KR20150025157A - Assembling apparatus of shaft of pump - Google Patents

Assembling apparatus of shaft of pump Download PDF

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Publication number
KR20150025157A
KR20150025157A KR20130102425A KR20130102425A KR20150025157A KR 20150025157 A KR20150025157 A KR 20150025157A KR 20130102425 A KR20130102425 A KR 20130102425A KR 20130102425 A KR20130102425 A KR 20130102425A KR 20150025157 A KR20150025157 A KR 20150025157A
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KR
South Korea
Prior art keywords
shaft
press
jig
bearing
sealing device
Prior art date
Application number
KR20130102425A
Other languages
Korean (ko)
Inventor
이재규
Original Assignee
현대제철 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR20130102425A priority Critical patent/KR20150025157A/en
Publication of KR20150025157A publication Critical patent/KR20150025157A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

An invention relating to a shaft assembling device of a water pump is disclosed. A shaft assembly apparatus for a water pump of the present invention comprises: a first jig for press-fitting a first bearing and a sealing device into a shaft; And a second jig for press-fitting the second bearing into the shaft, the first jig including: a first press-fitting pipe portion into which one side of the shaft is inserted and which is assembled to press the first bearing on the shaft; A connecting tube portion which is connected to the first press-fitting tube portion, into which the shaft is inserted and which presses the rotating portion of the sealing device; And a second press-fitting pipe portion which is connected to the connecting pipe portion and into which the shaft is inserted and which presses the fixed portion of the sealing device, the second jig is inserted into the other side of the shaft and presses the second bearing on the other side of the shaft .

Description

ASSEMBLING APPARATUS OF SHAFT OF PUMP [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft assembly apparatus for a water pump, and more particularly, to a shaft assembly apparatus for a water pump capable of preventing a sealing apparatus from being damaged or detached when assembled to a shaft.

Generally, vehicles such as trucks and locomotives are operated at steel mills. The vehicle is moved as the engine is driven. The engine is supplied with cooling water by a cooling water pump. The coolant pump has an impeller coupled to the shaft. As the impeller rotates, the coolant is pumped.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 2011-0063115 (published on June 10, 2011, entitled "Vehicle Water Pump").

It is an object of the present invention to provide a shaft assembling apparatus for a water pump which can prevent a sealing device from being damaged or detached when assembled to a shaft.

A shaft assembly apparatus for a water pump according to the present invention comprises: a first jig for press-fitting a first bearing and a sealing device into a shaft; And a second jig for press-fitting the second bearing into the shaft, wherein the first jig includes: a first press-fitting pipe portion to which one side of the shaft is inserted and to assemble the shaft to press the first bearing; A connecting tube portion connected to the first press-fitting tube portion, the shaft being inserted, and pressing the rotating portion of the sealing device; And a second press-fitting pipe portion connected to the connection pipe portion, for inserting the shaft and pressing the fixed portion of the sealing device, wherein the other end of the shaft is inserted into the second jig, And the second bearing is pressed and assembled.

And the second press-fitting tube portion can simultaneously press the fixing portion when the connecting tube portion presses the rotating portion.

The second jig may be formed with a coupling portion to be coupled to the first press-fitting pipe portion.

According to the present invention, it is possible to prevent the sealing device from being damaged or detached when assembled to the shaft.

1 is a cross-sectional view illustrating a shaft assembly apparatus for a water pump according to an embodiment of the present invention.
2 is an exploded perspective view showing an assembly structure of a shaft of a water pump according to an embodiment of the present invention.
3 is an exploded perspective view showing a sealing device in a water pump according to an embodiment of the present invention.
4 is a perspective view showing a first jig and a second jig for assembling the shaft in the water pump according to the embodiment of the present invention.
5 is a front view showing a state in which a first bearing is assembled to a shaft using a first jig according to an embodiment of the present invention.
6 is a front view showing a state in which a sealing device is assembled to a shaft using a first jig according to an embodiment of the present invention.
7 is a front view showing a state in which a second bearing is assembled to a shaft using a second jig according to an embodiment of the present invention.

