CN109571355A - Piston extracting tool - Google Patents
Piston extracting tool Download PDFInfo
- Publication number
- CN109571355A CN109571355A CN201811615400.8A CN201811615400A CN109571355A CN 109571355 A CN109571355 A CN 109571355A CN 201811615400 A CN201811615400 A CN 201811615400A CN 109571355 A CN109571355 A CN 109571355A
- Authority
- CN
- China
- Prior art keywords
- piston
- lift block
- compact heap
- connecting rod
- extracting tool
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
Abstract
The present invention provides a kind of piston extracting tools, including handle, with the connecting rod of handle integrally connected and the extraction assembly that can be connect with connecting rod, extraction assembly includes the lift block and compact heap being coaxially disposed from inside to outside, lift block can be mounted in the internal cavities of compact heap, lift block can be fixedly connected with connecting rod, the lateral wall of lift block has inclined first surface, the second surface cooperated with the first surface is equipped in internal cavities, the outside wall surface of compact heap can be placed in the groove at the top of piston, rotational handle is able to drive the lift block being fixedly connected with connecting rod and moves up, piston is fixed so that the first surface is engaged with the second surface and compact heap radial dilatation is made to abut the groove, and then piston is extracted.The present invention passes through the mutual cooperation of two tapered surfaces, and axial force is changed to press to the radial force of piston combustion chamber interior walls, takes out piston more convenient, improves piston disassembly efficiency；Also, piston is fixed when extracting.
Description
Technical field
The present invention relates to engine piston extractive technique fields, more particularly to a kind of piston extracting tool.
Background technique
Existing piston for engine has difficult disassembly, difficult the problem of taking out, takes out process in maintenance or replacement
In, due to piston heavier-weight itself, piston be bonded with cylinder sleeve it is more close, when manpower transport's piston connecting rod parts, without steady
The fixed point of application, once the connecting-rod head stress of piston, piston is easy to deviate from from cylinder sleeve suddenly, and piston is caused to collide with or fall
On the ground the problem of.
Secondly, being easy to change the mutual angle of piston ring notch when moving piston rod part during taking out.Piston ring
For the gap of sealing piston and cylinder jacket, because piston ring is jagged, in order to reach air leakage at least, usually to make multiple tracks living
The angle of plug ring is mutually fixed angle.Preparing in installation process in transfer piston, tool and hand can inevitably touch piston ring,
Original angle is not only changed, while easily making piston ring deformation occurs, if it find that piston annular strain, needs to align repeatedly,
Or re-replace piston ring；As found gap-clearance of piston rings angulation change not in time, it is more likely that cause mechanical disorder, such as gas blowby
Amount is big.
In addition, large labor intensity easily causes hand bump injury or injures by a crashing object during piston takes out, it is unnecessary to generate
Personal injury.
Summary of the invention
The purpose of the present invention is at least solving one of drawbacks described above and deficiency, which is achieved through the following technical solutions
's.
The present invention provides a kind of piston extracting tools, connecting rod and energy including handle and the handle integrally connected
Enough extraction assemblies connecting with the connecting rod, the extraction assembly includes the lift block and compact heap being coaxially disposed from inside to outside,
The lift block can be mounted in the internal cavities of the compact heap, and the lift block can be fixedly connected with the connecting rod,
The lateral wall of the lift block has inclined first surface, and the cooperated with the first surface is equipped in the internal cavities
Two surfaces, the outside wall surface of the compact heap can be placed in the groove at the top of piston, rotate the handle be able to drive with
The lift block that the connecting rod is fixedly connected moves up, so that the first surface is engaged and makes with the second surface
The compact heap radial dilatation abuts the groove and fixes the piston, and then the piston is extracted.
Further, the compact heap is connect by link block with the connecting rod, one end of the connecting rod and the connection
Block is fixedly connected, and the compact heap is fixed on the periphery of the link block by way of clamping.
Further, the periphery of the link block is equipped with annular protrusion, the inner wall of the compact heap be equipped with it is described
The annular slot that annular protrusion matches.
Further, the lift block is fixedly connected by studs with the connecting rod, described one end of the connecting rod
It is connect by screw thread with one end of the studs, the other end of the studs passes through the central through hole of the link block
It is fixedly connected at the top of the lift block.
Further, the bottom of the lift block is concave, and the internal screw thread of the lift block is from described in the lift block
Bottom extends to the top of the lift block, and the studs is mentioned from the bottom of the lift block by described
Block is risen to connect with the connecting rod.
Further, the lift block is pyramidal structure, and the internal cavities of the compact heap are and the taper knot
The conical cavity of structure cooperation, the first surface and the second surface are tapered surface.
Further, the compact heap is cylindricality compact heap.
