WO2014098546A1 - Journal bearing - Google Patents

Journal bearing Download PDF

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Publication number
WO2014098546A1
WO2014098546A1 PCT/MX2012/000135 MX2012000135W WO2014098546A1 WO 2014098546 A1 WO2014098546 A1 WO 2014098546A1 MX 2012000135 W MX2012000135 W MX 2012000135W WO 2014098546 A1 WO2014098546 A1 WO 2014098546A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearings
bearing
covers
bearing block
retainer
Prior art date
Application number
PCT/MX2012/000135
Other languages
Spanish (es)
French (fr)
Inventor
José Leoncio VALDÉS HERNÁNDEZ
Original Assignee
Valdés Hernández José Leoncio
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 Valdés Hernández José Leoncio filed Critical Valdés Hernández José Leoncio
Priority to MX2015007908A priority Critical patent/MX360228B/en
Priority to PCT/MX2012/000135 priority patent/WO2014098546A1/en
Publication of WO2014098546A1 publication Critical patent/WO2014098546A1/en

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Classifications

    • 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
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/726—Sealings with means to vent the interior of the bearing
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
    • F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
    • 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

Definitions

  • the present invention relates to the field of heavy machinery bearings that can be relubricated specifically to bearings that can be adjusted in the field, for example, but not exclusively, in agricultural machinery.
  • the bearings are usually used to support rotating parts, such as those used in automotive arrows, agricultural machinery, light and heavy industrial machinery in general, etc.
  • the chumacera devices usually have a body made of a single piece (usually cast) and precision machining is carried out to place the bearings with their corresponding cups or cups, their lubricant seals as well as dust covers.
  • a liquid or pasty lubricant is always used as oil or grease to provide low friction wear preventing "bearing and support cups.
  • Winn's application US5328275 refers to a wheel and bearing assembly with a special sleeve assembly, comprises a pair of bearings mounted in a special housing; however, the way in which the bearings are housed and held • has no influence on the development of the present invention, similar constructions are found in US patents 3156506 granted to ' Scheifele, US4,552,367 granted to Fedorovich, US5, 904, 427 granted to Braun, US6,715,913 granted to Engel. All of them refer to double bearing bearings whose construction, however, differs from the one presented here.
  • each such ⁇ bearing comprises a support toward the inside of the body and its movement it is prevented by insurance slot, which is machined to the work arrow.
  • the two bearings share the same backrest and are not held on their outer face by with a secure nail, they are attached to the body of the bearing by means of a screw cap.
  • the chumaceras of the prior art have two opposite axial ends through which the lubricant escapes during operation. Therefore, a certain amount of lubricant must be introduced periodically to the bearing block, to compensate for such leakage and maintain the bearing capacity of the bearing (s). During the operation of introduction of the lubricant is. It is common for seals to be damaged or partially or totally out of position due to the force exerted by the same lubricant on the walls inside the body of the bearing. This seal also prevents the passage of dust outside the inside of the bearing block, in collaboration with dust covers.
  • An object of the present invention is to provide a bearing with double lubricable bearing.
  • An additional object is to provide a machined industrial bearing for heavy field adjustable equipment.
  • Another object is to provide a bearing block that can be built in any basic machine shop.
  • Still another object of the invention is to provide a system that prevents the entry of dust into the chumacera.
  • the 'present invention relates to a bearing machined using as base body a hollow bar of commercially purchased carbon steel, machined inside where a hub, seals, bearings and caps are accommodated, among others.
  • the covers provide a means to safely adjust the tightening of the bearings and compensate for the wear of the bearings, in addition to this function, they help prevent the ingress of dust into the bearing block.
  • Figure 1 shows a perspective view of the bearing block.
  • Figure 2 is a rear view of the bearing block of Figure 1.
  • Figure 3 is a sectional view taken along line A-A of Figure 2.
  • Figure 4 is. an exploding view of the stall.
  • Figure 5 is a sectional and detailed view showing the junction zone between the two bearings and the grease feed zone, in addition to the step produced by the difference in diameters between the threads of the caps and the hollow body of the steel bar.
  • the bearing 1 is basically formed by a hollow body made of a hollow steel bar 2, machined on the outside to center the interior machining.
  • the interior of the body 2 is machined (see figures 3, 4 and 5) to accommodate two bearings or bearings 3A, two seals 4 and a hub 5.
  • the two bearings are preferably tapered roller found, although other types can be used, depending on the type . use that you want to give to the chumacera.
