CN218698410U

CN218698410U - Close-fitting multi-bearing dismantles auxiliary fixtures

Info

Publication number: CN218698410U
Application number: CN202222824321.6U
Authority: CN
Inventors: 王伟强; 蔡加良; 黄明姚; 方沥; 石思强
Original assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Current assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-03-24
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a close-fitting multi-bearing dismantles auxiliary fixtures, include: the fixed support is provided with a central through matching hole and at least two mounting arms arranged at intervals along the circumferential direction of the central through matching hole, and each mounting arm is arranged along the radial direction of the central through matching hole; each tensile force arm group comprises at least two tensile force arms which are sleeved on the at least two mounting arms in a sliding manner, and the free ends of the at least two tensile force arms can be enclosed to form a clamping cavity for clamping the bearing; the ejector rod penetrates through the fixing support to be in threaded connection with the central through matching hole, and the abutting end of the ejector rod can abut against the dismounting shaft to match with the at least two stretching force arm groups to pull the bearings away from the dismounting shaft in a threaded rotation state of the ejector rod; wherein, the length of each tensile arm in every tensile force armset is the same, and the length of tensile arm in two arbitrary tensile force armsets is all inequality. The utility model discloses can be in narrow space high-efficient safe completion multi bearings dismantlement.

Description

Close-fitting multi-bearing dismantles auxiliary fixtures

Technical Field

The utility model relates to a turbine frock technical field especially relates to a close-fitting multi-bearing dismantles auxiliary fixtures.

Background

Along with the development of ship construction, the problems of tight construction period and high technical difficulty are often faced, so that higher requirements are provided for equipment installation and disassembly of a shipyard, and the requirements are high and good. However, existing equipment is stored for a long time, the insulation of a generator motor part is low, the motor and a prime motor need to be detached when power supply cannot be started due to the fact that insulation does not meet normal starting conditions, the motor and the prime motor are separated and insulated winding wires of the motor are subjected to insulated paint treatment again, the process relates to detachment of parts such as a high-speed coupler and a motor rotor bearing, tight-fitting double bearings are used at the front end and the rear end of a rotor of the equipment, and how to improve the detaching quality and detaching efficiency of the tight-fitting double bearings is an important subject needing to be researched at present.

High-speed motor rotor front and back end has high-speed bearing, respectively installed 2 bearings around the rotor, and bearing installation interference value reaches between 0.0 ~ 0.02mm, and current installation technology requires that duplex bearing is installed simultaneously and is dismantled simultaneously, uses the hammering to dismantle or draws the ware according to traditional solution, can't realize the requirement that duplex bearing was dismantled simultaneously to cause the tight fit duplex bearing to scrap easily and the bearing pole produces the gross defect and makes bearing and bearing pole damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a close-fitting multi-bearing dismantles auxiliary fixtures for solve among the prior art double-bearing and dismantle difficult problems such as the degree of difficulty is big, consuming time of a specified duration and fragile equipment simultaneously.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a close-fitting multi-bearing dismantles auxiliary fixtures, include:

the fixing support is provided with a central through matching hole and at least two mounting arms arranged at intervals along the circumferential direction of the central through matching hole, and each mounting arm is arranged along the radial direction of the central through matching hole;

each tensile force arm group comprises at least two tensile force arms which are sleeved on the at least two mounting arms in a sliding manner, and the free ends of the at least two tensile force arms can be enclosed to form a clamping cavity for clamping the bearing;

the ejector rod penetrates through the fixing support to be in threaded connection with the central through matching hole, and the abutting end of the ejector rod can abut against the dismounting shaft to match the at least two stretching force arm groups to pull the plurality of bearings away from the dismounting shaft in a threaded rotation state of the ejector rod;

each stretching force arm group is provided with a stretching force arm, wherein the length of each stretching force arm in each stretching force arm group is the same, and the length of each stretching force arm in any two stretching force arm groups is different.

Preferably, each of the tension arms comprises:

a body;

the first horizontal section is connected to one end of the body, and is provided with a through hole so as to be sleeved on the mounting arm in a sliding manner;

the second horizontal segment is connected at the other end of the body, and a groove is formed in the second horizontal segment so as to facilitate clamping of a part of the bearing wall.

Preferably, wherein the included angle between the body and the second horizontal segment is 107 °.

Preferably, the body, the first horizontal section and the second horizontal section are integrally formed.

Preferably, a fixing hole is further formed in the wall surface of the first horizontal section, so that a fixing piece can be inserted to lock and connect the mounting arm and the first horizontal section.

Preferably, the device further comprises a top cap detachably connected to the abutting end to increase the contact area between the top cap and the dismounting shaft.

