CN110977876A - Valve seat drawing device - Google Patents
Valve seat drawing device Download PDFInfo
- Publication number
- CN110977876A CN110977876A CN201911204548.7A CN201911204548A CN110977876A CN 110977876 A CN110977876 A CN 110977876A CN 201911204548 A CN201911204548 A CN 201911204548A CN 110977876 A CN110977876 A CN 110977876A
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- China
- Prior art keywords
- valve seat
- nut
- rotating shaft
- rod
- screw rod
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- 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
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/24—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same mounting or demounting valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a valve seat drawing device which comprises cross rods, support rods and drawing mechanisms, wherein the support rods are arranged at two ends of each cross rod, and the drawing mechanisms are arranged on the cross rods between the support rods; the drawing mechanism comprises a pull rod, a tensioning nut, a rotating shaft, a drawing nut, a spreading screw rod, a spreading block, a turntable and a clamping piece. The clamping device has the advantages that the supporting rod is supported on the cylinder cover, so that the clamping of the valve seat can be realized by rotating the tensioning nut in the drawing mechanism, and the quick drawing and disassembling of the valve seat can be realized by rotating the drawing nut, and the clamping device is strong in applicability, not easy to damage the valve seat, long in service life of the valve seat and low in production cost.
Description
Technical Field
The invention relates to the technical field of valve seat disassembly, in particular to a valve seat drawing device.
Background
The cylinder cover is an important part on an engine and comprises a structure consisting of an air inlet channel, an exhaust channel, a circulating water cooling system, an oil supply system and the like. The cylinder head valve seat is a part which is arranged on the inlet and outlet ports of the combustion surface of the cylinder head body, is matched with a valve to complete the inlet and outlet functions, and the concentricity, the roundness, the position and the like of the cylinder head valve seat have great influence on the performance of an engine. The existing assembling mode of the cylinder cover and the valve seat of the marine diesel engine is interference fit, the liquid nitrogen cold-shrinkage valve seat is utilized, the size of the valve seat is reduced, and then the valve seat is installed in the cylinder cover and the valve seat hole, when the valve seat is needed to be replaced due to failure, the valve seat and the cylinder cover and the valve seat hole are tightly matched, the valve seat is difficult to disassemble by using the traditional disassembling mode, and the valve seat is still disassembled in a destructive mode, so that the valve seat is easy to damage and cannot be reused, and the production cost is wasted.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the valve seat drawing device is convenient to disassemble and not easy to damage a valve seat, and solves the problem that the existing valve seat is difficult to disassemble and easy to damage, so that the production cost is wasted.
In order to solve the technical problems, the invention provides the following technical scheme:
a valve seat drawing device comprises a pull rod, a tensioning nut, a rotating shaft, a drawing nut, a spreading screw rod, a spreading block, a rotary table and a clamping piece, wherein one end of the pull rod penetrates through a cross rod between support rods and is connected with the rotating shaft through the tensioning nut, the other end of the pull rod is provided with the drawing nut in threaded fit with the pull rod, the end face of the drawing nut is abutted to the surface of the cross rod, one end of the rotating shaft, far away from the tensioning nut, is in threaded connection with the spreading screw rod, the other end of the spreading screw rod, far away from the rotating shaft, is also in threaded connection with the spreading block, the spreading screw rod is matched with the spreading block to form a lead screw nut structure, one end of the rotating shaft is inserted into the tensioning nut and is in threaded connection with the tensioning nut, the other end of the rotating shaft is provided with a bead at least partially protruding out of the rotating shaft along, articulated on the carousel have a plurality of parcels to strut the clamping piece of screw rod, the clamping piece is kept away from the one end of carousel and is propped open the piece cooperation to reciprocate on propping open the screw rod and realize the shrink and the expansion of clamping piece through propping open the piece.
Preferably, the clamping piece is fan-shaped, the one end that the carousel was kept away from to the clamping piece is the exposed core, the exposed core has the contained side along the outside extension of fan-shaped radial direction, the exposed core is close to the one side of strutting the screw rod and is equipped with and struts a complex recess, the bottom surface of recess is for being inclined to the contained side direction by the exposed core inner wall.
