CN112943900B - Protector for replacing oil scraper ring, disassembling and assembling platform and oil scraper ring replacing method - Google Patents

Abstract

The invention discloses a protective device for replacing an oil scraper ring, a dismounting platform and an oil scraper ring replacing method, which solve the problems of high replacing difficulty and low operating efficiency of the oil scraper ring of a gearbox in the prior art, have the beneficial effects of improving the operating efficiency and the maintenance quality, and have the following specific schemes: a protection device for replacing an oil scraper ring comprises a first protection component, wherein the first protection component can be connected with a gear box and can limit a bearing of the gear box so as to stabilize the gear box and avoid the bearing of the gear box from colliding; and the first protection component is provided with a size measuring groove capable of measuring the oil scraper ring mounting seat of the gear box.

Description

Protector for replacing oil scraper ring, disassembling and assembling platform and oil scraper ring replacing method

Technical Field

The invention relates to the field of rail transit, in particular to a protective device for replacing an oil slinger, a disassembling and assembling platform and an oil slinger replacing method.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The rail transit vehicle needs to return to a factory for advanced repair after running for a set time, the oil deflector ring needs to be updated when the abrasion of the oil deflector ring is out of limit or the oil deflector ring structure needs to be modified in the process of advanced repair of the rail transit vehicle such as a motor train unit, the bearing cover on the corresponding side needs to be disassembled when the oil deflector ring needs to be replaced, and the gear box is assembled and disassembled due to the fact that the gear box adopts the tapered roller bearing, so that the gear box is easy to move, and the bearing collision is easily caused by moving the gear box; meanwhile, the oil deflector mounting seat is removed, the axle oil deflector mounting seat needs to be polished and repaired and subjected to magnetic powder inspection, and due to the lack of a corresponding protection device, foreign matters can easily enter the gear box to pollute the gear box; the size of an inner hole of the oil slinger and the size of the oil slinger mounting seat need to be measured during press mounting of the oil slinger, but in the prior art, the size of the axle oil slinger mounting seat cannot be measured during the mounting process of the bearing cover due to the position limitation of the bearing cover, the bearing cover needs to be dismounted again, the process is long in consumed time, and the problem of manpower waste exists.

In summary, the inventors have found that, when the oil slinger is replaced at present, the following problems exist:

1) the gearbox bearing is easy to collide.

2) The oil deflector ring mounting seat is difficult to detect in size, complex in operation and low in efficiency.

3) The gear box is not protected and is easy to cause the entry of foreign matters.

4) In order to avoid the entry of foreign matters, operators operate carefully, so that the operation difficulty is high.

5) Personnel utilization is low, and the maintenance quality can not be guaranteed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the protection device for replacing the oil scraper ring, which greatly facilitates the replacement work of the oil scraper ring of the gear box, can effectively avoid the condition that the bearing of the gear box is collided and exceeds the limit, and effectively avoids foreign matters from entering the gear box.

The second purpose of the invention is to provide a dismounting platform, which can conveniently dismount the oil retainer of the gear box and has relatively low operation difficulty.

The third purpose of the invention is to provide a method for replacing the oil scraper ring, which can effectively and conveniently replace the oil scraper ring, has high personnel utilization rate and relatively simple operation, and greatly improves the operation efficiency.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a protection device for replacing an oil scraper ring comprises a first protection component, wherein the first protection component can be connected with a gear box and can limit a bearing of the gear box so as to stabilize the gear box and avoid the bearing of the gear box from colliding; and the first protection component is provided with a size measuring groove capable of measuring the oil scraper ring mounting seat of the gear box.

According to the protection device for replacing the oil scraper ring, the first protection component comprises an outer section and an inner section, the inner section is arranged on the inner side of the outer section and fixedly connected with the outer section, the inner section can limit the bearing of the gear box, the outer section can be detachably connected with the gear box body, and when the outer section is connected with the gear box body, the inner section is matched with the bearing of the gear box to stabilize the gear box.

Among the foretell protector, the gear box bearing can be carried on spacingly to first protective part inner segment, and outside section can be with gear box fixed connection, like this move back and unload former gear box oil slinger back, can play the effect that prevents the foreign matter and get into the gear box at oil slinger mount pad repairing process, and the handling of the gear box of being convenient for of fixed gear box simultaneously avoids the bearing to collide with.

In order to better fit with the bearing, the inner section is an inner ring, and the inner side of the inner ring can be fixed to the annular bearing ring of the gearbox.