Preferably, the length of the thread on the outer wall surface of the ejector rod is not less than 250 mm.

Preferably, a handle is detachably connected to the free end of the ejector rod so as to rotate the ejector rod; or the ejector rod is a square screw rod.

Preferably, at least two stretching force arms in the stretching force arm group are uniformly distributed along the circumferential direction of the central through matching hole, and each stretching force arm in the stretching force arm group is arranged corresponding to one mounting arm.

Preferably, wherein, the quantity of tensile force armset is two, every including two in the tensile force armset tensile force arm, the quantity of installation arm is two, and two the installation arm symmetry is laid the both sides in hole are led to in the center.

The utility model discloses characteristics and advantage below having at least:

the utility model relates to an ingenious, convenient operation, the installation of being convenient for, single can the construction, can effectually save the labour, simple high-efficient and can avoid damaging and scratching high-speed bearing and bearing rod. The auxiliary tool replaces the original auxiliary manual hammering, prevents deformation of double bearings in the hammering process, and particularly prevents the bearing rod from being scratched and generating defects due to uneven stress on the double bearings. Thereby prevent to lead to scrapping because bearing and bearing rod damage at later stage repacking in-process to lead to the motor can not repack and cause huge economic loss. This auxiliary fixtures replaces the duplex bearing of dismantling can effectual improvement operating mass with work efficiency, guarantees the qualification rate of product.

Drawings

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

FIG. 1 is a front view of the auxiliary tool for disassembling close-fitting multi-bearing of the present invention;

FIG. 2 is a top view of the close-fitting multi-bearing disassembly auxiliary tool of the present invention;

FIG. 3 is a side view of the close-fitting multi-bearing disassembly auxiliary tool of the present invention;

fig. 4 is a schematic view of the stretching force arm of the present invention;

fig. 5 is a schematic view of the stretching force arm of the present invention;

fig. 6 is the utility model discloses close-fitting multi-bearing dismantles auxiliary fixtures's user state schematic diagram.

Reference numerals and description:

1. a fixed bracket; 11. an internally threaded through bore; 2. a first tension arm; 21. a card slot; 22. a set screw; 23. a through hole; 3. a first tension arm; 31. a card slot; 32. a set screw; 33. a through hole; 4. a second tension arm; 41. a card slot; 42. a set screw; 43. a through hole; 5. a second tension arm; 51. a card slot; 52. a set screw; 53. a through hole; 6. a push rod device; 61. a through hole; 62. an external thread; 7. a top cap; 71. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a close-fitting multi-bearing dismantles auxiliary fixtures please refer to fig. 1 to 6, including fixed bolster, two at least tensile force armsets and ejector pin.

Specifically, the fixed support is provided with a central through matching hole and at least two mounting arms arranged at intervals along the circumferential direction of the central through matching hole, and each mounting arm is arranged along the radial direction of the central through matching hole; each stretching force arm group comprises at least two stretching force arms which are sleeved on the at least two mounting arms in a sliding manner, and the free ends of the at least two stretching force arms can be enclosed to form a clamping cavity for clamping the bearing; the ejector rod penetrates through the fixed support to be in threaded connection with the central through matching hole, and the abutting end of the ejector rod can abut against the dismounting shaft to match with the at least two stretching force arm groups to pull the bearings away from the dismounting shaft in a threaded rotation state of the ejector rod; wherein, the length of each tensile arm in every tensile force armset is the same, and the length of tensile arm in two arbitrary tensile force armsets is all inequality.

In some embodiments, referring to fig. 1 to 5, each of the tension arms includes a body, a first horizontal section, and a second horizontal section. Specifically, the first horizontal section is connected to one end of the body, and the first horizontal section is provided with a through hole which can be sleeved on the mounting arm in a sliding manner; the second horizontal segment is connected at the other end of body, is provided with the recess so that joint part bearing wall on the second horizontal segment.

The utility model discloses a length of second horizontal segment and the length of the tensile arm of force that corresponds can adapt to the bearing of the arbitrary sequencing of diameter size in the same tensile force armset of adjustment, if the diameter grow gradually or diminish, or become big, little, well arrangement or other arbitrary modes along the diameter of a plurality of bearings of same direction.

Further, referring to fig. 4 and 5, the included angle between the body and the second horizontal section is 107 °. Furthermore, the body, the first horizontal section and the second horizontal section are integrally formed.

In some embodiments, referring to fig. 6, the wall surface of the first horizontal segment is further provided with a fixing hole for facilitating the insertion of the fixing member to lock the mounting arm with the first horizontal segment.

In some embodiments, referring to fig. 1, a top cap detachably connected to the abutting end is further included to increase the contact area between the top cap and the detaching shaft.

