CN217003051U - Piston and piston rod connecting structure for oil cylinder - Google Patents
Piston and piston rod connecting structure for oil cylinder Download PDFInfo
- Publication number
- CN217003051U CN217003051U CN202122952618.6U CN202122952618U CN217003051U CN 217003051 U CN217003051 U CN 217003051U CN 202122952618 U CN202122952618 U CN 202122952618U CN 217003051 U CN217003051 U CN 217003051U
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- Prior art keywords
- piston
- piston rod
- sleeve
- oil cylinder
- connecting rod
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- 238000001125 extrusion Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a piston and piston rod connecting structure for an oil cylinder, which comprises a piston rod, wherein a connecting rod is arranged at the left end of the piston rod, a first rubber ring is sleeved on the connecting rod, movable sleeves for expanding and extruding the first rubber ring are arranged on the left side and the right side of the first rubber ring, a lock sleeve for compressing the movable sleeve is arranged on the left side of the movable sleeve, a clamping ring is arranged on the left side of the lock sleeve and clamped on the connecting rod, a piston part of the oil cylinder is formed by the arranged movable sleeves and the first rubber ring, and the piston rod and the piston are fixedly connected by locking and fixing the lock sleeve, so that the connection is more convenient, and meanwhile, the piston has better sealing performance when working by the extrusion and expansion of the two movable sleeves on the first rubber ring.
Description
Technical Field
The utility model relates to the technical field of oil cylinders, in particular to a piston and piston rod connecting structure for an oil cylinder.
Background
The hydraulic cylinder is a linear motion type actuating element with output force in direct proportion to the effective area of the piston and the pressure difference between the two sides of the piston. The piston and the piston rod in the oil cylinder are main structural components of the oil cylinder.
Chinese patent No. CN204646861U discloses a piston and piston rod connecting structure of a hydraulic cylinder, which is characterized in that the rod end of the piston rod is provided with an external thread connecting part, the piston rod inside the external thread connecting part is provided with a clamping groove, and the piston rod inside the clamping groove is provided with a shaft shoulder; the piston comprises a main body part and a pressing sleeve, and the main body part is sleeved on the piston rod and clings to the shaft shoulder; the outer end of the main body part of the piston is provided with a groove, and the two semi-rings are oppositely clamped and sleeved in the clamping groove and the groove; the compressing sleeve comprises a connecting portion and a pressing sleeve portion, an internal thread is arranged on the connecting portion, the connecting portion is connected with the piston rod, the combined sealing ring is sleeved on the main body portion of the piston and is compressed by the pressing sleeve portion of the compressing sleeve, and the inner bottom surface of the pressing sleeve portion compresses the two semi-rings. The hydraulic cylinder is simple and compact in structure, the two semi-rings are adopted to bear variable load and hydraulic impact, the piston and the piston rod of the hydraulic cylinder are reliably connected, the threads are prevented from being extruded and deformed, the hydraulic cylinder is convenient to disassemble and maintain, the service life of the hydraulic cylinder is prolonged, and the use cost is reduced.
However, in the practical use process, the connection between the piston rod and the piston is inconvenient, and the piston has poor sealing performance.
SUMMERY OF THE UTILITY MODEL
In view of the problems mentioned in the background art, an object of the present invention is to provide a piston and piston rod connection structure for an oil cylinder, so as to solve the problems mentioned in the background art.
The technical purpose of the utility model is realized by the following technical scheme:
the utility model provides an used piston of hydro-cylinder and piston rod connection structure, includes the piston rod, and the left end of piston rod is provided with the connecting rod, and the cover is equipped with first rubber circle on the connecting rod, and the left and right sides that is located first rubber circle all is provided with the movable sleeve that expands extruded to it, and the left side that is located the left side movable sleeve is provided with the lock sleeve that compresses tightly to it, and the left side of lock sleeve is provided with the snap ring, and the snap ring clamps on the connecting rod.