  • Bearings or bearings 3A are held axially in position by means of two threaded side covers 6A (front) and 6B (rear). In the inner diameter of the bearings the bushing 5 is placed.
  • This bushing has a projection or stop 5A with a diameter greater than the outer diameter of the bushing, enough to prevent the cups 3B of the bearings or bearings 3A from touching . . This detail can best be seen in Figure 5.
  • the width of the stop is as small as possible in order to only serve as a stop for the 3C cones.
  • the hollow body 2 has a first end 2A and a second end 2B which are threaded to receive the side covers 6A and 6B. These threaded areas produce step 2C and 2E (see figure 3).
  • the 2D internal diameter of the bearing body can also be seen in this figure 3.
  • the body also comprises a first bore for the introduction of lubricant through the grease fitting 8 and a second bore for coupling a vent valve 9.
  • the hub 5 is practically completely cylindrical although it is possible that it has a conical or even stepped surface.
  • the vent valve 9 is used to allow air inside the body to escape as grease is introduced through the grease fitting 8.
  • the seals 4 are housed in the boxes 7A and 7B of the nuts 6A and 6B respectively, the seals will be trapped between the front faces of the boxes formed by the inner faces of the boxes 7A and 7B of the side covers 6A and 6B, respectively , and the bearing, having virtually no contact with the surrounding environment and protecting the interior of the bushing from dust. How It can be seen in Figure 5, this protection is achieved because the lid almost completely embraces the retainer, both on its periphery and on its face that touches the box of the lid that contains it, preventing a large percentage of dust from reaching to retainer 4.
  • the outer diameter of the bushing 5 is housed in whose inner diameter 5B the working arrow (not shown) to which the bearing is intended is housed.
  • the bearing comprises the grease fitting 8 located in a middle position of the diameter of the body 2 and the threaded vent 9 of air and grease placed approximately 45 to 90 ° of this grease fitting 8 either in clockwise or counterclockwise.
  • the object of the grease fitting 8 is to compensate for the leaks that the bearing block may have through the seals and the main purpose of the vent 9 is to ensure that no air is trapped in the bearing block and therefore areas without lubrication.
  • An additional object of this release is to provide a safe way to refill the grease without damaging the seals due to excessive pressure inside the bearing.
  • the covers 6A and 6B are the same in size and shape configuration except that the cover 6B is of left thread, while the cover 6A is of right thread, this arrangement may vary depending on the end use of the bearing block.
  • the covers are tightened until the bearing pressure is adjusted and then any movement tending to tighten or loosen the covers is prevented by means of a clamping element such as a threaded bolt 10.
  • the securing in position is achieved by the joint work of the slots 10A, 10B and at least one threaded hole 11.
  • At least one groove 10A, 10B coincides with a threaded bore 11, located at the front edge of the end 2A or 2B, as appropriate, this is achieved by loosening or tightening the threaded cover 6A or 6B a little more or both.
  • the covers have a first inner diameter that coincides with the diameter of the retainer and a ' second smaller diameter that allows the bushing 5 to pass if required.
  • the natural wear of the bearings is compensated by removing the bolt (s) 10 and tightening the cap (s) to clamp the bearings 3A against the respective cups 3B.
  • two ears 12 of suitable configuration and size for the intended use, are welded, these ears 12 may or may not have holes for introduction of fasteners. Modality .
  • Preferred includes holes for screw fixing to the corresponding machinery structure.
  • one of the lateral threaded covers (2A for example) is placed on the body 2 with its respective bearing 3A and retainer 4;
  • the bushing 5, the bearing 3A and the retainer 4 are inserted immediately and finally the opposite threaded cover 2B.
  • the caps are tightened to the appropriate degree, they are fixed by means of the bolt or oppressor 10.
  • the grease fitting 8 and the pressure relief valve 9 are placed.
  • grease is injected through the grease fitter until grease appears through the vent valve 9.

Abstract

The invention relates to a journal bearing formed by a body (2) housing two bearings (3) mounted on a hub (5) on one or other side of a central annular projection (5A), said bearings being trapped inside the body (2) between threaded end covers (6) in order to adjust the axial clearance and to compensate for possible wear. Each cover (6) includes an internal groove for housing an oil seal (4), with an external radial wall having an inside diameter that is slightly bigger than that of the corresponding oil seal in order to maintain same in position when lubricant is injected under pressure through a grease fitting (8), as well as comprising an additional valve (9) for releasing air to the exterior.

