CN220036881U - Floating press-fitting structure of oil piston and cross head - Google Patents
Floating press-fitting structure of oil piston and cross head Download PDFInfo
- Publication number
- CN220036881U CN220036881U CN202320863200.4U CN202320863200U CN220036881U CN 220036881 U CN220036881 U CN 220036881U CN 202320863200 U CN202320863200 U CN 202320863200U CN 220036881 U CN220036881 U CN 220036881U
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- Prior art keywords
- cross head
- oil piston
- compression
- flange
- pressure equipment
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- 230000006835 compression Effects 0.000 claims abstract description 48
- 238000007906 compression Methods 0.000 claims abstract description 48
- 210000004907 gland Anatomy 0.000 claims abstract description 11
- 229910001149 41xx steel Inorganic materials 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012856 packing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000000670 limiting effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a floating pressure equipment structure of oil piston and cross head, includes oil piston and cross head, the bottom of oil piston is equipped with the pressure equipment flange, and the top of cross head is equipped with the recess, and the pressure equipment flange is placed in the recess, evenly installs a plurality of clamp screw at the peripheral cross head top of recess, and the movable cover in clamp screw middle part is equipped with the clamp block, and clamp screw top threaded connection has gland nut, and the clamp block is used for restricting the pressure equipment flange in the recess. The compression blocks on each compression screw can be independently adjusted, even if the compression blocks are locally deformed, the compression blocks cannot affect the whole compression screw, so that each compression block has a floating adjustment effect, the compression flange is better limited, the phenomenon that the oil piston is loose is avoided, and the operation precision of the oil piston is guaranteed. Through compressing tightly packing ring and pressure equipment flange direct contact, the planarization of compressing tightly the packing ring can obtain better assurance, with the cooperation precision height of pressure equipment flange to the installation accuracy of oil piston has been guaranteed.
Description
Technical field:
the utility model relates to a floating press-fitting structure of an oil piston and a cross head.
The background technology is as follows:
in the diaphragm compressor, a cross head in an intermediate body is an important component for connecting an oil piston and a connecting rod, one end of the oil piston is connected with the cross head, and the other end of the oil piston needs to reciprocate in a cylinder body. At present, when oil piston and cross head are connected, generally all open a groove in cross head top, then compress tightly fixedly to the flange of oil piston bottom through the clamping ring, because the clamping ring is monolithic structure, when receiving oil piston's axial force for a long time, its part takes place to warp and then can lead to wholly taking place deformation, leads to oil piston to appear not hard up condition, influences oil piston's operation precision. In addition, the oil piston has high requirement on the contact flatness between the oil piston and the cross head, and the required flatness is difficult to achieve only by means of grooving at the top of the cross head, so that the installation accuracy of the oil piston is also affected.
In summary, the problem of installing the oil piston and the crosshead in the diaphragm compressor has become a technical problem to be solved in the industry.
The utility model comprises the following steps:
the utility model provides a floating press-fitting structure of an oil piston and a cross head, which aims to overcome the defects in the prior art, and solves the problems that the oil piston is loosened and the oil operation precision is affected due to the fact that the integral compression ring is deformed locally in the past.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a floating press-fit structure of oil piston and cross head, includes oil piston and cross head, the bottom of oil piston is equipped with the press-fit flange, and the top of cross head is equipped with the recess, and the press-fit flange is placed in the recess, evenly installs a plurality of clamp screw at the peripheral cross head top of recess, and the movable cover in clamp screw middle part is equipped with the clamp block, and clamp screw top threaded connection has gland nut, and the clamp block is used for restricting the press-fit flange in the recess, is clearance fit between clamp block and the press-fit flange.
And a compression washer is arranged between the press-fit flange and the bottom of the groove.
The center of the pressing washer is provided with a threaded hole.
The compression washer is made of 35 CrMo.
The upper surface of the press-fit flange is slightly lower than the top of the groove.
The middle part of the compression screw is a polished rod, the compression block is sleeved at the polished rod position, external threads are arranged at two ends of the compression screw, the bottom is in threaded connection with the cross head, and the top is in threaded connection with the compression nut.
The number of the compression screws is four, and the compression screws are uniformly arranged on the outer side of the groove along the circumference.
The utility model adopts the scheme and has the following advantages:
through evenly installing a plurality of hold-down screw at recess outlying cross top, drive the gland block through screwing up gland nut on the hold-down screw and restrict the pressure equipment flange in the recess, be clearance fit between gland block and the pressure equipment flange, reserve certain activity surplus for the pressure equipment flange, but replaced integral clamping ring structure in the past, but the gland block on every gland screw independently adjusts, even local deformation also can not cause the influence to the whole, make every gland block have the effect of floating adjustment, be favorable to restricting the pressure equipment flange better, avoid the oil piston to appear not hard up condition, guaranteed the running accuracy of oil piston.
Through being equipped with the packing washer that compresses tightly between pressure equipment flange and recess bottom, through packing washer and pressure equipment flange direct contact, the planarization of packing washer can obtain better assurance, with the cooperation precision height of pressure equipment flange to the installation accuracy of oil piston has been guaranteed.
Description of the drawings:
fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic cross-sectional view of the present utility model.