Through adopting above-mentioned technical scheme, constitute the piston part of hydro-cylinder through the movable sleeve that sets up and first rubber circle to thereby lock through the lock sleeve and fix and accomplish the fixed connection of piston rod and piston, make and connect convenience more, make the piston during operation have better leakproofness through the extrusion inflation of two movable sleeves to first rubber circle simultaneously.
Preferably, an annular clamping groove matched with the clamping ring is formed in the position, close to the left end, of the connecting rod, and external threads are formed in the position, located on the right side of the annular clamping groove, of the connecting rod.
Through adopting above-mentioned technical scheme, the connecting rod clamps the snap ring fixedly through ring groove to realize revolving through the external screw thread and twist with the lock sleeve and be connected.
Preferably, the movable sleeve is provided with an extrusion inclined plane towards one side of the first rubber ring, one end of the movable sleeve, which is located on the extrusion inclined plane, is provided with a raised sleeve head, the movable sleeve realizes expansion extrusion on the first rubber ring through the arranged extrusion inclined plane, and the first rubber ring is sleeved through the sleeve head.
Preferably, an annular mounting groove is formed in an inner hole of the movable sleeve, and a sealing ring is arranged on the inner side of the mounting groove.
Through adopting above-mentioned technical scheme, the sealing washer that the movable sleeve installed through the mounting groove was realized and the connecting rod between sealed cooperation.
Preferably, the ports of the two ends of the first rubber ring are provided with tapered openings matched with the extrusion inclined planes, and the metal wire is embedded in the inner side of the first rubber ring.
Through adopting above-mentioned technical scheme, first rubber circle passes through the bell and realizes cooperating with the extrusion inflation on extrusion inclined plane to the enhancement to the anti rupture strength of first rubber circle is realized to the wire through setting up.
In summary, the utility model mainly has the following beneficial effects:
The piston component of the oil cylinder is formed by the movable sleeve and the first rubber ring which are arranged, and the locking sleeve is used for locking and fixing to complete the fixed connection of the piston rod and the piston, so that the connection is more convenient, and the piston has better sealing performance when working due to the extrusion expansion of the first rubber ring by the two movable sleeves.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic view of a piston rod of the present invention;
FIG. 3 is a schematic view of the active sheath of the present invention;
FIG. 4 is a schematic view of a first rubber ring of the present invention;
fig. 5 is a schematic view of the lock sleeve of the present invention.
Reference numerals are as follows: 1. a movable sleeve; 11. extruding the inclined plane; 12. mounting grooves; 13. sleeving a head; 2. a first rubber ring; 21. a metal wire; 22. a tapered mouth; 3. a lock sleeve; 31. threading trepanning; 32. sleeving a groove; 4. a snap ring; 5. a piston rod; 51. a connecting shaft; 52. an external thread; 53. an annular neck; 6. a second rubber ring; 7. and (5) sealing rings.
Detailed Description
The technical solutions 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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 5, a piston and piston rod connecting structure for an oil cylinder comprises a piston rod 5, a connecting rod 51 is arranged at the left end of the piston rod 5, a first rubber ring 2 is sleeved on the connecting rod 51, movable sleeves 1 which expand and extrude the connecting rod 2 are arranged on the left and right sides of the first rubber ring 2, a lock sleeve 3 which compresses the movable sleeve 1 is arranged on the left side of the movable sleeve 1, an annular sleeve groove 32 is arranged on the outer circumferential surface of the lock sleeve 3, a second rubber ring 6 is arranged in the sleeve groove 32, the sealing property between the piston and the inner wall of the oil cylinder body is further enhanced through the arranged second rubber ring 6, a snap ring 4 is arranged on the left side of the lock sleeve 3, the snap ring 4 is clamped on the connecting rod 51, an annular clamping groove 53 which is matched with the snap ring 4 is arranged on the position of the connecting rod 51 close to the left end, and an external thread 52 is arranged on the right side of the connecting rod 51 which is arranged on the annular clamping groove 53, the connecting rod 51 clamps and fixes the clamping ring 4 through the annular clamping groove 53, and realizes screwing connection with the lock sleeve 3 through the external thread 52.
