CN114012652A

CN114012652A - Integrated gearbox bearing drawing device and drawing method

Info

Publication number: CN114012652A
Application number: CN202111117383.7A
Authority: CN
Inventors: 高敦升; 曹锐; 陆东浩; 蒋帅; 苏浩; 尚军营; 申志超
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-08

Abstract

The invention provides an integral gearbox bearing drawing device and a drawing method, wherein the integral gearbox bearing drawing device comprises a drawing part and a power assembly, the drawing part is suitable for being embedded in a gap between a bearing and a gear, and part of the drawing part is shielded at the end face of the bearing facing the gear; the power assembly comprises a power piece and a connecting piece, one end of the connecting piece is connected with the power piece, and the other end of the connecting piece is connected with the drawing piece; wherein the power part is suitable for disassembling the bearing through the connecting part and the drawing part. In this way, the connecting piece is connected with the drawing piece, the connecting piece is embedded in the gap between the bearing and the gear, and then the connecting piece can apply force to one end face of the bearing when drawing the drawing piece, and the drawing bearing moves towards the direction far away from the gear, so that the bearing can be disassembled.

Description

Integrated gearbox bearing drawing device and drawing method

Technical Field

The invention relates to the technical field of railway vehicles, in particular to an integral type gearbox bearing drawing device and a drawing method.

Background

The week side of gear box driven gear both sides needs to be changed among the rail vehicle maintenance process, to integral gear box, receives the restriction of gear box dead eye size, all dismantles, decomposes driven gear, bearing from the axletree, so leads to the gear hole discrepancy to scrap, and the bearing is dismantled the in-process and also is produced the fish tail to the axletree easily.

Disclosure of Invention

The embodiment of the invention provides an integral gearbox bearing drawing device and a drawing method, which are used for solving the technical problems that an axle is easily scratched and an inner hole of a gear is easily discarded in an out-of-tolerance manner in the bearing dismounting process in the prior art.

The embodiment of the invention provides an integral gearbox bearing drawing device, which comprises: the drawing piece is suitable for being embedded in a gap between the bearing and the gear, and partially covers the end face, facing the gear, of the bearing;

the power assembly comprises a power piece and a connecting piece, one end of the connecting piece is connected with the power piece, and the other end of the connecting piece is connected with the drawing piece; wherein,

the power part is suitable for disassembling the bearing through the connecting part and the drawing part.

According to the integral gearbox bearing drawing device provided by the embodiment of the invention, the drawing piece is in an arc shape matched with the outer surface of the shaft sleeve of the gear.

According to the integral gearbox bearing pulling device provided by the embodiment of the invention, the central angle of the pulling piece is at most 180 degrees; or,

draw the piece including first draw the unit and with first draw unit matched with second draw the unit, first draw the unit with the second draw the unit under the concatenation state, encircle the axle sleeve setting of gear.

According to the integrated gearbox bearing pulling device provided by the embodiment of the invention, the pulling piece is detachably connected with the connecting piece.

According to the integral gearbox bearing drawing device provided by the embodiment of the invention, a plurality of threaded holes are formed in the drawing piece, and the connecting pieces are a plurality of connecting screw rods matched with the threaded holes.

According to the integral gearbox bearing pulling device provided by the embodiment of the invention, the power part comprises a first power part, and the first power part is connected with the connecting part;

the first power part comprises an opening state and a closing state, and in the opening state, the first power part is used for placing an axle; in the closed state, the first power member is used for limiting the axle.

According to the integral type gearbox bearing pulling device provided by the embodiment of the invention, the first power element comprises a first matching element and a second matching element, the first matching element and the second matching element can rotate around the axial direction of the axle, the first matching element comprises a first opening end, and the second matching element comprises a second opening end corresponding to the first opening end;

when the first power part is in an opening state, the first opening end and the second opening end rotate towards directions far away from each other, and an installation space for accommodating the axle is formed; when the first power part is in a closed state, the end face corresponding to the first opening end is attached to the end face corresponding to the second opening end so as to close the installation space.

