KR200482285Y1 - tirhtener device of radial piston type hydraulic apparatus - Google Patents

tirhtener device of radial piston type hydraulic apparatus Download PDF

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Publication number
KR200482285Y1
KR200482285Y1 KR2020150004545U KR20150004545U KR200482285Y1 KR 200482285 Y1 KR200482285 Y1 KR 200482285Y1 KR 2020150004545 U KR2020150004545 U KR 2020150004545U KR 20150004545 U KR20150004545 U KR 20150004545U KR 200482285 Y1 KR200482285 Y1 KR 200482285Y1
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KR
South Korea
Prior art keywords
ring
radial piston
upper plate
type hydraulic
piston type
Prior art date
Application number
KR2020150004545U
Other languages
Korean (ko)
Inventor
김동환
한진희
Original Assignee
훌루테크 주식회사
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Priority to KR2020150004545U priority Critical patent/KR200482285Y1/en
Application granted granted Critical
Publication of KR200482285Y1 publication Critical patent/KR200482285Y1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0403—Details, component parts specially adapted of such engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Support Of The Bearing (AREA)

Abstract

A lower ring having a ring-shaped structure in which a plurality of mounting protrusions, which are mounted on a surface of a ring nut in a bottom surface thereof, are protruded and opened so that a main shaft passes through the inner ring; A plate-shaped upper plate positioned to be spaced apart from the upper side of the lower ring; A lower end fixedly installed upright along the upper surface of the lower ring and having an upper end fixedly installed around the lower surface of the upper plate; And a wrench adapter fixed to a center portion of an upper surface of the upper plate and coupled to a head of a torque wrench to provide an operation force, It is possible to improve the lifetime of the roller bearing and improve the operating precision by making it possible to control the preload of the roller bearings.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a radial piston type hydraulic apparatus for a radial piston type hydraulic machine,

The present invention relates to a preload control device, and more particularly, to a preload control device for a roller bearing used in a large hydraulic device such as a radial piston type hydraulic device, And more particularly to a preload control device for a radial piston type hydraulic machine according to a new type.

In general, a hydraulic motor in a hydraulic device is a device that receives fluid energy of a hydraulic fluid to achieve continuous rotation of the main shaft, and is advantageous in that it can generate a large torque and power as compared with a compact and lightweight.

Among these hydraulic motors, the piston-type hydraulic motor is divided into an axial piston motor and a radial piston motor. In the case of the radial piston motor, the piston and the cylinder are arranged radially, And the main shaft is rotated by the linear reciprocating motion of the piston by the provision of the piston. In this regard, in the related arts, it is disclosed in the patent publications 10-2012-0102708, 10-2001-031930, 10-2007-0116627 And the like.

In the case of the conventional radial piston type hydraulic motor, the main shaft is rotatably supported by a tapered roller bearing, and the roller bearing is supported by a roller bearing So that the lifetime can be improved and the operation precision can be improved.

Here, the preloading method for the roller bearings may be performed by inserting a shim according to a measurement value of a normally installed bearing gap, adjusting a preload of the outer ring and the inner ring of the roller bearing, And a pre-pressurization is performed by pushing the outer ring by a fastening force of a ring nut.

However, since the preload method for the roller bearing of the conventional radial piston type hydraulic motor described above is difficult to precisely measure, the preload can not be precisely controlled.

That is, in the case of inserting the shim according to the measured value of the assembled bearing gap, not only the shim for each thickness must be prepared at all times, but the gap is manually measured, It is difficult to precisely adjust the fastening force of the ring nut in consideration of the fact that the size of the ring nut is very large.

Accordingly, the conventional radial piston type hydraulic motor has a problem that the life of the roller bearing is reduced because the preload of the roller bearing can not be precisely adjusted, and the problem that the radial piston type hydraulic motor can not be precisely operated have.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a rolling bearing capable of controlling a preload of a roller bearing used in a large hydraulic device such as a radial piston type hydraulic device, And to provide a preload adjusting device for a radial piston type hydraulic machine according to a new type that can improve life span and operation precision of a hydraulic pump.