Referring to fig. 1 and 3, one side of the movable sleeve 1 facing the first rubber ring 2 is provided with an extrusion inclined plane 11, and one end located on the extrusion inclined plane 11 is provided with a convex sleeve head 13, the movable sleeve 1 realizes the expansion extrusion of the first rubber ring 2 through the extrusion inclined plane 11 that sets up, and suit the first rubber ring 2 through the sleeve head 13, be provided with annular mounting groove 12 in the hole of the movable sleeve 1, and the inboard that is located the mounting groove 12 installs the sealing ring 7, the movable sleeve 1 realizes the sealing fit between the connecting rod 51 through the sealing ring 7 installed in the mounting groove 12.
Referring to fig. 4, the two end ports of the first rubber ring 2 are provided with tapered openings 22 matched with the extrusion inclined planes 11, the metal wires 21 are embedded in the inner side of the first rubber ring 2, the first rubber ring 2 is matched with the extrusion inclined planes 11 in an extrusion expansion manner through the tapered openings 22, and the metal wires 21 are arranged to strengthen the rupture strength of the first rubber ring 2.
The working principle is as follows: referring to fig. 1, 2, 3, 4 and 5, when a piston on a piston rod 5 is installed, two movable sleeves 1 together with a first rubber ring 2 are sleeved on a connecting rod 51, then a lock sleeve 3 is screwed on the connecting rod 51 to press the movable sleeves 1, a clamping ring 4 is clamped in an annular clamping groove 53 to block and limit the lock sleeve 3, so that the piston component of the oil cylinder is connected with the piston rod 5, the two movable sleeves 1 extrude and expand the first rubber ring 2 under the compression of the lock sleeve 3, and then a second rubber ring 6 is sleeved on the lock sleeve 3 to complete the sealing installation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an used piston of hydro-cylinder and piston rod connection structure, includes piston rod (5), its characterized in that: the left end of piston rod (5) is provided with connecting rod (51), the cover is equipped with first rubber circle (2) on connecting rod (51), and the left and right sides that is located first rubber circle (2) all is provided with and expands extruded movable sleeve (1) to it, is located the left side of movable sleeve (1) be provided with lock sleeve (3) that compress tightly to it, the left side of lock sleeve (3) is provided with snap ring (4), and snap ring (4) clamp on connecting rod (51).
2. The piston and piston rod connecting structure for an oil cylinder according to claim 1, characterized in that: the connecting rod (51) is provided with an annular clamping groove (53) matched with the clamping ring (4) at a position close to the left end, and an external thread (52) is arranged at the right side of the connecting rod (51) located at the annular clamping groove (53).
3. The piston and piston rod connecting structure for an oil cylinder according to claim 1, characterized in that: one side of the movable sleeve (1) facing the first rubber ring (2) is provided with an extrusion inclined plane (11), and one end of the movable sleeve, which is positioned on the extrusion inclined plane (11), is provided with a raised sleeve head (13).
4. The piston and piston rod connecting structure for the oil cylinder according to claim 3, characterized in that: an annular mounting groove (12) is formed in an inner hole of the movable sleeve (1), and a sealing ring (7) is mounted on the inner side of the mounting groove (12).
5. The piston and piston rod connecting structure for the oil cylinder according to claim 4, characterized in that: both ends port department of first rubber circle (2) all is provided with and extrudes inclined plane (11) complex tapered opening (22), and the inboard of first rubber circle (2) has buried wire (21) underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122952618.6U CN217003051U (en) | 2021-11-29 | 2021-11-29 | Piston and piston rod connecting structure for oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122952618.6U CN217003051U (en) | 2021-11-29 | 2021-11-29 | Piston and piston rod connecting structure for oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217003051U true CN217003051U (en) | 2022-07-19 |
Family
ID=82382310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122952618.6U Expired - Fee Related CN217003051U (en) | 2021-11-29 | 2021-11-29 | Piston and piston rod connecting structure for oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217003051U (en) |
-
2021
- 2021-11-29 CN CN202122952618.6U patent/CN217003051U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220719 |