According to the integral gearbox bearing pulling device provided by the embodiment of the invention, at least one power unit is respectively arranged on the first matching piece and the second matching piece, and the moving direction of the power unit pulling the connecting piece is consistent with the axial direction of the axle;

the power part further comprises a second power part, the second power part comprises a first force application part and a second force application part, the first force application part is connected with the first matching part, the second force application part is connected with the second matching part, the first force application part is suitable for pulling the first matching part to rotate around the axis direction of the axle, and the second force application part is suitable for pulling the second matching part to rotate around the axis direction of the axle.

The integral gearbox bearing pulling device further comprises a positioning assembly, wherein the positioning assembly comprises an elastic positioning plate, an axis positioning piece and a top fixing device;

the elastic positioning plate is placed at the bottom of a gear box for accommodating the gear; the top fixing device is used for matching with the elastic positioning plate to position the gear box in the vertical direction; the axis positioning piece is used for axially positioning the gear box.

The embodiment of the invention also provides a drawing method of the integral gearbox bearing, which comprises the following steps: the drawing piece is downwards embedded in a gap between a bearing and a gear from an upper box cover of the integral gear box, and part of the drawing piece is shielded at the end face of the bearing facing the gear;

and starting the power piece to pull the connecting piece so as to drive the pulling piece to apply force to the end face of the bearing until the bearing is separated from the gear.

According to the integrated gear box bearing drawing device provided by the embodiment of the invention, the power part applies force to the connecting part, the connecting part is connected with the drawing part, and the connecting part is embedded in the gap between the bearing and the gear, so that the connecting part applies force to one end face of the bearing when drawing the drawing part, and the bearing is drawn to move in the direction away from the gear, so that the bearing can be dismounted. The existing disassembly mode needs to decompose the gear and the axle together, and the process can cause the out-of-tolerance scrapping of the inner hole of the gear and the scratching of the axle. And this application embodiment need not dismantle axletree and gear alright in order to demolish the bearing, so can reduce the bearing and dismantle under the state of the fish tail of in-process axletree and not dismantling the gear, guarantee the life of gear.

According to the drawing method of the bearing of the integral gearbox provided by the embodiment of the invention, the drawing piece is embedded in the gap between the bearing and the gear, the connecting piece is drawn by the power piece, the connecting piece draws the drawing piece to apply force to the end face of the bearing, and further the bearing is disassembled under the condition that an axle and the gear are not disassembled, so that the gear is protected from being scrapped due to the fact that the inner hole of the gear is out of tolerance in the axle disassembling process and the bearing is excessively contacted with the axle in the bearing disassembling process to scratch the bearing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic view of an angle structure of a bearing drawing device of an integral gearbox according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of another angle of the integrated gearbox bearing pulling device according to the embodiment of the invention; (ii) a

FIG. 3 is a schematic view of the internal structure of the gear box of FIG. 1 in cooperation with gears, bearings and axles;

FIG. 4 is a schematic view of the gear box of FIG. 3 in combination with gears, bearings and axles, with a pull member and a connecting member;

FIG. 5 is a schematic drawing diagram of the integrated gearbox bearing pulling apparatus according to an embodiment of the present invention;

FIG. 6 is another schematic view of the drawing member shown in FIG. 4;

FIG. 7 is a flow chart of a method for drawing an integral gearbox bearing according to an embodiment of the present invention;

reference numerals:

10. drawing the piece; 110. a first drawing unit; 120. a second drawing unit; 130. a threaded hole; 140. a projection;

20. a power assembly; 210. a power member; 2110. a first power member; 2111. a first mating member; 21110. a first open end; 21111. a first connection end; 2112. a second mating member; 21120. a second open end; 21121. a second connection end; 2113. a power unit; 2114. an installation space; 2120. a second power member; 2121. a first force application member; 2122. a second force applying member; 220. a connecting member; 230. a positioning assembly; 2310. an elastic positioning plate; 2320. an axis locator; 2321. a first support column; 2322. a second support column; 2323. positioning a pin shaft; 2324. a limiting block; 23241. a first limit unit; 23242. a second limit unit; 2330. a top fixture; 2331. a support bar; 2332. rotating the limiting rod; 240. a base plate;

30. a bearing;

40. a gear;

50. a gear case; 510. a gearbox bearing bore;

60. an axle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

Referring now to fig. 1 to 6, the present invention provides an integrated gearbox bearing pulling apparatus adapted to remove a bearing 30 fixed to a sleeve of a gear 40.

