CN210829943U - Anti-loosening device for piston of hydraulic cylinder - Google Patents
Anti-loosening device for piston of hydraulic cylinder Download PDFInfo
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- CN210829943U CN210829943U CN201921980243.0U CN201921980243U CN210829943U CN 210829943 U CN210829943 U CN 210829943U CN 201921980243 U CN201921980243 U CN 201921980243U CN 210829943 U CN210829943 U CN 210829943U
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- 238000007789 sealing Methods 0.000 claims description 11
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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Abstract
The utility model discloses a pneumatic cylinder piston locking device belongs to hydraulic component technical field. A hydraulic cylinder piston anti-loosening device comprises a hydraulic rod and a rod plug, wherein the rod plug is detachably connected to the hydraulic rod, a first key groove is formed in the hydraulic rod, a second key groove is formed in the rod plug, the first key groove is matched with the second key groove through a flat key, a screw rod is connected to the hydraulic rod, a first through hole is formed in the rod plug, the screw rod penetrates through the first through hole and is connected with a nut, a first screw hole is formed in the rod plug, a second through hole is formed in the nut, a screw is connected in the second through hole in a sliding mode, the screw penetrates through the second through hole and is in threaded connection with the first screw hole, an arc-shaped hole is formed in the screw, and a string wire is detachably connected in the arc-shaped hole; the utility model discloses use the machinery of cluster silk formula locking, make the nut and the pole stopper make the integral type to the cooperation key-type connection makes the pole stopper lock completely, prevents effectively that the pole stopper from droing.
Description
Technical Field
The utility model relates to a hydraulic component technical field especially relates to a pneumatic cylinder piston locking device.
Background
The hydraulic cylinder is an element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion or swinging motion; the hydraulic cylinder has simple structure and reliable work, can avoid a speed reducer when realizing reciprocating motion, has no transmission clearance and can ensure the stability of motion, so the hydraulic cylinder is widely applied to the field of machinery.
Among the prior art, because traditional piston is connected with the hydraulic stem and is used nut cooperation screw rod snap-on more, its locking effect is relatively poor, and the pneumatic cylinder is inside can't maintain in the use, so inside piston makes the nut move back the silk very easily with the hydraulic stem in highly compressed repetitive motion process, in order to guarantee safe in utilizationly, need a pneumatic cylinder piston locking device on the effectual messenger's piston fixes the hydraulic stem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects in the prior art and providing a hydraulic cylinder piston anti-loosening device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a pneumatic cylinder piston anti loosening device, includes hydraulic stem and pole stopper, the pole stopper can be dismantled and connect on the hydraulic stem, first keyway has been seted up on the hydraulic stem, the second keyway has been seted up on the pole stopper, first keyway cooperatees through the parallel key with the second keyway, be connected with the screw rod on the hydraulic stem, first through-hole has been seted up on the pole stopper, the screw rod runs through first through-hole and is connected with the nut, first screw has been seted up on the pole stopper, the second through-hole has been seted up on the nut, sliding connection has the screw in the second through-hole, just the screw runs through second through-hole and first screw threaded connection, the arc hole has been seted up on the screw, the downthehole string silk that can dismantle of arc is connected with.
Preferably, the hydraulic rod is connected with a screw rod, the nut is provided with a second screw hole, and the second screw hole is in threaded fit with the screw rod.
Preferably, the hydraulic rod is provided with a shaft shoulder, and the side surface of the rod plug is abutted against the shaft shoulder.
Preferably, the outer wall of the rod plug is provided with a groove, and a sealing ring is connected in the groove.
Preferably, the sealing ring is made of butadiene-acrylonitrile rubber.
Preferably, the screws are evenly distributed on the nut.
