CN101549486B - Piston rod mounting tool - Google Patents
Piston rod mounting tool Download PDFInfo
- Publication number
- CN101549486B CN101549486B CN2008100888050A CN200810088805A CN101549486B CN 101549486 B CN101549486 B CN 101549486B CN 2008100888050 A CN2008100888050 A CN 2008100888050A CN 200810088805 A CN200810088805 A CN 200810088805A CN 101549486 B CN101549486 B CN 101549486B
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- CN
- China
- Prior art keywords
- piston rod
- thread part
- external thread
- tool body
- plectane
- 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 - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention provides a piston rod mounting tool which can realize thread joint between an outside thread part at one end of a piston rod and a screw hole of an ear ring component. The mounting tool comprises a tool main body and an operating rod for rotatably operating the tool main body. The tool main body is provided with a hole part in thread joint with an outside thread part at the other endof the piston rod, and a round plate which can be rotatably supported on the bottom surface of the hole part with an assistance of a ball bearing. In the case of thread joint between the outside thre ad part at the other end of the piston rod and the hole part, the round plate is butted with an end face of the piston rod in the axial direction. When the piston rod is fixed on the ear ring component, due to the surface pressure between the round plate and the piston rod, the torque is transferred from the tool main body towards the piston rod. On the other hand, if the operating rod is rotated reversely, the surface pressure decreases, and the round plate rotatably supported by the tool main body causes the piston rod to rotate relative to the tool main body, therefore, the tool can be easily dismounted from the piston rod.
Description
Technical field
The present invention relates to that a kind of end that is used to make piston rod is threadedly engaged with the coupling member of earrings member etc. and the erecting tools that is connected.
Background technology
The USPat.5 of distribution in USPO on April 7th, 1998 discloses a kind of piston rod of damper and earrings member on the cylinder of being fixed in 735,373.
For example, be threadedly engaged with, carry out piston rod fixing to such earrings member by making external thread part that is formed at piston rod one end and the screw that is formed on the earrings member.When assembling, with bench vice etc. the earrings member is kept so that screw mode up is fixing, the external thread part of piston rod is inserted into the screw of earrings member from the top, the rotating piston bar screws in screw with external thread part, and applies the installation that moment of torsion carries out piston rod and earrings member.
In order to carry out this operation, need control piston rod with the such instrument of spanner and go forward side by side and exercise the operation that piston rod rotates.In order to carry out aforesaid operations, for example, the part of machining piston rod outer peripheral face is provided with the handle part that is made of parallel pair of planar portion on piston rod.When piston rod being fixed on the earrings member, the external thread part of piston rod and the screw of earrings member are threadedly engaged with, control the handle part of piston rod and rotate with spanner.External thread part is along with the torque of the action bars of importing by handle part is connected to screw with piston rod.
But there are the following problems for this assemble method.
In the assembling of damper, after the screw of external thread part that makes piston rod and earrings member is threadedly engaged with, cylinder cap, guide block, piston etc. are installed on piston rod.Wherein cylinder cap, guide block constitute and can be free to slide with respect to piston, and therefore, these members that are installed on the piston rod can fall along the periphery of piston rod.
The cross sectional shape of the handle part of the piston rod that is made of parallel pair of planar portion is different with the cross sectional shape at other position of piston rod, is formed with step in its interface.On the other hand, be equipped with on cylinder cap and seal classes such as the contacted dust ring of piston rod outer peripheral face, oil sealing, the seal class may contact generation with this step owing to cylinder cap falls and damage.
If by catch the liner of cylinder cap in the upper surface setting of earrings member, make cylinder cap not drop to the position that forms handle part, then can prevent by step damage dust ring.But, need to prepare special-purpose liner for this reason, also need to be provided with and to remove the such flow chart of liner.
On the other hand, when using damper,, arrive handle part to prevent dust ring also because same reason has to limit the flexible scope of piston rod with respect to cylinder.Therefore, though with handle part be arranged at the earrings member near, the effective travel of piston rod also shortens the amount of the axial length be equivalent to handle part to I haven't seen you for ages.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of instrument that need not can carry out piston rod is fixed in the operation on the coupling member at formation handle part on the piston rod especially.