Further, the compact heap includes at least two the first compact heaps to connect along circumferential direction, at least two institutes
It states the first compact heap and is interconnected to form the cylindricality compact heap.
Further, the periphery of at least two first compact heaps passes through retainer plate clip together.
Further, the axial height of the internal cavities is greater than the axial height of the lift block.
Advantages of the present invention is as follows:
(1) piston extracting tool provided by the invention, structure is simply light and handy, easy to operate, can be quickly square by handle
Just fixation and extraction piston, are substantially improved the maintenance disassembly efficiency of piston, time saving and energy saving；
(2) piston extracting tool provided by the invention, whole dismounting process will not touch piston and its associated components,
The easily worn parts such as piston ring will not be caused to damage, piston ring notch mutual angle will not be changed, and can guarantee components
Cleannes will not be touched by the external world；
(3) from the point of view of ergonomics, it will hold or have in arms the mobile mode of Piston and rod assembly and be changed to mention
The mobile mode of Piston and rod assembly, meets human body operating habit, not will cause unreasonable force application angle and range, also keep away
Unnecessary personal injury in operating process is exempted from；
(4) structure of the invention is compact, practical, can be widely applied to the maintenance dismounting of all kinds of engines.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.
Fig. 1 is the assembling structure schematic diagram of piston extracting tool and piston provided in an embodiment of the present invention；
Fig. 2 is the assembling structure sectional view of piston extracting tool provided in an embodiment of the present invention and piston；
Fig. 3 is the structural schematic diagram of piston extracting tool provided in an embodiment of the present invention；
Fig. 4 is the structural decomposition diagram of piston extracting tool provided in an embodiment of the present invention；
Appended drawing reference is as follows in figure:
10- piston extracting tool 20- piston
The inner wall 1- handle of the combustion chamber 201-
The internal screw thread of 2- connecting rod 21- connecting rod
3- lift block 31- first surface
The internal screw thread 4- compact heap of 32- lift block
41- second surface 42- outside wall surface
43- annular slot 44- locating slot
401- the first compact heap 5- link block
51- annular protrusion 6- studs
7- retainer plate
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
Fig. 1 to Fig. 4 shows the structural schematic diagram of the piston extracting tool of embodiment according to the present invention offer.It extracts
When, piston extracting tool 10 is assemblied in the groove of the top combustion chamber of piston 20, the outer wall and groove of piston extracting tool 10
Inner wall 201 contact.Piston extracting tool 10 includes the connecting rod 2 of handle 1 and 1 integrally connected of handle and can connect with connecting rod 2
The extraction assembly connect, extraction assembly include the lift block 3 and compact heap 4 being coaxially disposed from inside to outside, and lift block 3 can be mounted on
In the internal cavities of compact heap 4, lift block 3 can be fixedly connected with connecting rod 2, and the lateral wall of lift block 3 has inclined first
Surface 31, the second surface 41 cooperated with first surface 31 is equipped in internal cavities, and the outside wall surface 42 of compact heap 4 can be placed in
Groove at the top of piston 20, rotational handle 1 is able to drive the lift block 3 being fixedly connected with connecting rod 2 and moves up, so that the first table
Face is engaged with second surface and 4 radial dilatation of compact heap is made to abut groove and fixes piston 20, and then piston 20 is mentioned
It takes out.
Specifically, compact heap 4 is fixedly connected by link block 5 with connecting rod 2, and the periphery of link block 5 is arranged in compact heap 4,
One end of connecting rod 2 is fixedly connected with link block 5, and compact heap 4 is fixed on the periphery of link block 5 by way of clamping, connection
The periphery of block 5 is equipped with annular protrusion 51, and the inner wall of compact heap 4 is equipped with the annular slot 43 matched with annular protrusion 51.
Link block 5 is used not only for compact heap 4 is fixed, additionally it is possible to limit to the axial movement of lift block 3.
Lift block 3 is fixedly connected by the connecting rod 2 of studs 6, and one end of connecting rod 2 passes through screw thread and studs 6
One end connection, the axial central through hole that the other end of studs 6 passes through link block 5 are fixedly connected with the top of lift block 3.
In specific implementation, studs 6 is an integral structure with lift block 3, and the lower end of studs 6 and lift block 3 are solid
Fixed connection, the upper end of studs 6 pass through link block 5 and connect with the internal screw thread 21 of connecting rod 2.Internal screw thread 21 and studs 6
The first of top is threadedly engaged, and 21 length of internal screw thread is greater than the length with the first screw thread, and rotating handle 1 can be in the work of screw thread
Under, make studs 6 that lift block 3 be driven to move up a certain distance.
In another embodiment, studs 6 and lift block 3 are split type structure, and studs 6 is successively set from top to bottom
It is equipped with three sections of screw threads, respectively the first screw thread, the second screw thread and third screw thread, the first screw thread and the internal screw thread 21 in connecting rod 2
It is cooperatively connected, the second screw thread is fixedly connected with the cooperation of link block 5, and third screw thread is with the top side detachable of lift block 3 fixed to be connected
It connects.