The protection device for replacing the oil scraper ring comprises an outer ring with a set length, wherein a first ring piece extends outwards from one side of the outer ring, a limiting piece is arranged on the end face, opposite to the outer ring, of the first ring piece, the limiting piece is provided with a size measuring groove for measuring the size of an oil scraper ring mounting seat, the first ring piece is connected with a gearbox box body, and a plurality of bolt holes are formed in the first ring piece; through the setting of locating part, can be convenient for form the size measurement groove in the external section, and the setting of locating part also is convenient for with the sealing connection of second protective member.

In the guard for changing a slinger as described above, the stopper is partially fixed to the first ring member and partially provided at a hollow position of the outer ring.

The guard for replacing the slinger as described above includes at least two segments spaced apart by a predetermined distance to form the sizing groove, and in some examples, the segments are located on the same ring.

In order to effectively ensure the engagement between the limiting member and the second guard member, the guard for replacing the slinger as described above is configured such that the inner sidewall of the inner segment is disposed beyond the inner sidewall of the limiting member as viewed in the radial direction of the first guard member.

The protection device for changing the oil scraper ring further comprises a second protection component, wherein the second protection component can be in sealing connection with the first protection component, and after the installation seat of the oil scraper ring of the gear box is polished and repaired, the second protection component is installed, so that magnetic powder inspection work can be effectively carried out on the installation seat of the oil scraper ring of the gear box, magnetic powder is prevented from entering the gear box, and the operation difficulty is fully reduced.

The guard device for replacing the oil slinger comprises a base body, a first guard component and a second guard component, wherein the base body can be connected with the first guard component, the base body is a ring-shaped member, and the inner side of the base body is bent towards the inner end face of the base body to form a groove for mounting a sealing ring; the base member sets up the through-hole, and the first annular member of outside section sets up the through-hole equally, and the bolt passes two through-holes and realizes being connected dismantled of first protective member and second protective member.

According to the protector for replacing the oil scraper ring, the limiting piece is provided with the set thickness, the step is arranged on one side, close to the inner section, of the limiting piece, the step is used for clamping the sealing ring, and the stability of the second protective component relative to the first protective component is effectively guaranteed through the step.

In a second aspect, the invention further provides a disassembling and assembling platform, which comprises a platform body, and the protection device for replacing the oil scraper ring is placed on the platform body.

In a third aspect, the invention further provides a dismounting platform, the platform body is provided with a clamping groove for placing the first protection component, and the gear box can be arranged on the dismounting platform to replace the oil retainer of the gear box.

In a fourth aspect, the present invention further provides a method for replacing a slinger, including the following steps:

placing the gear box on a station, and removing a gear box sealing cover and a bearing cover;

thermally withdrawing the oil scraper ring of the gear box in a heating mode;

mounting the first guard member to the gear housing;

polishing and repairing the mounting seat of the oil deflector ring of the gear box;

mounting said second shield member at the outer end of the first shield member;

carrying out magnetic particle inspection on the mounting seat of the oil deflector ring of the gear box;

disassembling the second protective component;

measuring the size of the mounting seat of the oil deflector of the gear box, and selecting and matching a proper oil deflector of the gear box;

and (5) disassembling the first protective component and installing a gear box oil scraper ring.

The beneficial effects of the invention are as follows:

1) according to the protective device, the first protective component is arranged, the first protective component can be effectively and fixedly connected with the gearbox and is matched with the conical roller bearing of the gearbox, the gearbox is prevented from moving, the conical roller bearing of the gearbox is limited by the inner section because the outer section is fixedly connected with the gearbox in the moving process of the gearbox, and the conical roller bearing is prevented from being collided and being over-limited; and the first protection component can effectively measure the oil scraper ring mounting seat through the arrangement of the size measuring groove.

2) According to the invention, through the arrangement of the external section, the internal section can be effectively fixed, and the connection with the gear box is convenient; furthermore, through the arrangement of the limiting part, the size measurement of the gear box oil deflector mounting seat can be conveniently realized through the size measurement groove, and the size measurement groove can be effectively sealed before flaw detection is carried out on the gear box oil deflector mounting seat, so that the condition that foreign matters enter the gear box to pollute the gear box is avoided; and the size detection of the oil deflector ring mounting seat can be carried out under the condition of no decomposition of the device, the operation danger coefficient is effectively reduced, the whole operation process is simple, the utilization rate of personnel is fully improved, and the maintenance quality is ensured.