In order to reach above purpose, the present invention makes a kind of erecting tools, this erecting tools is threadedly engaged with by an end external thread part that makes the piston rod that is formed with external thread part at two ends and the screw that is formed on the coupling member, piston rod is fixed on the coupling member, this erecting tools comprises tool body and is used for the member of rotating operation tool body, this tool body has hole portion and plectane, and this hole portion has internal thread part and the bottom surface that the other end external thread part with piston rod is threadedly engaged with; This plectane can be rotated to support on by ball bearing on the bottom surface of hole portion, under the state that the internal thread part of other end external thread part and hole portion has carried out being threadedly engaged with, this plectane from axially and the end face of piston rod connect.
Detailed content of the present invention and other features, advantage illustrate in the later record of specification, and shown in the drawings.
Description of drawings
Fig. 1 is the piston rod of application erecting tools of the present invention and the side view of earrings member.
Fig. 2 A, 2B are the longitudinal section and the sectional elevation of erecting tools main body.
The specific embodiment
With reference to Fig. 1 of accompanying drawing, the piston rod 1 that damper is used has external thread part 1A and 1B at two ends.One end external thread part 1A of piston rod 1 and the internal thread part of screw 2A are threadedly engaged with, and this screw 2A is formed on the earrings member 2 as coupling member.In earrings member 2, be through with axle 7.Axle 7 is fixed on the side as two members of the mounting object of damper.
Fig. 1 represents the situation in the assembling process of double-tube type damper.Damper is assembled by cylinder cap 3, guide block 4, piston 5 are installed on the piston rod 1 that is fixed in up on the earrings member 2 successively.By the nut 6 on the other end external thread part 1B of piston rod 1, screwed on piston 5 is fixed on the piston rod 1.Though figure does not show that damper has outer tube and erects the interior pipe that is arranged in the outer tube coaxially.After having fixed piston 5, the openend of outer tube is fixed on the cylinder cap 3, and the openend of interior pipe is fixed on the guide block.In being inserted into, piston 5 also can in interior pipe, be free to slide in the pipe.Cylinder cap 3 has the dust ring 20 with piston rod 1 sliding-contact.
When the assembling damper, at first need piston rod 1 is fixed on the earrings member 2.In particular to following connection operation: use bench vice etc. that earrings member 2 is kept so that screw 2A state up is fixing, the external thread part 1A of piston rod 1 is threadedly engaged with from top and screw 2A, and piston rod 1 is applied moment of torsion.
This operation uses the erecting tools of the present invention shown in Fig. 2 A and the 2B to carry out.
With reference to Fig. 2 A and 2B, the tool body 10 of erecting tools is a cylindrical member, and the one end has the 10A of hole portion, and the other end has embedded hole 10B.
On the 10A of hole portion, be formed with and be used for the internal thread part that the other end external thread part 1B with piston rod 1 is threadedly engaged with.The 10A of hole portion has bottom surface 10D.In the 10A of hole portion, receive plectane 12 and ball bearing 13 be housed, this ball bearing 13 with plectane 12 rotatably supports on the 10D of bottom surface.
Plectane 12 has axle 14.The bottom surface 10D of axle 14 10A of through hole portion is equipped with nut 11 at the perforation end.Nut 11 plays and prevents that plectane 12 from falling and plectane 12 is remained effect apart from bottom surface 10D predetermined distance from the 10A of hole portion.
Shown in Fig. 2 A, ball bearing 13 is made of a plurality of balls on the circumference that is disposed between plectane 12 and the bottom surface 10D.Each ball is free between the back side of axle 14 at bottom surface 10D and plectane 12 rollably to contact with the back side of bottom surface 10D and plectane 12.When no compression force, under less resistance, allow ball bearing 13 to relatively rotate with bottom surface 10D with respect to plectane 12.12 axle 14 length setting is from nut 11 to plectane: the front end of the other end external thread part 1B of piston rod 1 not with plectane 12 state of contact under, ball bearing 13 not with the contacted length of bottom surface 10D.
Embedded hole 10B forms the square-section.Erecting tools is equiped with not shown action bars, and this action bars is as the rotating-operation member that is used for rotating operation tool body 10.Action bars has the jut with the square-section of embedded hole 10B tabling.On tool body 10, be formed with the pin-and-hole 10C that along continuous straight runs crosses embedded hole 10B.Also there is same pin-and-hole in correspondence position at the action bars jut.
Adopt above structure, be inserted into embedded hole 10B, pin is inserted into pin-and-hole 10C by jut with action bars, thus with the action bars fastening on tool body 10.With action bars fastening this operation on tool body 10, before the operation of piston rod 1 being fixed on the earrings member 2, carry out.
Then, the fixed operation of the piston rod 1 of this erecting tools of use to earrings member 2 is described.