Referring to fig. 1 to 4, the integrated gearbox bearing pulling device comprises a pulling piece 10 and a power assembly 20, wherein the pulling piece 10 is suitable for being embedded in a gap between a bearing 30 and a gear 40, and is partially shielded at an end face of the bearing 30 facing the gear 40. The power assembly 20 comprises a power member 210 and a connecting member 220, one end of the connecting member 220 is connected with the power member 210, the other end of the connecting member 220 is connected with the pulling member 10, and the power member 210 is suitable for detaching the bearing 30 through the connecting member 220 and the pulling member 10.

It should be noted that for the integrated gearbox 50, the clearance between the gearbox bearing bore 510 and the bearing 30 on the gearbox 50 is small, typically 10mm to 12 mm. This is not conducive to removing the bearing 30 by forcing the side of the gear housing 50. The pulling piece 10 provided by the invention can be embedded into a gap between the gear 40 and the bearing 30 from a gap of a box cover on the gear box 50, and at least part of the pulling piece 10 is shielded at the end face of the bearing 30 facing the gear 40, so that when the connecting piece 220 pulls the pulling piece 10, a force can be applied to the end face of the bearing 30, and then the bearing 30 is pulled to move towards the direction far away from the gear 40, so that the bearing 30 can be dismounted, the pulling piece 10 can pull the bearing 30 to be pulled out from a gear box bearing hole 510 of the gear box 50, and therefore, the problem that the bearing 30 is dismounted by manually stretching a hand into the gear box bearing hole 510 in the conventional method for dismounting the bearing 30 is avoided, and the method is time-consuming, labor-consuming and easy to generate potential safety hazards. In other possible embodiments, the pulling element 10 may also be placed in the gap from the gear box bearing hole 510 of the gear box 50, that is, the pulling element 10 is inserted into the gap between the bearing 30 and the gear 40, and then the bearing 30 is pulled out by using the connecting element 220, and the specific detaching manner is the same, which is not described herein too much.

In some embodiments of the present invention, the cross-section in the axial direction of the bearing 30 is circular, the cross-section in the axial direction of the gear 40 is also circular, and when the bearing 30 and the gear 40 are both fitted to the axle 60, the cross-section is also circular at the gap between the bearing 30 and the gear 40. In a possible embodiment of the invention, the puller 10 has an arc shape matching the external surface of the sleeve of the gear 40. For example, the thickness of the drawing member 10 may be smaller than the width of the gap between the bearing 30 and the gear 40, so that when the drawing member 10 applies a force to the bearing 30, the end face of the drawing member 10 may be abutted against an end face of the bearing 30 facing the gear 40, thereby facilitating the application of the force to the bearing 30.

Referring to fig. 3 to 6, in some embodiments of the present invention, the central angle of the drawing member 10 is at most 180 degrees. That is, the drawing member 10 may have a fan shape to be inserted into the gap between the bearing 30 and the gear 40. When the puller 10 is fitted in the gap between the bearing 30 and the gear 40, the puller 10 may be circumferentially disposed around the circumference of the axle 60 with one end face abutting the end face of the bearing 30 toward the gear 40. When the connecting element 220 pulls the pulling element 10, one end surface of the pulling element 10 facing the bearing 30 is completely attached to one end surface of the bearing 30 facing the gear 40, so that the pulling element 10 can completely apply force to the bearing 30 without rotating along with the pulling of the connecting element 220, thereby possibly deviating the pulling element 10 from the axial direction of the bearing 30. That is, it is possible to prevent the drawing member 10 from flying out from the gap between the bearing 30 and the gear 40 to fail to draw out the bearing 30.