Hereinafter, an embodiment of an apparatus for assembling a shaft of a water pump according to the present invention will be described with reference to the accompanying drawings. In the course of describing the shaft assembling apparatus of the water pump, the thicknesses of the lines and the sizes of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

2 is an exploded perspective view illustrating an assembly structure of a shaft of a water pump according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of the water pump, Is an exploded perspective view showing a sealing device in a water pump according to an embodiment of the present invention.

1 to 3, a water pump according to an embodiment of the present invention is driven by receiving power from an engine via a belt. The water pump includes a casing (10), an impeller (20), and a shaft (30).

At one side of the casing (10) is formed a pumping chamber (11) in which the impeller (20) is accommodated. The pumping chamber is provided with an inlet port 11a through which cooling water flows and a discharge port 11b through which cooling water is discharged. The inlet 11a may be formed at the center of the pumping chamber 11 and the outlet 11b may be formed at the periphery of the pumping chamber 11.

An installation space 13 is formed along the longitudinal direction of the casing 10 and a shaft 30 is provided in the installation space 13. [ The shaft 30 is rotatably coupled to the inside of the casing 10 by a first bearing 41 and a second bearing. A pulley 17 is coupled to the other side of the shaft 30, and a belt (not shown) is connected to the pulley 17. As the pulley 17 is rotated, the shaft 30 and the impeller 20 are rotated.

A sealing device (50) is installed between the pumping chamber (11) and the installation space (13). The sealing device 50 prevents the cooling water of the pumping chamber 11 from flowing into the installation space 13. At this time, a fixing rib 15 is formed between the pumping chamber 11 and the installation space 13 so that the sealing device 50 is inserted. The fixed rib 15 is formed in an annular shape.

A plurality of stepped portions 31, 32, 33, 34, and 35 are formed in the shaft 30 so that the first bearing 41, the second bearing 42, and the sealing device 50 are inserted. The plurality of stepped portions 31, 32, 33, 34, and 35 are formed such that the diameter gradually decreases toward one side of the shaft 30.

The sealing device 50 includes a fixing portion 51, a rotating portion 53, and an elastic member 55.

The fixing portion 51 includes a fixing ring 51a to be pressed into the fixing rib 15 and a flange portion 51b formed around the fixing ring 51a in the circumferential direction. When the fixing ring 51a is pressed into the fixing rib 15, the flange portion 51b is brought into close contact with the periphery of the fixing rib 15. A coupling hole 51c is formed at the center of the fixed ring 51a so that the rotation portion 53 is engaged.

A press-fit hole 53a is formed in the central portion of the rotary part 53 so that one side of the shaft 30 is press-fitted. The rotating portion 53 is rotated together with the shaft 30. A boss 53b protrudes from the rotation part 53 to be inserted into the engagement hole 51c of the stationary ring 51a.

The elastic member 55 is inserted into the boss 53b of the rotation part 53. [ The elastic member 55 serves to absorb the axial clearance of the shaft 30.

A shaft 30 to which the first bearing 41, the second bearing 42 and the sealing device 50 are assembled is installed in the casing 10. [ The impeller 20 is installed at the end of the shaft 30 after the shaft 30 is installed in the casing 10. [ Hereinafter, a shaft assembling apparatus for a water pump will be described.

4 is a perspective view showing a first jig and a second jig for assembling the shaft in the water pump according to the embodiment of the present invention.

Referring to FIG. 4, the shaft assembly apparatus of the water pump includes a first jig 60 and a second jig 70.

The first jig 60 is formed into a generally cylindrical shape. The first jig 60 includes a first press-fitting tube portion 61, a connecting tube portion 63, and a second press-fitting tube portion 65. The first press-fitting tube portion 61, the connecting tube portion 63 and the second press-fitting tube portion 65 are arranged in a line.