Description

CHUMACERA  ROWLOCK
ANTECEDENTES Y CAMPO DE LA INVENCIÓN BACKGROUND AND FIELD OF THE INVENTION
La presente invención se refiere al campo de chumaceras para maquinaria pesada relubricables concretamente a chumaceras que se pueden ajustar en campo, por ejemplo, aunque no exclusivamente, en maquinaria agrícola.  The present invention relates to the field of heavy machinery bearings that can be relubricated specifically to bearings that can be adjusted in the field, for example, but not exclusively, in agricultural machinery.
Las chumaceras usualmente son utilizadas para soporte de partes que giran, tales como aquellas utilizadas en flechas de automotores, maquinaria agrícola, maquinaria industrial ligera y pesada en general, etc.  The bearings are usually used to support rotating parts, such as those used in automotive arrows, agricultural machinery, light and heavy industrial machinery in general, etc.
Los dispositivos de chumacera usualmente tienen- un cuerpo hecho de una sola pieza (generalmente de fundición) y en éste se realizan maquinados de precisión para colocar los rodamientos con su tazas o copas correspondientes, sus retenes de lubricante así como guardapolvos. Siempre se utiliza un lubricante líquido o pastoso tal como aceite o grasa para proveer bajos coeficientes de fricción impidiendo el desgaste "de los rodamientos y de las tazas de apoyo. The chumacera devices usually have a body made of a single piece (usually cast) and precision machining is carried out to place the bearings with their corresponding cups or cups, their lubricant seals as well as dust covers. A liquid or pasty lubricant is always used as oil or grease to provide low friction wear preventing "bearing and support cups.
Se conoce la patente US 5885006, concedida a Sheedy, la cual describe una chumacera simple aunque no para uso pesado como el de la presente invención. Los materiales de construcción de esta chumacera de Sheedy son plásticos de diferentes formulaciones; otra diferencia importante con respecto a la presente invención que se construye básicamente con acero bajo carbono o aleado según se requiera. US Patent 5885006, issued to Sheedy, is known, which describes a simple bearing block although not for heavy use such as that of the present invention. The construction materials of this Sheedy bearing block are plastics of different formulations; another important difference with with respect to the present invention that is basically constructed with low carbon or alloy steel as required.
Se conoce además la solicitud de patente US2011247890 de Stoehr que describe una invención que proporciona un ensamble de rodamiento que comprende un eje de tubo con un eje central y que se extiende entre un alojamiento de muñón y una placa base de disco de fricción. Estos elementos no se encuentran presentes en la invención que se describe en el presente documento.  In addition, Stoehr's US2011247890 patent application discloses an invention that provides a bearing assembly comprising a tube shaft with a central axis and extending between a stump housing and a friction disc base plate. These elements are not present in the invention described herein.
. La solicitud US5328275 de Winn, se refiere a un ensamble de rueda y chumacera con un montaje de manguito especial, comprende un par dé rodamientos montados en un alojamiento especial; sin embargo la forma en que se alojan y •sujetan los rodamientos, no tiene influencia en el desarrollo de la presente invención, similares construcciones se encuentran en las patentes US 3156506 concedida a'Scheifele, US4,552,367 concedida a Fedorovich, US5, 904 , 427 concedida a Braun, US6,715,913 concedida a Engel. Todas ellas se refieren a chumaceras con doble rodamiento cuya construcción, sin embargo, difiere de la aquí presentada. . Winn's application US5328275, refers to a wheel and bearing assembly with a special sleeve assembly, comprises a pair of bearings mounted in a special housing; however, the way in which the bearings are housed and held • has no influence on the development of the present invention, similar constructions are found in US patents 3156506 granted to ' Scheifele, US4,552,367 granted to Fedorovich, US5, 904, 427 granted to Braun, US6,715,913 granted to Engel. All of them refer to double bearing bearings whose construction, however, differs from the one presented here.
También se , conocen en el campo chumaceras fabricadas en taller que comprenden dos rodamientos, uno en cada extremo de un cuerpo cilindrico, cada uno de tales ■ rodamientos comprende un soporte hacia el lado interior del cuerpo y se impide su movimiento por medio de seguros con ranura, la cual se maquina a la flecha de trabajo. En el caso de la presente invención, los dos rodamientos comparten un mismo respaldo y no se sujetan en su cara externa por medio de uñ seguro, se sujetan al cuerpo de la chumacera por medio de una tapa roscada. , Are also known in the bearings field shop - fabricated comprising two bearings, one at each end of a cylindrical body, each such ■ bearing comprises a support toward the inside of the body and its movement it is prevented by insurance slot, which is machined to the work arrow. In the case of the present invention, the two bearings share the same backrest and are not held on their outer face by with a secure nail, they are attached to the body of the bearing by means of a screw cap.
