CN202398984U - Needle valve seat installation tool - Google Patents
Needle valve seat installation tool Download PDFInfo
- Publication number
- CN202398984U CN202398984U CN2011204885542U CN201120488554U CN202398984U CN 202398984 U CN202398984 U CN 202398984U CN 2011204885542 U CN2011204885542 U CN 2011204885542U CN 201120488554 U CN201120488554 U CN 201120488554U CN 202398984 U CN202398984 U CN 202398984U
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- CN
- China
- Prior art keywords
- valve body
- needle seating
- pilot sleeve
- screw
- pressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a needle valve seat installation tool, which can press a needle valve seat into a valve body and comprises a screw, a guide barrel, a bush, a compression screw, a fastening screw, a guiding sleeve, an ejector rod, a positioning block, a base, two side plates, two hexagonal socket cap screws, four cylindrical pins and two cylindrical head bolts. The needle valve seat is sleeved on the top of the ejector rod, and the valve body is clamped by a tool and placed into a space between the guiding sleeve and the guide barrel after being heated to the temperature of 400 DEG C. The compression screw is screwed by a torque wrench, and the needle valve seat is pressed into the valve body under load of about 1000 Newtons by the aid of mutual effects. By the aid of the needle valve seat installation tool, the needle valve seat can be fixed and self-positioned, and can be assuredly placed in the center of the valve body, the requirement that the needle valve seat is pressed into the valve body by 1000-Newtow force can be met by means of pressing the needle valve seat by the certain force, accordingly the needle valve seat installation tool can effectively replace currently applied hydraulic equipment which is heavy and is low in work efficiency.
Description
Technical field
The utility model relates to a kind of erecting tools of diesel injector inner valve body, particularly, relates to a kind of needle seating erecting tools that needle seating is pressed into valve body.
Background technology
Valve body in the diesel injector need be pressed into Φ 8.5H6 place in the valve body with needle seating with about 1000 newton's load when assembling; And needle seating cylindrical Φ 8.5 is an interference fit with valve body Φ 8.5H6, therefore need valve body be heated to about 400 ℃ insulation 4h; Valve body is expanded; Carry out hot jacket with about 1000 newton's load then, needle seating is pressed into, valve body and needle seating are as shown in Figure 1.Therefore, have following 2 situation should be noted that:
1. owing to need take the method for hot jacket when packing needle seating into valve body, so operating personnel can not directly catch and touch the valve body that is heated to about 400 ℃, and the instrument of needing is fixed;
2. because being pressed into the load of valve body, needle seating needs 1000 newton, thus need a cover hydraulic test, but hydraulic test commonly used on the market now is relatively heavier, and operating efficiency is lower, substitutes hydraulic test so we consider whether can design kit.
The utility model content
The purpose of the utility model provides a kind of erecting tools that needle seating is pressed into valve body that is used in the diesel injector, can substitute the lower hydraulic test of comparison heaviness and operating efficiency.
In order to achieve the above object; The utility model provides a kind of needle seating erecting tools; Needle seating is pressed into valve body, and the erecting tools of this needle seating comprises screw rod, guide, lining, housing screw, trip bolt, pilot sleeve, push rod, locating piece, pedestal, two blocks of side plates, two hexagon socket cap head screws, four straight pins and two hexagon-headed bolts; Described locating piece is installed on the pedestal through 2 hexagon socket cap head screws, and described locating piece central authorities are porose; Described push rod is installed in the hole of locating piece central authorities, and needle seating is nested with at described push rod top, and the push rod top is the conical surface, cooperates with the seat surface of needle seating; Described pilot sleeve is nested with in the locating piece outside, and this pilot sleeve lower surface is pressed on the base plane, the inner valve body of placing of pilot sleeve; Described two blocks of side plates are relatively inboard, and top is equipped with draw-in groove, and the bottom is installed in the both sides of pedestal before and after respectively through two hexagon socket cap head screws and four straight pins; Described housing screw comprises nut and bolt, and described bolt top is thick, be provided with external screw thread, and the bottom of bolt is provided with step surface; Described screw rod both sides cooperate with the draw-in groove on two side plate tops through external screw thread, and the central authorities of screw rod are provided with centre bore, and the internal thread through centre bore cooperates with the external screw thread on described housing screw top; Described trip bolt is nested with in the outside, housing screw bottom; Described lining bottom is provided with step surface; This lining is divided into two Houghs; Be placed between the trip bolt inboard and the outside, housing screw bottom, the large end face of lining is pressed on the step surface of described housing screw bottom, and described trip bolt bottom is pressed on the step surface of lining bottom; Described guide upper surface central authorities are provided with porose, and this guide is placed between described pilot sleeve and the valve body, and the tube inner face of guide is pressed on the small end face of valve body, and the guide bottom is pressed on the step surface of valve body lower portion; Described screw rod, lining, housing screw and trip bolt are placed in the medium pore of guide upper surface jointly, trip bolt and the hole screw-internal thread fit screw that is fixed and clamped.