Preferably, the strutting piece is including the sleeve and a plurality of wedge of evenly fixing at the sleeve outer wall that are equipped with the internal thread through-hole, sleeve and strutting screw threaded connection, the wedge just presss from both sides with the recess cooperation and establishes in the recess.
Preferably, the number of the wedge blocks is the same as the number of the clips.
Preferably, one end of the tensioning nut is in threaded connection with the pull rod, and the other end of the tensioning nut is in threaded connection with the rotating shaft.
Preferably, the tensioning nut is provided with a locking bolt for tightly pushing the pull rod and the rotating shaft.
Preferably, a gasket is further arranged between the tensioning nut and the rotating shaft.
Preferably, a cushion block is further sleeved on the pull rod between the drawing nut and the cross rod.
Preferably, a supporting plate is further arranged at one end, away from the cross rod, of the supporting rod.
Compared with the prior art, the invention has the beneficial effects that:
1. the supporting rod is supported on the cylinder cover, so that the clamping of the valve seat and the quick drawing and disassembling of the valve seat can be realized by rotating the tensioning nut in the drawing mechanism, the valve seat is not easy to damage by the device, the service life of the valve seat is prolonged, and the production cost is reduced.
2. Through the piece of strutting of designing not unidimensional, guarantee that the device can draw the disk seat of different models, the suitability is stronger.
3. Through the setting of backup pad, prevent that the device from producing the destruction to the cylinder cap when drawing the atress by the bracing piece, influence cylinder cap quality.
Drawings
FIG. 1 is a schematic structural diagram of a valve seat pulling apparatus according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a clip according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a spreading block according to an embodiment of the present invention.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 3, the embodiment discloses a valve seat drawing device, which includes a cross bar 1, support bars 2 and a drawing mechanism 3, wherein the support bars 2 are respectively arranged at two ends of the cross bar 1, and the drawing mechanism 3 is arranged on the cross bar 1 between the support bars 2; the valve seat 4 is supported on a cylinder cover (not shown) through a support rod 2, and the valve seat is quickly pulled and detached by using a pulling mechanism 3.
The drawing mechanism 3 comprises a pull rod 31, a tension nut 32, a rotating shaft 33, a drawing nut 34, a spreading screw 35, a spreading block 36, a rotating disc 37 and a clamping piece 38, one end of the pull rod 31 penetrates through a cross rod 1 between the support rods 2 and is connected with the rotating shaft 33 through the tension nut 32, specifically referring to fig. 3, in order to ensure that the device is convenient to assemble and disassemble, one end of the tension nut 32 is in threaded connection with the pull rod 31, the other end of the tension nut 32 is in threaded connection with the rotating shaft 33, the pull rod 31, the rotating shaft 33 and the tension nut 32 are prevented from loosening during rotation, and a locking bolt 39 for tightly jacking the pull rod 31 and the rotating shaft 33 is respectively arranged on; the other end of the pull rod 31 is provided with a pull nut 34 in threaded fit with the pull rod, the end face of the pull nut 34 is abutted to the surface of the cross rod 1, the relative position of the pull rod 31 and the cross rod 1 can be adjusted in the axial direction by rotating the pull nut 34, one end of the rotating shaft 33, which is far away from the tension nut 32, is in threaded connection with a distraction screw 35, one end of the distraction screw 35, which is far away from the rotating shaft 33, is also in threaded connection with a distraction block 36, the distraction screw 35 and the distraction block 36 are matched to form a screw-nut structure, the distraction block 36 can move up and down on the distraction screw 35 through the rotation of the distraction screw 35, one end of the rotating shaft 33 is inserted into the tension nut 32 and is in threaded connection with the tension nut 32, the other end of the rotating shaft is circumferentially provided with a bead at least partially protruding from the outside the rotating, the turntable 37 and the rotating shaft 33 are freely matched along the axial direction, a plurality of clamping pieces 38 wrapping the expanding screw rods 35 are hinged on the turntable 37, one ends of the clamping pieces 38, far away from the turntable 37, are matched with the expanding blocks 36, and move up and down on the expanding screw rods 35 through the expanding blocks 36 to achieve contraction and expansion of the clamping pieces 38.
In this embodiment, the number of the clamping pieces 38 is three, one end of the clamping piece 38, which is far away from the rotating disc 37, is matched with the expanding block 36, and the expanding block 36 moves up and down on the expanding screw 35 to realize the contraction and expansion of the clamping piece 38; specifically, support bracing piece 2 on the cylinder cap, stretch into behind disk seat 4 bottom with clamping piece 38, rotate tensioning nut 32 again, rotate through pivot 33 and drive the rotation of distraction screw 35, and because the piece 36 that struts cooperates with clamping piece 38, make the piece 36 that struts can not rotate, make the piece 36 that struts remove down on the screw 35 that struts like this, thereby drive clamping piece 38 to expand and press from both sides tight disk seat 4, then draw nut 34 through rotating, make the pull rod 31 upward movement drive tensioning nut 32 also upward movement, thereby drive the upward movement of distraction screw 35 and rolling disc 37 through pivot 33, at last pull out disk seat 4 from quick detach from the cylinder cap through clamping piece 38, and this structure is difficult for destroying disk seat 4, improve disk seat 4's life, reduction in production cost.
It should be further noted that the expanding block 36 and the expanding screw 35 are in separable fit, and the device can be ensured to pull valve seats 4 of different models by replacing the expanding blocks 36 with different sizes, so that the applicability is stronger.
Referring to fig. 4, the clamping piece 38 is fan-shaped, the one end that the carousel 37 is kept away from to the clamping piece 38 is the exposed core, the exposed core has contained edge 381 along fan-shaped radial direction outside extension, contained edge 381 laminates at valve seat 4 bottom end face when the centre gripping, one side that the exposed core is close to the distraction screw 35 is equipped with and struts piece 36 complex recess 382, the bottom surface of recess 382 is for inclining to contained edge 381 direction by the exposed core inner wall, through the setting of contained edge 381, is favorable to the clamping piece 38 centre gripping and draws valve seat 4.
Referring to fig. 5, the expanding block 36 includes a sleeve 361 having an internal threaded through hole and a plurality of wedge blocks 362 uniformly fixed on an outer wall of the sleeve 361, in this embodiment, the number of the wedge blocks 362 is the same as that of the clamping pieces 38, and is also three; the sleeve 361 is in threaded connection with the spreading screw 35, the wedge block 362 is matched with the groove 382 and clamped in the groove 382, and the wedge block 362 moves up and down in the groove 382 to achieve the contraction and expansion of the clip 38.
Further, a gasket (not labeled in the figure) is further disposed between the tensioning nut 32 and the rotating shaft 33.
Furthermore, a cushion block (not labeled in the figure) is further sleeved on the pull rod 31 between the drawing nut 34 and the cross rod 1.
Still further, bracing piece 2 still is equipped with backup pad 21 from 1 one end of horizontal pole, increases the area of contact of bracing piece 2 and cylinder cap, prevents that the device from producing destruction to the cylinder cap when drawing the atress bracing piece 2, influencing the cylinder cap quality.
The working principle of the embodiment is as follows: the support plate 21 on the support rod 2 is supported on the cylinder cover, the pull rod 31 and the rotating shaft 33 are tightly pressed through the locking bolt 39, the clamping piece 38, the expanding screw rod 35 and the expanding block 36 on the expanding screw rod 35 all extend into the bottom of the valve seat 4, the clamping edge 381 of the clamping piece 38 is ensured to be attached to the bottom end surface of the valve seat 4, the tensioning nut 32 is rotated, the expanding screw rod 35 is driven to rotate through the rotation of the rotating shaft 33, the expanding block 36 cannot rotate due to the fact that the wedge-shaped block 362 on the expanding block 36 is matched with the groove 382 of the clamping piece 38, the expanding block 36 moves downwards on the expanding screw rod 35, the clamping piece 38 is driven to expand and clamp the valve seat 4, then the pulling nut 34 is rotated, the pull rod 31 moves upwards to drive the tensioning nut 32 to move upwards, the expanding screw rod 35 and the rotating disc 37 are driven to move upwards through the rotating shaft 33, and finally the valve seat 4 is quickly detached and, and this structure is difficult for destroying disk seat 4, improves disk seat 4's life, reduction in production cost.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above-mentioned embodiments only represent embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the concept of the present invention, and these embodiments are all within the protection scope of the present invention.
Claims (9)
1. The utility model provides a disk seat draw-off gear which characterized in that: the drawing device comprises cross rods, support rods and drawing mechanisms, wherein the support rods are arranged at two ends of each cross rod, and the drawing mechanisms are arranged on the cross rods between the support rods;
the drawing mechanism comprises a pull rod, a tensioning nut, a rotating shaft, a drawing nut, a spreading screw rod, a spreading block, a rotary table and a clamping piece, wherein one end of the pull rod penetrates through a cross rod between supporting rods and is connected with the rotating shaft through the tensioning nut, the other end of the pull rod is provided with the drawing nut in threaded fit with the pull rod, the end surface of the drawing nut is abutted against the surface of the cross rod, one end of the rotating shaft, far away from the tensioning nut, is in threaded connection with the spreading screw rod, one end of the spreading screw rod, far away from the rotating shaft, is also in threaded connection with the spreading block, the spreading screw rod is matched with the spreading block to form a screw rod nut structure, one end of the rotating shaft is inserted into the tensioning nut and is in threaded connection with the tensioning nut, the other end of the rotating shaft is provided with a bead at least partially protruding out of the, articulated on the carousel have a plurality of parcels to strut the clamping piece of screw rod, the clamping piece is kept away from the one end of carousel and is propped open the piece cooperation to reciprocate on propping open the screw rod and realize the shrink and the expansion of clamping piece through propping open the piece.
2. The valve seat drawing device according to claim 1, wherein: the clamping piece is fan-shaped, the one end that the carousel was kept away from to the clamping piece is the exposed core, the exposed core has the contained side along the outside extension of fan-shaped radial direction, one side that the exposed core is close to the screw rod of strutting is equipped with and struts a complex recess, the bottom surface of recess is for inclining to the contained side direction by the exposed core inner wall.
3. The valve seat drawing device according to claim 2, wherein: the strutting piece is including the sleeve and a plurality of wedge of evenly fixing at the sleeve outer wall that are equipped with the internal thread through-hole, the sleeve with strut screw rod threaded connection, the wedge just presss from both sides with the recess cooperation and establishes in the recess.
4. A valve seat drawing device according to claim 3, wherein: the number of the wedge-shaped blocks is the same as that of the clamping pieces.
5. The valve seat drawing device according to claim 1, wherein: one end of the tensioning nut is in threaded connection with the pull rod, and the other end of the tensioning nut is in threaded connection with the rotating shaft.
6. The valve seat drawing device according to claim 2, wherein: and the tensioning nut is respectively provided with a locking bolt for tightly propping the pull rod and the rotating shaft.
7. The valve seat drawing device according to claim 1, wherein: and a gasket is arranged between the tensioning nut and the rotating shaft.
8. The valve seat drawing device according to claim 1, wherein: and a cushion block is further sleeved on the pull rod between the drawing nut and the cross rod.
9. The valve seat drawing device according to claim 1, wherein: and a supporting plate is further arranged at one end of the supporting rod, which is far away from the cross rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204548.7A CN110977876A (en) | 2019-11-29 | 2019-11-29 | Valve seat drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204548.7A CN110977876A (en) | 2019-11-29 | 2019-11-29 | Valve seat drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110977876A true CN110977876A (en) | 2020-04-10 |
Family
ID=70088616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911204548.7A Pending CN110977876A (en) | 2019-11-29 | 2019-11-29 | Valve seat drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110977876A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604856A (en) * | 2020-04-29 | 2020-09-01 | 中船澄西船舶修造有限公司 | Valve head extractor |
| CN111716288A (en) * | 2020-07-07 | 2020-09-29 | 一汽解放汽车有限公司 | Bearing dismounting device |
| CN112706117A (en) * | 2020-12-16 | 2021-04-27 | 广东潮艺金属实业有限公司 | Doll extracting tool |
| CN112781663A (en) * | 2020-12-30 | 2021-05-11 | 中广核核电运营有限公司 | Nuclear power range probe collimator replacement tool |
| CN114012660A (en) * | 2021-11-10 | 2022-02-08 | 中国航发南方工业有限公司 | Aircraft engine centrifugal impeller elastic shaft puller and decomposition method thereof |
| CN114618227A (en) * | 2022-03-24 | 2022-06-14 | 张安辉 | Quick-release concentration equipment for processing silica sol modified building exterior wall coating |
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| DE20018359U1 (en) * | 2000-10-26 | 2001-02-08 | Klann Tools Ltd., Didcot, Oxfordshire | Device for mounting valve wedges on motor vehicle engines |
| CN201808023U (en) * | 2010-09-28 | 2011-04-27 | 陈辉 | Fast drawing tool for oil feeder sheath |
| CN204748506U (en) * | 2015-07-16 | 2015-11-11 | 南车洛阳机车有限公司 | Diesel engine pneumatic valve seat and mistake wheel bearing and round pin shaftbushing dismounting device |
| CN204868757U (en) * | 2015-08-27 | 2015-12-16 | 中国有色(沈阳)泵业有限公司 | Little latus rectum cone valve disk seat dismounting device |
| CN205009164U (en) * | 2015-10-09 | 2016-02-03 | 陈杰 | Novel trade valve ware |
| CN206663107U (en) * | 2017-03-28 | 2017-11-24 | 宝钢集团新疆八一钢铁有限公司 | A kind of draw-off gear for removing inserted valve valve pocket |
| CN109877780A (en) * | 2019-03-21 | 2019-06-14 | 美钻石油钻采***工程（上海）有限公司 | Valve seat Fast Installation component |
-
2019
- 2019-11-29 CN CN201911204548.7A patent/CN110977876A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20018359U1 (en) * | 2000-10-26 | 2001-02-08 | Klann Tools Ltd., Didcot, Oxfordshire | Device for mounting valve wedges on motor vehicle engines |
| CN201808023U (en) * | 2010-09-28 | 2011-04-27 | 陈辉 | Fast drawing tool for oil feeder sheath |
| CN204748506U (en) * | 2015-07-16 | 2015-11-11 | 南车洛阳机车有限公司 | Diesel engine pneumatic valve seat and mistake wheel bearing and round pin shaftbushing dismounting device |
| CN204868757U (en) * | 2015-08-27 | 2015-12-16 | 中国有色(沈阳)泵业有限公司 | Little latus rectum cone valve disk seat dismounting device |
| CN205009164U (en) * | 2015-10-09 | 2016-02-03 | 陈杰 | Novel trade valve ware |
| CN206663107U (en) * | 2017-03-28 | 2017-11-24 | 宝钢集团新疆八一钢铁有限公司 | A kind of draw-off gear for removing inserted valve valve pocket |
| CN109877780A (en) * | 2019-03-21 | 2019-06-14 | 美钻石油钻采***工程（上海）有限公司 | Valve seat Fast Installation component |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604856A (en) * | 2020-04-29 | 2020-09-01 | 中船澄西船舶修造有限公司 | Valve head extractor |
| CN111604856B (en) * | 2020-04-29 | 2022-04-19 | 中船澄西船舶修造有限公司 | Valve head extractor |
| CN111716288A (en) * | 2020-07-07 | 2020-09-29 | 一汽解放汽车有限公司 | Bearing dismounting device |
| CN111716288B (en) * | 2020-07-07 | 2022-02-22 | 一汽解放汽车有限公司 | Bearing dismounting device |
| CN112706117A (en) * | 2020-12-16 | 2021-04-27 | 广东潮艺金属实业有限公司 | Doll extracting tool |
| CN112781663A (en) * | 2020-12-30 | 2021-05-11 | 中广核核电运营有限公司 | Nuclear power range probe collimator replacement tool |
| CN114012660A (en) * | 2021-11-10 | 2022-02-08 | 中国航发南方工业有限公司 | Aircraft engine centrifugal impeller elastic shaft puller and decomposition method thereof |
| CN114618227A (en) * | 2022-03-24 | 2022-06-14 | 张安辉 | Quick-release concentration equipment for processing silica sol modified building exterior wall coating |
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Application publication date: 20200410 |
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| RJ01 | Rejection of invention patent application after publication |