One side of the shaft 30 is inserted into the first press-fitting pipe portion 61 and the first bearing 41 is pressurized so that the first bearing 21 is press-fitted into the shaft 30. The inner diameter of the first press-fitting pipe portion 61 is formed to a size such that all of the step portions 31, 32, 33 formed on one side of the shaft 30 can be inserted. The first press-fitting pipe portion (61) can press the first bearing (41) in a state where one side of the shaft (30) is inserted.

The connection tube portion 63 is formed to protrude inward of the first jig 60. The connecting tube portion 63 is connected to the first press-fitting tube portion 61. A shaft (30) is inserted into the connecting tube portion (63). The connecting tube portion 63 presses the rotating portion 53 of the sealing device 50. The inner diameter of the connecting tube portion 63 is formed such that the one step portion 34 of the shaft 30 is inserted but the rotating portion 53 of the sealing device 50 is not inserted.

The second press-fitting tube portion (65) is connected to the connecting tube portion (63). The shaft 30 is inserted into the second press-fitting pipe portion 65. The second press-fitting tube portion (65) presses the fixing portion (51) of the sealing device (50). The inner diameter of the second press-fitting pipe portion 65 is formed to a size such that the rotary portion 53 of the sealing device 50 is inserted but the fixing portion 51 of the sealing device 50 is not inserted. The length of the second press-fitting pipe portion 65 is formed to be equal to the height at which the rotary portion 53 protrudes from the fixing portion 51.

The inner diameter of the second press-fitting pipe portion (65) is formed smaller than the inner diameter of the first press-fitting pipe portion (61). The second pressurizing tube portion 65 presses the fixing portion 51 of the sealing device 50 and the connecting tube portion 63 presses the rotating portion 53 of the sealing device 50. Further, when the connecting tube portion 63 presses the rotary portion 53, the second press-fitting tube portion 65 presses the fixing portion 51 at the same time. Therefore, when the sealing device 50 is assembled to the shaft 30, the fixing portion 51 and the rotating portion 53 are not separated from each other. It is also possible to prevent the sealing device 50 from being damaged or deformed when assembled to the shaft 30. [ In addition, it is possible to prevent the elastic member 55 from being deformed abnormally.

When the first bearing 41 is assembled to the shaft 30, the first jig 60 is inserted into the shaft 30 such that the side of the first pressurizing tube portion 61 is opposed to the first bearing 41. When the sealing device 50 is assembled to the shaft 30, the first jig 60 is inserted into the shaft 30 so that the side of the second press-fitting pipe portion 65 is opposed to the sealing device 50. The first jig 60 is inserted into the shaft 30 in the opposite direction to each other when the first bearing 41 is assembled and the sealing device 50 is assembled. The first bearing 41 and the sealing device 50 can be assembled as the first jig 60 is inserted into the shaft 30 so that the number of jigs for assembling the shaft 30 can be reduced .

An insertion groove 73 is formed in the second jig 70 so that the other side of the shaft 30 is inserted. The second jig (70) presses the second bearing (42) on the other side of the shaft (30). The inner diameter of the second jig (70) is formed to be larger than the other stepped portion (35) of the shaft (30).

The second jig (70) is formed with an engaging portion (75) to be engaged with the first press-fitting tube portion (61). When the first jig 60 and the second jig 70 are not used, the engaging portion 75 of the second jig 70 can be coupled to the first press-fitting tube portion 61 of the first jig 60 have. Therefore, it is possible to prevent any one of the first jig 60 and the second jig 70 from being lost.

The process of assembling a shaft of a water pump according to an embodiment of the present invention will be described.

5 is a front view showing a state where a first bearing is assembled to a shaft using a first jig according to an embodiment of the present invention.

Referring to FIG. 5, a hydraulic jack 85 is installed below the assembly chamber 80. The hydraulic jack 85 moves the pressing rod 86 up and down by the hydraulic pressure.