In the figure, 1, a cross head, 2, an oil piston, 3, a press-fit flange, 4, a compression screw, 5, a compression block, 6, a compression nut, 7, a compression washer, 8 and a threaded hole.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-2, a floating press-fitting structure of an oil piston and a cross head comprises the oil piston 2 and the cross head 1, wherein a press-fitting flange 3 is arranged at the bottom of the oil piston 2, a groove is formed in the top of the cross head 1, the press-fitting flange 3 is placed in the groove, a plurality of press-fit screws 4 are uniformly arranged at the top of the cross head 1 on the periphery of the groove, a press block 5 is movably sleeved in the middle of each press-fit screw 4, press nuts 6 are connected with the tops of the press-fit screws 4 in a threaded manner, the press-fit blocks 5 are used for limiting the press-fitting flange 3 in the groove, and a certain movable allowance is reserved between the press-fit blocks 5 and the press-fitting flange 3.
The pressing washer 7 is arranged between the pressing flange 3 and the bottom of the groove, the pressing washer 7 is in direct contact with the pressing flange 3, the flatness of the pressing washer 7 can be better guaranteed, and the matching precision with the pressing flange 3 is high, so that the installation precision of the oil piston is guaranteed.
The center of the pressing washer 7 is provided with a threaded hole 8, so that the pressing washer 7 can be conveniently taken out and installed through a tool.
The compression washer 7 is made of 35CrMo, and has the advantages of bearing larger impact, bending and torsion resistance, high load and the like.
The upper surface of the press-fitting flange 3 is slightly lower than the top of the groove, so that a gap of 2-5 wires is formed conveniently.
The middle part of compression screw 4 is the polished rod, and compression block 5 movable sleeve is established in the polished rod position, and compression screw 4's both ends are equipped with the external screw thread, bottom and cross 1 threaded connection, top and gland nut 6 threaded connection, when screwing down gland nut 6, can drive compression block 5 and move down and restrict pressure equipment flange 3 in the recess.
The number of the compression screws 4 is four, the compression screws are uniformly arranged on the outer side of the groove along the circumference, the limitation of the design on the press-fit flange 3 is more balanced, and each compression block 5 can be independently adjusted to prevent the influence on the whole limiting effect due to local deformation.
Working principle:
during installation, the compression washer 7 is placed in the groove at the top of the cross head 1, then the press-fit flange 3 at the bottom of the oil piston 2 is placed in the groove, the press-fit flange 3 is in direct contact with the compression washer 7, the compression screw 4 is in threaded connection with the cross head 1, the compression block 5 is sleeved at the polish rod position in the middle of the compression screw 4, finally the compression nut 6 is in threaded connection with the compression screw 4, and when the compression nut 6 is screwed down, the compression block 5 can be driven to move down to limit the press-fit flange 3 in the groove, so that the oil piston 2 is fixedly connected with the cross head 1.
The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (7)
1. The utility model provides a floating pressure equipment structure of oil piston and cross head, includes oil piston and cross head, its characterized in that: the bottom of oil piston is equipped with the pressure equipment flange, and the top of cross head is equipped with the recess, and the pressure equipment flange is placed in the recess, evenly installs a plurality of compression screw at recess outlying cross head top, and the movable cover in the middle part of the compression screw is equipped with the clamp block, and compression screw top threaded connection has gland nut, and the clamp block is used for restricting the pressure equipment flange in the recess, is clearance fit between clamp block and the pressure equipment flange.
2. The floating press-fitting structure of an oil piston and a cross head according to claim 1, wherein: and a compression washer is arranged between the press-fit flange and the bottom of the groove.
3. The floating press-fitting structure of an oil piston and a cross head according to claim 2, characterized in that: the center of the pressing washer is provided with a threaded hole.
4. The floating press-fitting structure of an oil piston and a cross head according to claim 2, characterized in that: the compression washer is made of 35 CrMo.
5. The floating press-fitting structure of an oil piston and a cross head according to claim 1, wherein: the upper surface of the press-fit flange is slightly lower than the top of the groove.
6. The floating press-fitting structure of an oil piston and a cross head according to claim 1, wherein: the middle part of the compression screw is a polished rod, the compression block is sleeved at the polished rod position, external threads are arranged at two ends of the compression screw, the bottom is in threaded connection with the cross head, and the top is in threaded connection with the compression nut.
7. The floating press-fitting structure of an oil piston and a cross head according to claim 1, wherein: the number of the compression screws is four, and the compression screws are uniformly arranged on the outer side of the groove along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320863200.4U CN220036881U (en) | 2023-04-13 | 2023-04-13 | Floating press-fitting structure of oil piston and cross head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320863200.4U CN220036881U (en) | 2023-04-13 | 2023-04-13 | Floating press-fitting structure of oil piston and cross head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220036881U true CN220036881U (en) | 2023-11-17 |
Family
ID=88725110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320863200.4U Active CN220036881U (en) | 2023-04-13 | 2023-04-13 | Floating press-fitting structure of oil piston and cross head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220036881U (en) |
-
2023
- 2023-04-13 CN CN202320863200.4U patent/CN220036881U/en active Active
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