Above-mentioned needle seating erecting tools, wherein, the cylindrical of described push rod and the endoporus of locating piece are interference fit, interference 0.03-0.05mm, the push rod cylindrical is according to the endoporus match grinding of locating piece.
Above-mentioned needle seating erecting tools, wherein, the inside of described pilot sleeve and the cylindrical of locating piece are interference fit, interference 0.01-0.02mm, the locating piece cylindrical is according to the endoporus match grinding of pilot sleeve.
Above-mentioned needle seating erecting tools, wherein, described valve body and guide and pilot sleeve are matched in clearance.
Above-mentioned needle seating erecting tools wherein, after described valve body is heated to 400 ℃, is put into the inside of pilot sleeve again with tool holding.
Above-mentioned needle seating erecting tools, wherein, described pilot sleeve both sides are provided with two relative grooves conveniently to put into and to take out valve body, and the side of pilot sleeve also is provided with aperture and is used for exitting.
After needle seating is pressed into valve body, unclamp housing screw in the other direction, screw rod is screwed out side plate, in two side channels of pilot sleeve, take out guide (need housing screw, screw rod etc. not taken out) from guide, take out the valve body that has been pressed into needle seating.
The needle seating erecting tools that the utility model provides has the following advantages:
This erecting tools has solved needle seating has been pressed into two difficult points in the installation process of valve body, i.e. the valve body about fixed heated to 400 ℃ how, and how to guarantee that the load that needle seating is pressed into valve body is 1000 newton.Can needle seating be fixed through this needle seating erecting tools; And can let it self-align; After putting into valve body, can guarantee needle seating, then with certain defeating tightly at the valve body center; Can reach defeat the requirement into valve body of needle seating, so the needle seating erecting tools that the utility model provides can be good at substituting comparison heaviness and the lower hydraulic test of using at present of operating efficiency with 1000 newton.
Description of drawings
Fig. 1 is valve body and needle seating sketch map.
Fig. 2 is the needle seating erecting tools sketch map of the utility model.
Fig. 3 is the needle seating erecting tools vertical view of the utility model.
Fig. 4 is the locating piece sketch map of the needle seating erecting tools of the utility model.
Fig. 5 is the side plate sketch map of the needle seating erecting tools of the utility model.
Fig. 6 is the housing screw sketch map of the needle seating erecting tools of the utility model.
Fig. 7 is the screw rod sketch map of the needle seating erecting tools of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done explanation further.
As shown in Figure 2; The needle seating erecting tools that the utility model provides; Needle seating 14 is pressed into valve body 15; The erecting tools of this needle seating comprises screw rod 1, guide 2, lining 3, housing screw 4, trip bolt 5, pilot sleeve 6, push rod 7, locating piece 8, pedestal 9, two blocks of side plates 10, two hexagon socket cap head screws 11, four straight pins 12 and two hexagon-headed bolts 13, referring to shown in Figure 3.Locating piece 8 is installed on the pedestal 9 through 2 hexagon socket cap head screws 11, and locating piece 8 central authorities are porose, referring to shown in Figure 4.Push rod 7 is installed in the hole of locating piece 8 central authorities, and needle seating 14 is nested with at push rod 7 tops, and push rod 7 tops are the conical surface, cooperate with the seat surface of needle seating 14.Pilot sleeve 6 is nested with in locating piece 8 outsides, and these pilot sleeve 6 lower surfaces are pressed on pedestal 9 planes, the pilot sleeve 6 inner valve bodies 15 of placing.Two blocks of side plates 10 are relatively inboard, and top is equipped with draw-in groove, and the bottom is installed in the both sides of pedestal 9 in front and back respectively through two hexagon socket cap head screws 11 and four straight pins 12, referring to shown in Figure 5.Housing screw 4 comprises nut and bolt, and bolt top is thick, be provided with external screw thread, and the bottom of bolt is provided with step surface, referring to shown in Figure 6.Screw rod 1 both sides cooperate with the draw-in groove on two side plate 10 tops through external screw thread, and the central authorities of screw rod 1 are provided with centre bore, and the internal thread through centre bore cooperates with the external screw thread on housing screw 4 tops, referring to shown in Figure 7.Trip bolt 5 is nested with in the outside, housing screw 4 bottoms.Lining 3 bottoms are provided with step surface; This lining 3 is divided into two Houghs; Be placed between trip bolt 5 inboards and the outside, housing screw 4 bottoms, the large end face of lining 3 is pressed on the step surface of housing screw 4 bottoms, and trip bolt 5 bottoms are pressed on the step surface of lining 3 bottoms.Guide 2 upper surface central authorities are provided with porose, and this guide 2 is placed between pilot sleeve 6 and the valve body 15, and the tube inner face of guide 2 is pressed on the small end face of valve body 15, and guide 2 bottoms are pressed on the step surface of valve body 15 bottoms.Screw rod 1, lining 3, housing screw 4 and trip bolt 5 are placed in the medium pore of guide 2 upper surfaces jointly, trip bolt 5 and the hole screw-internal thread fit screw 4 that is fixed and clamped.
