CN210371441U - Internal thread oil cylinder - Google Patents
Internal thread oil cylinder Download PDFInfo
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- CN210371441U CN210371441U CN201921208668.XU CN201921208668U CN210371441U CN 210371441 U CN210371441 U CN 210371441U CN 201921208668 U CN201921208668 U CN 201921208668U CN 210371441 U CN210371441 U CN 210371441U
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- cone valve
- oil
- internal thread
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Abstract
The utility model relates to an internal thread oil cylinder, which aims to solve the problem that the water in the clearance between a cross shaft and a cylinder barrel of the existing internal thread oil cylinder can cause the end surfaces of a cylinder cover, a piston and the like to be rusted; the utility model provides an internal thread hydro-cylinder, the position that is close to the cylinder cap on the cylinder is provided with the oil outlet, the cover is equipped with the cross axle on the cylinder, cross axle hole both ends are through fillet weld and cylinder welding, be provided with the communicating flange hydraulic fluid port with the cylinder oil-out on the flange hydraulic fluid port face of cross axle, the cone valve is fixed in the flange hydraulic fluid port on the flange hydraulic fluid port face, the centripetal end protrusion cross axle's interior pore wall face and with the cylinder on the sealed contact connection of oil outlet wall. The utility model discloses in, the cone valve separates between clearance and the cylinder oil-out between with cross axle and the cylinder, makes moisture can not enter into in the cylinder to effectively prevent the moisture in clearance between cross axle and the cylinder to enter into in the cylinder and lead to cylinder cap and piston end face to carry out the corrosion.
Description
Technical Field
The utility model relates to a hydro-cylinder, more specifically say, relate to an internal thread hydro-cylinder.
Background
The cylinder body of the internal thread oil cylinder comprises a cylinder barrel and a cylinder cover connected through an internal thread at the end part of the cylinder barrel. The cylinder barrel is provided with an oil outlet which is communicated with a rod cavity of the oil cylinder. The cylinder barrel is provided with a cross shaft which is connected with the whole machine through shaft lugs at two ends of the cross shaft. The cross shaft is sleeved on the cylinder barrel, an inner hole of the cross shaft is in clearance fit with an outer cylindrical surface of the cylinder barrel, a flange oil port surface is arranged on the cross shaft, a cross shaft oil hole communicated with an oil outlet hole in the cylinder barrel is arranged on the flange oil port surface, and the cross shaft is connected with a pipeline through the flange surface of the cross shaft, so that the connection between a rod cavity of the internal thread oil cylinder and the pipeline is realized.
The inner hole of the cross shaft is in clearance fit with the outer surface of the cylinder barrel, the two ends of the inner hole of the cross shaft are welded with the cylinder barrel through fillet welds, and the welds at the two ends of the inner hole not only play a role in connecting the cross shaft with the cylinder barrel, but also play a role in sealing the cross shaft with the cylinder barrel. When wasing before the cylinder assembly, the fit clearance of cross and cylinder can get into moisture, at the in-process of drying, can't dry the moisture in this clearance, and the hydro-cylinder is before the complete machine uses, and moisture can enter into the hydro-cylinder loculus in the clearance between cross and the cylinder, if longer in this period, can make terminal surface departments such as cylinder cap, piston produce the corrosion and influence the hydro-cylinder cleanliness.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that moisture can make terminal surface departments such as cylinder cap, piston produce the corrosion and influence the problem of hydro-cylinder cleanliness between the cross to current internal thread hydro-cylinder and the cylinder in the clearance, and provide an internal thread hydro-cylinder, can effectively prevent the moisture in clearance between cross and the cylinder to carry out the corrosion to cylinder cap and piston end face in entering into the cylinder.
