CN212356376U - Hydraulic jack - Google Patents
Hydraulic jack Download PDFInfo
- Publication number
- CN212356376U CN212356376U CN202020747145.9U CN202020747145U CN212356376U CN 212356376 U CN212356376 U CN 212356376U CN 202020747145 U CN202020747145 U CN 202020747145U CN 212356376 U CN212356376 U CN 212356376U
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- Prior art keywords
- plunger
- ring
- wear
- mounting groove
- ring mounting
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- 238000007789 sealing Methods 0.000 claims abstract description 47
- 239000000428 dust Substances 0.000 claims description 27
- 238000012856 packing Methods 0.000 claims 3
- 238000009434 installation Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 abstract description 23
- 239000010720 hydraulic oil Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a hydraulic jack belongs to hydraulic equipment technical field. The plunger solves the problem that the peripheral surface of the existing plunger and the hole wall of the cylinder body are abraded by friction. The hydraulic jack comprises a hydraulic cylinder and a plunger, wherein the hydraulic cylinder is provided with a plunger hole, the plunger is arranged in the plunger hole in a sliding manner, the hole wall of the plunger hole is provided with a dustproof ring mounting groove, a sealing ring mounting groove and two wear-resistant ring mounting grooves, the sealing ring mounting groove is positioned between the two wear-resistant ring mounting grooves, and the dustproof ring mounting groove is positioned above the two wear-resistant ring mounting grooves; the wear-resisting ring is arranged in each wear-resisting ring mounting groove, the wear-resisting ring is sleeved on the plunger, the sealing ring mounting groove is internally provided with a sealing ring, the sealing ring is sleeved on the plunger, and the dust-proof ring mounting groove is internally provided with a dust-proof ring, and the dust-proof ring is sleeved on the plunger. The structure solves the problem that the peripheral surface of the plunger piston and the hole wall of the cylinder body are abraded by friction.
Description
Technical Field
The utility model belongs to the technical field of hydraulic equipment, refer in particular to a hydraulic jack.
Background
The hydraulic jack is characterized by that it adopts plunger piston or hydraulic cylinder as rigid jacking component, and has compact structure, stable operation, large jacking force and self-locking property, and is formed from oil chamber, oil pump, oil storage chamber, piston, crank and oil valve.
At present, adopt the sealing washer sealed between the pore wall in the plunger hole of traditional plunger and cylinder body, the setting of sealing washer avoids the hydraulic oil in the cylinder body to spill from the gap between the pore wall in plunger and plunger hole, the piston is at the in-process along vertical reciprocating motion, the outer peripheral face of piston can with the pore wall contact friction in plunger hole, lead to the pore wall in plunger hole or/and the outer peripheral face wearing and tearing of plunger, and then make the clearance increase between the outer peripheral face of plunger and the pore wall in plunger hole, lead to the sealing washer can't carry out effectual sealing to this clearance, make the hydraulic oil in the cylinder body spill from the gap.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided a hydraulic jack, the utility model aims to solve the technical problem that: how to solve the problem that the outer peripheral face of plunger and the pore wall of cylinder body take place frictional wear.
The purpose of the utility model can be realized by the following technical proposal:
a hydraulic jack comprises a hydraulic cylinder and a plunger, wherein the hydraulic cylinder is provided with a plunger hole, and the plunger is arranged in the plunger hole in a sliding manner; the piston is characterized in that each wear-resisting ring mounting groove is internally provided with a wear-resisting ring, the wear-resisting ring is sleeved on the piston, the sealing ring mounting groove is internally provided with a sealing ring, the sealing ring is sleeved on the piston, and the dustproof ring mounting groove is internally provided with a dustproof ring, and the dustproof ring is sleeved on the piston.
In the hydraulic jack, in the process that the plunger piston vertically reciprocates in the plunger piston hole, the two wear-resisting rings play a role in guiding and supporting the reciprocating movement of the plunger piston, the contact friction between the outer peripheral surface of the plunger piston and the hole wall of the plunger piston hole is avoided, the abrasion between the outer peripheral surface of the plunger piston and the hole wall of the plunger piston hole is further avoided, the hydraulic oil in the hydraulic cylinder is prevented from leaking out from a gap between the outer peripheral surface of the plunger piston and the hole wall of the plunger piston hole due to the arrangement of the sealing ring, and the hydraulic jack is ensured to be oil-tight in the; lubricating oil is stored between the two wear-resistant rings, and the sealing ring is positioned between the two wear-resistant rings, so that a better lubricating effect is always achieved between the sealing ring and the plunger piston, the abrasion of the sealing ring is reduced, and the service life of the sealing ring is prolonged; in addition, the dust ring is arranged to prevent external dust from entering the hydraulic cylinder to pollute the hydraulic oil.