Las chumaceras del estado de la técnica poseen dos extremos axiales opuestos por los cuales se escapa el lubricante durante operación. Por tanto, se debe introducir en forma periódica una cierta cantidad de lubricante a la chumacera, para compensar tal fuga y mantener la capacidad de carga del o los rodamientos. Durante la operación de introducción del lubricante es. común que los retenes sufran daño o se salgan parcial o totalmente de su posición debido a la fuerza que ejerce el mismo lubricante sobre las paredes del interior del cuerpo de la chumacera. Este retén también evita el paso del polvo exterior al interior de la chumacera, en colaboración con unos guardapolvos.  The chumaceras of the prior art have two opposite axial ends through which the lubricant escapes during operation. Therefore, a certain amount of lubricant must be introduced periodically to the bearing block, to compensate for such leakage and maintain the bearing capacity of the bearing (s). During the operation of introduction of the lubricant is. It is common for seals to be damaged or partially or totally out of position due to the force exerted by the same lubricant on the walls inside the body of the bearing. This seal also prevents the passage of dust outside the inside of the bearing block, in collaboration with dust covers.
En condiciones de trabajo pesado, es necesario introducir un doble rodamiento a fin de repartir la carga disminuyendo paros de operación por reemplazo de estas piezas.  In heavy duty conditions, it is necessary to introduce a double bearing in order to distribute the load, reducing operating stoppages by replacing these parts.
OBJETOS DE LA INVENCIÓN OBJECTS OF THE INVENTION
Un objeto de la presente invención es el proveer de una chumacera con doble rodamiento lubricable. An object of the present invention is to provide a bearing with double lubricable bearing.
Es otro objeto de la invención el proveer de una chumacera en la cual no se salgan de posición o se dañen los retenes de lubricante por efecto de sobrepresion sobre ellos al momento de inyectarse el lubricante. Un objeto adicional es proveer una chumacera industrial maquinada para equipo pesado ajustable en campo. It is another object of the invention to provide a bearing block in which the lubricant seals are not out of position or damaged due to overpressure on them when the lubricant is injected. An additional object is to provide a machined industrial bearing for heavy field adjustable equipment.
Otro objeto más es el proporcionar una chumacera que pueda construirse en cualquier taller de maquinado básico.  Another object is to provide a bearing block that can be built in any basic machine shop.
Aún otro objeto de la invención es proveer de un sistema que impida la entrada de polvo al interior de la chumacera .  Still another object of the invention is to provide a system that prevents the entry of dust into the chumacera.
Estos y otros objetos evidentes para las personas con conocimientos medios en la materia a la lectura de la presente descripción se cumplen mediante la construcción de la chumacera aquí ilustrada y descrita.  These and other obvious objects for people with average knowledge in the field upon reading this description are fulfilled by the construction of the bearing block illustrated and described here.
BREVE DESCRIPCIÓN DE LA INVENCIÓN BRIEF DESCRIPTION OF THE INVENTION
Se refiere la' presente invención a una chumacera maquinada usando como cuerpo base una barra hueca de acero al carbono adquirida comercialmente, maquinada en el interior donde se alojan un buje, retenes, rodamientos y tapas, entre otros. Las tapas proveen una medio para ajustar de forma segura el apriete de los rodamientos y compensar el desgaste de los mismos, además de esta función, ayudan a evitar el ingreso de polvo al interior de la chumacera. The 'present invention relates to a bearing machined using as base body a hollow bar of commercially purchased carbon steel, machined inside where a hub, seals, bearings and caps are accommodated, among others. The covers provide a means to safely adjust the tightening of the bearings and compensate for the wear of the bearings, in addition to this function, they help prevent the ingress of dust into the bearing block.
BREVE DESCRIPCIÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
La figura 1 muestra una vista en perspectiva de la chumacera. La figura 2 es una vista posterior de la chumacera de la figura 1. Figure 1 shows a perspective view of the bearing block. Figure 2 is a rear view of the bearing block of Figure 1.