In some embodiments, referring to fig. 1-3, the length of the threads on the outer wall surface of the stem bar is no less than 250 mm.

In some embodiments, the free end of the push rod is detachably connected with a handle so as to rotate the push rod; in other embodiments, referring to fig. 6, the post rod is a square screw rod.

In some embodiments, referring to fig. 1 to 3, at least two tension arms in the tension arm set are uniformly arranged along the circumferential direction of the central through hole, and each tension arm in the tension arm set is disposed corresponding to one mounting arm.

In some embodiments, the number of the tension force arm sets is two, each tension force arm set comprises two tension force arms, the number of the mounting arms is two, and the two mounting arms are symmetrically arranged on two sides of the central through matching hole.

It will be appreciated by those skilled in the art that the number of tension force armsets can be adjusted according to the number of bearings to be disassembled, and the number of tension force arms in each tension force armset can also be adjusted according to actual force requirements.

The present invention will be further described and illustrated with reference to an embodiment, please refer to fig. 1 to 6:

in this embodiment, referring to fig. 2, the number of the tension arm groups is two (i.e. a first tension arm group and a second tension arm group), each tension arm group includes two tension arms (i.e. the first tension arm group includes a first tension arm 2 and a first tension arm 3, and the second tension arm group includes a second tension arm 4 and a second tension arm 5), the number of the installation arms is two, and the two installation arms are symmetrically arranged on two sides of the central through-mating hole.

As shown in fig. 1 to fig. 3, the utility model discloses a fixed bolster and stretching device, fixed bolster 1 is the cylinder molding, diameter 20mm, length 150mm, and there is internal thread through-hole 11 at the middle part, and internal thread through-hole 11 is M18X 1. The stretching device comprises four stretching force arms. Wherein, first tensile arm of force 2 and first tensile arm of force 3 symmetry set up in order to form tensile force armset, and length is 185mm, and second tensile arm of force 4 and the symmetrical setting of second tensile arm of force 5 are in order to form another tensile force armset, and length is 100mm. The first stretching force arm 2 comprises a clamping groove 21, a fixing screw 22 and a through hole 23. The first stretching force arm 2 is slidably arranged on the fixing support 1 in a penetrating manner through the through hole 23, the width of the diameter of the stretching force arm is adjusted according to the actual diameter size of the detached bearing, and the first stretching force arm is fixed through the fixing screw 22. The first stretching force arm 3 and the first stretching force arm 2 have the same design principle. The first stretching force arm 2 comprises a clamping groove 21, a fixing screw 22 and a through hole 23. The first stretching force arm 4 can be slidably arranged on the fixing support 1 in a penetrating way through the through hole 43, the width of the diameter of the stretching force arm can be adjusted according to the diameter of the practical detachable bearing, and the stretching force arm is fixed through the fixing screw 42. The first tension arm 5 and the first tension arm 4 are designed according to the same principle. The first end of the ejector rod device 6 penetrates out of the fixing support 1, the external thread 62 designed on the ejector rod device 6 can be screwed into the internal thread of the through hole 11, the first end of the ejector rod device 6 is provided with the smooth through hole 62, the auxiliary tool convenient to rotate penetrates into the through hole, and external torque is provided. The second end of the ejector rod device 6 is provided with an ejector cap 7 which is used for being arranged just opposite to the tight-fitting double bearings, and the ejector cap 7 and the second end of the ejector rod device 6 are accurately positioned through a groove 7, so that the ejector rod device 6 and the ejector cap 7 are ensured to be on the same central line.

Based on above structure, when using, mutually support between fixed bolster 1 and first tensile arm of force 2, the first tensile arm of force 3, the width distance between two first tensile arm of force of adjustment for draw-in groove 21, draw-in groove 31 block the marginal terminal surface of big bearing, screw up fixing screw 22 and fixing screw 32 in order to pin first tensile arm of force 2, the first tensile arm of force 3 respectively. In a similar way, the fixed bracket 1 is matched with the second stretching force arm 4 and the second stretching force arm 5, the distance between the second stretching force arms is adjusted, the clamping

