevents the skew wear of the oil plug body, prevents the skew wear of the sealing ring on the oil plug body, and improves the oil sealing effect of the oil plug body. At the same time, the provision of the elastic ring can play a buffering role, alleviate the transition wear between the support anti-deviation ring and the inner wall of the oil cylinder barrel, so as to extend the service life, and solves the problem of insufficient sealing of the oil cylinder piston due to eccentric wear of the sealing ring on the oil cylinder piston. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0019] Figure 1 It is a structural schematic diagram of an energy-saving hydraulic station in the prior art;
[0020] Figure 2 A schematic diagram of the structure between the oil cylinder and the pneumatic cylinder in the energy-saving hydraulic station provided by the first embodiment of the utility model;
[0021] Figure 3 A schematic diagram of the structure of the oil cylinder piston provided in the first embodiment of the utility model;
[0022] Figure 4 A schematic diagram of the structure of the oil cylinder piston provided in the second embodiment of the utility model;
[0023] Figure 5 Another structural schematic diagram of the oil cylinder piston provided in the second embodiment of the utility model;
[0024] Figure 6 Another structural schematic diagram of the oil cylinder piston provided in the second embodiment of the utility model;
[0025] Figure 7 A schematic diagram of the structure of the oil cylinder piston provided in the third embodiment of the utility model;
[0026] Figure 8 A schematic diagram of the structure of the oil cylinder piston provided in the fourth embodiment of the utility model;
[0027] Description of reference numerals:
[0028] 1'-oil tank, 5'-filter, 6'-solenoid valve group, 7'-solenoid valve seat, 8'-output inlet and return oil pipes, 9'-muffler, 10'-pneumatic cylinder, 11'-oil cylinder, 26'-air source, 27'-first air control valve, 28'-second air control valve, 29'-air control reversing valve, 30'-first air source circuit, 31'-second air source circuit, 33'-return oil pipeline;
[0029] 1-oil cylinder, 11-oil cylinder piston, 111-piston body, 1111-support anti-deviation groove, 1112-seal mounting groove, 112-elastic ring, 113-support anti-deviation ring, 114-mounting hole, 115-sealing ring, 1151-V-shaped opening, 1152-support part, 116-oil plug end cover, 2-pneumatic cylinder, 21-cylinder piston, 22-cylinder body, 3-piston rod, 4-guide support ring, 5-sealing ring. DETAILED DESCRIPTION
[0030] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0031] First embodiment:
[0032] See also Figure 2 , which is a schematic diagram of the structure of the energy-saving hydraulic station provided by the first embodiment of the utility model. As shown in the figure, the gas-liquid booster pump of the energy-saving hydraulic station includes a linked oil cylinder 1 and a pneumatic cylinder 2. The pneumatic cylinder 2 is provided with a cylinder piston 21 in contact with the inner wall, and the oil cylinder 1 is provided with an oil cylinder piston 11 in contact with the inner wall. The cylinder piston 21 and the oil cylinder piston 11 are connected by a piston rod 3 to achieve linkage between the two.
[0033] Specifically, a cylinder through hole is provided on the end of the oil cylinder 1 adjacent to the air cylinder 2, and a piston rod mounting hole 221 arranged along its axial direction is provided on the end of the cylinder body 22 of the pneumatic cylinder 2 close to the oil cylinder 1. The oil cylinder through hole is coaxially arranged and connected with the piston rod mounting hole 221, and the oil cylinder 1 and the air cylinder 2 are connected through the oil cylinder through hole and the piston rod mounting hole 221; the piston rod 3 passes through the oil cylinder through hole and the piston rod mounting hole 221 in a sealed sliding connection, and the two ends of the piston rod 3 are respectively fixedly connected to the oil cylinder piston 11 and the air cylinder piston 21. In this embodiment, the two ends of the piston rod 3 are respectively penetrated through the oil cylinder piston 11 and the air cylinder piston 21, and are connected and fixed to the oil cylinder piston 11 and the air cylinder piston 21 through connecting parts such as nuts. In this embodiment, the gas-liquid booster pump is a single oil cylinder, and can also be a double oil cylinder, which is not limited in this embodiment. In this embodiment, the piston area of the air cylinder piston 21 is larger than the piston area of the oil cylinder piston 11, and in particular, the piston area of the air cylinder piston 21 can be multiple times larger than the piston area of the oil cylinder piston 11, so as to facilitate the calculation of the pressure. For example, if the piston area of the air cylinder piston 21 is 6 times the piston area of the oil cylinder piston 11, the air cylinder 2 outputs a pressure of 1 bar, and the oil cylinder 1 outputs a pressure of 6 bar. Among them, the piston rod mounting hole 221 is a through hole structure arranged along the axial direction of the air cylinder 2.