La figura 3 es una vista en corte tomada a lo largo de la linea A-A de la figura 2.  Figure 3 is a sectional view taken along line A-A of Figure 2.
La figura 4 es. una vista en explosión de la chumacera.  Figure 4 is. an exploding view of the stall.
La figura 5 es una vista en corte y en detalle que muestra la zona de unión entre los dos rodamientos y la zona de alimentación de grasa, además del escalón producido por la diferencia de diámetros entre la rosca de las tapas y del cuerpo hueco de la barra de acero.  Figure 5 is a sectional and detailed view showing the junction zone between the two bearings and the grease feed zone, in addition to the step produced by the difference in diameters between the threads of the caps and the hollow body of the steel bar.
DESCRIPCIÓN DETALLADA DE LA INVENCIÓN La descripción detallada de la invención se hará considerando las figuras 1 a 5 arriba descritas brevemente. DETAILED DESCRIPTION OF THE INVENTION The detailed description of the invention will be made considering figures 1 to 5 described briefly above.
La chumacera 1 está conformada básicamente por un cuerpo hueco hecho a base de una barra hueca de acero 2, maquinada en el exterior para centrar los maquinados interiores.  The bearing 1 is basically formed by a hollow body made of a hollow steel bar 2, machined on the outside to center the interior machining.
El interior del cuerpo 2 está maquinado (ver figuras 3, 4 y 5) para alojar dos baleros o rodamientos 3A, dos retenes 4 y un buje 5. Los dos baleros preferentemente son cónicos de rodillos encontrados, aunque pueden utilizarse otros tipos, dependiendo del . uso que se desee dar a la chumacera. Los baleros o rodamientos 3A se mantienen axialmente en posición por medio de dos tapas laterales roscadas 6A (frontal) y 6B (posterior) . En el diámetro interior de los baleros se coloca el buje 5. Este buje tiene una saliente o tope 5A con diámetro mayor al diámetro exterior del buje, lo suficiente para que impida que las tazas 3B de los baleros o rodamientos 3A se toquen.. Este detalle se puede apreciar de mejor forma en la figura 5. El ancho del tope es tan pequeño como se pueda a fin de sólo servir como tope para los conos 3C. The interior of the body 2 is machined (see figures 3, 4 and 5) to accommodate two bearings or bearings 3A, two seals 4 and a hub 5. The two bearings are preferably tapered roller found, although other types can be used, depending on the type . use that you want to give to the chumacera. Bearings or bearings 3A are held axially in position by means of two threaded side covers 6A (front) and 6B (rear). In the inner diameter of the bearings the bushing 5 is placed. This bushing has a projection or stop 5A with a diameter greater than the outer diameter of the bushing, enough to prevent the cups 3B of the bearings or bearings 3A from touching . . This detail can best be seen in Figure 5. The width of the stop is as small as possible in order to only serve as a stop for the 3C cones.
El cuerpo hueco 2 tiene un primer extremo 2A y un segundo extremo 2B los cuales están roscados para recibir las tapas laterales 6A y 6B. Estas zonas roscadas, producen el escalón 2C y el 2E (ver figura 3) . El diámetro interno 2D del cuerpo de la chumacera se aprecia también en esta figura 3.. El cuerpo además comprende un primer barreno para introducción de lubricante a través de la grasera 8 y un segundo barreno para acoplar una válvula de venteo 9.  The hollow body 2 has a first end 2A and a second end 2B which are threaded to receive the side covers 6A and 6B. These threaded areas produce step 2C and 2E (see figure 3). The 2D internal diameter of the bearing body can also be seen in this figure 3. The body also comprises a first bore for the introduction of lubricant through the grease fitting 8 and a second bore for coupling a vent valve 9.
Como se aprecia - de las figuras 3 y 4, el buje 5 prácticamente es totalmente cilindrico aunque es posible que el mismo tenga una superficie cónica o incluso escalonada.  As can be seen - of Figures 3 and 4, the hub 5 is practically completely cylindrical although it is possible that it has a conical or even stepped surface.
La válvula de venteo 9 se utiliza para permitir que el aire dentro del cuerpo salga conforme se introduce grasa por la grasera 8.  The vent valve 9 is used to allow air inside the body to escape as grease is introduced through the grease fitting 8.