According to the present invention, a plurality of pistons are radially arranged around a main shaft, and the main shaft is supported to be supported by a roller bearing Wherein the roller bearing is configured such that a preload is adjusted in accordance with a rotation operation of a ring nut, wherein a plurality of mounting protrusions, which are recessed and mounted on a surface of the ring nut, are protruded from a bottom surface of the radial piston, A lower ring formed in a ring shape having a structure in which a shaft is opened to pass; A plate-shaped upper plate positioned to be spaced apart from the upper side of the lower ring; A lower end fixedly installed upright along the upper surface of the lower ring and having an upper end fixedly installed around the lower surface of the upper plate; And a wrench adapter fixed to a center portion of the upper surface of the upper plate and coupled to the head of the torque wrench to provide operation force.

Here, the length of each connecting bar is determined such that the upper plate is spaced farther from the lower ring than the protruding distance of the main shaft.

The wrench adapter may be formed in a bolt shape so as to vertically penetrate the center of the upper plate and have an upper body formed with a head engaging groove formed therein so as to engage with the head of the torque wrench, And a fixing nut that is screwed on a lower end of the adapter body which penetrates the upper plate while being positioned on the bottom surface to prevent the adapter body from being rotated.

As described above, the preload adjusting device for a radial piston type hydraulic machine according to the present invention has a structure in which a torque wrench can be used, so that it is possible to precisely control the preload of a roller bearing of a radial piston type hydraulic motor .

Particularly, the preload adjusting device for a radial piston type hydraulic machine of the present invention also has an effect of being easy to maintain continuously since the preload control for the roller bearings can be carried out temporally.

Brief Description of the Drawings Fig. 1 is a state diagram showing a recessed portion for explaining the structure of a general radial piston type hydraulic motor.
Fig. 2 is a sectional view for explaining a preload adjusting device for a radial piston type hydraulic machine according to an embodiment of the present invention
3 is a state diagram for explaining the mounting state of the preload adjusting device for a radial piston type hydraulic machine according to the embodiment of the present invention
Fig. 4 is an enlarged view of the " A &

Hereinafter, a preferred embodiment of a radial piston type hydraulic pressure control apparatus according to the present invention will be described with reference to FIGS. 1 to 4 attached hereto.

Prior to the description of the embodiments, the radial piston type hydraulic device in which the preload is adjusted by the preload adjusting device for a radial piston type hydraulic pressure machine of the present invention is a radial piston type hydraulic motor, and the structure of such a radial piston type hydraulic motor Will be described with reference to FIG. 1 attached hereto.

1, a general radial piston type hydraulic motor includes a plurality of pistons (not shown) centered on a main shaft 20 vertically passing through a main body housing 10, And the main shaft 20 is supported by the roller bearings 30 so that the roller bearings 30 are adjusted in such a manner that the preload is adjusted according to the rotation operation of the ring nut 40 . The roller bearing 30 is a tapered roller bearing in which the outer ring 32 protrudes outward (upward in the drawing) as compared with the inner ring 31.

In addition, in the following description, the description of the position and direction of each component will be made with reference to the direction and position shown in the drawings.

2 is a cross-sectional view for explaining a preload adjusting device for a radial piston type hydraulic machine according to an embodiment of the present invention. FIG. 3 is a cross sectional view of a radial piston type hydraulic pressure adjusting device for a radial piston type hydraulic machine according to an embodiment of the present invention. Fig. 7 is a state diagram for explaining the mounting state.

As shown in these drawings, a radial piston type hydraulic pressure control device (hereinafter referred to as a "preload control device") according to an embodiment of the present invention mainly includes a lower ring 100 and an upper plate 200, A bar 300, and a wrench adapter 400.

This will be explained in more detail for each configuration.

First, the lower ring 100 is coupled to the ring nut 40 and transmits the operation force to the ring nut 40.

The lower ring 100 is formed in a ring shape having a structure in which a main shaft 20 constituting a radial piston type hydraulic motor is inwardly opened to pass therethrough and is inserted into the bottom surface of the ring nut 40 A plurality of mounting protrusions 110 are formed to protrude.