At first, the external thread part 1B of piston rod 1 and the 10A of hole portion of tool body 10 are threadedly engaged with, action bars and piston rod 1 are relatively rotated, the other end external thread part 1B screw-in hole 10A of portion of piston rod 1 is connected up to the front end and the plectane 12 of piston rod 1.
Then, on one side the external thread part 1A of piston rod 1 is inserted into the screw 2A of earrings member 2 from the top, on one side by action bars turning tool main body 10.
Utilize this operation, the external thread part 1A of piston rod 1 and the screw 2A of earrings member 2 are threadedly engaged with.When external thread part 1A screw-in screw 2A was near screwing in the limit, screw 2A brought reaction force for the rotation of external thread part 1A.Input has torque from action bars on piston rod 1, on the other hand, also the rotation of external thread part 1A is worked from the reaction force of screw 2A, and the result acts between other end external thread part 1B and the 10A of hole portion relative torque.
This relative torque is as making other end external thread part 1B be screwed into the axial force of the 10A of hole portion and acting on the piston rod 1.Its result produces bigger surface pressing between the front end of piston rod 1 and plectane 12.This surface pressing is as stoping tool body 10 to work with the power in relative rotation of piston rod 1.Torque by action bars input is big more, and external thread part 1A is subjected to from the reaction force of screw 2A greatly more, and then surface pressing is big more.The rising of this surface pressing makes and stops the tool body 10 and the frictional force in relative rotation of piston rod 1 to increase, and therefore, the torque of action bars can be delivered to external thread part 1A reliably, thereby with enough moments of torsion external thread part 1A be connected to screw 2A.
After the screw 2A that piston rod 1 is connected to earrings member 2 with the moment of torsion of regulation goes up, to connect the opposite direction rotating operation bar of operation.At this, piston rod 1 has 2 place's threaded connection.That is, external thread part 1A that is threadedly engaged with screw 2A and the external thread part 1B that is threadedly engaged with the 10A of hole portion.When unscrewing these direction rotating operation bars that are threadedly engaged with, can not assert to unscrew which threaded connection that concrete condition is specifically handled usually.
But, in this erecting tools, bigger surface pressing between piston rod 1 front end and the plectane 12 is owing to the backward rotation operation of action bars reduces, follow therewith, when a plurality of balls of ball bearing 13 being rolled, plectane 12 can be rotated under less resistance by ball bearing 13 and the contacted plectane 12 of bottom surface 10D.That is, piston rod 1 can relatively rotate with tool body 10.
Under this state, if to connection side's rotating operation bar in the opposite direction, can not unscrew being connected of external thread part 1A and screw 2A, but piston rod 1 relatively rotates with tool body 10, thereby unscrew the connection of the external thread part 1B of piston rod 1 with respect to the 10A of hole portion of tool body 10.Then, by being rotated further action bars, tool body 10 can be unloaded from piston rod 1.
Therefore, if use this erecting tools that piston rod 1 is fixed on the earrings member 2, then can external thread part 1A be tightened to screw 2A with enough moments of torsion, on the other hand, with tool body 10 when piston rod 1 unloads, by the backward rotation action bars, can not influence external thread part 1A and screw 2A the state that is threadedly engaged with ground, easily tool body 10 is unloaded from piston rod 1.
After being fixed in piston rod 1 on the earrings member 2 like this, as shown in Figure 1, on the other end external thread part 1B of piston rod 1, being connected with and being used for piston 5 being fixed in nut 6 on the piston rod 1 at the assembling operation of damper.That is, the other end external thread part 1B that this erecting tools utilization is formed on the piston rod 1 in order to screw on nut 6 transfers torque on the piston rod 1, therefore, special-purpose handle part need be set on piston rod 1.
As shown above, by using this erecting tools, the side that need not cut piston rod is provided with handle part, just piston rod 1 can be fixed on the earrings member 2.Therefore, do not need to be used to form the machining of the piston rod 1 of handle part, the manufacturing cost that can cut down damper.And, owing on piston rod 1, not forming special-purpose handle part, therefore, do not exist the step of handle part to damage the dust ring 20 that remains on the cylinder cap 3 yet, can not produce because the formation handle part causes the effective travel of piston rod 1 to reduce yet.
In the embodiment of above explanation, use earrings member 2 to be used as coupling member, but erecting tools of the present invention is applicable to the situation that piston rod and all coupling members that comprise the earrings member are threadedly engaged with.