In the above hydraulic jack, two seal ring mounting grooves are provided, and the seal ring is provided in each seal ring mounting groove. Through the arrangement of the structure, the two sealing rings improve the sealing effect on one hand, and further reduce the risk that hydraulic oil in the hydraulic cylinder leaks out from the space between the peripheral surface of the plunger and the wall of the plunger hole; on the other hand, store lubricating oil between two sealing rings for have better lubricated effect all the time between sealing ring and the plunger, further reduce the wearing and tearing of sealing ring, prolong the life of sealing ring.
In the above hydraulic jack, the inner peripheral surface of the seal ring has two annular seal lips, an annular oil storage groove is formed between the two seal lips, and the outer ends of the seal lips abut against the outer peripheral surface of the plunger. Through the setting of this structure, there is lubricating oil between two sealed lips to save for have better lubricated effect all the time between sealing washer and the plunger, further reduce the wearing and tearing of sealing washer, prolong the life of sealing washer.
In the hydraulic jack, the inner edge of the upper end surface of the dustproof ring protrudes upwards to form an annular dustproof lip, the outer circumferential surface of the dustproof lip is a conical surface, and the outer end of the dustproof lip is attached to the outer circumferential surface of the plunger. Through the setting of this structure, external dust falls on dustproof lip's outer peripheral face and rolls down along the conical surface and falls, avoids external dust to fall into the clearance between the outer peripheral face of dustproof lip and plunger.
In one of the above mentioned hydraulic jacks, one wear-resistant ring is located at the upper port of the plunger hole and the other wear-resistant ring is located at the lower port of the plunger hole. Through the setting of this structure, improve the direction and the supporting effect of wearing ring to the plunger, guarantee that the plunger does not take place the skew along vertical reciprocating motion's in-process, and then avoid the outer peripheral face of plunger and the pore wall in plunger hole to take place the friction and lead to wearing and tearing.
Compared with the prior art, the utility model discloses a hydraulic jack has following advantage: in the hydraulic jack, in the process that the plunger piston vertically reciprocates in the plunger piston hole, the two wear-resisting rings play a role in guiding and supporting the reciprocating movement of the plunger piston, the contact friction between the outer peripheral surface of the plunger piston and the hole wall of the plunger piston hole is avoided, the abrasion between the outer peripheral surface of the plunger piston and the hole wall of the plunger piston hole is further avoided, the hydraulic oil in the hydraulic cylinder is prevented from leaking out from a gap between the outer peripheral surface of the plunger piston and the hole wall of the plunger piston hole due to the arrangement of the sealing ring, and the hydraulic jack is ensured to be oil-tight in the; lubricating oil is stored between the two wear-resistant rings, and the sealing ring is positioned between the two wear-resistant rings, so that a better lubricating effect is always achieved between the sealing ring and the plunger piston, the abrasion of the sealing ring is reduced, and the service life of the sealing ring is prolonged; in addition, the dust ring is arranged to prevent external dust from entering the hydraulic cylinder to pollute the hydraulic oil.
Drawings
Fig. 1 is a schematic diagram of the explosion structure of the present invention.
Fig. 2 is a schematic view of the partial cross-sectional structure of the present invention.
In the figure, 1, a hydraulic cylinder; 2. a plunger; 3. a plunger hole; 31. a dust ring mounting groove; 32. a sealing ring mounting groove; 33. a wear ring mounting groove; 5. a wear ring; 6. a seal ring; 61. a sealing lip; 62. an oil storage tank; 7. a dust ring; 71. dust lip portion.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the hydraulic jack includes a hydraulic cylinder 1 and a plunger 2, the hydraulic cylinder 1 is provided with a plunger hole 3, the plunger 2 is slidably disposed in the plunger hole 3, a dust ring mounting groove 31, a seal ring mounting groove 32 and two wear-resistant ring mounting grooves 33 are disposed on the hole wall of the plunger hole 3, the seal ring mounting groove 32 is disposed between the two wear-resistant ring mounting grooves 33, and the dust ring mounting groove 31 is disposed above the two wear-resistant ring mounting grooves 33.
As shown in fig. 1 and 2, each wear-resistant ring mounting groove 33 is provided with a wear-resistant ring 5, and the wear-resistant rings 5 are sleeved on the plunger 2, wherein one wear-resistant ring 5 is located at the upper port of the plunger hole 3, and the other wear-resistant ring 5 is located at the lower port of the plunger hole 3, and the two wear-resistant rings 5 play a role in guiding and supporting the reciprocating movement of the plunger 2, so that the contact and friction between the outer circumferential surface of the plunger 2 and the hole wall of the plunger hole 3 are avoided, and further the abrasion between the outer circumferential surface of the plunger 2 and the hole wall of the plunger hole 3; in the embodiment, two sealing ring mounting grooves 32 are provided, each sealing ring mounting groove 32 is internally provided with a sealing ring 6, the sealing ring 6 is sleeved on the plunger 2, and the sealing rings 6 are arranged to prevent hydraulic oil in the hydraulic cylinder 1 from leaking out from a gap between the outer peripheral surface of the plunger 2 and the hole wall of the plunger hole 3, so that the hydraulic jack is ensured to be oil-tight in the working process; the dust ring 7 is arranged in the dust ring mounting groove 31, the dust ring 7 is sleeved on the plunger 2, and the dust ring 7 is arranged to prevent external dust from entering the hydraulic cylinder 1 to pollute hydraulic oil.
As shown in fig. 1 and 2, the inner peripheral surface of the seal ring 6 has two annular seal lips 61, an annular oil reservoir 62 is formed between the two seal lips 61, and the outer ends of the seal lips 61 abut against the outer peripheral surface of the plunger 2.
As shown in fig. 1 and 2, the inner edge of the upper end surface of the dust seal 7 is formed to protrude upward to form an annular dust lip 71, the outer peripheral surface of the dust lip 71 is a tapered surface, and the outer end of the dust lip 71 abuts against the outer peripheral surface of the plunger 2.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A hydraulic jack comprises a hydraulic cylinder (1) and a plunger (2), wherein the hydraulic cylinder (1) is provided with a plunger hole (3), and the plunger (2) is arranged in the plunger hole (3) in a sliding manner, and is characterized in that a dustproof ring mounting groove (31), a sealing ring mounting groove (32) and two wear-resistant ring mounting grooves (33) are formed in the wall of the plunger hole (3), the sealing ring mounting groove (32) is positioned between the two wear-resistant ring mounting grooves (33), and the dustproof ring mounting groove (31) is positioned above the two wear-resistant ring mounting grooves (33); all be provided with wear ring (5) and wear ring (5) cover is established on plunger (2) in every wear ring mounting groove (33), be provided with sealing washer (6) and sealing washer (6) cover is established on plunger (2) in sealing washer mounting groove (32), be provided with dust ring (7) in dust ring mounting groove (31) and dust ring (7) cover is established on plunger (2).
2. The hydraulic jack as claimed in claim 1, wherein the number of the packing ring installation grooves (32) is two, and the packing ring (6) is installed in each packing ring installation groove (32).
3. A hydraulic jack as claimed in claim 1 or 2, wherein the inner periphery of the sealing ring (6) has two annular sealing lips (61), an annular oil reservoir (62) is formed between the two sealing lips (61), and the outer ends of the sealing lips (61) abut against the outer periphery of the plunger (2).
4. The hydraulic jack as claimed in claim 1, wherein the inner edge of the upper end surface of the dust ring (7) is upwardly convex to form a dust lip (71) in a ring shape, the outer circumferential surface of the dust lip (71) is a conical surface, and the outer end of the dust lip (71) abuts against the outer circumferential surface of the plunger (2).
5. A hydraulic jack as claimed in claim 1 in which one of the wear resistant rings (5) is located at the upper port of the ram bore (3) and the other wear resistant ring (5) is located at the lower port of the ram bore (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020747145.9U CN212356376U (en) | 2020-05-08 | 2020-05-08 | Hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020747145.9U CN212356376U (en) | 2020-05-08 | 2020-05-08 | Hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212356376U true CN212356376U (en) | 2021-01-15 |
Family
ID=74135744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020747145.9U Active CN212356376U (en) | 2020-05-08 | 2020-05-08 | Hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212356376U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060668A (en) * | 2021-04-14 | 2021-07-02 | 浙江海蜜机械有限公司 | An integrated electric hydraulic jack |
-
2020
- 2020-05-08 CN CN202020747145.9U patent/CN212356376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060668A (en) * | 2021-04-14 | 2021-07-02 | 浙江海蜜机械有限公司 | An integrated electric hydraulic jack |
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