[0034] See also Figure 3 , a schematic diagram of the structure of the oil cylinder piston provided by the first embodiment of the utility model. As shown in the figure, the oil cylinder piston 11 comprises: an oil plug body 111; wherein, a support anti-deviation groove 1111 is provided in the middle position of the oil plug body 111, an elastic ring 112 is provided in the support anti-deviation groove 1111, and a support anti-deviation ring 113 is sleeved on the outer periphery of the elastic ring 112, and the support anti-deviation ring 113 is used to abut against the inner wall of the oil cylinder barrel to seal and provide balanced support for the sliding of the oil plug body 111, prevent the oil plug body 111 from being skewed and worn, and also prevent the sealing ring on the oil plug body 111 from being skewed and worn, thereby improving the oil sealing effect of the oil plug body 111.
[0035] Specifically, the middle position of the oil plug body 111 is along the axial direction (such as Figure 3The middle position in the horizontal direction shown in the figure is provided with a support anti-deflection groove 1111, which can be a U-shaped groove structure and is arranged along the circumference of the oil plug body 111 to form an annular groove structure. The inside of the support anti-deflection groove 1111 is provided with an elastic ring 112 and a support anti-deflection ring 113 in sequence from the axial direction to the outside along the radial direction of the oil plug body 111, that is, the elastic ring 112 and the support anti-deflection ring 113 are stacked in sequence, and the elastic ring 112 and the support anti-deflection ring 113 are clamped in the support anti-deflection groove 1111 to achieve the limit clamping of the elastic ring 112 and the support anti-deflection ring 113. Among them, the setting of the elastic ring 112 can increase the elasticity of the inner circumference of the support anti-deflection ring 113, so that the support anti-deflection ring 113 can elastically adapt to the inner wall surface of the cylinder barrel, so as to slide and support against the inner wall surface of the cylinder barrel, which not only seals the oil plug body 111, but also provides balanced support for the sliding of the oil plug body 111, prevents the skew wear of the oil plug body 111, and prevents the skew wear of the sealing ring on the oil plug body 111, thereby improving the oil sealing effect of the oil plug body 111. At the same time, the setting of the elastic ring 112 can play a buffering role, alleviate the transition wear between the support anti-deflection ring 113 and the inner wall of the cylinder barrel, so as to extend the service life.
[0036] In this embodiment, the elastic ring 112 can be a rubber ring with a circular cross section. Of course, the cross section can also be other structures, such as a square structure, and the material can also be other elastic materials; the support anti-deflection ring 113 can be a wear-resistant ring to extend its service life. Among them, the support anti-deflection ring 113 can be a ring-shaped structure made of PU material, which is sleeved on the outer periphery of the support anti-deflection ring 113, and the whole can be a circular structure. In addition, in order to improve the stability of the support anti-deflection ring 113, preferably, the inner diameter of the support anti-deflection ring 113 is smaller than the outer diameter of the elastic ring 112, so that the two can be adapted to cooperate, especially the elastic ring 112 can apply elastic force to the support anti-deflection ring 113, so that the support anti-deflection ring 113 is adapted to the inner wall of the cylinder barrel for sliding balance support; the outer diameter of the support anti-deflection ring 113 can be larger than the outer diameter of the oil plug body 111, so that it can be elastically compressed during installation and slide balanced support with the inner wall of the cylinder barrel. Among them, the cross section of the support anti-deflection ring 113 can be a square structure, or other shapes, and there is no limitation on it in this embodiment. The support anti-deflection ring 113 can also be made of other materials, such as polytetrafluoroethylene material or copper with a certain hardness. Among them, the polytetrafluoroethylene material has a certain hardness, is self-lubricating and has good wear resistance, which can further extend the service life of the support anti-deflection ring 113; of course, it can also be other wear-resistant materials, and this embodiment does not impose any limitation on it.
