CN211820174U - Hydraulic cylinder combination seal structure - Google Patents
Hydraulic cylinder combination seal structure Download PDFInfo
- Publication number
- CN211820174U CN211820174U CN202020298956.5U CN202020298956U CN211820174U CN 211820174 U CN211820174 U CN 211820174U CN 202020298956 U CN202020298956 U CN 202020298956U CN 211820174 U CN211820174 U CN 211820174U
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- piston
- push rod
- cylinder body
- seal structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of sealing structures, in particular to a hydraulic cylinder combined sealing structure, which comprises a hydraulic cylinder body, a fixing seat and a push rod, wherein a splicing cover is arranged on the side wall on the right side of the hydraulic cylinder, the push rod is arranged in the hydraulic cylinder body, one side of the push rod is provided with a first piston, the other side of the first piston is provided with a second piston, one side of the second piston is provided with a fixing nut, the outer surface of the left side of the push rod is provided with threads, the left side of the top part in the hydraulic cylinder body is provided with a first communicating port, the right side of the top part in the hydraulic cylinder body is provided with a second communicating port, the top part and the bottom part on the left side in the hydraulic cylinder body are both fixedly provided with a limiting block, the right side of the limiting block is, this device simple structure, the leakproofness is better and the practicality is higher.
Description
Technical Field
The utility model relates to a seal structure technical field specifically is a hydraulic cylinder combination seal structure.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.
The hydraulic cylinder is an actuating element in a hydraulic transmission system and is an energy conversion device for converting hydraulic energy into mechanical energy. The hydraulic motor performs a continuous rotary motion, while the hydraulic cylinder performs a reciprocating motion. The hydraulic cylinder has three types, namely a piston cylinder, a plunger cylinder and a swing cylinder, wherein the piston cylinder and the plunger cylinder realize reciprocating linear motion and output speed and thrust, and the swing cylinder realizes reciprocating swing and outputs angular speed (rotating speed) and torque. The hydraulic cylinder may be used in combination of two or more or in combination with other mechanisms, in addition to being used singly. To accomplish a particular function. The hydraulic cylinder has simple structure and reliable work and is widely applied to a hydraulic system of a machine tool.
Pneumatic cylinder on the existing market can lead to the gas tightness to go wrong in long-time use, can't guarantee that the condition such as gas leakage appears in the inside seal to make the kinetic energy efficiency of pneumatic cylinder descend by a wide margin.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic cylinder combination seal structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a hydraulic cylinder combined sealing structure comprises a hydraulic cylinder body, a fixing seat and a push rod, wherein the left side of the hydraulic cylinder body is fixedly provided with the fixing seat, the outer side of the fixing seat is provided with a fixing hole, the side wall on the right side of the hydraulic cylinder is provided with an inserting cover, the inside of the hydraulic cylinder body is provided with the push rod, one side of the push rod is provided with a first piston, the other side of the first piston is provided with a second piston, one side of the second piston is provided with a fixing nut, the outer surface on the left side of the push rod is provided with a thread, the left side of the top inside the hydraulic cylinder body is provided with a first communicating hole, the right side of the top inside the hydraulic cylinder body is provided with a second communicating hole, the top and the bottom of the left side inside of the hydraulic cylinder body are both, and a cushion is arranged between the sealing ring and the limiting block.
Preferably, the push rod penetrates through the plug cover and the plug hole to be plugged in the interior of the hydraulic cylinder.
Preferably, the first piston and the second piston are sleeved on the outer side of the left side of the push rod.
Preferably, the fixing nut is sleeved on the outer side of the push rod through a thread and is positioned on the left side of the second piston.
Preferably, the cushion and the sealing ring are integrally formed.
Preferably, the right side of the sealing ring inserted in the hydraulic cylinder body is positioned between the limiting block and the inserting cover.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, through setting up first piston and second piston, can be in the long-time use of hydraulic pump, the piston can probably have wearing and tearing to lead to the gas tightness to go wrong to appear unable sealedly, lead to kinetic energy to descend by a wide margin, and set up two pistons and can be when a piston goes wrong, another still can guarantee the inside leakproofness of pneumatic cylinder, does not delay the work of pneumatic cylinder, and change etc. more convenience after accomplishing work.
2. The utility model discloses in, through setting up the sealing washer, can be more effectual the leakproofness of having guaranteed the pneumatic cylinder, and the cushion can effectual reduction sealing washer and the stopper between the friction, improved the life of sealing washer, and can come to put into or take out the sealing washer through dismantling the grafting lid, very labour saving and time saving.
