CN214055092U - Installation tool for plunger combined O-shaped sealing ring of high-pressure oil pump - Google Patents
Installation tool for plunger combined O-shaped sealing ring of high-pressure oil pump Download PDFInfo
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- CN214055092U CN214055092U CN202022485590.5U CN202022485590U CN214055092U CN 214055092 U CN214055092 U CN 214055092U CN 202022485590 U CN202022485590 U CN 202022485590U CN 214055092 U CN214055092 U CN 214055092U
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- outer sleeve
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- pressure oil
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Abstract
The utility model discloses a high-pressure oil pump plunger combination formula O shape sealing washer installation frock, including outer sleeve, interior toper cover, cushion and bolt, the bobbin base center of outer sleeve one end is equipped with the through-hole that the bolt passed, outer sleeve counter bore and interior toper cover one end excircle clearance fit in the other end, and the outer sleeve other end radially inwards extends round annular presser foot, the elastic groove that outer sleeve outer peripheral face axial equipartition number one end and annular presser foot link up. The inner hole of the cylindrical body of the inner conical sleeve is in clearance fit with one end of the plunger, the cushion block is embedded into the bottom of the inner hole of the cylindrical body, and the end head of one end of the plunger extending into the inner hole of the cylindrical body is abutted against the cushion block. The utility model discloses make the good combination formula O shape sealing washer of installation intact harmless, improved the reliability of high-pressure oil pump work.
Description
Technical Field
The utility model relates to a hydraulic transmission's combination formula O shape sealing washer installation frock, in particular to installs combination formula O shape sealing washer specialized tool on high-pressure oil pump plunger belongs to hydraulic transmission assembly technical field.
Background
At present, a high-pressure oil pump of a diesel engine mostly adopts a plunger type structure, and a plunger (hereinafter referred to as a plunger) of the high-pressure oil pump and a combined O-shaped sealing ring on the plunger are frequently required to be replaced in actual use. The damaged combined O-shaped sealing ring is very easy to remove, and the combined O-shaped sealing ring can be smoothly removed only by cutting off. When the combined O-shaped sealing ring is installed, the combined O-shaped sealing ring and the plunger body are very easy to damage through a sharp cutting edge at the head of the plunger; even if the combined O-shaped sealing ring is reluctantly installed in the sealing ring installation groove in the middle of the plunger, the combined O-shaped sealing ring is easy to distort and deform, so that the sealing effect is poor, high pressure is difficult to build, and oil leakage occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, simple to operate's combination formula O shape sealing washer plunger combination formula O shape sealing washer installation frock ensures that combination formula O shape sealing washer does not have the damage and puts into in the sealing washer mounting groove at plunger middle part.
The utility model discloses a following technical scheme realizes:
a high-pressure oil pump plunger combined type O-shaped sealing ring installation tool comprises an outer sleeve, an inner conical sleeve, a cushion block and a bolt, wherein a through hole through which the bolt penetrates is formed in the center of the bottom of the outer sleeve at one end, an outer sleeve counter bore in the other end of the outer sleeve is in clearance fit with an outer circle at one end of the inner conical sleeve, a circle of annular presser foot extends from the other end of the outer sleeve radially inwards, and a plurality of elastic grooves with one ends communicated with the annular presser foot are axially and uniformly distributed on; interior toper cover one end is the frustum head, and the interior toper cover other end is the barrel-shaped body, barrel-shaped body hole and plunger one end clearance fit, and frustum head center is equipped with the screw hole that bolt other end was twisted, and the cushion embedding the bottom of barrel-shaped body hole, the plunger one end that stretches into the barrel-shaped body hole supports and leans on the cushion.
The object of the invention is further achieved by the following technical measures.
Furthermore, the other end of the outer sleeve is provided with a radial annular groove, and a fastening O-shaped sealing ring is embedded into the radial annular groove.
Furthermore, the outer diameter of the cushion block is matched with the inner hole of the cylindrical body, one end of the cushion block is provided with a bolt end positioning counter bore matched with the end of the bolt, and the other end of the cushion block is provided with a plunger end positioning counter bore matched with the end of one end of the plunger.
Further, the width A =2.5 ~ 3.5mm of annular presser foot.
Further, the taper angle of the frustum head includes a top taper angle 2 α connected to each other1And a transition taper angle 2 alpha2，2α1=13.5°～14.5°，2α2=3.5°～4.5°。
The utility model discloses when interior toper cover stretched into the outer sleeve, the inner circle or the outer lane of the overhead combination formula O shape sealing washer of frustum of interior toper cover of promotion cover moved outward along the outer peripheral face of interior toper cover gradually through the annular presser foot of the round of the outer sleeve other end, accomplished the installation of the corresponding inner circle or the outer lane of combination formula O shape sealing washer until falling into in the plunger middle part sealing washer groove. The combined O-shaped sealing ring has the advantages of simple structure, low manufacturing cost, intact inner ring or outer ring of the assembled combined O-shaped sealing ring, no leakage of hydraulic oil during normal operation of the high-pressure oil pump, and improved reliability of operation of the high-pressure oil pump.