[0037] In this embodiment, an anti-eccentric wear layer (not shown in the figure) may be provided on the outer wall of the oil plug body 111 and / or the outer wall of the supporting anti-eccentric wear ring 113. The anti-eccentric wear layer may be a polytetrafluoroethylene coating. When the anti-eccentric wear layer is coated on the oil plug body 111, the outer wall of the oil plug body 111 is corroded and polished, and after polishing, the anti-eccentric wear layer is coated by a spraying and sintering method.
[0038] Continue to see Figure 3 The oil plug body 111 is provided with a mounting hole 114, which is a through hole structure coaxially arranged with the oil plug body 111 and is used to install the piston rod 3, so that the piston rod 3 can pass through the oil plug body 111 and be fixedly installed on the oil plug body 111, thereby realizing the linkage between the two, especially realizing the linkage between the oil cylinder piston 11 and the cylinder piston 21.
[0039] In this embodiment, the piston rod 3 cannot be centered and will experience unilateral wear. That is to say, the oil seals of the oil cylinder and the pneumatic cylinder are made of soft materials and will tend to be biased toward the force-bearing end, that is, they are easily displaced when subjected to force, causing severe wear on the piston rod and the oil cylinder, namely, eccentric wear, which will lead to oil leakage in the energy-saving hydraulic station, and the oil will flow into the cylinder.
[0040] Continue to see Figure 2 In order to solve the problem of oil leakage in the cylinder, a guide support ring 4 is further provided on the cylinder body 22 at the periphery of the piston rod mounting hole, which is used to guide and support the piston rod 3 to prevent the piston rod 3 from being skewed or worn.
[0041] Specifically, the cylinder body 22 is provided with a piston rod mounting hole on the outer periphery of the cylinder body 22 on the side close to the outside of the cylinder body 22 (such as Figure 2 The left side shown in FIG. 1 is also provided with a guide support groove, which is arranged on a side close to the outside of the pneumatic cylinder 2 (such as Figure 2 As shown on the left side, the guide support ring 4 is clamped in the guide support groove, the outer wall of which abuts against the cylinder body 22, and the inner wall is used to abut against the outer wall of the piston rod 3, so as to support and guide the sliding of the piston rod 3, thereby avoiding the tilting of the piston rod 3, and thereby avoiding the tilting of the cylinder piston 21 and the oil cylinder piston 11 on the piston rod 3, thereby avoiding the eccentric wear and tilting of the piston rod 3, the cylinder piston 21 and the oil cylinder piston 11. Among them, the guide support groove can be a U-shaped structure and is arranged along the circumference of the piston rod mounting hole, and is also connected to the piston rod mounting hole, so as to guide and support the piston rod 3 placed in the piston rod mounting hole.
[0042] In this embodiment, the guide support ring 4 is an annular structure, which is arranged in the guide support groove, and the inner wall can abut against the outer wall of the piston rod 3, and can support and guide the sliding of the piston rod 3, and ensure the stability of the sliding of the piston rod 3 to avoid tilting, etc. Among them, the guide support ring 4 is made of polytetrafluoroethylene material, which has a certain hardness, good self-lubrication and wear resistance; of course, it can also be other wear-resistant materials, such as copper and other materials, which are not limited in this embodiment.
[0043] Continue to see Figure 2 The cylinder body 22 may also be provided with a sealing ring 5 on the outer periphery of the piston rod mounting hole on the side close to the inside of the pneumatic cylinder for sealing. Specifically, the cylinder body 22 may be provided with a sealing ring 5 on the outer periphery of the piston rod mounting hole on the side close to the inside of the cylinder body 22 (such as Figure 2 The left side shown in the figure is also provided with an installation sealing groove, which is arranged on the right side of the guide support groove. The sealing ring 5 is arranged in the installation sealing groove to seal the pneumatic cylinder 2.