Los retenes 4 se alojan en las cajas 7A y 7B de las tuercas 6A y 6B respectivamente, los retenes quedarán atrapados entre las caras frontales de las cajas formadas por las caras interiores de las cajas 7A y 7B de las tapas laterales 6A y 6B, respectivamente, y el balero, no teniendo contacto prácticamente con el ambiente circundante y protegiendo el interior de la chumacera del polvo. Como puede apreciarse en la figura 5, esta protección se logra debido a que la tapa abraza casi por completo al reten, tanto en su periferia como en su cara que toca la caja de la tapa que la contiene, impidiendo que un gran porcentaje de polvo llegue al retén 4. The seals 4 are housed in the boxes 7A and 7B of the nuts 6A and 6B respectively, the seals will be trapped between the front faces of the boxes formed by the inner faces of the boxes 7A and 7B of the side covers 6A and 6B, respectively , and the bearing, having virtually no contact with the surrounding environment and protecting the interior of the bushing from dust. How It can be seen in Figure 5, this protection is achieved because the lid almost completely embraces the retainer, both on its periphery and on its face that touches the box of the lid that contains it, preventing a large percentage of dust from reaching to retainer 4.
En el diámetro interior del retén 4 se aloja el diámetro exterior del buje 5 en cuyo diámetro interior 5B se aloja la flecha de trabajo (no mostrada) a la cual está destinada la chumacera.  In the inner diameter of the retainer 4 the outer diameter of the bushing 5 is housed in whose inner diameter 5B the working arrow (not shown) to which the bearing is intended is housed.
Como muestra la vista en explosión de la figura 4, la chumacera comprende la grasera 8 ubicada en una posición media del diámetro del cuerpo 2 y el desfogue roscado 9 de aire y grasa colocado aproximadamente a 45 a 90° de esta grasera 8 ya sea en el sentido de las manecillas del reloj o en contrasentido. Evidentemente el objeto de la grasera 8 es compensar las fugas que pueda tener la chumacera a través de los retenes y el objeto principal del desfogue 9 es asegurarse de que no quede aire atrapado en la chumacera y por ende zonas sin lubricar. Un objeto adicional dé este desfogue es el de proveer una forma segura de rellenar de lubricante la grasera sin dañar los retenes por efecto de un exceso de presión al interior de la chumacera. Cuando el espacio interior se ha llenado con grasa, ésta empieza a salir por la membrana plástica que posee el desfogue y que está adaptada y diseñada para que tenga la fuerza suficiente para impedir la salida por gravedad de la grasa contenida y que al mismo tiempo permita la salida de aire por . efecto de desplazamiento del mismo por parte de la grasa. Las tapas 6A y 6B son iguales en configuración tamaño y forma excepto porque la tapa 6B es de rosca izquierda, en tanto que la tapa 6A es de rosca derecha, está disposición puede variar dependiendo del uso final de la chumacera. Las tapas se aprietan hasta ajusfar la presión del rodamiento y entonces se impide todo movimiento tendiente a apretar o aflojar las tapas por medio de un elemento de sujeción tal como un perno roscado 10. El aseguramiento en posición se logra por el trabajo en conjunto de las ranuras 10A, 10B y de al menos un barreno roscado 11. Una vez en posición, es decir una vez que se ha aprisionado . el rodamiento, se busca que al menos una ranura 10A, 10B coincida con un barreno roscado 11, ubicado en el borde frontal del extremo 2A ó 2B, según corresponda, esto se logra aflojando o apretando un poco más la tapa roscada 6A ó 6B o ambas. Las tapas tienen un primer diámetro interior que coincide con el diámetro del retén y un' segundo diámetro menor que permite el paso del buje 5 en caso de requerirlo. As the exploded view of Figure 4 shows, the bearing comprises the grease fitting 8 located in a middle position of the diameter of the body 2 and the threaded vent 9 of air and grease placed approximately 45 to 90 ° of this grease fitting 8 either in clockwise or counterclockwise. Obviously the object of the grease fitting 8 is to compensate for the leaks that the bearing block may have through the seals and the main purpose of the vent 9 is to ensure that no air is trapped in the bearing block and therefore areas without lubrication. An additional object of this release is to provide a safe way to refill the grease without damaging the seals due to excessive pressure inside the bearing. When the interior space has been filled with grease, it begins to come out of the plastic membrane that has the vent and is adapted and designed so that it has sufficient strength to prevent the exit of the contained fat by gravity and at the same time allow the air outlet by. effect of displacement of the fat by the fat. The covers 6A and 6B are the same in size and shape configuration except that the cover 6B is of left thread, while the cover 6A is of right thread, this arrangement may vary depending on the end use of the bearing block. The covers are tightened until the bearing pressure is adjusted and then any movement tending to tighten or loosen the covers is prevented by means of a clamping element such as a threaded bolt 10. The securing in position is achieved by the joint work of the slots 10A, 10B and at least one threaded hole 11. Once in position, that is, once it has been pinched . the bearing, it is sought that at least one groove 10A, 10B coincides with a threaded bore 11, located at the front edge of the end 2A or 2B, as appropriate, this is achieved by loosening or tightening the threaded cover 6A or 6B a little more or both. The covers have a first inner diameter that coincides with the diameter of the retainer and a ' second smaller diameter that allows the bushing 5 to pass if required.