Preferably, the central angle of the drawing member 10 may be 180 degrees, and the two ends of the drawing member 10 form the protrusions 140 along the tangential direction of the end portion, so that when the drawing member 10 is installed in the gap between the bearing 30 and the gear 40, the two protrusions 140 of the drawing member 10 can limit the placement position of the drawing member 10, that is, the two protrusions 140 all face the right below the bearing 30, so that the arc-shaped portion of the drawing member 10 can be completely arranged around the circumference of the gap, and further, when the connecting member 220 is pulled, the protrusions 140 also form a clamping connection with the end surface of the bearing 30, and further, it can be avoided that the drawing member 10 rotates relatively when being pulled by the connecting member 220 greatly, and the efficiency of the drawing member 10 for the bearing 30 is affected.

In still other embodiments of the present invention, the drawing member 10 comprises a first drawing unit 110 and a second drawing unit 120, the first drawing unit 110 and the second drawing unit 120 being adapted. That is, the first drawing unit 110 may be provided with a first fitting 2111, the second drawing unit 120 may be provided with a second fitting 2112, and the first fitting 2111 has a first slot and the second fitting 2112 has a second slot, when the first fitting 2111 is matched with the second fitting 2112, the first slot and the second slot are enclosed to form a circle and may be sleeved in the gap between the bearing 30 and the gear 40. For example, referring to fig. 6, the first drawing unit 110 and the second drawing unit 120 may be respectively configured in a semicircular shape, and the first fitting 2111 and the second fitting 2112 may be respectively provided with a connecting hole, so as to connect the first drawing unit 110 and the second drawing unit 120 through a bolt.

Referring to fig. 4 and 5, in some embodiments of the present invention, the drawing member 10 is detachably coupled to the connection member 220. Optionally, a plurality of threaded holes 130 are formed in the drawing member 10, and the connecting member 220 is a plurality of connecting screws adapted to the threaded holes 130. When the drawing member 10 is installed, the drawing member 10 may be first placed in the gap between the bearing 30 and the gear 40, and then the connection between the connection member 220 and the drawing member 10 is completed by connecting the connection screw through the bearing 30 hole of the gear box 50 and the threaded hole 130. The other end of the screw is connected to the power member 210, and when the power member 210 pulls the connecting member 220 along the axial direction of the axle 60, the bearing 30 is pulled to move away from the gear 40 until the disassembly is completed. Preferably, the threaded holes 130 are evenly spaced along the circumference near the outer circumference of the puller 10, and the number may be, but is not limited to, two, three, four or more, etc.

In some embodiments of the present invention, one end of the connecting element 220 is connected to the pulling element 10 and is telescopically arranged, for example, the connecting element 220 is a multi-stage telescopic arrangement, when the pulling element 10 is assembled, the connecting element 220 is in a telescopic state, and when the pulling element 10 is assembled in the gap between the bearing 30 and the gear 40, the connecting element 220 is restored to an extended state, so as to form a connection with the power element 210, so that the power element 210 can pull the pulling element 10 through the connecting element 220.

Referring to fig. 1 and 2, in some embodiments of the present invention, the power member 210 includes a first power member 2110, the first power member 2110 is connected to the coupling member 220, and the first power member 2110 is used for pulling the coupling member 220 to move along the axial direction of the bearing 30. The first power member 2110 includes an opened state and a closed state, and the first power member 2110 is used for supporting the axle 60 in the opened state, the axle 60 is inserted through the gear 40 and the bearing 30, and both ends of the axle 60 extend in a direction away from the gear 40. The first power member 2110 is in a closed state and is used for limiting the axle 60. That is, when the bearing 30 is disassembled, the bearing 30, the gear 40 and the axle 60 are integrated, so that the integrated structure needs to be positioned, that is, the gear box 50 is placed at the position to be disassembled, so that the first power member 2110 is in an open state, the axle 60 can be placed between the first power members 2110, and then the open state of the first power member 2110 is adjusted to a closed state to limit the axle 60, and in the closed state, the pulling direction of the first power member 2110 is consistent with the axial direction of the bearing 30. Because the bearings 30 are arranged on both sides of the gear 40, two first power members 2110 can be arranged on both sides of the gear 40, so that the two bearings 30 can be detached synchronously, and the detaching efficiency of the bearings 30 is improved. In still other embodiments of the present invention, the first power member 2110 may also be disposed on one side of the gear 40, so that the bearing 30 on one side of the gear 40 is removed first, and the bearing 30 on the other side of the gear 40 is removed after the removal is completed, which is not limited herein.