[0044] Second embodiment:
[0045] The difference between the gas-liquid booster pump and the oil cylinder piston provided in the second embodiment and the gas-liquid booster pump and the oil cylinder piston provided in the first embodiment lies in that the structure of the oil cylinder piston, especially the structures at both ends of the oil plug body, is different, and the positional relationship and connection relationship between other components are the same as those in the first embodiment.
[0046] See also Figures 4 to 6 , which shows the preferred structure of the oil cylinder piston provided in the second embodiment of the utility model. As shown in the figure, based on the oil plug body of the first embodiment, further preferably, the two ends of the oil plug body 111 (such as Figure 4 The left and right ends (as shown) are provided with sealing installation grooves 1112, each sealing installation groove 1112 is provided with a sealing ring 115, and the V-shaped openings 1151 of the two sealing rings 115 in the two sealing installation grooves 1114 are arranged opposite to each other (as shown in FIG. Figure 4 As shown, the V-shaped opening 1151 of the left sealing ring 115 is arranged to open to the left, and the V-shaped opening 1151 of the right sealing ring 115 is arranged to open to the right), which is used for oil sealing.
[0047] Specifically, both left and right ends of the oil plug body 111 can be provided with sealing installation grooves 1112, which are notch structures with openings on both sides and are arranged along the entire circumference of the oil plug body 111, so that the oil plug body 111 forms a three-section structure, that is, the outer diameters of the two side sections are smaller than the outer diameter of the middle section, forming a two-side mounting clamping step structure, that is, the side walls of the sealing installation groove serve as the limiting step surface of the sealing ring 115. The two sealing rings 115 can be installed in the two sealing installation grooves 1112 from both ends respectively.
[0048] In one implementation of this embodiment, Figure 4 As shown, the two sealing rings 115 are both V-shaped sealing rings, and the V-shaped openings of the two V-shaped sealing rings are arranged opposite to each other for oil sealing. Specifically, the two V-shaped sealing rings are installed in reverse, that is, the V-shaped openings 1151 of the two V-shaped sealing rings are arranged opposite to each other, that is, the V-shaped opening 1151 of the left sealing ring 115 is arranged to open to the left, and the V-shaped opening 1151 of the right sealing ring 115 is arranged to open to the right, so as to seal the hydraulic oil on both sides of the oil plug body 111 respectively. In this embodiment, the outer diameter of the sealing ring 115 in a free state is greater than the outer diameter of the oil plug body 111.
[0049] In this embodiment, the two ends of the V-shaped opening 1151 of the sealing ring 115 (such as Figure 4 The upper and lower ends shown in FIG. 110 are arranged along the thickness direction of the sealing ring 115 (such as Figure 4 A support portion 1152 is provided outside the V-shaped opening 1151 (in the vertical direction shown in FIG. 1 ) to abut against the piston end cover 112 and the inner wall of the cylinder barrel. Specifically, the support portion 1152 and the sealing ring 115 are an integral structure, and the end wall of the support portion 1152 (such as Figure 4 The upper and lower end walls shown in the figure can abut against the inner wall of the cylinder barrel to limit and support the oil seal, thereby improving the effect of the oil seal.
[0050] In another implementation of this embodiment, Figure 5 As shown, the two sealing rings 115 are both O-rings.
[0051] In yet another implementation of this embodiment, Figure 6 As shown, one of the sealing rings 115 is an O-ring, and the other sealing ring 115 is a V-ring, and the V-shaped opening of the V-ring is arranged to face away from the O-ring.
[0052] In this embodiment, the sealing ring 115 can be limited by a limiting structure, for example, the sealing ring 115 and the oil plug body 111 can be limited and fixed by limiting protrusions and limiting grooves, that is, the oil plug body 111 is provided with limiting protrusions arranged along the entire circumference of the sealing installation groove 1112 on the bottom wall, and the sealing ring 115 is provided with limiting grooves matched with the limiting protrusions, which can be limited and fixed. Of course, other methods can also be used for limiting and fixing, such as elastic compression of the sealing ring 115 to make an interference fit between the sealing ring 115 and the oil plug body 111. In this embodiment, there is no limitation on the fixing method of the sealing ring 115.