In the embodiment of above explanation, be that example be illustrated to the fixing of earrings member 2 with instrument with the piston rod 1 of damper, but erecting tools of the present invention is not limited to be used in damper, also can be used in the assembling of any machine with piston rod.
In the embodiment of above explanation, use is carried out special-shaped chimeric action bars with tool body and is used as functional unit, changes but functional unit can carry out various designs.For example, also can form and be formed at handle part such on the piston rod in the past, keep this handle part rotating operation tool body 1 with spanner in the periphery of tool body 10.
Industrial applicibility
As shown above, if adopt erecting tools of the present invention, can be form handle part ground at piston rod, piston rod is fixed on the coupling member such as ear ring component. Therefore, erecting tools of the present invention is applicable to the assembling of all devices with piston rod and coupling member, but is used for effect and has the assembling of the various dampers that the rail truck of big load uses, and especially brings into play desirable effect.
Claims (5)
1. erecting tools, be threadedly engaged with by an end external thread part (1A) that makes the piston rod (1) that is formed with external thread part (1A, 1B) at two ends and the screw (2A) that is formed on the coupling member, piston rod (1) is fixed on the coupling member, this erecting tools comprises tool body (10) and is used for the parts of rotating operation tool body (10)
This tool body (10) comprises hole portion (10A) and plectane (12), this hole portion (10A) has internal thread part and bottom surface (10D) that the other end external thread part (1B) with piston rod (1) is threadedly engaged with, this plectane (12) is connected with the bottom surface (10D) of hole portion (10A) rotationally by bearings with rolling contact (13)
And, under the state that the internal thread part of other end external thread part (1B) and hole portion (10A) has carried out being threadedly engaged with, plectane (12) connects from the end face of axial and piston rod (1), and, plectane (12) has axle (14), this axle (14) is outstanding to the opposite direction of the face that connects with piston rod (1) end of plectane (12), and fastening freely to rotate is on tool body (10).
2. erecting tools according to claim 1, wherein, coupling member is made of earrings member (2).
3. erecting tools according to claim 1, wherein, bearings with rolling contact (13) is made of ball bearing.
4. according to each described erecting tools in the claim 1～3, wherein, functional unit is made of action bars, and tool body (10) also has with action bars and carries out special-shaped chimeric embedded hole (10B).
5. according to each described erecting tools in the claim 1～3, wherein, tool body (10) also has the planar portions of pair of parallel in periphery, and functional unit comes the instrument of turning tool main body to constitute by the planar portions of controlling pair of parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100888050A CN101549486B (en) | 2008-03-31 | 2008-03-31 | Piston rod mounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100888050A CN101549486B (en) | 2008-03-31 | 2008-03-31 | Piston rod mounting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101549486A CN101549486A (en) | 2009-10-07 |
| CN101549486B true CN101549486B (en) | 2011-04-20 |
Family
ID=41154099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100888050A Expired - Fee Related CN101549486B (en) | 2008-03-31 | 2008-03-31 | Piston rod mounting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101549486B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB219912A (en) * | 1924-04-28 | 1924-08-07 | Alfred Herbert | Improvements in screw stud-setting or fixing tools |
| DE3136405A1 (en) * | 1981-09-14 | 1983-03-24 | Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt | Method for producing a stud bolt screwing-in device and stud bolt screwing-in device produced by this method |
| CN2080895U (en) * | 1990-09-15 | 1991-07-17 | 苏贵斌 | Bushing driver special for stud |
| US5735373A (en) * | 1994-12-17 | 1998-04-07 | Stabilus Gmbh | Shock absorber and a hinge eye for a shock absorber |
-
2008
- 2008-03-31 CN CN2008100888050A patent/CN101549486B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB219912A (en) * | 1924-04-28 | 1924-08-07 | Alfred Herbert | Improvements in screw stud-setting or fixing tools |
| DE3136405A1 (en) * | 1981-09-14 | 1983-03-24 | Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt | Method for producing a stud bolt screwing-in device and stud bolt screwing-in device produced by this method |
| CN2080895U (en) * | 1990-09-15 | 1991-07-17 | 苏贵斌 | Bushing driver special for stud |
| US5735373A (en) * | 1994-12-17 | 1998-04-07 | Stabilus Gmbh | Shock absorber and a hinge eye for a shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101549486A (en) | 2009-10-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan Patentee after: KYB Corp. Address before: Tokyo, Japan Patentee before: KAYABA INDUSTRY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 |