The utility model discloses a realize that the technical scheme of its purpose is like: the utility model provides an internal thread hydro-cylinder, the cylinder body of this hydro-cylinder includes cylinder and the cylinder cap through cylinder tip internal thread connection, and the position that is close to the cylinder cap on the cylinder is provided with the oil outlet, and the cover is equipped with the cross axle on the cylinder, the welding of fillet weld and cylinder is passed through at cross axle hole both ends, is provided with the communicating flange hydraulic fluid port with the cylinder oil-out on the flange hydraulic fluid port face of cross axle, its characterized in that still includes and is straight cylindric cone valve, the cone valve is fixed in the flange hydraulic fluid port on the flange hydraulic fluid port face, the centripetal end of cone valve protrusion cross axle's interior pore wall face and with the cylinder on the oil outlet wall sealing contact be connected. The utility model discloses in, in the hydro-cylinder assembling process, although also can there be moisture in the clearance between cross axle and the cylinder, nevertheless the assembly is accomplished the back, and the cone valve separates between clearance between cross axle and the cylinder oil-out, makes moisture can not enter into in the cylinder to effectively prevent the moisture in clearance between cross axle and the cylinder to enter into the cylinder and lead to cylinder cap and piston end face to carry out the corrosion.
In the internal thread oil cylinder, the cone valve is in interference fit with the wall of the inner hole of the cross shaft or is in threaded fit with the wall of the inner hole of the cross shaft.
In the internal thread oil cylinder, a sealing ring is arranged between the centripetal end of the cone valve and the oil outlet of the cylinder barrel. And the sealing ring is added, so that the sealing reliability can be further improved.
In the internal thread oil cylinder, the centripetal end of the cone valve is in sealing contact connection with the upper oil outlet hole wall surface line of the cylinder barrel. Furthermore, the end part of the centripetal end of the cone valve is provided with an outer chamfer, the centrifugal end of the oil outlet hole on the cylinder barrel is provided with an inner chamfer, and the inclined plane of the outer chamfer of the centripetal end of the cone valve is in line sealing contact with the inclined plane of the inner chamfer of the oil outlet hole on the cylinder barrel. Further, the chamfer of the outer chamfer is larger than the chamfer of the inner chamfer. The chamfer size of outer chamfer is 32.5 degrees, and the chamfer size of interior chamfer is 30 degrees.
In the internal thread oil cylinder, the centrifugal end of the oil outlet on the cylinder barrel is stepped, the centrifugal end is provided with two steps, and the inner chamfer is arranged at the adjacent position of the two steps.
In the internal thread oil cylinder, the centrifugal end of the cone valve is flush with the flange oil port surface of the cross shaft. After the pipeline is connected to the flange oil port surface of the cross shaft, the pipeline joint is in contact limit with the centrifugal end of the cone valve, and the cone valve is prevented from axially moving to cause sealing failure of the centripetal end line.
The utility model discloses in, the centrifugation end all is the axle center of relative cylinder with the end of entad, and the assembly is accomplished the back, and the axle center of awl valve is basically perpendicular with the axle center of cylinder, and the one end of awl valve is held for entad from the one end that the cylinder axle center is nearly, and the one end far away from the cylinder axle center is the centrifugation end. Similarly, the axis of the oil outlet hole arranged on the cylinder barrel is basically vertical to the axis of the cylinder barrel, the far end of the oil outlet hole, namely the end close to the outer surface of the cylinder barrel, is a centrifugal end, and the end close to the axis of the cylinder barrel is a centripetal end.
Compared with the prior art, the utility model discloses well cone valve separates between clearance and the cylinder oil-out between with cross axle and the cylinder, makes moisture in the clearance can not enter into the cylinder to effectively prevent the moisture in clearance between cross axle and the cylinder to enter into the cylinder and lead to cylinder cap and piston end face to rust.
Drawings
Fig. 1 is a cross-sectional view of the top of the internal thread cylinder of the present invention.
Fig. 2 is the structure schematic diagram of the cone valve in the internal thread oil cylinder of the utility model.
Fig. 3 is a cross-sectional view of the top of the cylinder barrel in the internal thread cylinder of the present invention.
Fig. 4 is a partial enlarged view at a in fig. 3.