The endoporus of the cylindrical of push rod 7 and locating piece 8 is an interference fit, interference 0.03-0.05mm, and push rod 7 cylindricals are according to the endoporus match grinding of locating piece 8.
The cylindrical of the inside of pilot sleeve 6 and locating piece 8 is an interference fit, interference 0.01-0.02mm, and locating piece 8 cylindricals are according to the endoporus match grinding of pilot sleeve 6.
Valve body 15 is a matched in clearance with guide 2 and pilot sleeve 6.After valve body is heated to 400 ℃, put into the inside of pilot sleeve again with tool holding.
After needle seating 14 is pressed into valve body 15; Unclamp housing screw 4 in the other direction; Screw rod 1 is screwed out side plate 10, in 6 liang of side channels of pilot sleeve, take out guide 2 (need housing screw 4, screw rod 1 etc. not taken out) from guide 2, take out the valve body 15 that has been pressed into needle seating 14.
The needle seating erecting tools operation principle that the utility model provides is described below.
The needle seating erecting tools that the utility model provides is installed at the scene and is described below when using.
1. preparation.
(1) locating piece 8 is installed on the pedestal 9, and is fixed with two hexagon socket cap head screws 11.
(2) push rod 7 cylindricals are according to locating piece endoporus match grinding, and interference 0.03-0.05mm is with push rod 7 locating piece 8 endoporus of packing into.
(3) locating piece 8 cylindricals are according to pilot sleeve 6 endoporus match grindings, and interference 0.01-0.02mm lives locating piece 8 with fairlead jacket casing 6, and pilot sleeve 6 lower planes are pressed on pedestal 9 planes.
(4) two blocks of side plates 10 are relatively inboard, and with two hexagon-headed bolts 13 and four straight pins 12 side 10 plates front and back are installed on the two ends of pedestal 9.
(5) elder generation is screwed onto screw rod 1 at the external screw thread place on housing screw 4 tops; Again trip bolt 5 is enclosed within the outside, housing screw 4 bottoms; The housing screw 4 of screw rod 1, trip bolt 5 will be installed then put into endoporus place, guide 2 upper end; The lining 3 that meanwhile will be slit into two Houghs is filled in the gap between housing screw 4 and the trip bolt 5, and lining 3 large end faces are pressed on housing screw 4 step surfaces, and trip bolt 5 be pressed in lining 3 bottoms step surface on.
(6) tighten trip bolt 5, housing screw 4 lower surfaces are pressed on guide 2 end faces, fix housing screw 4.
2. installation steps.
(1) needle seating 14 is enclosed within push rod 7 tops, makes 60 ° of conical surfaces of push rod 7 withstand 60 ° of seat surfaces of needle seating 14, clamp the valve body 15 that is heated to 400 ℃ with special fixture then and put into pilot sleeve 6 inside, make needle seating 14 be positioned at valve body 15 inside.
(2) making screw rod 1 avoid two end side panels 10, put guide 2 between valve body 15 and the pilot sleeve 6 gap, 2 inner faces of guide are pressed on the small end face of valve body 15, is matched in clearance between valve body 15 and guide 2 and the pilot sleeve 6 wherein.
(3) rotary screw 1; Make its two ends stick into two side plate 10 inside respectively, the draw-in groove of side plate 10 is withstood in the upper end of screw rod 1, uses moment of torsion to twist housing screw 4 as the torque spanner of 5-10N/m again; Be supported on the side plate 10 through screw rod 1; Utilize reaction force to make housing screw 4 pressed downward guides 2, make guide 2 lower surfaces withstand on down effect on valve body 15 step surfaces, and needle seating 14 is withstood in push rod 7 upper ends; Interact, make the load of needle seating 14 about 1000 newton be pushed down into the endoporus place on valve body 15 tops.
(4) needle seating 14 is pressed into valve body 15 after; Unclamp housing screw 4 in the other direction; Screw rod 1 is screwed out side plate 10, in 6 liang of side channels of pilot sleeve, take out guide 2 (need housing screw 4, screw rod 1 etc. not taken out) from guide 2, take out the valve body 15 that has been pressed into needle seating 14.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (6)
1. needle seating erecting tools; Needle seating (14) is pressed into valve body (15); It is characterized in that the erecting tools of this needle seating comprises screw rod (1), guide (2), lining (3), housing screw (4), trip bolt (5), pilot sleeve (6), push rod (7), locating piece (8), pedestal (9), two blocks of side plates (10), two hexagon socket cap head screws (11), four straight pins (12) and two hexagon-headed bolts (13);
Described locating piece (8) is installed on the pedestal (9) through 2 hexagon socket cap head screws (11), and described locating piece (8) central authorities are porose;
Described push rod (7) is installed in the hole of locating piece (8) central authorities, and needle seating (14) is nested with at described push rod (7) top, and push rod (7) top is the conical surface, cooperates with the seat surface of needle seating (14);
Described pilot sleeve (6) is nested with in locating piece (8) outside, and this pilot sleeve (6) lower surface is pressed on pedestal (9) plane, the inner valve body (15) of placing of pilot sleeve (6);
Described two blocks of side plates (10) are inboard, and top is equipped with draw-in groove relatively, and the bottom is installed in the both sides of pedestal (9) in front and back respectively through two hexagon socket cap head screws (11) and four straight pins (12);
Described housing screw (4) comprises nut and bolt, and described bolt top is thick, be provided with external screw thread, and the bottom of bolt is provided with step surface;
Described screw rod (1) both sides cooperate with the draw-in groove on two blocks of side plates (10) top through external screw thread, and the central authorities of screw rod (1) are provided with centre bore, and the internal thread through centre bore cooperates with the external screw thread on described housing screw (4) top;
Described trip bolt (5) is nested with in the outside, housing screw (4) bottom;
Described lining (3) bottom is provided with step surface; This lining (3) is divided into two Houghs; Be placed between trip bolt (5) inboard and the outside, housing screw (4) bottom; The large end face of lining (3) is pressed on the step surface of described housing screw (4) bottom, and described trip bolt (5) bottom is pressed on the step surface of lining (3) bottom;
Described guide (2) upper surface central authorities are provided with porose; This guide (2) is placed between described pilot sleeve (6) and the valve body (15); The tube inner face of guide (2) is pressed on the small end face of valve body (15), and guide (2) bottom is pressed on the step surface of valve body (15) bottom;
Described screw rod (1), lining (3), housing screw (4) and trip bolt (5) are placed in the medium pore of guide (2) upper surface jointly, trip bolt (5) and the hole screw-internal thread fit screw (4) that is fixed and clamped.
2. needle seating erecting tools as claimed in claim 1 is characterized in that, the endoporus of the cylindrical of described push rod (7) and locating piece (8) is an interference fit, interference 0.03-0.05mm, and push rod (7) cylindrical is according to the endoporus match grinding of locating piece (8).
3. needle seating erecting tools as claimed in claim 1; It is characterized in that; The cylindrical of the inside of described pilot sleeve (6) and locating piece (8) is an interference fit, interference 0.01-0.02mm, and locating piece (8) cylindrical is according to the endoporus match grinding of pilot sleeve (6).
4. needle seating erecting tools as claimed in claim 1 is characterized in that, described valve body (15) is a matched in clearance with guide (2) and pilot sleeve (6).
5. needle seating erecting tools as claimed in claim 1 is characterized in that, described valve body (15) is heated to the inside of putting into pilot sleeve (6) after 400 ℃ again.
6. needle seating erecting tools as claimed in claim 1 is characterized in that, described pilot sleeve (6) both sides are provided with two relative grooves conveniently to put into and to take out valve body (15), and the side of pilot sleeve (6) also is provided with aperture and is used for exitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204885542U CN202398984U (en) | 2011-11-30 | 2011-11-30 | Needle valve seat installation tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204885542U CN202398984U (en) | 2011-11-30 | 2011-11-30 | Needle valve seat installation tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202398984U true CN202398984U (en) | 2012-08-29 |
Family
ID=46696660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204885542U Expired - Lifetime CN202398984U (en) | 2011-11-30 | 2011-11-30 | Needle valve seat installation tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202398984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104476104A (en) * | 2014-11-17 | 2015-04-01 | 南通龙源电站阀门有限公司 | Ball valve seat heat sleeve connecting process |
-
2011
- 2011-11-30 CN CN2011204885542U patent/CN202398984U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104476104A (en) * | 2014-11-17 | 2015-04-01 | 南通龙源电站阀门有限公司 | Ball valve seat heat sleeve connecting process |
| CN104476104B (en) * | 2014-11-17 | 2017-01-04 | 南通龙源电站阀门有限公司 | A kind of ball seat hot jacket connects technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |
|
| CX01 | Expiry of patent term |