3. The utility model discloses in, through setting up fixation nut, can be more firm fix first piston and second piston on the catch bar, and can take off fixation nut through the screw thread, the convenience is to the change and the maintenance of first piston and second piston, and the dismouting is comparatively convenient.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a schematic view of the internal structure of the sealing ring of the present invention;
FIG. 3 is an enlarged view of the position A of the present invention;
in the figure: 1. a hydraulic cylinder body; 2. a first piston; 3. a second piston; 4. fixing a nut; 5. a thread; 6. a first communication port; 7. a fixed seat; 8. a fixing hole; 9. a second communication port; 10. a plug cover; 11. a push rod; 12. a seal ring; 13. inserting holes; 14. a limiting block; 15. a soft cushion.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a hydraulic cylinder combined sealing structure comprises a hydraulic cylinder body 1, a fixing seat 7 and a push rod 11, wherein the fixing seat 7 is fixedly installed on the left side of the hydraulic cylinder body 1, a fixing hole 8 is formed in the outer side of the fixing seat 7, an inserting cover 10 is installed on the side wall on the right side of a hydraulic cylinder, the push rod 11 is arranged inside the hydraulic cylinder body 1, a first piston 2 is arranged on one side of the push rod 11, a second piston 3 is arranged on the other side of the first piston 2, the first piston 2 and the second piston 3 are both sleeved on the outer side of the left side of the push rod 11, the piston can be worn to cause air tightness problems in long-time use of a hydraulic pump, so that sealing cannot be realized, kinetic energy is greatly reduced, when one piston is provided with two pistons, the other piston can still ensure the sealing performance inside the hydraulic cylinder, the work of the hydraulic cylinder is not delayed, the, more convenient, a fixing nut 4 is installed on one side of a second piston 3, threads 5 are arranged on the outer surface of the left side of a push rod 11, the fixing nut 4 is sleeved on the outer side of the push rod 11 through the threads 5 and is positioned on the left side of the second piston 3, a first piston 2 and a second piston 3 can be more firmly fixed on the push rod 11, the fixing nut 4 can be taken down through the threads 5, the first piston 2 and the second piston 3 can be conveniently replaced and maintained, the disassembly and the assembly are more convenient, a first communicating port 6 is formed in the left side of the top inside a hydraulic cylinder body 1, a second communicating port 9 is formed in the right side of the top inside the hydraulic cylinder body 1, limiting blocks 14 are fixedly installed at the top and the bottom of the left side inside the hydraulic cylinder body 1, sealing rings 12 are installed on the right sides of the limiting blocks 14, the sealing rings 12 are inserted between the, spliced eye 13 has been seted up to the inside of sealing washer 12, catch bar 11 runs through grafting lid 10 and spliced eye 13 and pegs graft in the inside of pneumatic cylinder, be equipped with cushion 15 between sealing washer 12 and the stopper 14, integrated into one piece between cushion 15 and the sealing washer 12, the leakproofness of pneumatic cylinder can more effectually be guaranteed, and cushion 15 can effectually reduce the friction between sealing washer 12 and the stopper 14, the life of sealing washer 12 has been improved, and can put into or take out sealing washer 12 through dismantling grafting lid 10, very labour saving and time saving.
The utility model discloses work flow: when the hydraulic pump is used, the push rod 11 drives the first piston 2 and the second piston 3 to move, when the hydraulic pump is used for a long time, the pistons may be worn to cause air tightness problems, so that sealing cannot be realized, kinetic energy is greatly reduced, when one piston is in a problem, the other piston still can ensure the sealing performance inside the hydraulic cylinder, the work of the hydraulic cylinder is not delayed, the hydraulic cylinder is replaced after the work is finished, and the like, the sealing ring 12 is more convenient, the sealing performance of the hydraulic cylinder is more effectively ensured, the cushion 15 can effectively reduce friction between the sealing ring 12 and the limiting block 14, the service life of the sealing ring 12 is prolonged, the sealing ring 12 can be put in or taken out by disassembling the plugging cover 10, time and labor are saved, the first piston 2 and the second piston 3 can be more firmly fixed on the push rod 11 through the fixing nut 4, and can take off fixation nut 4 through screw thread 5, the change and the maintenance to first piston 2 and second piston 3 are convenient, and the dismouting is comparatively convenient, and this device simple structure, the leakproofness is better and the practicality is higher.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a hydraulic cylinder combination seal structure, includes pneumatic cylinder body (1), fixing base (7) and catch bar (11), its characterized in that: the left side of the hydraulic cylinder body (1) is fixedly provided with a fixing seat (7), the outer side of the fixing seat (7) is provided with a fixing hole (8), the side wall on the right side of the hydraulic cylinder is provided with an inserting cover (10), the inside of the hydraulic cylinder body (1) is provided with a push rod (11), one side of the push rod (11) is provided with a first piston (2), the other side of the first piston (2) is provided with a second piston (3), one side of the second piston (3) is provided with a fixing nut (4), the outer surface on the left side of the push rod (11) is provided with a thread (5), the left side of the top inside the hydraulic cylinder body (1) is provided with a first communicating hole (6), the right side of the top inside the hydraulic cylinder body (1) is provided with a second communicating hole (9), and the top and the bottom on the left side inside, the right side of the limiting block (14) is provided with a sealing ring (12), the inside of the sealing ring (12) is provided with an inserting hole (13), and a cushion (15) is arranged between the sealing ring (12) and the limiting block (14).