Compared with the prior art, the utility model provides a pneumatic cylinder piston locking device possesses following beneficial effect:
1. the hydraulic cylinder piston anti-loosening device is characterized in that a rod plug is sleeved on a hydraulic rod, a first key groove and a second key groove are aligned, a flat key is inserted to prevent the rod plug from rotating on the hydraulic rod, a nut is screwed on a screw rod, a second through hole is aligned with a first screw hole, one surface of the nut is attached to one surface of the rod plug to further abut against the rod plug, the screw penetrates through the second through hole and is screwed into the first screw hole, the nut is locked on the rod plug to form a whole, after the screw is screwed, a string wire penetrates into an arc-shaped hole to connect the screws two by two and is screwed, the number of the screws is non-zero positive even number and is uniformly distributed on the nut in a surrounding manner, the string wire needs to pay attention to the screwing direction when connecting the screws, namely, when one screw is loosened, the other screw connected with the screw needs to be screwed in the screwing direction, so that the screws are prevented from falling off, finally, the sealing ring can be sleeved in the groove, the hydraulic rod is arranged in the hydraulic cylinder cavity, the nut and the rod plug are connected into a whole by utilizing the string wire, the rod plug is effectively prevented from withdrawing and falling off in the using process by matching with the flat key, and the working safety of the hydraulic cylinder is ensured.
2. This pneumatic cylinder piston locking device is connected with the screw rod through the hydraulic stem on, has seted up the second screw on the nut, and the shaft shoulder has been seted up with screw rod screw-thread fit on the hydraulic stem to the second screw, and the side of pole stopper offsets with the shaft shoulder, utilizes nut and shaft shoulder to support the two sides of pole stopper, prevents the pole stopper drunkenness.
3. This pneumatic cylinder piston locking device is seted up flutedly through the pole stopper outer wall, and the recess in-connection has the sealing washer, utilizes two sealing washers to make the pole stopper closely laminate with the inner wall in hydraulic cylinder chamber, prevents the pressure release.
Drawings
Fig. 1 is a schematic structural view of a locking device for a piston of a hydraulic cylinder according to the present invention;
fig. 2 is a schematic structural view of a second anti-loosening device for a piston of a hydraulic cylinder according to the present invention;
fig. 3 is a third schematic structural view of a check device for a piston of a hydraulic cylinder according to the present invention;
fig. 4 is the structural schematic diagram of the rod plug of the anti-loosening device for the piston of the hydraulic cylinder provided by the utility model.
In the figure: 1. a hydraulic lever; 101. a shaft shoulder; 1011. a first keyway; 102. a screw; 2. a stem plug; 201. a first through hole; 202. a groove; 2021. a seal ring; 203. a second keyway; 2031. a flat bond; 204. a first screw hole; 3. a nut; 301. a second screw hole; 302. a second through hole; 4. a screw; 401. an arc-shaped hole; 402. stringing the silk.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-4, a hydraulic cylinder piston anti-loosening device, including hydraulic stem 1 and pole stopper 2, pole stopper 2 can be dismantled and connect on hydraulic stem 1, first keyway 1011 has been seted up on hydraulic stem 1, second keyway 203 has been seted up on pole stopper 2, first keyway 1011 cooperatees through parallel key 2031 with second keyway 203, be connected with screw rod 102 on the hydraulic stem 1, first through-hole 201 has been seted up on pole stopper 2, screw rod 102 runs through first through-hole 201 and is connected with nut 3, first screw 204 has been seted up on pole stopper 2, second through-hole 302 has been seted up on nut 3, sliding connection has screw 4 in the second through-hole 302, and screw 4 runs through second through-hole 302 and first screw 204 threaded connection, arc hole 401 has been seted up on screw 4, can dismantle in the arc hole 401 and be connected with cluster silk 402.
Referring to fig. 2, a screw 102 is connected to the hydraulic rod 1, a second screw hole 301 is formed in the nut 3, the second screw hole 301 is in threaded fit with the screw 102, a shoulder 101 is formed in the hydraulic rod 1, the side surface of the rod plug 2 abuts against the shoulder 101, and the nut 3 and the shoulder 101 abut against the two surfaces of the rod plug 2 to prevent the rod plug 2 from moving.
Referring to fig. 2, a groove 202 is formed in the outer wall of the rod plug 2, a sealing ring 2021 is connected in the groove 202, and the two sealing rings 2021 are used for tightly attaching the rod plug 2 to the inner wall of the hydraulic cylinder cavity to prevent pressure release.
The sealing ring 2021 is made of nitrile rubber.
The screws 4 are evenly distributed on the nut 3.
The working principle is as follows: in the utility model, the rod plug 2 is sleeved on the hydraulic rod 1, the first key slot 1011 and the second key slot 203 are aligned, the flat key 2031 is inserted for preventing the rod plug 2 from rotating on the hydraulic rod 1, then the nut 3 is screwed on the screw rod 102, the second through hole 302 is aligned with the first screw hole 204, one surface of the nut 3 is attached to one surface of the rod plug 2, and further supports against the rod plug 2, the screw 4 is used for penetrating the second through hole 302 and screwing into the first screw hole 204, the nut 3 is locked on the rod plug 2 to be integrated, after the screw 4 is screwed, the string wire 402 is used for penetrating into the arc-shaped hole 401, the screws 4 are connected in pairs, and the string wire 402 is screwed, here, the number of the screws 4 is a non-zero positive even number and is uniformly distributed on the nut 3, when the string wire 402 is connected with the screws 4, attention needs to be paid to the screwing direction, namely, when one of the screws 4 is loosened, the other screw 4 connected with the hydraulic cylinder must be screwed in the screwing direction, so that the screw 4 is prevented from falling off, finally, the sealing ring 2021 is sleeved in the groove 202, the hydraulic rod 1 is arranged in the hydraulic cylinder cavity, the nut 3 and the rod plug 2 are connected into a whole by using the stringing 402, and the flat key 2031 is matched to effectively prevent the rod plug 2 from withdrawing and falling off in the using process, so that the working safety of the hydraulic cylinder is ensured.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The anti-loosening device for the piston of the hydraulic cylinder comprises a hydraulic rod (1) and a rod plug (2), wherein the rod plug (2) is detachably connected to the hydraulic rod (1), and is characterized in that a first key groove (1011) is formed in the hydraulic rod (1), a second key groove (203) is formed in the rod plug (2), the first key groove (1011) is matched with the second key groove (203) through a flat key (2031), a screw rod (102) is connected to the hydraulic rod (1), a first through hole (201) is formed in the rod plug (2), the screw rod (102) penetrates through the first through hole (201) and is connected with a nut (3), a first screw hole (204) is formed in the rod plug (2), a second through hole (302) is formed in the nut (3), a screw (4) is slidably connected to the second through hole (302), and is in threaded connection with the first screw hole (204), an arc-shaped hole (401) is formed in the screw (4), and a stringing yarn (402) is detachably connected in the arc-shaped hole (401).
2. The looseness-preventing device for the piston of the hydraulic cylinder according to claim 1, wherein a screw (102) is connected to the hydraulic rod (1), a second screw hole (301) is formed in the nut (3), and the second screw hole (301) is in threaded fit with the screw (102).
3. The looseness-preventing device for the piston of the hydraulic cylinder according to claim 1, wherein a shaft shoulder (101) is formed on the hydraulic rod (1), and the side surface of the rod plug (2) abuts against the shaft shoulder (101).
4. The looseness-preventing device for the piston of the hydraulic cylinder, as recited in claim 1, wherein a groove (202) is formed in the outer wall of the rod plug (2), and a sealing ring (2021) is connected in the groove (202).
5. The looseness-preventing device for the piston of the hydraulic cylinder, as recited in claim 4, wherein the sealing ring (2021) is made of nitrile rubber.
6. A cylinder piston anti-loosening device according to claim 1, characterised in that the screws (4) are evenly distributed on the nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921980243.0U CN210829943U (en) | 2019-11-16 | 2019-11-16 | Anti-loosening device for piston of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921980243.0U CN210829943U (en) | 2019-11-16 | 2019-11-16 | Anti-loosening device for piston of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829943U true CN210829943U (en) | 2020-06-23 |
Family
ID=71273647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921980243.0U Active CN210829943U (en) | 2019-11-16 | 2019-11-16 | Anti-loosening device for piston of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210829943U (en) |
-
2019
- 2019-11-16 CN CN201921980243.0U patent/CN210829943U/en active Active
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