[0053] Third embodiment:
[0054] The difference between the gas-liquid booster pump and the cylinder piston provided in the third embodiment and the gas-liquid booster pump and the cylinder piston provided in the second embodiment lies in the structure of the cylinder piston, especially the structure of the sealing mounting groove 1112, i.e. the limiting clamping of the sealing ring 115, and the positional relationship and connection relationship between other components are the same as those in the second embodiment.
[0055] See also Figure 7 , a schematic diagram of the structure of the oil cylinder piston provided by the third embodiment of the utility model. As shown in the figure, the sealing installation groove 1112 can be a U-shaped groove structure and is arranged along the entire circumference of the oil plug body 111 to form an annular groove structure so that the sealing ring 115 can be clamped in the sealing installation groove 1112. The two sealing rings 115 can be installed in the two sealing installation grooves 1112 respectively, and the two sealing rings 115 are installed in reverse, that is, the V-shaped openings 1151 of the two sealing rings 115 are arranged back to back, that is, the V-shaped opening 1151 of the left sealing ring 115 is arranged to open to the left, and the V-shaped opening 1151 of the right sealing ring 115 is arranged to open to the right, so as to seal the hydraulic oil on both sides of the oil plug body 111 respectively. In this embodiment, the outer diameter of the sealing ring 115 in the free state is larger than the outer diameter of the oil plug body 111. Among them, the side wall of the support portion 1152 (such as Figure 7 The left side wall as shown in the figure can abut against the side wall of the sealing installation groove 1112, which can increase the contact area between the sealing ring 115 and the oil plug body 111.
[0056] Fourth embodiment:
[0057] The difference between the gas-liquid booster pump and the oil cylinder piston provided in the fourth embodiment and the gas-liquid booster pump and the oil cylinder piston provided in the second embodiment lies in: the structure of the oil cylinder piston, especially: the clamping method of the sealing rings at both ends of the oil plug body is different, and the positional relationship and connection relationship between other components are the same as those in the second embodiment.
[0058] See also Figure 8 , which is a schematic diagram of the structure of the oil cylinder piston provided by the third embodiment of the utility model. As shown in the figure, the two ends of the oil plug body 111 (such as Figure 8 The two oil plug end covers 116 are respectively arranged at the two ends of the oil plug body 111 (as shown in the left and right ends). Figure 8 The left and right ends shown in the figure are used to clamp the sealing ring 115 so that the sealing ring 115 is limited and clamped between the side wall of the sealing installation groove 1112, that is, the limiting step surface of the sealing ring 115 and the oil plug end cover 116, which can facilitate the disassembly and assembly of the sealing ring 115. At the same time, the V-shaped opening 1151 of the sealing ring 115 faces the cavity on one side of the end, so as to perform oil sealing on the cavity on this side through the sealing ring 115, thereby ensuring the sealing between the cylinder piston 11 and the inner wall of the cylinder.
[0059] Specifically, the two oil plug end covers 116 can be buckled at the two ends of the oil plug body 111 (such as Figure 8 The left and right ends shown in the figure) can limit and clamp the sealing ring 115, so that the sealing ring 115 is limited and clamped between the side wall of the sealing installation groove 1112, that is, the limiting step surface of the sealing ring 115 and the oil plug end cover 116, which can facilitate the disassembly and assembly of the sealing ring 115. At the same time, through the V-shaped opening 1151 of the sealing ring 115 toward the cavity on the side of the end, the sealing ring 115 can perform oil sealing on the cavity on this side to ensure the sealing between the cylinder piston 11 and the inner wall of the cylinder. Especially when the oil plug end cover 116 is worn with use, the sealing ring 115 can improve the sealing performance and avoid the circulation of hydraulic oil between the cavities on both sides, thereby ensuring that the cylinder can accurately output hydraulic pressure with the movement of the cylinder piston and ensure the clamping stability of the workpiece. Among them, the side wall of the support part 1152 (such as Figure 8 The left side wall as shown in the figure can abut against the side wall of the oil plug end cover 116, which can increase the contact area between the sealing ring 115 and the oil plug end cover 116.
[0060] In this embodiment, the oil plug end cover 116 is provided with a clamping groove 1161 adapted to the bottom wall of the seal installation groove 1112, and is used to be clamped on the bottom wall of the seal installation groove 1112. Specifically, the clamping groove 1161 can be a circular groove structure, which is adapted to the seal installation groove 1112 to be buckled on the seal installation groove 1112.