The first bearing 41 is inserted into one side of the shaft 30 and the first press fitting tube portion 61 of the first jig 60 is inserted into one side of the shaft 30. [ The diameter of the first bearing 41 corresponds to one step 31. A plurality of stepped portions (31, 32, 33) are inserted into the first press-fitting pipe portion (61).

The second press fitting tube portion 65 of the first jig 60 is supported on the upper side of the assembly chamber 80 and the other step portion 35 of the shaft 30 is supported by the pressing rod 86 of the hydraulic jack 85 . As the fluid is supplied to the hydraulic jack 85, the pressing rod 86 rises. The first bearing 41 is press-fitted into the one step portion 31 as the pressing rod 86 is lifted. At this time, since the shaft 30 is lifted and the first jig 60 is supported on the upper side of the assembly chamber 80, the first bearing 41 is supported by the first press-fitting tube portion 61 of the first jig 60 . When the first bearing 41 is fully press-fitted into the stepped portion 31 of the shaft 30, the pressing rod 86 is lowered.

The first bearing 41 is press-fitted into the one step portion 31 of the shaft 30 by the first press fitting tube portion 61 of the first jig 60. Thus,

6 is a front view showing a state in which a sealing device is assembled to a shaft using a first jig according to an embodiment of the present invention.

6, when the sealing device 50 is assembled to one side of the shaft 30, the first jig 60 is mounted on the shaft 30 in a direction opposite to the direction in which the first bearing 41 is assembled, (30). That is, the sealing device 50 is made to correspond to one side of the shaft 30 and the second press-fitting pipe portion 65 of the first jig 60 is made to correspond to the sealing device 50. At this time, the rotating part 53 of the sealing device 50 is in contact with the connecting tube part 63, and the fixed part 51 of the sealing device 50 is in contact with the second press-fitting tube part 65.

The first press fitting tube portion 61 of the first jig 60 is supported on the upper side of the assembly chamber 80 and the other step portion 35 of the shaft 30 is supported by the pressing rod 86 of the hydraulic jack 85 . As the fluid is supplied to the hydraulic jack 85, the pressing rod 86 rises. Since the rotating portion 53 of the sealing device 50 is in contact with the connecting tube portion 63 and the fixing portion 51 of the sealing device 50 is in contact with the second pressurizing tube portion 65, The rotating portion 53 and the fixing portion 51 of the first pressing portion 51 can be simultaneously pressed by the connecting tube portion 63 and the second pressing tube portion 65. [ Therefore, when the sealing device 50 is press-fitted into the shaft 30, the rotation part 53 of the sealing device 50 and the fixing part 51 can be prevented from being separated from each other.

Thus, the sealing device 50 is press-fitted into one step portion 34 of the shaft 30 by the second press-fitting pipe portion 65 of the first jig 60. [

7 is a front view showing a state in which a second bearing is assembled to a shaft using a second jig according to an embodiment of the present invention.

Referring to FIG. 7, a second bearing 42 is inserted into the other side of the shaft 30, and the second jig 70 is brought into contact with the second bearing 42. The second bearing 42 corresponds to the stepped portion 35 formed on the other side of the shaft 30.

The upper end of the shaft 30 is supported on the upper side of the assembly chamber 80 and the engagement portion 75 of the second jig 70 is supported by the pressing rod 86 of the hydraulic jack 85. As the fluid is supplied to the hydraulic jack 85, the pressing rod 86 rises. The second bearing 42 is press-fitted into the other step portion 35 of the shaft 30 as the pressing rod 86 is lifted. At this time, the shaft 30 is raised and the upper end of the shaft 30 is supported on the upper side of the assembling chamber 80, so that the second bearing 42 is pressed by the second jig 70. When the second bearing 42 is fully press-fitted into the stepped portion 35 of the shaft 30, the pressing rod 86 is lowered.