At this time, mounting grooves 41 for mounting the mounting protrusions 110 are formed on the surface of the ring nut 40.

Next, the upper plate 200 is rotated to receive the rotating operation force by the operator, and the lower ring 100 is rotated.

The upper plate 200 is formed in a flat plate shape and is spaced apart from the upper side of the lower ring 100.

In addition, a fastening hole 210 is formed through the central portion of the upper plate 200. At this time, the fastening hole 210 is a portion used for fastening and fixing the wrench adapter 400 to be described later.

The connection bar 300 connects the upper plate 200 and the lower ring 100 to transmit the rotary operation force to the lower ring 100.

The lower end of the connection bar 300 is fixedly installed along the upper surface of the lower ring 100 in a vertical position and the upper end of the connection bar 300 is fixed along the lower surface of the upper plate 200.

At this time, the lower end of the connecting bar 300, the upper face of the lower ring 100, the upper end of the connecting bar 300, and the lower face of the upper plate 200 are engaged with each other in an engaging manner, So that they can be combined with each other. Of course, although not shown, the coupling between the connecting bar 300 and the lower ring 100, or between the connecting bar 300 and the upper plate 200 may be threaded, Or may be fixed in a manner using a separate fixing member (not shown).

In particular, the length of the connection bar 300 is designed in consideration of the protruding distance of the main shaft 20. [ That is, the length of each connecting bar 300 is determined so that the upper plate 200 is spaced farther from the lower ring 100 than the protruding distance of the main shaft 20, So that the upper plate 200 can be prevented from interfering with or bumping against the main shaft 20 when the preload control device is mounted on the radial piston type hydraulic motor.

Next, the wrench adapter 400 is a portion for allowing the upper plate 200 to receive the operation force of the torque wrench 50.

The wrench adapter 400 is fixed to a central portion of the upper surface of the upper plate 200 and is coupled to the head 51 of the torque wrench 50 to receive operating force. For this purpose, The wrench adapter 400 described above comprises the adapter body 410 and the fixing nut 420.

The adapter body 410 is formed in a bolt shape so as to vertically penetrate the fastening hole 210 of the upper plate 200 so that the head 51 of the torque wrench 50 is coupled to the upper surface of the adapter body 410. [ And a head coupling groove 411 is formed by recessing.

The fixing nut 420 is screwed to the lower end of the adapter body 410 passing through the upper plate 200 while being positioned on the bottom surface of the upper plate 200. That is, it is possible to prevent the adapter body 410 from being unwantedly rotated from the upper plate 200 by the fixing nut 420.

At this time, the torque wrench (50) coupled to the adapter body (410) is configured to be able to set the torque to be provided, thereby allowing the operator to tighten the ring nut (40) only with a preset torque.

Hereinafter, a process of adjusting the preload of the roller bearing 30 of the radial piston type hydraulic motor using the preload adjusting device according to the embodiment of the present invention described above will be described in more detail.

1, a main shaft 20, a roller bearing 30 and a ring nut 40 are assembled to a main body housing 10 of a radial piston type hydraulic motor as shown in FIG. 1, 30, the lower ring 100 of the preload control device according to the embodiment of the present invention is engaged with the ring nut 40. In this case,

3 and 4, the lower ring 100 of the preload control device according to the embodiment of the present invention is brought into close contact with the surface of the ring nut 40, The mounting projection 110 formed on the ring nut 40 is mounted in the mounting groove 41 formed on the surface of the ring nut 40.

In this state, after the head 51 of the torque wrench 50 is inserted into the head coupling groove 411 of the adapter body 410 of the wrench adapter 400 of the preload control device according to the embodiment of the present invention, (50) to rotate the wrench adapter (400).

When the wrench adapter 400 is rotated according to the operation of the torque wrench 50, the upper plate 200 is rotated by the rotation of the wrench adapter 400, The rotational force is provided to the lower ring 100 through each connecting bar 300 and then provided to the ring nut 40 through the mounting protrusion 110 of the lower ring 100. As the ring nut 40 is rotated and gradually tightened, the ring nut 40 gradually pushes the outer ring 32 of the roller bearing 30 by the gradual fastening of the ring nut 40, .