2. The hydraulic cylinder combination seal structure of claim 1, characterized in that: the push rod (11) penetrates through the plug cover (10) and the plug hole (13) to be plugged in the interior of the hydraulic cylinder.
3. The hydraulic cylinder combination seal structure of claim 1, characterized in that: the first piston (2) and the second piston (3) are sleeved on the outer side of the left side of the push rod (11).
4. The hydraulic cylinder combination seal structure of claim 1, characterized in that: the fixed nut (4) is sleeved on the outer side of the push rod (11) through a thread (5) and is positioned on the left side of the second piston (3).
5. The hydraulic cylinder combination seal structure of claim 1, characterized in that: the soft pad (15) and the sealing ring (12) are integrally formed.
6. The hydraulic cylinder combination seal structure of claim 1, characterized in that: the right side of the sealing ring (12) inserted in the hydraulic cylinder body (1) is positioned between the limiting block (14) and the inserting cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298956.5U CN211820174U (en) | 2020-03-11 | 2020-03-11 | Hydraulic cylinder combination seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298956.5U CN211820174U (en) | 2020-03-11 | 2020-03-11 | Hydraulic cylinder combination seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820174U true CN211820174U (en) | 2020-10-30 |
Family
ID=73007408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020298956.5U Active CN211820174U (en) | 2020-03-11 | 2020-03-11 | Hydraulic cylinder combination seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211820174U (en) |
-
2020
- 2020-03-11 CN CN202020298956.5U patent/CN211820174U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211820174U (en) | Hydraulic cylinder combination seal structure | |
| CN212564695U (en) | Waterproof hammer buffering angle valve | |
| CN211009895U (en) | Hydraulic oil cylinder | |
| CN111810485A (en) | Hydraulic oil cylinder assembly | |
| CN216666080U (en) | Sealing structure for hydraulic cylinder | |
| CN208702806U (en) | A kind of sealing structure for oil cylinder of hydraulic support | |
| CN202732803U (en) | Spring reset type water turbine oil brake | |
| CN111677714B (en) | Piston structure for high-pressure low-friction hydraulic cylinder | |
| CN206972654U (en) | For improving the hydraulic cylinder of sealing property | |
| CN210769627U (en) | Single-rod piston type hydraulic cylinder | |
| CN210978057U (en) | Oil cylinder for mechanical driving arm | |
| CN211144965U (en) | Hydraulic cylinder capable of effectively preventing fatigue fracture | |
| CN212272711U (en) | Hydraulic cylinder convenient to maintain | |
| CN107461376A (en) | For improving the hydraulic cylinder of sealing property | |
| CN209959603U (en) | Sealing structure for hydraulic cylinder head | |
| CN216767933U (en) | Oil cylinder assembly with high air tightness based on elevator | |
| CN219119564U (en) | Hydraulic cylinder gland with sealing structure | |
| CN210920116U (en) | Sealing ring applied to hydraulic oil cylinder | |
| CN212775026U (en) | Hydraulic cylinder convenient to loading and unloading sealing washer | |
| CN210889530U (en) | Novel hydraulic cylinder lower cover | |
| CN204985167U (en) | Starting characteristic is waiting pneumatic cylinder of percentage type | |
| CN218780763U (en) | External dynamic medium-high pressure sealing ring for one-way hole | |
| CN210770238U (en) | Piston rod sealing assembly of piston type hydraulic cylinder | |
| CN210397299U (en) | Sealing device for splicing oil cylinders | |
| CN218030900U (en) | Cylinder with micro valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |