CN110788795A - Centering device and centering method for diesel engine pump supporting box - Google Patents
Centering device and centering method for diesel engine pump supporting box Download PDFInfo
- Publication number
- CN110788795A CN110788795A CN201911114035.7A CN201911114035A CN110788795A CN 110788795 A CN110788795 A CN 110788795A CN 201911114035 A CN201911114035 A CN 201911114035A CN 110788795 A CN110788795 A CN 110788795A
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- circular section
- cone
- inner cone
- hole
- centering
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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
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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
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Abstract
The invention discloses a centering device of a diesel engine pump supporting box, which comprises: the inner cone is a cone formed by an upper circular section, a lower circular section and a tapered outer surface, and is provided with a through hole penetrating through the upper circular section and the lower circular section; the outer cone is a cylinder formed by an upper circular section, a lower circular section, a circumferential outer surface and a conical inner surface, and the conical inner surface is surrounded into an inner hole penetrating through the upper circular section and the lower circular section; a plurality of grooves are formed in the upper circular section and the lower circular section of the outer cone along the circumferential direction; the inner cone is inserted into the inner hole in a shape matching mode, the thickness of the inner cone is smaller than that of the outer cone, and the lower circular section of the inner cone is flush with the upper circular section of the outer cone; a semicircular key; a centering bolt; a pressure plate and a hand wheel assembly. The invention also includes methods of using the centering device. The centering device and the centering method are simple to operate, accurate in centering and low in labor cost.
Description
Technical Field
The present invention relates to the field of diesel engines, and more particularly, to a centering device and a centering method for a pump support box of a diesel engine.
Background
The pump supporting box, also called auxiliary transmission box, is a box body installed at the free end of the diesel engine, and mainly has the function of providing a box body with installation position support for a main engine oil pump and high and low water pumps. The inside of the pump supporting box is provided with a pump transmission gear train, and the outside is provided with an oil pump and high and low temperature water pumps. During installation, the pump supporting box and the center of the crankshaft are centered by technological measures so as to ensure that the tooth gaps of all gear pieces of the transmission gear train of the pump are in a qualified range and prevent the gear teeth from being strained and bonded.
The existing installation method of the pump supporting box is that a magnetic force meter rack and a dial indicator are placed on the end face of the tail end of a crankshaft, the crankshaft is rotated, the shaft hole of the pump supporting box is aligned through the indication of the dial indicator, the shaft hole of the pump supporting box is concentric with the axis of the crankshaft, then a positioning taper pin hole on the installation face of the pump supporting box and a machine body is drilled and hinged, a positioning pin is driven into the positioning position, and finally a connecting bolt is tightened according to the technical requirements to realize the installation of the pump supporting box. The method has the disadvantages of complicated adjustment and alignment process, scrap iron generated in the field drilling and reaming process, poor cleanliness, high labor cost due to the fact that additional personnel are needed to cooperate with the rotating crankshaft and the drilling and reaming positioning pin holes.
Therefore, there is still a need for a pump support box installation method and centering device that is simple to operate, accurate in centering, and low in labor cost.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a centering device and a centering method for a supporting box of a diesel engine pump. The centering device and the centering method are simple to operate, accurate in centering and low in labor cost.
Based on the purpose, the following technical scheme is adopted:
according to the present invention, there is provided a centering device for a supporting box of a diesel engine pump, comprising:
the inner cone is a cone formed by an upper circular section, a lower circular section and a tapered outer surface and is provided with a through hole penetrating through the upper circular section and the lower circular section;
the outer cone is a cylinder formed by an upper circular section, a lower circular section, a circumferential outer surface and a conical inner surface, and the conical inner surface is surrounded into an inner hole penetrating through the upper circular section and the lower circular section; the upper circular section and the lower circular section of the outer cone are provided with a plurality of grooves along the circumferential direction; the inner cone is inserted into the inner hole in a shape matching manner, the thickness of the inner cone is smaller than that of the outer cone, and the lower circular section of the inner cone is flush with the upper circular section of the outer cone;
the semicircular key is arranged on the tapered outer surface of the inner cone;
the centering bolt is arranged in the through hole of the inner cone and penetrates through the through hole of the inner cone;
the pressing plate is abutted against the lower circular section of the outer cone and provided with a circular hole, and the circular hole is aligned with the through hole of the inner cone;
a handwheel assembly including a screw and a handwheel attached at one end of the screw; the screw rod is inserted into the circular hole of the pressing plate and the through hole of the inner cone in sequence; and the screw rod is connected with the centering bolt in the through hole of the inner cone in a threaded fit manner.
Furthermore, the upper circular section of the inner cone and the lower circular section of the outer cone form a spigot, and the pressing plate presses against the spigot.
Further, the pressure plate is not in contact with the upper circular section of the inner cone, and the pressure plate is fixedly connected with the inner cone through a pin.
Furthermore, the outer surface of the circumference of the outer cone is symmetrically provided with dismounting threaded holes towards the direction of the circle center, and the dismounting threaded rod is in threaded fit with the dismounting threaded holes so as to realize the mounting and dismounting of the outer cone.
Furthermore, the grooves face the circle center and are uniformly arranged at equal intervals and equal angles; the plurality of grooves comprise a first groove and a second groove adjacent to the first groove; when the first groove is arranged on the upper circular section of the outer cone, the second groove is arranged on the lower circular section of the outer cone.
Further, the depth of the groove is smaller than the thickness of the outer cone.
Further, the first and second grooves are spaced 15 degrees apart.
Further, the lower circular cross section of the inner cone is provided with a recess.
According to the present invention, there is provided a centering method of the centering device as described above, comprising:
1) fixing a pump supporting box on a machine body installation surface, wherein a crankshaft is arranged in a shaft hole of the pump supporting box;
2) removing a plug at the end part of the crankshaft, and installing an inner cone in the diesel engine pump supporting box centering device at the end part of the crankshaft, wherein the lower circular section of the inner cone is contacted with the end part of the crankshaft, and the end part of the crankshaft is embedded into a recess of the lower circular section of the inner cone;
3) the centering bolt penetrates through the through hole of the inner cone and is screwed into the end part screw plug hole of the crankshaft, so that the center of the through hole of the inner cone is aligned with the center of the crankshaft; the inner cone is ensured to be concentric with the crankshaft after being installed.
4) Inserting the inner cone into the inner hole of the outer cone in a shape matching manner, wherein the thickness of the inner cone is smaller than that of the outer cone, and the lower circular section of the inner cone is flush with the upper circular section of the outer cone;
5) pressing a pressing plate against the lower circular section of the outer cone, and pressing the pressing plate against the spigot formed by the upper circular section of the inner cone and the lower circular section of the outer cone, wherein the pressing plate is provided with a circular hole which is aligned with the through hole of the inner cone;
6) the hand wheel is rotated to gradually screw the screw into the centering bolt, the outer cone gradually and elastically expands under the extrusion of the pressure plate until the outer cone is completely opened in the shaft hole of the pump supporting box, and at the moment, the shaft hole of the pump supporting box is concentric with the crankshaft.
Further, the centering method further comprises a step 7): and then checking that no gap exists between the pump supporting box and the engine body mounting surface, fastening all the bolts to the pump supporting box in a diagonal manner, dismounting the centering device of the diesel engine pump supporting box according to a reverse mounting sequence, and mounting the dismounting plug on the end part of the crankshaft.
Further, in step 5), the pins are then pressed into the press plates, aligning the pin holes on the inner cone to securely connect the press plates relative to the inner cone.
The invention has the beneficial effects that:
the centering device disclosed by the invention is simple in installation method, accurate and effective in centering, lower in labor cost in the operation process and good in centering repetition precision in the dismounting process.
The invention relates to an expanding tire type centering device which is in taper fit with an inner cone and an outer cone to realize accurate installation of a pump supporting box.
According to the centering device, the centering bolt is screwed into the screw blocking hole at the end part of the crankshaft and transits to the threaded rod in the hand wheel assembly, so that the reference consistency of the installation center of the centering device and the center of the crankshaft is ensured.
The outer cone of the invention is designed into an equidistant slotting and uniformly-stretching structure with uniform compression elasticity, and is matched with the inner cone to form a tyre expanding device, so that the automatic centering in the installation process of the pump supporting box is kept, and the repeated adjustment process is avoided.
The centering device of the invention realizes the circumferential positioning and torque transmission of the outer cone on the inner cone by the connection of the semicircular keys.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some implementation examples of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 illustrates a centering and mounting method of a diesel engine pump supporting box in the prior art;
FIG. 2 is a schematic view of a centering device according to an embodiment of the present invention;
FIG. 3 is a schematic view of an outer cone of the centering device according to the embodiment of the present invention, which is disassembled by using a disassembling screw;
FIG. 4 is a schematic view of an outer cone of an embodiment of the present invention;
FIG. 5 is a schematic view of another side of an outer cone according to an embodiment of the present invention;
FIG. 6 is a schematic view of the outer cone of FIG. 5 expanded along line A-A thereof in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of a centering device according to an embodiment of the present invention in use;
fig. 8 is a schematic view of a cross section taken along line a-a of fig. 7.
List of reference numerals
1' -a crankshaft; 2' -a pump support box; 3' -a magnetic meter stand; 4' -percentTable; 5' -installing a bolt; 6' -pump support box bolt holes; 7' -positioning taper pin holes; 8' -pump support box bolt holes; 9' -hoisting rings; 1-an inner cone; 2-an outer cone; 3-a woodruff bond; 4, pressing a plate; 5, centering a bolt; 6, a pin; 7 a hand wheel assembly; 8, disassembling and assembling a screw rod; 9-pump support box; 11-upper circular cross section of the inner cone; 12-lower circular cross section of inner cone; 13-tapered outer surface of inner cone; 14-a through hole; 15-recess; 21-upper circular cross section of outer cone; 22-lower circular cross section of the outer cone; 23-the circumferential outer surface of the outer cone; 24-a tapered inner surface of the outer cone; 25-inner hole; 26-spigot; 27-a first groove; 28-a second groove; hOuter cover-the thickness of the outer cone; hInner part-the thickness of the inner cone; 71-screw rod; 81-disassembling and assembling the threaded hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
The current mounting of a diesel engine pump support box is shown in figure 1.
Firstly, 4 positioning studs (mounting holes are used) are mounted on the mounting surface of the pump supporting box, then the pump supporting box 2 ' is lifted through the hanging ring 9 ', the pump supporting box 2 ' is moved to lean against the mounting surface, the 4 positioning studs are aligned and hung with the bolt holes 6 ' and 8 ' of the pump supporting box, then the bolts 5 ' are randomly and equidistantly mounted along the flange of the pump supporting box, then the 4 positioning studs are removed, and the rest bolts 5 ' are mounted, so that the box body is fixed on the mounting surface. Installing a magnetometer stand 3 'and a dial indicator 4' on the end face of the tail end of a crankshaft 1 ', enabling a pointer to point to the surface of a shaft hole of a pump supporting box, slowly rotating the crankshaft, recording readings of the dial indicator at clock positions of 3, 6, 9 and 12 points, slightly knocking the pump supporting box for multiple times by using a rubber hammer in an adjusting process until the readings meet technical requirements, ensuring that the shaft hole of the pump supporting box is concentric with the crankshaft, drilling and reaming positioning taper pin holes 7' on installation surfaces of the pump supporting box and a machine body on site, driving a taper pin, and finally tightening all bolts 5 'on a flange of the pump supporting box according to torque requirements to realize the installation of the pump supporting box 2'.
In the prior art, the centering installation method of the pump supporting box is complex in process, more in repeated adjustment work and higher in labor intensity of workers. The taper pin hole is drilled and reamed on site, scrap iron can be generated, and the cleanliness is poor. The processes of crankshaft rotation and on-site drilling and reaming need additional staff for cooperation, and the labor cost is increased.
The centering device of the diesel engine pump supporting box 9 shown in fig. 2-3 comprises an inner cone 1, an outer cone 2, a semicircular key 3, a centering bolt 5, a pressure plate 4 and a hand wheel assembly 7.
The inner cone 1 is a cone formed by an upper circular section 11, a lower circular section 12 and a taper outer surface 13, and the inner cone 1 is provided with a through hole 14 penetrating through the upper circular section 11 and the lower circular section 12; the semicircular key 3 is arranged on the tapered outer surface 13 of the inner cone;
as shown in fig. 4-6, the outer cone 2 is a cylinder formed by an upper circular section 21, a lower circular section 22, a circumferential outer surface 23 and a tapered inner surface 24, the tapered inner surface 24 enclosing an inner bore 25 passing through the upper circular section and the lower circular section; the upper circular section 21 and the lower circular section of the outer cone are provided with a plurality of grooves in a machining mode along the circumferential direction, and an expanding tire is formed when the outer cone is stressed; the inner cone 1 is inserted into the inner bore 25 in a form-fitting manner, the thickness H of the inner coneInner partLess than the thickness H of the outer coneOuter coverThe lower circular section 12 of the inner cone is flush with the upper circular section 21 of the outer cone. The grooves face the circle center and are uniformly arranged at equal intervals and equal angles; wherein, the plurality of grooves comprise a first groove 27 and a second groove 28 adjacent to the first groove 27; when the first groove 27 is provided in the upper circular section 21 of the outer cone, the second groove 28 is provided in the lower circular section of the outer cone. The depth of the groove is less than the thickness H of the outer coneOuter cover. Preferably, the first and second grooves are spaced 15 degrees apart, and the other grooves are all at the above-mentioned spacing angles.
The centering bolt 5 is arranged in the through hole 14 of the inner cone 1 and penetrates through the through hole 14 of the inner cone 1;
the pressing plate 4 is abutted against the lower circular section 22 of the outer cone, and the pressing plate 4 is provided with a circular hole which is aligned with the through hole 14 of the inner cone 1;
the hand wheel assembly 7 comprises a screw rod 71 and a hand wheel attached to one end of the screw rod 71; the screw rod 71 is inserted into the circular hole of the pressure plate 4 and the through hole 14 of the inner cone 1 in sequence; and the screw rod 71 is connected with the centering bolt 5 in the through hole 14 of the inner cone 1 in a threaded fit manner.
The upper circular section 11 of the inner cone and the lower circular section 22 of the outer cone form a spigot 26, against which spigot 26 the pressure plate 4 is pressed.
The pressure plate 4 is not in contact with the upper circular section 11 of the inner cone and the pressure plate 4 is fixedly connected with the inner cone 1 by the pin 6.
The dismounting screw holes are symmetrically formed in the circumferential outer surface 23 of the outer cone towards the circle center direction, and the dismounting screw 8 is in threaded fit with the dismounting screw hole 81 so as to realize the mounting and dismounting of the outer cone 2.
Specifically, when the outer cone 2 needs to be installed in the centering device, the dismounting screw 8 is inserted into the dismounting screw hole 81, wherein a manner that two dismounting screws 8 are symmetrically inserted is adopted in the present embodiment (as shown in fig. 3). The dismounting screw 8 is lifted up at the same time to realize the movement of the outer cone 2, and the outer cone is moved to the centering device and installed. When the outer cone 2 is disassembled, the disassembling screw 8 is lifted up after the disassembling screw 8 is assembled, and the separation of the outer cone 2 and the inner cone 1 is realized.
The lower circular cross-section of the inner cone 1 is provided with a recess 15.
The linkage of the outer cone 2 and the inner cone 1 is realized through the connection of the semicircular keys 3 arranged on the inner cone 1, the taper fit is not a key in the normal condition, and the circumferential positioning and the torque transmission of the outer cone 2 on the inner cone 1 are realized through the connection of the semicircular keys 3 according to the characteristics of the semicircular keys 3.
As shown in fig. 7 to 8, the centering method of the centering device of the present embodiment includes:
1) firstly, hoisting a pump supporting box 9, installing 4 positioning studs (by means of bolt installation holes) on the installation surface of the pump supporting box 9, hoisting the pump supporting box 9 by a hoisting ring, moving the pump supporting box 9 to lean against the installation surface, aligning and hanging the 4 positioning studs and the bolt holes of the pump supporting box 9, then installing bolts at random but at equal intervals along a flange of the pump supporting box 9, then removing the 4 positioning studs, and installing the rest bolts to fix a box body on the installation surface.
2) Removing the screw plug at the end part of the crankshaft, and installing the inner cone 1 in the centering device of the diesel engine pump supporting box 9 at the end part of the crankshaft, wherein the lower circular section 12 of the inner cone is contacted with the end part of the crankshaft, and the end part of the crankshaft is embedded into the recess 15 of the lower circular section 12 of the inner cone;
3) the centering bolt 5 is threaded into the end part screwed hole of the crankshaft through the through hole 14 of the inner cone 1, so that the center of the through hole 14 of the inner cone 1 is aligned with the center of the crankshaft; the inner cone 1 is ensured to be concentric with the crankshaft after being installed.
4) The inner cone 1 is inserted into the inner bore 25 of the outer cone 2 in a form-fitting manner, the thickness H of the inner coneInner partLess than the thickness H of the outer coneOuter coverThe lower circular section 12 of the inner cone is flush with the upper circular section 21 of the outer cone; the linkage of the outer cone 2 and the inner cone 1 is realized through the connection of a semicircular key 3 arranged on the inner cone 1;
5) pressing the pressing plate 4 against the lower circular section 22 of the outer cone, and pressing the pressing plate 4 against the spigot 26 formed by the upper circular section 11 of the inner cone and the lower circular section 22 of the outer cone, wherein the pressing plate 4 is provided with a circular hole which is aligned with the through hole 14 of the inner cone 1; the pins 6 are then pressed into the pressure plate 4 and aligned with the pin holes in the inner cone 1 to securely connect the pressure plate 4 relative to the inner cone 1.
6) The hand wheel is rotated to enable the screw to be gradually screwed into the centering bolt 5, the outer cone 2 gradually and elastically expands under the extrusion of the pressure plate 4 until the outer cone is completely expanded in the shaft hole of the pump supporting box 9, and the shaft hole of the pump supporting box 9 is concentric with the crankshaft.
7) And then checking that no gap exists between the pump supporting box 9 and the engine body mounting surface, fastening all bolts to the pump supporting box 9 in a diagonal manner, removing the centering device of the diesel engine pump supporting box 9 according to a reverse mounting sequence, and mounting the detachable plug on the end part of the crankshaft.
In another preferred embodiment, the outer cone 2 and the inner cone 1 can be replaced by an integrated tensioner with self-centering.
In another preferred embodiment, the material of construction of the inner and outer cones may be replaced by a wear resistant non-metallic material.
In another preferred embodiment, the centering bolt 5 and the threaded rod in the handle assembly can be replaced by a centering double-headed screw, and the uniform opening of the expanding tire is realized by adopting a nut pressing and tightening mode.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A centering device for a diesel engine pump support box, comprising:
the inner cone is a cone formed by an upper circular section, a lower circular section and a tapered outer surface, and is provided with a through hole penetrating through the upper circular section and the lower circular section;
the outer cone is a cylinder formed by an upper circular section, a lower circular section, a circumferential outer surface and a conical inner surface, and the conical inner surface is surrounded into an inner hole penetrating through the upper circular section and the lower circular section; a plurality of grooves are formed in the upper circular section and the lower circular section of the outer cone along the circumferential direction; the inner cone is inserted into the inner hole in a shape matching mode, the thickness of the inner cone is smaller than that of the outer cone, and the lower circular section of the inner cone is flush with the upper circular section of the outer cone;
the semicircular key is arranged on the tapered outer surface of the inner cone;
a centering bolt disposed in and passing through the through hole of the inner cone;
the pressing plate abuts against the lower circular section of the outer cone and is provided with a circular hole, and the circular hole is aligned with the through hole of the inner cone;
a handwheel assembly including a screw and a handwheel attached at one end of the screw; the screw rod is sequentially inserted into the circular hole of the pressing plate and the through hole of the inner cone; and the screw rod is connected with the centering bolt in the through hole of the inner cone in a threaded fit manner.
2. The centering device for a supporting box of a diesel engine pump as set forth in claim 1, wherein an upper circular section of an inner cone and a lower circular section of said outer cone form a spigot, said pressing plate being pressed against the spigot.
3. The centering device for a supporting box of a diesel engine pump as claimed in claim 1, wherein the presser plate is not in contact with the upper circular section of the inner cone, and the presser plate is fixedly connected to the inner cone by a pin.
4. The centering device for a pump support box of a diesel engine as claimed in claim 1, wherein the outer circumferential surface of the outer cone is symmetrically provided with dismounting threaded holes in the direction of the center of the circle, and the dismounting screw is in threaded engagement with the dismounting threaded holes to realize the mounting and dismounting of the outer cone.
5. The centering device for a supporting box of a diesel engine pump as claimed in claim 1, wherein said plurality of grooves are uniformly arranged toward the center of the circle, at equal intervals and at equal angles; the grooves comprise a first groove and a second groove adjacent to the first groove; when the first groove is arranged on the upper circular section of the outer cone, the second groove is arranged on the lower circular section of the outer cone.
6. The centering device for a diesel pump support box according to claim 5, wherein the depth of said groove is less than the thickness of said outer cone.
7. The centering device for a supporting box of a diesel engine pump as set forth in claim 1, wherein a lower circular section of said inner cone is provided with a recess.
8. A centering method of the centering device as claimed in any one of claims 1 to 7, comprising:
1) fixing a pump supporting box on a machine body installation surface, wherein a crankshaft is arranged in a shaft hole of the pump supporting box;
2) removing a plug at the end part of the crankshaft, and installing an inner cone in the diesel engine pump supporting box centering device at the end part of the crankshaft, wherein the lower circular section of the inner cone is in contact with the end part of the crankshaft, and the end part of the crankshaft is embedded into a recess of the lower circular section of the inner cone;
3) the centering bolt penetrates through the through hole of the inner cone and is screwed into the end part screw plug hole of the crankshaft, so that the center of the through hole of the inner cone is aligned with the center of the crankshaft;
4) inserting the inner cone into the inner hole of the outer cone in a shape matching manner, wherein the thickness of the inner cone is smaller than that of the outer cone, and the lower circular section of the inner cone is flush with the upper circular section of the outer cone;
5) pressing a pressing plate against the lower circular section of the outer cone, and pressing the pressing plate against the spigot formed by the upper circular section of the inner cone and the lower circular section of the outer cone, wherein the pressing plate is provided with a circular hole which is aligned with the through hole of the inner cone;
6) the hand wheel is rotated to gradually screw the screw into the centering bolt, the outer cone gradually and elastically expands under the extrusion of the pressure plate until the outer cone is completely opened in the shaft hole of the pump supporting box, and at the moment, the shaft hole of the pump supporting box is concentric with the crankshaft.
9. The centering method of claim 1, further comprising step 7): and then checking that no gap exists between the pump supporting box and the engine body mounting surface, fastening all the bolts to the pump supporting box in a diagonal manner, dismounting the centering device of the diesel engine pump supporting box according to a reverse mounting sequence, and mounting the dismounting plug on the end part of the crankshaft.
10. The centering method of claim 7, wherein in step 5), the pin is then pressed into the pressure plate to align the pin holes on the inner cone to securely connect the pressure plate relative to the inner cone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911114035.7A CN110788795A (en) | 2019-11-14 | 2019-11-14 | Centering device and centering method for diesel engine pump supporting box |
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| CN201911114035.7A CN110788795A (en) | 2019-11-14 | 2019-11-14 | Centering device and centering method for diesel engine pump supporting box |
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| CN113664444A (en) * | 2021-08-27 | 2021-11-19 | 大连船用柴油机有限公司 | Welding and positioning method for engine base flange of large-scale low-speed marine diesel engine |
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| 全国造价工程师职业资格考试培训教材编审委员会: "《建设工程技术与计量（安装工程）》", 30 June 2019 * |
| 张晓桂: "《机械基础》", 31 July 2014 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199237A (en) * | 2021-04-21 | 2021-08-03 | 中国航发贵州黎阳航空动力有限公司 | Method for assembling low-pressure turbine guider of aircraft engine and coaxiality auxiliary control device |
| CN113664444A (en) * | 2021-08-27 | 2021-11-19 | 大连船用柴油机有限公司 | Welding and positioning method for engine base flange of large-scale low-speed marine diesel engine |
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