3) According to the invention, through the arrangement of the second protective component, the groove formed in the base body can be provided with the sealing ring, and the sealing ring can be clamped with the external step, so that the size measuring groove of the first protective component can be effectively sealed, and the sealing connection of the first protective component and the second protective component is ensured.

4) The invention can carry out thermal annealing on the oil deflector of the gear box through the heater, thereby greatly facilitating the annealing and disassembling of the oil deflector of the gear box and reducing the difficulty of replacing the oil deflector of the gear box.

5) According to the invention, through the arrangement of the dismounting platform, the dismounting work of the oil retainer ring can be carried out on the gear box on the dismounting platform, and the maintenance time is effectively saved.

6) According to the method for replacing the oil scraper ring, the protective device is used, so that the bearing of the gear box can be effectively prevented from colliding, foreign matters are prevented from entering the gear box, and the effects of eliminating operation risks, improving the utilization rate of personnel, saving maintenance time and ensuring maintenance quality are achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a perspective view of a first guard member in a guard for replacing a slinger according to one or more embodiments of the present invention.

Fig. 2 is a front view of a first guard member in a guard for replacing a slinger according to one or more embodiments of the present invention.

Fig. 3 is a side view of a first guard member in a guard for replacing a slinger according to one or more embodiments of the present invention.

Fig. 4 is a perspective view of an inner section of a guard for replacing a slinger according to one or more embodiments of the present invention.

Fig. 5 is a perspective view of a second guard member in a guard device for replacing a slinger according to one or more embodiments of the present invention.

Fig. 6 is a rear view of a second guard member in a guard for replacing a slinger according to one or more embodiments of the present invention.

FIG. 7 is a schematic cross-sectional view A-A of FIG. 6 according to one or more embodiments of the present disclosure.

In the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the schematic is shown only schematically.

Wherein: 1. the device comprises a limiting piece, 2, an outer section, 3, an inner section, 4, a size measuring groove, 5, a first annular piece, 6, an outer ring, 7 bolt holes, 8, a base body, 9, a groove and 10 through holes.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.

As introduced in the background art, in the prior art, the problems of difficult repair of an axle slinger mounting seat and difficult protection of a gear box exist in the slinger replacing process, and in order to solve the technical problems, the invention provides a protector, a dismounting platform and a slinger replacing method for replacing the slinger.

Example one

In a typical embodiment of the present invention, referring to fig. 1 and 2, a guard for replacing an oil slinger includes a first guard component, which can be connected to a gear box and can limit a bearing of the gear box, so as to stabilize the gear box and prevent the bearing of the gear box from colliding; and the first protection component is provided with a size measuring groove capable of measuring the oil scraper ring mounting seat of the gear box.

Further, first protective part includes outside section 2 and inside section 3, inside section 3 sets up in 2 inboards of outside section and links firmly with outside section 2, inside section is used for cooperating with gear box tapered roller bearing, first protective part can dismantle with the gear box and be connected, when using, outside section 2 is connected with the gear box to play the effect that prevents the foreign matter and get into the gear box at oil scraper ring mount pad repairing process, and the handling of the gear box of being convenient for of fixed gear box simultaneously, avoid the bearing to collide with.

It should be noted that the inner section 3 and the outer section 2 are press-fitted together by interference fit.

It will be readily appreciated that for a better fit with the gearbox tapered roller bearing, in some examples the internal section is in the form of an inner ring which may be fixed on the inside in the annular direction of the gearbox tapered roller bearing for restraining the tapered roller bearing, as shown with reference to figure 4.

In this embodiment, the outer section 2 is an annular structural member, as shown in fig. 3, the outer section 2 includes a hollow outer ring 6 having a set length, the outer ring 6 is insertable into the gear box, a first annular member 5 is disposed on one side of the outer ring, the first annular member extends from an outer side of the outer ring 6, the first annular member and the outer ring are an integral structural member, and a position limiting member is disposed on an end surface of the first annular member opposite to the outer ring, and the position limiting member is partially fixed on the first annular member and partially disposed at a hollow position of the outer ring.

Further, the thickness of first ring-shaped spare is thinner than the thickness of outer lane 6 for the external diameter of first ring-shaped spare is greater than the external diameter of outer lane, and first ring-shaped spare hoop is equipped with a plurality of bolt holes 7, and a plurality of bolt holes 7 can evenly be arranged, realizes dismantling of first protective element and gear box through bolt holes 7 and is connected.

The limiting part 1 is provided with a size measuring groove for measuring the size of the oil scraper ring mounting seat, and a measuring space can be reserved for a measuring scale for measuring the size of the oil scraper ring mounting seat.

Specifically, in this embodiment, the limiting member is an arc-shaped segment fixed to the first annular member, and the two arc-shaped segments are spaced apart by a predetermined distance to form the dimension measuring groove; furthermore, the outer section is provided with two sizing grooves 4 by the arrangement of two arc-shaped sections.

In some examples, the two arcuate segments and the two sizing grooves are located on the same ring, and the inner sidewall of the inner ring is disposed beyond the inner sidewall of the ring.

In the process of replacing the oil scraper ring, the inner section of the first protective component is matched with the conical roller bearing of the gear box, so that the gear box is prevented from moving; first annular member passes through the fixed connection of bolt realization and gear box in the outer section, makes things convenient for the removal of gear box like this, even the gear box is at the removal in-process, carries on spacingly because of the inner section to gear box tapered roller bearing, avoids causing tapered roller bearing to collide with the transfinite.

Example two

In an exemplary embodiment of the present invention, a guard device for replacing a slinger is provided in the present embodiment, which is based on the first guard member in the first embodiment, and further provides a second guard member for fixing with the first guard member and for covering a dimension measuring groove of the first guard member, thereby preventing magnetic powder inspection liquid from entering the interior of the gear box.

Further, referring to fig. 5, 6 and 7, the second protection component includes a base 8, the base 8 is an annular structural member, the inner side of the base 8 is bent towards the inner end surface of the base to form a groove, the groove is used for installing a sealing ring 9 (such as an O-ring), the sealing ring 9 protrudes out of the groove, so that when the second protection component is matched with the first protection component, the sealing ring seals the inner side of the second protection component, i.e. the inner side of the base is hermetically connected with the first protection component, and after the two components are connected, magnetic particle inspection and other work are performed on the oil deflector mounting seat, so that foreign matters can be effectively prevented from entering the interior of the gearbox to pollute the gearbox.

In this embodiment, the base 8 is a second annular member, the groove for installing the sealing ring 9 is formed in the inner side of the second annular member corresponding to the outer side surface of the second annular member, as shown in fig. 6, the base is provided with at least two through holes 10, the through holes are symmetrically arranged on the base, the corresponding first annular member is provided with a threaded hole at a set position, and a locking member such as a bolt is detachably connected with the first annular member 5 in the first protective member through the through hole 10;

it will be readily appreciated that the thickness of the base body 8 is relatively thin, in particular it is a circular ring, having a given width, which is greater than the width of the arc-shaped segment.

In order to effectively seal the size measuring groove, the diameter of the inner side of the second annular part is slightly smaller than the inner diameter of the ring where the two arc-shaped sections are located, namely the diameter of the second annular part is larger than the inner diameter of the ring where the two arc-shaped sections are located.

It will be readily appreciated that the second shield member is sealingly connected to the first shield member primarily by means of a sealing ring.

In order to better cooperate with the second protective component, the arc-shaped section in the first protective component has a set thickness, a step is arranged on the inner side, close to the inner ring, of the arc-shaped section, and the step is used for clamping a sealing ring arranged at the groove of the second protective component.

It should be noted that, in some specific examples, one of the side walls (the side wall parallel to the outer ring inner side wall) of the step arranged on the inner side of the arc-shaped section is aligned with the inner side wall of the outer ring, or slightly exceeds the inner side wall of the outer ring or the first ring member, because it is considered that the inner side of the inner ring exceeds the inner side wall of the arc-shaped section, the first protection component and the second protection component can be effectively and reliably connected through the clamping of the sealing ring and the step.

EXAMPLE III

In an exemplary embodiment of the present invention, a detachable platform includes a platform body, and the first protection component described in the first embodiment and the second protection component described in the second embodiment are disposed on the platform body.

It is easy to understand that, the platform body can be provided with a first clamping groove and a second clamping groove, and the first clamping groove and the second clamping groove are respectively used for arranging a first protection component and a second protection component, so that the first protection component and the second protection component can be conveniently stored.

Furthermore, a heater is also arranged on the dismounting platform, the heater can be arranged on the gear shaft, and the heater is used for thermally withdrawing the oil retainer ring of the gear box; in particular, the heater may be an electromagnetic induction heater, although the heater may be other types of heaters.

Example four

The present embodiment provides a method for replacing a slinger, taking a gear box GW side (large gear wheel side) as an example, and includes the following contents:

placing the gear box on a disassembly and assembly platform, and disassembling a GW side sealing cover and a bearing cover of the gear box;

heating an oil retainer at the GW side of the gear box and thermally withdrawing the oil retainer at the GW side of the gear box by using an electromagnetic heater;

a first protection component is arranged on the GW side of the gear box, the inner section of the first protection component limits the bearing of the gear box, and the outer section is fixedly connected with the box body of the gear box;

polishing and repairing a gearbox GW side oil retainer mounting seat;

an O-shaped ring is arranged at a groove of the inner end surface of the second protection component, and the second protection component is installed on the outer end side of the first protection component through a bolt;

carrying out magnetic particle inspection on a mounting seat of an oil deflector ring on the GW side of the gear box;

disassembling the second protective component;

carrying out homothermal treatment on the first protective component and the second protective component;

measuring the size of a mounting seat of a GW side oil deflector of the gear box through a size measuring groove in a limiting part of a first protection component, and carrying out selective matching on the GW side oil deflector of the gear box;

and (4) disassembling the first protective component, and carrying out oil retainer press-fitting on the GW side of the gear box.

Of course, it will be readily appreciated that one slinger replacement method is equally applicable to the replacement of the slinger on the other side of the gearbox.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A protection device for replacing an oil scraper ring is characterized by comprising a first protection component, wherein the first protection component can be connected with a gear box and can limit a bearing of the gear box so as to stabilize the gear box and avoid the bearing of the gear box from colliding; the first protection component is provided with a size measuring groove capable of measuring the oil deflector mounting seat of the gear box;

the first protective component comprises an outer section and an inner section, the inner section is arranged on the inner side of the outer section and fixedly connected with the outer section, the inner section can limit the bearing of the gear box, and the outer section can be detachably connected with the box body of the gear box; the inner section is an inner ring, and the inner side of the inner ring can be fixed in the bearing ring direction of the gearbox;

the outer section comprises an outer ring with a set length, a first ring-shaped piece extends outwards from one side of the outer ring, a limiting piece is arranged on the end face of the first ring-shaped piece relative to the outer ring, the limiting piece is provided with a size measuring groove used for measuring the size of the oil retainer mounting seat, the limiting piece is partially fixed on the first ring-shaped piece, and partially arranged at the hollow position of the outer ring; the limiting part comprises at least two arc-shaped sections, and the two adjacent arc-shaped sections are arranged at intervals with a set distance to form the size measuring groove.

2. The guard for replacing a slinger according to claim 1, characterized in that an inner side wall of said inner segment is disposed beyond an inner side wall of said retainer as viewed in a radial direction of said first guard member.

3. The guard for replacing a slinger according to claim 1, further comprising a second guard member sealingly connectable with said first guard member.

4. The guard for oil slinger replacement according to claim 3 wherein said second guard member includes a base body connectable to said first guard member, the base body being an annular member and the inside of the base body being curved toward the inner end face of the base body to form a groove for receiving the seal ring.

5. The guard for oil slinger replacement according to claim 4 wherein said retainer has a set thickness and a step is provided on a side of said retainer adjacent said inner segment for engaging said seal ring.

6. A removable platform, comprising a platform body on which a guard for replacing a slinger according to any one of claims 1-5 is placed.

7. A mounting platform according to claim 6 wherein the platform body is provided with a slot for receiving the first guard member.

8. A method for replacing a slinger, characterized by comprising the following steps:

placing the gear box on a station, and removing a gear box sealing cover and a bearing cover;

thermally withdrawing the oil scraper ring of the gear box in a heating mode;

mounting the first shield component of any one of claims 1-2 to a gearbox;

polishing and repairing the mounting seat of the oil deflector of the gear box;

mounting a second shield member according to any one of claims 3 to 5 at the outer end of the first shield member;

carrying out magnetic particle inspection on the mounting seat of the oil deflector of the gear box;

disassembling the second protective component;

measuring the size of the mounting seat of the oil deflector of the gear box, and selecting and matching a proper oil deflector of the gear box;

and (5) disassembling the first protective component and installing a gear box oil scraper ring.

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