Fig. 5 is a schematic structural view of a cross shaft in the internal thread oil cylinder of the present invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 1, the cylinder body of the internal thread oil cylinder comprises a cylinder barrel 2, a cylinder cover 1 and a cylinder base, wherein the cylinder base is fixed at the lower end (not shown) of the cylinder barrel 2. The top of cylinder 2 is provided with internal thread 21, and cylinder lid 1 is through internal thread 21 and cylinder 2 fixed connection, is provided with the hole that supplies plunger rod 5 to stretch out on the cylinder lid 2.
As shown in fig. 1 and 3, an oil outlet 22 is provided in a portion of the cylinder tube close to the cylinder head, and the cross shaft 3 is fitted over the cylinder tube 2. As shown in fig. 5, two ends of the cross shaft 3 are respectively provided with a shaft lug 31 for hinging the oil cylinder with the whole machine, the middle part is annular, and an inner hole of the cross shaft is in clearance fit with the outer surface of the cylinder barrel 2. Two ends of an inner hole of the cross shaft 3 are welded with the cylinder barrel 2 through fillet welds 35, a flange oil port surface 32 is arranged on the surface of the cross shaft, and a flange oil port 33 communicated with the cylinder barrel oil outlet 22 and a threaded hole 34 used for connecting and installing a pipeline joint are arranged on the flange oil port surface 32 of the cross shaft 3. A cone valve 4 is provided in the flange oil port 33.
As shown in fig. 2, the conical valve 4 is tubular and made of steel or copper or alloy, the lower end of the conical valve is a centripetal end, the upper end of the conical valve is a centrifugal end, the centripetal end is provided with an outer chamfer 41, the size of the outer chamfer 41 is 32.5 degrees, namely, the vertex angle of the conical surface where the inclined surface of the outer chamfer 41 is located is 65 degrees.
As shown in fig. 3 and 4, the centrifugal end of the oil outlet 22 on the cylinder 2 is stepped, and has two steps at the centrifugal end, the first step 23 has a diameter d2 and a height L1; the second step 24 has a diameter d1 and a height L2; the diameter of the oil outlet hole 22 is d, an inner chamfer 25 is arranged between the first step 23 and the second step 24 (namely, the top of the second step 24), and the size of the inner chamfer 25 is 30 degrees, namely, the cone vertex angle of the conical surface where the inclined surface of the inner chamfer is located is 60 degrees.
As shown in fig. 1, the cone valve 4 is fixedly installed in a flange oil port 33 on a flange oil port surface of the cross shaft 3, an outer cylindrical surface of the cone valve 4 is in interference fit with a wall surface of the flange oil port, the cone valve 4 is installed through a cold-assembling process, that is, the cone valve 4 is cooled, the cone valve 4 is installed in the flange oil port after the size of the cone valve is reduced, and a centripetal end of the cone valve 4 protrudes out of the wall surface of an inner hole of the cross shaft 3. The inclined surface of the outer chamfer 41 at the centripetal end of the cone valve 4 is contacted with the inclined surface of the inner chamfer 25 in the oil outlet hole 22 on the cylinder barrel 2 to form a line seal. In order to increase the sealing reliability, an O-shaped sealing ring 26 with the diameter of 1.8mm and the hardness of 70 degrees Shore hardness is arranged in a cavity of the cone valve and the oil outlet hole for secondary sealing. After the cone valve 4 is installed in place, the centrifugal end of the cone valve 4 is flush with the flange oil port surface 32 on the cross shaft 3, and if the centrifugal end is higher than the flange oil port surface 32 due to the accumulation of size chains, the problem is solved by milling a plane. In the manufacturing process, the wall thickness L of the cone valve 4 is controlled, the thickness can ensure that an O ring for static sealing of the oil port surface of the universal joint pin flange is just above an annular circle with the wall thickness, the cone valve is tightly pressed through four flange bolts, and the up-and-down movement is ensured in the working process.
The utility model discloses in, cone valve 4 and cross 3 are through interference fit installation, and when concrete implementation, cone valve 4 can also be through screw-thread fit and cross 3 erection joint.