The advantages and features of the invention will be illustrated and explained by the following non-restrictive description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the inner ring of the combined O-ring initially installed in use;
FIG. 2 is a schematic view of the inner ring of the unitized O-ring having been installed into a plunger seal groove;
FIG. 3 is a schematic view of the installation of the outer ring of the composite O-ring of the present invention;
fig. 4 is a schematic structural view for completing the installation of the combined O-ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the embodiment in which the inner ring 301 and the outer ring 302 of the combined O-ring 30 are sequentially inserted into the middle seal groove 101 of the plunger.
As shown in fig. 1 and 2, the plunger combined O-shaped seal ring installation tool of the embodiment includes an outer sleeve 1, an inner conical sleeve 2, a cushion block 3 and a bolt 4, a through hole 11 through which an end of one end of the bolt 4 passes is formed in the center of the bottom of one end of the outer sleeve 1, an outer sleeve counter bore 12 in the other end of the outer sleeve 1 is in clearance fit with an outer circle of one end of the inner conical sleeve 2, a circle of annular presser foot 13 extends radially inwards from the other end of the outer sleeve 1, and 6 elastic grooves 14 with one end communicated with the annular presser foot 13 are axially and uniformly distributed on the outer peripheral surface of the outer sleeve 1. The other end of the outer sleeve is provided with a radial annular groove 15, and a fastening O-shaped sealing ring 20 is embedded in the radial annular groove 15.
One end of the inner conical sleeve 2 is a frustum head 21, the other end of the inner conical sleeve 2 is a cylindrical body 22, an inner hole 221 of the cylindrical body is in clearance fit with one end of the plunger 10, and a threaded hole 211 into which the end head of the other end of the bolt 4 is screwed is formed in the center of the frustum head 21. When the frustum head 21 at one end of the inner conical sleeve 2 extends into the annular presser foot central hole 131 at the other end of the outer sleeve, the 6 elastic grooves 14 of the outer sleeve 1 can restore the other end of the outer sleeve 1 after opening, and the fastening O-ring 20 provides extra tightening force for restoring the outer sleeve 1.
The cushion block 3 is embedded into the bottom of the cylindrical inner hole 221, the outer diameter of the cushion block 3 is matched with the cylindrical inner hole 221, one end of the cushion block 3 is provided with a bolt end positioning counter bore 31 matched with the end of the bolt 4, the other end of the cushion block is provided with a plunger end positioning counter bore 32 matched with the end of one end of the plunger 10, and the end of one end of the plunger 10 extending into the cylindrical inner hole 221 abuts against the plunger end positioning counter bore 32 of the cushion block 3.
The inner ring 301 or the outer ring 302 of the combined O-ring 30 is sleeved on the frustum head 21, the width a =3.0mm of the annular presser foot 13 of the embodiment, and the taper angle of the frustum head 21 includes the top taper angle 2 α connected with each other1And a transition taper angle 2 alpha 22 α of the present embodiment1=14.0°，2α2And 4.0 degrees, the structure is convenient for the annular pressure foot 13 to push the inner ring 301 or the outer ring 302 of the sealing ring 30 to move along the cylindrical body 22 at the other end of the inner conical sleeve 2 and be guided into the middle sealing ring groove 101 of the plunger.
The installation process of the plunger combined type O-shaped sealing ring is as follows:
1) firstly, screwing one end of the bolt 4 into a threaded hole 211 in the center of a frustum head 21 at one end of the inner conical sleeve 2, extending one end of the bolt 4 out of the threaded hole 211, then, installing the cushion block 3 into a cylindrical inner hole 221 at the other end of the inner conical sleeve 2 until one end of the bolt 4 extends into a bolt end center counter bore 31 at one end of the cushion block 3. And then one end of the plunger 10 is inserted into the cylindrical inner hole 221 at the other end of the inner conical sleeve 2 until the end head of one end of the plunger 10 extends into the plunger end positioning counter bore 32 at the center of the other end of the cushion block 3. And then, the fastening O-shaped sealing ring 20 is embedded into the radial annular groove 15 at the other end of the outer sleeve 1, and the primary assembly of the installation tool is completed. Then the inner ring 301 of the combined O-ring 30 is sleeved on the frustum head 21 at one end of the inner conical sleeve 2.