At this time, in the case of the torque wrench (50), it is possible to precisely adjust the preload applied to the roller bearing (30) in consideration of the setting of the torque provided according to the operation.

As a result, the roller bearing 30 of the radial piston type hydraulic motor through the above-described process can be precisely controlled by a preload control device such as the embodiment of the present invention, Pre-pressurization can be carried out on-the-fly, which has the advantage of easy maintenance.

On the other hand, the preload control device of the present invention is not limited to being used only for controlling the preload to the roller bearings of the radial piston type hydraulic motor.

That is, the preload control device of the present invention is a useful design applicable to various types of hydraulic devices configured to be able to control the preload to the conical roller bearings by rotating the ring nut.

100. Lower ring 110. Mounting projection
200. Upper plate 210. Fastener
300. Connection bar 400. Wrench adapter
410. Adapter body 411. Head coupling groove
420. Fixing nut

Claims (3)

A plurality of pistons are arranged radially around a main shaft 20 and the main shaft 20 is configured to be supported for rotation by a roller bearing 30, The hydraulic pressure applied to the radial piston of the radial piston,
A plurality of mounting protrusions 110 protruding from and mounted on the surface of the ring nut 40 are formed on the bottom surface of the ring nut 40, and a ring-shaped lower ring 100 having a structure in which the main shaft 20 is opened to pass therethrough, ;
A top plate 200 of a flat plate type positioned to be spaced apart from the upper side of the lower ring 100;
The upper end of the lower ring 100 is fixed along the circumference of the lower surface of the upper ring 200 and the lower end of the lower ring 100 is fixed to the upper surface of the lower ring 100, A plurality of connecting bars 300 whose upper and lower lengths are determined such that the upper plate 200 is spaced further from the lower ring 100; And,
And a wrench adapter (400), which is fixed to a central portion of an upper surface of the upper plate (200) and is coupled with a head (51) of a torque wrench (50)
The wrench adapter 400
And a head engaging groove 411 is formed on an upper surface of the adapter body so as to engage with the head 51 of the torque wrench 50. [ (410)
And a fixing nut 420 positioned on the bottom surface of the upper plate 200 and screwed to the lower end of the adapter body 410 passing through the upper plate 200 to prevent rotation of the adapter body 410 Wherein the hydraulic pressure control device is a hydraulic pressure control device. delete delete
KR2020150004545U 2015-07-06 2015-07-06 tirhtener device of radial piston type hydraulic apparatus KR200482285Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150004545U KR200482285Y1 (en) 2015-07-06 2015-07-06 tirhtener device of radial piston type hydraulic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150004545U KR200482285Y1 (en) 2015-07-06 2015-07-06 tirhtener device of radial piston type hydraulic apparatus

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KR200482285Y1 true KR200482285Y1 (en) 2017-01-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117128246A (en) * 2023-09-18 2023-11-28 杭州世宝汽车方向机有限公司 Steering gear bearing gap adjusting tool and adjusting method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09144854A (en) * 1995-11-22 1997-06-03 Hitachi Constr Mach Co Ltd Reduction gear
KR20050020366A (en) * 2003-08-22 2005-03-04 한국항공우주산업 주식회사 Torque Adaptor
KR101360193B1 (en) * 2012-12-21 2014-02-12 한국기초과학지원연구원 Rotating interlocking structure with lens retainer assembly tools for optics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09144854A (en) * 1995-11-22 1997-06-03 Hitachi Constr Mach Co Ltd Reduction gear
KR20050020366A (en) * 2003-08-22 2005-03-04 한국항공우주산업 주식회사 Torque Adaptor
KR101360193B1 (en) * 2012-12-21 2014-02-12 한국기초과학지원연구원 Rotating interlocking structure with lens retainer assembly tools for optics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117128246A (en) * 2023-09-18 2023-11-28 杭州世宝汽车方向机有限公司 Steering gear bearing gap adjusting tool and adjusting method thereof

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