Specifically, the first power member 2110 includes a first fitting 2111 and a second fitting 2112, the first fitting 2111 and the second fitting 2112 are both rotatable about the axial direction of the axle 60, the first fitting 2111 includes a first open end 21110, and the second fitting 2112 includes a second open end 21120 corresponding to the first open end 21110. When the first power member 2110 is in the open state, the first and second opening ends 21110 and 21120 rotate away from each other, and form an installation space 2114 for accommodating the axle 60; when the first power member 2110 is in a closed state, an end surface corresponding to the first opening end 21110 is abutted against an end surface corresponding to the second opening end 21120 to close the installation space 2114.

It should be noted that the first opening end 21110 is located at the top of the first fitting element 2111, the second opening end 21120 is located at the top of the second fitting element 2112, the bottom of the first fitting element 2111 is further provided with a first connection end 21111, and the bottom of the second fitting element 2112 is provided with a second connection end 21121 corresponding to the first connection end 21111. Alternatively, the first connection end 21111 and the second connection end 21121 may be in a connected state all the time, or a gap may be provided between the first connection end 21111 and the second connection end 21121, but the size of the gap is smaller than the diameter of the axle 60, so as to prevent the axle 60 from falling through the gap.

When the first and second mating members 2111 and 2112 are rotated, the first and second open ends 21110 and 21120 can be moved away from each other, thereby forming an open mounting space 2114 at the top of the first power member 2110 for placing the axle 60. When the axle 60 is placed, the first and second opening ends 21110 and 21120 are moved toward each other until they are fitted to close the installation space 2114. The installation space 2114 may be closed, that is, the first connection end 21111 and the second connection end 21121 are in an abutting state, and the first opening end 21110 and the second opening end 21120 are in an abutting state, so that the inner sidewall of the installation space 2114 is attached to the outer sidewall of the axle 60. Alternatively, the mounting space 2114 may be non-enclosed, such as a gap between the first and second open ends 21110 and 21120, and a gap between the first and second connection ends 21111 and 21121, but the gaps are smaller than the diameter of the axle 60, such that the axle 60 is not removed through the gap, i.e., the mounting space 2114 may define the position of the axle 60.

Further, at least one power unit 2113 is provided on each of the first mating member 2111 and the second mating member 2112, and the direction of movement of the power unit 2113 pulling the connecting member 220 coincides with the axial direction of the axle 60. It is understood that the first mating part 2111 and the second mating part 2112 may be respectively provided with one power unit 2113, or may be respectively provided with two, three, four power units 2113, and the like, which is not limited herein.

In some embodiments of the present invention, the power element 210 further includes a second power element 2120, the second power element 2120 includes a first force application element 2121 connected to the first mating element 2111 and a second force application element 2122 connected to the second mating element 2112, the first force application element 2121 is adapted to pull the first mating element 2111 to rotate around the axial direction of the axle 60, and the second force application element 2122 is adapted to pull the second mating element 2112 to rotate around the axial direction of the axle 60.

It should be noted that the integrated gearbox bearing pulling device further includes a base plate 240, one end of the first force applying member 2121 is connected to the first fitting member 2111, and the other end of the first force applying member 2121 is connected to the base plate 240. One end of the second force applying element 2122 is connected to the second fitting element 2112, the other end of the first force applying element 2121 is connected to the base plate 240, and an included angle is formed between the first force applying element 2121 and the second force applying element 2122, so that when the first force applying element 2121 pulls the first fitting element 2111, the first fitting element 2111 can rotate around the axis of the axle 60. Similarly, when the second force application member 2122 pulls the second fitting member 2112, the second fitting member 2112 can rotate around the axial direction of the axle 60.