Gracias a la configuración anterior, se compensa el desgaste natural de los rodamientos al retirar el o los pernos 10 y apretar la o las tapas para aprisionar los rodamientos 3A contra las tazas respectivas 3B.  Thanks to the previous configuration, the natural wear of the bearings is compensated by removing the bolt (s) 10 and tightening the cap (s) to clamp the bearings 3A against the respective cups 3B.
Para sujetar la chumacera a la estructura que soportará la carga. de la flecha de trabajo, se sueldan dos orejas 12, de configuración y tamaño adecuados para el uso pretendido, estas orejas 12 pueden o no tener barrenos para introducción de elementos de fijación. La modalidad . To fasten the bearing block to the structure that will support the load . of the working arrow, two ears 12, of suitable configuration and size for the intended use, are welded, these ears 12 may or may not have holes for introduction of fasteners. Modality .
9  9
preferida incluye barrenos para fijación por tornillo a la estructura de la maquinaria correspondiente. Preferred includes holes for screw fixing to the corresponding machinery structure.
Para armar la chumacera se procede de la siguiente manera: se coloca en el cuerpo 2 una de las tapas roscadas laterales (2A por ejemplo) con su respectivo balero 3A y retén 4; acto seguido se inserta el buje 5, el rodamiento 3A y el retén 4 opuestos y finalmente la tapa roscada opuesta 2B. Una vez apretadas las tapas al grado adecuado se fijan las mismas por medio del perno u opresor 10. Se coloca la grasera 8 y la válvula de alivio de presión 9. Para finalizar se inyecta grasa a través de la grasera hasta que aparece grasa por la válvula de venteo 9.  To assemble the bearing block, proceed as follows: one of the lateral threaded covers (2A for example) is placed on the body 2 with its respective bearing 3A and retainer 4; The bushing 5, the bearing 3A and the retainer 4 are inserted immediately and finally the opposite threaded cover 2B. Once the caps are tightened to the appropriate degree, they are fixed by means of the bolt or oppressor 10. The grease fitting 8 and the pressure relief valve 9 are placed. Finally, grease is injected through the grease fitter until grease appears through the vent valve 9.

Claims

REIVINDICACIONES Habiendo descrito suficientemente la. invención, se considera la misma como novedosa, con actividad inventiva y aplicación industrial, por. lo tanto, se reclama como de mi propiedad lo expresado y contenido en las siguientes cláusulas reivindicatorías. CLAIMS Having sufficiently described the. invention, is considered the same as novel, with inventive activity and industrial application, by. therefore, what is expressed and contained in the following claims clauses is claimed as my property.
1. Una chumacera relubricable que comprende un cuerpo . (2), buje (5), una grasera (8)., una válvula de desfogue. (9) y dos retenes (4), caracterizada porque comprende dos rodamientos (3.A) montados sobre el buje (5) y aprisionados por tapas laterales roscadas (6A y 6B) respectivas, las tapas laterales comprenden cada una, una caja (7A y 7B) , en la cara interior, para alojar cada retén, la caja comprende una pared que abarca prácticamente la cara de retención del retén y un diámetro que coincide con el diámetro exterior del retén para ajuste por presión, el buje (5) comprende un tope (5A) contra el cual topan las tazas (3B) con los rodamientos (3A) . 1. A relubricable bearing that comprises a body. (2), bushing (5), a grease fitting (8)., A relief valve. (9) and two seals (4), characterized in that it comprises two bearings (3.A) mounted on the hub (5) and trapped by respective threaded side covers (6A and 6B), the side covers each comprise a box ( 7A and 7B), on the inner face, to accommodate each retainer, the housing comprises a wall that practically covers the retaining face of the retainer and a diameter that coincides with the outer diameter of the retainer for pressure adjustment, the bushing (5) It comprises a stop (5A) against which the cups (3B) and the bearings (3A) collide.