2) One end of the bolt 4 which is preliminarily assembled with the mounting tool firstly passes through the central hole 131 of the annular presser foot at the other end of the outer sleeve 1 and then passes through the through hole 11 at one end of the outer sleeve 1. The operator then pushes the plunger 10 with one hand and the outer sleeve 1 with the other hand, and pushes the inner tapered sleeve 2 toward the bottom of the outer sleeve counterbore 12 via the spacer 3. When the frustum head 21 at one end of the inner conical sleeve 2 extends into the annular presser foot central hole 131 at the other end of the outer sleeve 1, the annular presser foot 13 reversely pushes the inner ring 301 of the combined O-ring 30 to move along the frustum head 21 toward the cylindrical body 22 at the other end of the inner conical sleeve 2, and at the same time, the lower end of the cylindrical body 22 is opened outwards against the elasticity of the fastening O-ring 20. When the frustum head 21 at one end of the inner conical sleeve 2 completely enters the counterbore 12 of the outer sleeve at the other end of the outer sleeve 1, the annular presser foot 13 pushes the inner ring 301 to move to the cylindrical body 22 at the other end of the inner conical sleeve 2, and the inner ring 301 continues to move towards the cylindrical body 22 of the inner conical sleeve 2. When one end of the bolt 4 extends out of the through hole 11 at one end of the outer sleeve 1, the bolt 4 can be pulled, so that the inner conical sleeve 2 continues to move towards the bottom of the counterbore 12 of the outer sleeve until the inner ring 301 is separated from the port of the cylindrical body 22 and moves into the middle sealing ring groove 101 of the plunger. And finally, pulling out the plunger 10 and reversely pulling out the outer sleeve 1 to separate the bolt 4, the inner conical sleeve 2 and the cushion block 3 from the outer sleeve 1, thereby completing the installation of the inner ring 301 of the combined O-shaped sealing ring 30.
3) As shown in fig. 3 and 4, after the outer ring 302 of the O-ring 30 is fitted over the frustum head 21 at one end of the inner cone 2, the process of step 2) is repeated, so that the outer ring 302 moves into the middle seal groove 101 of the plunger outside the inner ring 301, thereby completing the installation of the O-ring 30.
As shown in fig. 4, when the end face of the frustum head 21 at one end of the inner conical sleeve 2 abuts against the bottom of the counterbore 12 of the outer sleeve, and one end of the plunger 30 abuts against the bottom of the cylindrical inner hole 221 of the inner conical sleeve 2 through the spacer 3, the distance B =1.0mm between the end face of the annular presser foot 13 and the annular face of the middle seal ring groove 301 of the adjacent plunger, so that the inner ring 301 or the outer ring 302 falls into the middle seal ring groove 301 of the plunger after being separated from the cylindrical body 22 at the other end of the inner conical sleeve 2, and the inner ring 301 or the outer ring 302 is ensured to be mounted in the combined O-shaped seal ring mounting groove 101 in the middle of the plunger without damage.
In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (5)
1. The installation tool for the combined O-shaped sealing ring of the plunger of the high-pressure oil pump is characterized by comprising an outer sleeve, an inner conical sleeve, a cushion block and a bolt, wherein a through hole through which the bolt penetrates is formed in the center of the bottom of the outer sleeve at one end of the outer sleeve; interior toper cover one end is the frustum head, and the interior toper cover other end is the barrel-shaped body, barrel-shaped body hole and high-pressure oil pump plunger one end clearance fit, and frustum head center is equipped with the screw hole that the bolt other end was twisted, and the cushion embedding the bottom of barrel-shaped body hole, the high-pressure oil pump plunger one end that stretches into the barrel-shaped body hole supports and leans on the cushion.
2. The tooling for installing the O-ring of the high pressure oil pump plunger combination of claim 1 wherein the other end of the outer sleeve has a radial groove into which the fastening O-ring is inserted.
3. The high-pressure oil pump plunger combined type O-shaped sealing ring installation tool is characterized in that the width A = 2.5-3.5 mm of the annular pressure foot.
4. The tooling for installing the O-ring of the high pressure oil pump plunger combination of claim 1, wherein the center of one end of the cushion block is provided with a positioning counter bore of the bolt end, and the center of the other end of the cushion block is provided with a positioning counter bore of the plunger end.
5. The high-pressure oil pump plunger combined type O-shaped sealing ring installation tool as claimed in claim 1, wherein the taper angle of the frustum head comprises a top end taper angle 2 alpha connected with each other1And a transition taper angle 2 alpha2，2α1=13.5°～14.5°，2α2=3.5°～4.5°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485590.5U CN214055092U (en) | 2020-11-02 | 2020-11-02 | Installation tool for plunger combined O-shaped sealing ring of high-pressure oil pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485590.5U CN214055092U (en) | 2020-11-02 | 2020-11-02 | Installation tool for plunger combined O-shaped sealing ring of high-pressure oil pump |
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| CN214055092U true CN214055092U (en) | 2021-08-27 |
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| CN202022485590.5U Active CN214055092U (en) | 2020-11-02 | 2020-11-02 | Installation tool for plunger combined O-shaped sealing ring of high-pressure oil pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192499A (en) * | 2020-11-02 | 2021-01-08 | 中船动力有限公司 | Installation tool and installation method for high-pressure oil pump plunger combined type O-shaped sealing ring |
-
2020
- 2020-11-02 CN CN202022485590.5U patent/CN214055092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192499A (en) * | 2020-11-02 | 2021-01-08 | 中船动力有限公司 | Installation tool and installation method for high-pressure oil pump plunger combined type O-shaped sealing ring |
| CN112192499B (en) * | 2020-11-02 | 2024-04-05 | 中船动力有限公司 | Mounting tool and mounting method for high-pressure oil pump plunger combined O-shaped sealing ring |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province, 212002 Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |
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| CP03 | Change of name, title or address |