In a possible embodiment of the present invention, the power unit 2113, the first force application member 2121 and the second force application member 2122 may each employ a hydraulic cylinder as a power element. In other possible embodiments, a cylinder or the like may be used as the power element, and is not limited herein.

In some embodiments of the present invention, a positioning assembly 230 is further included, the positioning assembly 230 including a resilient positioning plate 2310, an axis positioning member 2320 and a top fixing device 2330. The elastic positioning plate 2310 is placed at the bottom of the gear case 50 accommodating the gear 40; the top fixing device 2330 is used to position the gear case 50 in the vertical direction in cooperation with the elastic positioning plate 2310; the axis positioning member 2320 is used to axially position the gear case 50.

The elastic positioning plate 2310 is disposed on the bottom plate 240, and the material of the elastic positioning plate 2310 may be, but is not limited to, rubber. The top fixing device 2330 includes a support rod 2331 connected to the bottom plate 240 and a rotation limiting rod 2332 rotatably connected to the support rod 2331, and the rotation limiting rod 2332 can be rotated to the top of the gear box 50 to cooperate with the elastic positioning plate 2310 to limit the gear box 50 in the vertical direction. The axis positioning member 2320 includes a limiting block 2324 connected to the bottom plate 240, the limiting block 2324 includes a first limiting unit 23241 and a second limiting unit 23242 spaced from the first limiting unit 23241, hole locations are both formed on the first limiting unit 23241 and the second limiting unit 23242, and when one side of the gear box 50 is placed on the first limiting unit 23241 and the second limiting unit 23242, the position of the gear box 50 can be defined by the positioning pin 2323 sequentially passing through the positioning holes reserved on the gear box 50 and the hole locations formed on the first limiting unit 23241 and the second limiting unit 23242. The axis positioning member 2320 further includes a first supporting pillar 2321 and a second supporting pillar 2322 disposed at two sides of the gear box 50, one end of the first supporting pillar 2321 and one end of the second supporting pillar 2322 are connected to the bottom plate 240, and the top of the other end is provided with a limiting groove, so as to limit the axle 60 at two sides of the gear box 50. Optionally, the limiting groove may be, but is not limited to, a V-shaped groove, an arc groove, or a rectangular groove, and the like, which is not described herein in detail.

For the axial positioning of the gear box 50, the first power member 2110 may be first opened, and then the two ends of the axle 60 are respectively placed on the first supporting column 2321 and the second supporting column 2322 to form the axial positioning of the axle 60 and the pulling direction of the first power member 2110. Meanwhile, the gear box 50 is placed on the elastic positioning plate 2310, the gear box 50 is positioned in the vertical direction through the elastic positioning plate 2310 and the top fixing device 2330, and further the positioning of the gear box 50 in the axial direction is realized through the positioning pin 2323. That is, the axial direction of the bearing 30 hole of the gear case 50 is made collinear with the axial direction of the axle 60. In this way, when the power member 210 pulls the connecting member 220 to apply a force to the pulling member 10, the pulling member 10 can detach the bearing 30 and can be taken out through the bearing 30 hole of the gear box 50.

The invention also provides an integral gearbox bearing drawing method, which is realized by adopting the integral gearbox bearing drawing device and comprises the following steps:

110: the drawing piece is downwards embedded in a gap between the bearing and the gear from an upper box cover of the integral gear box, and part of the drawing piece is shielded at the end face of the bearing facing the gear.

It should be noted that the gap between the bearing hole of the integrated gearbox and the bearing is too small, so that the pulling piece is usually selected to be embedded into the gap between the bearing and the gear from the top of the upper cover of the gearbox, and one end face of the pulling piece is abutted to one end face of the bearing facing the gear.