Thus, the second bearing 42 is press-fitted into the other step 35 of the shaft 30 by the second jig 70.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

10: casing 11: pumping chamber
11a: Inlet port 11b: Outlet port
13: installation space 15: fixed rib
17: pulley 20: impeller
30: shafts 31, 32, 33, 34, 35:
41: first bearing 42: second bearing
50: sealing device 51:
51a: fixed ring 51b: flange portion
51c: coupling hole 53:
53a: press-fit hole 53b: boss
55: elastic member 60: first jig
61: first press-fitting pipe portion 63: connecting pipe portion
65: second press fitting portion 70: second jig
73: insertion groove 75: engaging portion
80: Assembly chamber 85: Hydraulic jack
85: pressing rod

Claims (3)

A first jig for press-fitting the first bearing and the sealing device into the shaft; And
And a second jig for press-fitting the second bearing into the shaft,
The first jig includes:
A first press-fitting pipe portion into which one side of the shaft is inserted and which is assembled to press the first bearing on the shaft;
A connecting tube portion connected to the first press-fitting tube portion, the shaft being inserted, and pressing the rotating portion of the sealing device; And
And a second press-fitting pipe portion connected to the connection pipe portion, into which the shaft is inserted and which presses the fixed portion of the sealing device,
And the second jig is inserted into the other side of the shaft, and the second bearing is pressed to the other side of the shaft to assemble the shaft.
The method according to claim 1,
And the second press-fitting pipe portion simultaneously presses the fixed portion when the connecting tube portion presses the rotating portion.
3. The method of claim 2,
And an engaging portion is formed on the second jig to engage with the first press-fitting pipe portion.
KR20130102425A 2013-08-28 2013-08-28 Assembling apparatus of shaft of pump KR20150025157A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108312104A (en) * 2018-02-26 2018-07-24 湖南文理学院 A kind of mounting device and installation method of automobile radiators sealing strip
CN112139777A (en) * 2020-08-11 2020-12-29 利辛县泓坤美思家具科技有限公司 Continuous compression fittings of pipe end nut for steelframe production
CN112743319A (en) * 2020-12-15 2021-05-04 安徽宝隽机车部件有限公司 Pump head pressure equipment adjusting device
KR20210122530A (en) * 2020-04-01 2021-10-12 주식회사 링크라인 Assemble and dissemble equipment of the shaft-crank assembly
CN115557086A (en) * 2022-09-29 2023-01-03 浙江锦盛新材料股份有限公司 Emulsion pump, emulsion pump pipe inserting equipment and pipe inserting process
KR20230001896A (en) * 2021-06-29 2023-01-05 주식회사 센트랄 Apparatus for bush indenting

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108312104A (en) * 2018-02-26 2018-07-24 湖南文理学院 A kind of mounting device and installation method of automobile radiators sealing strip
CN108312104B (en) * 2018-02-26 2024-03-12 湖南文理学院 Installation device and installation method for sealing strip of automobile radiator
KR20210122530A (en) * 2020-04-01 2021-10-12 주식회사 링크라인 Assemble and dissemble equipment of the shaft-crank assembly
CN112139777A (en) * 2020-08-11 2020-12-29 利辛县泓坤美思家具科技有限公司 Continuous compression fittings of pipe end nut for steelframe production
CN112743319A (en) * 2020-12-15 2021-05-04 安徽宝隽机车部件有限公司 Pump head pressure equipment adjusting device
KR20230001896A (en) * 2021-06-29 2023-01-05 주식회사 센트랄 Apparatus for bush indenting
CN115557086A (en) * 2022-09-29 2023-01-03 浙江锦盛新材料股份有限公司 Emulsion pump, emulsion pump pipe inserting equipment and pipe inserting process
CN115557086B (en) * 2022-09-29 2024-03-12 浙江锦盛新材料股份有限公司 Emulsion pump, emulsion pump intubation equipment and intubation technology

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