2. La chumacera de conformidad con la reivindicación. 1, caracterizada porque las tapas comprenden ranuras (10A y 10B) las cuales coinciden con al menos un barreno roscado (11) tanto en posición como en tamaño de modo que trabajen en conjunto para que a través de ellas pase un perno (10) para sujetarse por rosca al barreno (11).  2. The bearing block according to claim. 1, characterized in that the covers comprise grooves (10A and 10B) which coincide with at least one threaded hole (11) both in position and size so that they work together so that a bolt (10) passes through them fasten by thread to the hole (11).
3. La chumacera de conformidad con la reivindicación 2, caracterizada porque la válvula de desfogue (9) se ubica en la parte inferior de la chumacera (1) y la grasera (8) se ubica a aproximadamente 45 a 90° respecto de la válvula (9), el cuerpo (2) comprende además medios de sujeción (12) para sujeción al cuerpo del equipo de trabajo al que se destina la chumacera. 3. The bearing block according to claim 2, characterized in that the relief valve (9) is located at the bottom of the bearing block (1) and the grease fitting (8) is located at approximately 45 to 90 ° with respect to the valve (9), the body (2) also includes fastening means (12) for fastening to the body of the work equipment to which the bearing is intended.
4. La chumacera de conformidad con la reivindicación 1, caracterizada porque las tapas se unen al cuerpo por medio de rosca y el apriete de estas tapas produce el apriete de los rodamientos para compensar su desgaste, las tapas . se traban en su posición por medio del perno roscado (10) que pasa a través de las ranuras (10A, 10B) .  4. The bearing in accordance with claim 1, characterized in that the covers are attached to the body by means of thread and the tightening of these covers causes the tightening of the bearings to compensate for their wear, the covers. they are locked in position by means of the threaded bolt (10) that passes through the grooves (10A, 10B).
PCT/MX2012/000135 2012-12-19 2012-12-19 Journal bearing WO2014098546A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523533A (en) * 2016-12-19 2017-03-22 中北大学 Double-bearing nested structure suitable for passive semi-strapdown inertia measurement system
CN110410422A (en) * 2019-07-29 2019-11-05 蚌埠淮畔精密机械有限公司 A kind of seat type integral structure bearing
CN114110127A (en) * 2021-08-31 2022-03-01 西南电子技术研究所（中国电子科技集团公司第十研究所） Double deep groove ball bearing pre-tightening eccentric cam follower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR534212A (en) * 1921-04-15 1922-03-22 Spherical and ball bearing
US1778822A (en) * 1927-04-29 1930-10-21 Timken Roller Bearing Co Shaft bearing
US2676856A (en) * 1952-08-27 1954-04-27 William R Kohse Movable antifrication bearing for hoisting drums
GB889176A (en) * 1959-09-14 1962-02-07 Neville Clyde Mccallum Improvements in or relating to bearing assemblies
GB2170266A (en) * 1985-01-25 1986-07-30 Clark Michigan Co Pivot joint and method of assembling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR534212A (en) * 1921-04-15 1922-03-22 Spherical and ball bearing
US1778822A (en) * 1927-04-29 1930-10-21 Timken Roller Bearing Co Shaft bearing
US2676856A (en) * 1952-08-27 1954-04-27 William R Kohse Movable antifrication bearing for hoisting drums
GB889176A (en) * 1959-09-14 1962-02-07 Neville Clyde Mccallum Improvements in or relating to bearing assemblies
GB2170266A (en) * 1985-01-25 1986-07-30 Clark Michigan Co Pivot joint and method of assembling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523533A (en) * 2016-12-19 2017-03-22 中北大学 Double-bearing nested structure suitable for passive semi-strapdown inertia measurement system
CN110410422A (en) * 2019-07-29 2019-11-05 蚌埠淮畔精密机械有限公司 A kind of seat type integral structure bearing
CN114110127A (en) * 2021-08-31 2022-03-01 西南电子技术研究所（中国电子科技集团公司第十研究所） Double deep groove ball bearing pre-tightening eccentric cam follower
CN114110127B (en) * 2021-08-31 2023-06-02 西南电子技术研究所（中国电子科技集团公司第十研究所） Double deep groove ball bearing pretension eccentric cam follower

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