120: and starting the power piece to pull the connecting piece so as to drive the pulling piece to apply force to the end face of the bearing until the bearing is separated from the gear.

In some embodiments of the invention, one end of the connecting piece is connected with the pulling piece, and the other end of the connecting piece is connected with the power piece, so that the power piece pulls the connecting piece to drive the pulling piece to apply force to the bearing, and the bearing can be detached.

It should be noted that, for the integral gearbox, the gap between the bearing hole of the gearbox and the bearing is small, generally 10mm-12mm, which is not beneficial to the side of the gearbox to apply force to disassemble the bearing. The drawing piece provided by the invention can be embedded into a gap between the gear and the bearing from the gap of the upper box cover of the gear box and at least partially shielded at the end face of the bearing facing the gear, so that when the connecting piece pulls the drawing piece, a force can be applied to the end face of the bearing, the bearing is further pulled to move in the direction away from the gear, and the lower bearing is further detached. In other possible embodiments, the pulling member may also be placed from the gear box bearing hole into the gap, and the specific placement manner is not limited herein and may be correspondingly selected according to the size of the actual pulling member.

Before the bearings on two sides of the gear in the integral gearbox are disassembled, the position of the gearbox needs to be limited, and the position of the gearbox includes but is not limited to height and axial position.

For the axial positioning of the gear box, the first power part can be in an open state, and then two ends of the axle are respectively placed on the first supporting column and the second supporting column to form the positioning in the axial direction of the axle and the pulling direction of the first power part. Meanwhile, the gear box is placed on the elastic positioning plate, the gear box is positioned in the vertical direction through the elastic positioning plate and the top fixing device, and the gear box is further positioned in the axis direction through the positioning pin shaft. That is, the axial direction of the bearing hole of the gear case is made collinear with the axial direction of the axle. So, when power spare pulling connecting piece and then application of force in drawing the piece, draw the piece alright with dismantling the bearing and can take out through the dead eye of gear box.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an integral gear box bearing draw-off gear, is suitable for dismantling the bearing that is fixed in on the axle sleeve of gear, its characterized in that includes:

the drawing piece is suitable for being embedded in a gap between the bearing and the gear, and partially covers the end face, facing the gear, of the bearing;

2. The integrated gearbox bearing pulling apparatus of claim 1, wherein the pulling member is in an arc shape matching an outer surface of a sleeve of the gear.

3. The integrated gearbox bearing pulling apparatus of claim 2, wherein the central angle of the pulling member is at most 180 degrees; or,

4. The integrated gearbox bearing pulling apparatus of claim 1, wherein the pulling member is removably connected to the connecting member.

5. The integrated gearbox bearing pulling device according to claim 4, wherein the pulling member is provided with a plurality of threaded holes, and the connecting member is a plurality of connecting screws matched with the threaded holes.

6. The integrated gearbox bearing pulling apparatus of claim 1, wherein the power member comprises a first power member, the first power member being connected to the connecting member;

7. The integrated gear box bearing pulling apparatus as recited in claim 6, wherein the first power member includes a first fitting member and a second fitting member, both of which are rotatable about an axial direction of the axle, the first fitting member includes a first open end, and the second fitting member includes a second open end corresponding to the first open end;

8. The integrated gearbox bearing pulling device as recited in claim 7, wherein at least one power unit is respectively arranged on the first matching piece and the second matching piece, and the power unit pulls the connecting piece to move in a direction consistent with the axial direction of the axle;

9. The integrated gearbox bearing pulling apparatus according to any one of claims 6 to 8, further comprising a positioning assembly, wherein the positioning assembly comprises an elastic positioning plate, an axis positioning piece and a top fixing device;

10. An integrated gearbox bearing drawing method using the integrated gearbox bearing drawing apparatus according to any one of claims 1 to 9, comprising:

the drawing piece is downwards embedded in a gap between a bearing and a gear from an upper box cover of the integral gear box, and part of the drawing piece is shielded at the end face of the bearing facing the gear;