Lift block 3 is pyramidal structure, and the first surface 31 of the outer wall of lift block 3 is tapered surface, accordingly, compact heap 4
Internal cavities are the conical cavity matched with pyramidal structure, and the second surface 41 of the inner wall of conical cavity is also tapered surface, and
And the axial height of conical cavity is greater than the axial height of pyramidal structure, enables lift block 3 in conical cavity along axial direction
Direction is mobile.In present embodiment, lift block 3 is conical structure, and first surface 31 and second surface 41 are circular conical surface；Its
In his embodiment, the pyramidal structure of lift block 3 or for example trapezoidal mesa-shaped, the first surface 31 of side wall is plane,
The second surface 41 cooperated with first surface 31 is also plane.
For the weight for mitigating piston extracting tool 10, hollow pyramidal structure is set by lift block 3；The bottom of lift block 3
Portion is concave, and the internal screw thread 32 of lift block 3 extends to the top of lift block 3 from the bottom of lift block 3, enables studs 6
It is enough to be connected from the bottom of lift block 3 by lift block 3 and connecting rod 2.
Particularly, compact heap 4 be cylindricality compact heap, the first compact heap 401 to connect along circumferential direction including at least two,
At least two first compact heaps 401 are interconnected to form cylindricality compact heap 4.In present embodiment, it is provided with 3 the first compact heaps
401,3 the first compact heaps 401 surround to form the cylindricality compact heap 4 that bottom is matched with the combustion chamber of piston 20.Other are implemented
In mode, compact heap 4 can also be also configured as integral structure, and the cone matched with lift block 3 is opened up in the bottom of compact heap 4
Shape cavity.
To guarantee that multiple first compact heaps 401 are fixed, it is arranged O-shaped retainer plate 7 in the periphery of compact heap 4, by first
401 clip of compact heap is together.The periphery of compact heap 4 is equipped with the locating slot 44 for being arranged O-shaped retainer plate 7.In addition, to protect
Stressed effect is demonstrate,proved, sets coarse surface for the second surface of compact heap 4.
Working principle of the present invention is as follows:
As illustrated in fig. 1 and 2, when extraction, piston extracting tool 10 is put into the combustion chamber of piston 20, makes compact heap 4
Outer wall is contacted with the inner wall 201 of combustion chamber.Rotating handle 1, by the effect of the internal screw thread 21 of connecting rod 2 drive studs 6 to
Upper movement, and the lift block 3 being fixedly connected with studs 6 is driven to move up, when moving to a certain distance on lift block 3,
The first tapered surface (first surface 31) of lift block 3 is contacted with the second tapered surface (second surface 41) of compact heap 4, due to first
Tapered surface is inclined-plane, and the upward power F for the first tapered surface that compact heap 4 is subject to is changed into axial direction under the action of the second tapered surface
The first upward stress F1With radially outer second stress F2；Simultaneously as the limitation of the link block 5 of axial direction, compact heap
4 cannot in axial direction move up, and can only radially be displaced outwardly, and support so that the outside wall surface 42 of compact heap 4 be made to compress
It is connected to the inner wall 201 of piston combustion bowl；Second tapered surface of compact heap 4 is under the action of the radial pressure of lift block 3, so that living
Plug extracting tool 10 tightly holds with piston 20 and is combined together, so as in the case where holding handle 1 by piston 20
Lift together.By the mutual cooperation of two tapered surfaces, axial power is changed to the radial power for pressing to piston combustion chamber interior walls,
It takes out and is more convenient, also, during taking-up, piston extracting tool 10 and piston 20 are fixed, can prevent it from falling on ground
On.
Piston extracting tool provided by the invention, structure is simply light and handy, easy to operate, can be quickly and easily by handle
Fixed and extraction piston, is substantially improved the maintenance disassembly efficiency of piston, time saving and energy saving；Whole dismounting process will not touch piston
And its associated components, the easily worn parts such as piston ring will not be caused to damage, piston ring notch mutual angle, and energy will not be changed
The cleannes for enough guaranteeing components, will not be touched by the external world；In addition, will hold or have in arms from the point of view of ergonomics
The mobile mode of Piston and rod assembly is changed to propose the mobile mode of Piston and rod assembly, meets human body operating habit, Bu Huizao
At unreasonable force application angle and range, unnecessary personal injury in operating process is also avoided；Structure of the invention is compact,
It is practical, it can be widely applied to the maintenance dismounting of all kinds of engines.
It should be pointed out that in the description of the present invention, term " first ", " second " are only used to an entity or behaviour
Make with another entity or operate distinguish, without necessarily requiring or implying between these entities or operation there are it is any this
The actual relationship of kind or sequence.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of piston extracting tool, which is characterized in that including handle, with the connecting rod of the handle integrally connected and can be with
The extraction assembly of the connecting rod connection, the extraction assembly includes the lift block and compact heap being coaxially disposed from inside to outside, described
Lift block can be mounted in the internal cavities of the compact heap, and the lift block can be fixedly connected with the connecting rod, described
The lateral wall of lift block has inclined first surface, is equipped with the second table cooperated with the first surface in the internal cavities
Face, the outside wall surface of the compact heap can be placed in the groove at the top of piston, rotate the handle be able to drive with it is described
The lift block that connecting rod is fixedly connected moves up, so that the first surface and the second surface are engaged and make described
Compact heap radial dilatation abuts the groove and fixes the piston, and then the piston is extracted.
2. piston extracting tool according to claim 1, which is characterized in that the compact heap passes through link block and the company
Bar connection, one end of the connecting rod are fixedly connected with the link block, and the compact heap is fixed on described by way of clamping
The periphery of link block.
3. piston extracting tool according to claim 2, which is characterized in that the periphery of the link block is equipped with convex annular
It rises, the inner wall of the compact heap is equipped with the annular slot matched with the annular protrusion.
4. piston extracting tool according to claim 2, which is characterized in that the lift block by studs with it is described
Connecting rod is fixedly connected, and described one end of the connecting rod is connect by screw thread with one end of the studs, the studs
The other end pass through the link block central through hole and the lift block at the top of be fixedly connected.
5. piston extracting tool according to claim 4, which is characterized in that the bottom of the lift block is concave, described
The internal screw thread of lift block extends to the top of the lift block from the bottom of the lift block, so that the double end spiral shell
Column can be connected from the bottom of the lift block by the lift block with the connecting rod.
6. piston extracting tool according to claim 1, which is characterized in that the lift block is pyramidal structure, the pressure
The internal cavities of tight block are the conical cavity cooperated with the pyramidal structure, and the first surface and the second surface are equal
For tapered surface.
7. piston extracting tool according to claim 1, which is characterized in that the compact heap is cylindricality compact heap.
8. piston extracting tool according to claim 7, which is characterized in that the compact heap includes at least two circumferentially
The first compact heap that direction connects, at least two first compact heaps are interconnected to form the cylindricality compact heap.
9. piston extracting tool according to claim 8, which is characterized in that the periphery of at least two first compact heaps
Together by retainer plate clip.
10. piston extracting tool according to claim 1, which is characterized in that the axial height of the internal cavities is greater than
The axial height of the lift block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615400.8A CN109571355A (en) | 2018-12-27 | 2018-12-27 | Piston extracting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615400.8A CN109571355A (en) | 2018-12-27 | 2018-12-27 | Piston extracting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109571355A true CN109571355A (en) | 2019-04-05 |
Family
ID=65932129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811615400.8A Pending CN109571355A (en) | 2018-12-27 | 2018-12-27 | Piston extracting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109571355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410383A (en) * | 2019-08-30 | 2019-11-05 | 扬州市永发气动液压设备有限公司 | A kind of composite material scuffing of cylinder bore type hydraulic cylinder |
| CN110410383B (en) * | 2019-08-30 | 2024-05-17 | 扬州市永发气动液压设备有限公司 | Composite material cylinder pulling type hydraulic cylinder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2504028Y (en) * | 2001-10-24 | 2002-08-07 | 程漠贵 | Piston puller |
| DE10232153A1 (en) * | 2002-07-16 | 2004-03-04 | Michael Meier | Molding device for machines with conical tool receiver has spindle bearing which can easily be removed |
| CN203510091U (en) * | 2013-10-08 | 2014-04-02 | 潍柴动力股份有限公司 | Piston disassembling and assembling device |
-
2018
- 2018-12-27 CN CN201811615400.8A patent/CN109571355A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2504028Y (en) * | 2001-10-24 | 2002-08-07 | 程漠贵 | Piston puller |
| DE10232153A1 (en) * | 2002-07-16 | 2004-03-04 | Michael Meier | Molding device for machines with conical tool receiver has spindle bearing which can easily be removed |
| CN203510091U (en) * | 2013-10-08 | 2014-04-02 | 潍柴动力股份有限公司 | Piston disassembling and assembling device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410383A (en) * | 2019-08-30 | 2019-11-05 | 扬州市永发气动液压设备有限公司 | A kind of composite material scuffing of cylinder bore type hydraulic cylinder |
| CN110410383B (en) * | 2019-08-30 | 2024-05-17 | 扬州市永发气动液压设备有限公司 | Composite material cylinder pulling type hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
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| RJ01 | Rejection of invention patent application after publication |