[0061] Continue to see Figure 8 The two oil plug end covers 116 are provided with coaxially arranged mounting holes 114 for mounting the piston rod 3, so that the piston rod 3 can pass through the oil plug body 111 and the two oil plug end covers 116, and be fixedly mounted on the oil plug body 111 and the two oil plug end covers 116, thereby realizing the linkage between the two, especially realizing the linkage between the oil cylinder piston 11 and the cylinder piston 21.
[0062] In summary, the oil cylinder piston with anti-deviation effect and the gas-liquid booster pump with the oil cylinder piston provided by the embodiments of the utility model elastically support the anti-deviation ring through the elastic ring in the support anti-deviation groove of the oil plug body, so that the support anti-deviation ring can adapt to the inner wall of the oil cylinder barrel and the sliding support abuts against the inner wall surface of the oil cylinder barrel, which not only seals the oil plug body 111, but also provides balanced support for the sliding of the oil plug body 111, prevents the skew wear of the oil plug body 111, prevents the skew wear of the sealing ring on the oil plug body 111, and improves the oil sealing effect of the oil plug body 111. At the same time, the setting of the elastic ring 112 can play a buffering role, alleviate the transition wear between the support anti-deviation ring 113, the oil plug body and the inner wall of the oil cylinder barrel, so as to extend the service life, and solves the problem of insufficient sealing of the oil cylinder piston caused by eccentric wear of the sealing ring on the oil cylinder piston.
[0063] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0064] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A cylinder piston with anti-deflection effect, characterized in that: include: Oil plug body; wherein, A support anti-deflection groove is provided in the middle position of the oil plug body, an elastic ring is provided in the support anti-deflection groove, and a support anti-deflection ring is provided on the outer periphery of the elastic ring. The support anti-deflection ring is used to abut against the inner wall of the cylinder barrel to seal and provide balanced support for the sliding of the oil plug body to prevent the oil plug body from deflecting and wearing.
2. The oil cylinder piston according to claim 1, characterized in that: The supporting anti-deflection ring is a wear-resistant ring.
3. A cylinder piston according to claim 1 or 2, characterized in that: The supporting anti-deflection ring is a ring-shaped structure made of PU material.
4. The oil cylinder piston according to claim 1 or 2, characterized in that: The cross section of the supporting anti-deflection ring is a square structure.
5. The oil cylinder piston according to claim 1 or 2, characterized in that: The support anti-deviation groove is a U-shaped structure and is arranged along the entire circumference of the oil plug body, so that the support anti-deviation ring and the elastic ring can be clamped in the support anti-deviation groove.
6. The oil cylinder piston according to claim 1 or 2, characterized in that: Both ends of the oil plug body are provided with sealing installation grooves, and each sealing installation groove is provided with a sealing ring; The two sealing rings are both V-shaped sealing rings, and the V-shaped openings of the two V-shaped sealing rings are arranged back to back for oil sealing; or, the two sealing rings are both O-shaped sealing rings; or, one of the sealing rings is an O-shaped sealing ring, and the other sealing ring is a V-shaped sealing ring, and the V-shaped opening of the V-shaped sealing ring is arranged back to the O-shaped sealing ring.
7. The oil cylinder piston according to claim 6, characterized in that: Also includes: Two oil plug end caps; among them, The sealing installation groove is a notch structure with openings on both sides and is arranged along the entire circumference of the oil plug body, so that the side wall of the sealing installation groove serves as a limiting step surface; The two oil plug end covers are respectively arranged at the two ends of the oil plug body, and are used to clamp the sealing ring so that the sealing ring is limitedly clamped between the limiting step surface of the sealing installation groove and the oil plug end cover.
8. The oil cylinder piston according to claim 6, characterized in that: The sealing installation groove is a U-shaped structure and is arranged along the entire circumference of the oil plug body, so that the sealing ring can be stuck in the sealing installation groove; or, The sealing installation groove is a notch structure with openings on both sides and is arranged along the entire circumference of the oil plug body, so that the side wall of the sealing installation groove serves as a limiting step surface.