Compared with the prior art, the utility model discloses well cone valve separates between clearance and the cylinder oil-out between with cross axle and the cylinder, makes moisture in the clearance can not enter into the cylinder to effectively prevent the moisture in clearance between cross axle and the cylinder to enter into the cylinder and lead to cylinder cap and piston end face to rust.
Claims (10)
1. The utility model provides an internal thread hydro-cylinder, the cylinder body of this hydro-cylinder includes cylinder and the cylinder cap through cylinder tip internal thread connection, and the position that is close to the cylinder cap on the cylinder is provided with the oil outlet, and the cover is equipped with the cross axle on the cylinder, cross axle hole both ends are passed through fillet weld and are welded with the cylinder, are provided with the communicating flange hydraulic fluid port with the cylinder oil-out on the flange hydraulic fluid port face of cross axle, its characterized in that still includes and is straight cylindric cone valve, the cone valve is fixed in the flange hydraulic fluid port on the flange hydraulic fluid port face, the centripetal end of cone valve protrusion cross axle's interior pore wall face and with the cylinder on the oil outlet wall sealing contact be connected.
2. The internally threaded cylinder of claim 1, wherein the cone valve is in interference fit with the bore wall of the cross-pin bore.
3. The internally threaded cylinder of claim 1, wherein the cone valve is in threaded engagement with the wall of the bore of the spider.
4. The internally threaded oil cylinder according to any one of claims 1 to 3, wherein a seal ring is arranged between the centripetal end of the cone valve and the oil outlet of the cylinder barrel.
5. The internally threaded oil cylinder according to any one of claims 1 to 3, wherein the centripetal end of the cone valve is in first sealing contact with the face line of the oil outlet wall of the cylinder barrel.
6. The internal thread oil cylinder according to claim 5, wherein the end of the centripetal end of the cone valve is provided with an external chamfer, the centrifugal end of the oil outlet hole on the cylinder barrel is provided with an internal chamfer, and the inclined surface of the external chamfer of the centripetal end of the cone valve is in line sealing contact connection with the inclined surface of the chamfer in the oil outlet hole on the cylinder barrel.
7. The internally threaded cylinder of claim 6, wherein the chamfer of the outer chamfer is greater than the chamfer of the inner chamfer.
8. The internally threaded cylinder of claim 7, wherein the chamfer of the outer chamfer is 32.5 degrees and the chamfer of the inner chamfer is 30 degrees.
9. The internally threaded cylinder as claimed in any one of claims 6 to 8, wherein the centrifugal end of the oil outlet on the cylinder barrel is stepped, having two steps, and the internal chamfer is provided at the abutment of the two steps.
10. The internally threaded cylinder of any one of claims 6 to 8, wherein the eccentric end of the cone valve is flush with the flange port face of the spider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921208668.XU CN210371441U (en) | 2019-07-30 | 2019-07-30 | Internal thread oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921208668.XU CN210371441U (en) | 2019-07-30 | 2019-07-30 | Internal thread oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371441U true CN210371441U (en) | 2020-04-21 |
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ID=70246130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921208668.XU Active CN210371441U (en) | 2019-07-30 | 2019-07-30 | Internal thread oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660032A (en) * | 2020-07-02 | 2020-09-15 | 常德市联嘉机械有限公司 | Reduce welding deformation's pneumatic cylinder |
-
2019
- 2019-07-30 CN CN201921208668.XU patent/CN210371441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660032A (en) * | 2020-07-02 | 2020-09-15 | 常德市联嘉机械有限公司 | Reduce welding deformation's pneumatic cylinder |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230310 Address after: 545000 No. 6, Yangtai Road, Yanghe industrial new area, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Zhongyuan Machinery Co.,Ltd. Patentee after: GUANGXI LIUGONG MACHINERY Co.,Ltd. Address before: 545006 No.1 Hexiang Road (Yanghe industrial new area), Yufeng District, Liuzhou City, Guangxi Zhuang Autonomous Region 545006 Patentee before: LIUZHOU LIUGONG HYDRAULIC COMPONENTS Co.,Ltd. Patentee before: GUANGXI LIUGONG MACHINERY Co.,Ltd. |