grooves

41 and 51 clamp the edge end face of the small bearing, and the fixing screw 42 and the fixing screw 52 are screwed up to lock the second stretching force arm 4 and the second stretching force arm 5. When carrying out the dismantlement of duplex bearing, constructor inserts appurtenance through-hole 62, adjusts ejector pin device 6 for ejector pin device 6 compresses tightly hood 7, and hood 7 compresses tightly the bearing pole center, exerts the power that is greater than the bearing and pulls out to the tensile arm of force of second, and reaction force when fixed bolster 1 can balance the duplex bearing and is pulled out reduces the deformation risk of tight fit duplex bearing when being dismantled. The rotation of ejector pin device 6 can drive fixed bolster 1, the first tensile arm of force 2 on the fixed bolster 1, the first tensile arm of force 3, the effort of the draw-in groove of the tensile arm of force 4 of second, the tensile arm of force 5 of second along the direction of perpendicular to bearing surface, and ejector pin device 6 rotates at the recess 71 center of hood 7, slowly changes the stroke of fixed bolster, draws out big or small duplex bearing. The whole process can carry out high-efficient, high-quality dismantlement to tight fit duplex bearing on the high-speed motor, replaces singly drawing the ware, prevents that in-process duplex bearing centre bore from warping, especially avoids producing the condition of gross defect seriously because bearing hole and fish tail that the duplex bearing atress is uneven leads to. The device has the advantages of simple structural design, convenient operation, low production and manufacturing cost and capability of being popularized and used on different devices.

Wherein, ejector pin device 6 passes through internal thread through-hole 11, installs in the through-hole, convenient to detach, and the screw thread rotates the power of giving the fixed bolster when using moreover more steadily. The structure formed by the large second stretching force arm can better balance the outward moving force of the whole fixed support 1, so that the acting force can be applied to the whole large and small double bearings more stably. The large second stretching force arm can be freely adjusted left and right to adapt to tight-fit duplex bearings of different specifications, and the application range is wider.

Furthermore, the second end part of the ejector rod device 6 is an ejector cap 7, the ejector rod device 6 is designed to be a pointed end, and a groove 71 is formed in the center of the ejector cap 7, so that the matching stability of the ejector rod device 6 and the ejector cap 7 is better guaranteed. The contact area between the ejector cap 7 and the center of the bearing rod (namely, the dismounting shaft) is increased, so that the end face of the bearing rod cannot be damaged by the acting force of the ejector rod device 6, and the ejector rod device is simple, efficient and practical.

In this embodiment, the fixing bracket 1 and the stretching force arm are combined into an integrated structure of the shape of the character 20866, so that the production, the processing and the manufacturing are convenient, and the use is convenient, and the ejector rod device 6 is a detachable tool in the fixing bracket 1, so that the detachable tool can be adapted to the detachment of tight-fitting double bearings with different lengths, and the corresponding popularization is convenient, but in other embodiments, the structural types of the driving part and the driving part are not limited by this embodiment, and when the proper selection can be performed according to actual needs.

The auxiliary fixtures of this embodiment not only can replace the hammering of manpower hammer or replace single puller to prevent that the duplex bearing hole fish tail from producing gross defects, can prevent moreover when the later stage repacking, the risk of tight fit duplex bearing is changed because of the hole damage bore hole again. Through using this close-fitting duplex bearing dismantles auxiliary fixtures, to the dismantlement work of high-speed motor close-fitting duplex bearing, by construction cycle (2 people, 48 hours) of traditional way shorten to 1 person, 4 hours, the work efficiency promotion is showing, and the effectual close-fitting duplex bearing dismantlement work of having guaranteed has shortened the dismantlement of high-speed motor rotor and the prosthetic cycle of winding insulated paint by a wide margin.

The utility model discloses a use as follows, please see fig. 6:

the staff tightens up the ejector pin gradually through the instrument, changes the ejector pin at the inside stroke of fixed bolster for the ejector pin can compress tightly the bearing center, in follow-up adjustment process to the regulating part, makes tensile force arm drive bearing, and even atress makes the duplex bearing remove slowly, removes until accomplishing the dismantlement slowly from the bearing rod. The utility model discloses can accomplish the dismantlement work of fitting duplex bearing on the high-speed electric motor rotor through the cooperation between fixed bolster, stretching device and the ejector pin device, fix a position the bearing through the draw-in groove that forms between fixed bolster and the tensile arm of force and the ejector pin for location that the bearing border can be stable is in the draw-in groove, in order conveniently to carry out subsequent duplex bearing pull-out work.

The utility model relates to an ingenious, convenient operation, the installation of being convenient for, single can the construction, can effectually save the labour, simple high-efficient and can avoid damaging and scratching high-speed bearing and bearing rod. The auxiliary tool replaces the original auxiliary manual hammering, prevents deformation of double bearings in the hammering process, and particularly prevents the bearing rod from being scratched and generating defects due to uneven stress on the double bearings. Thereby prevent to lead to scrapping because bearing and bearing rod damage in the later stage repacking in-process to lead to the motor can not repack and cause huge economic loss. This auxiliary fixtures replaces the duplex bearing of dismantling can effectual improvement operating mass with work efficiency, guarantees the qualification rate of product.

Above, it is only the preferred embodiment of the present invention, and it is not limited to the present invention in any form, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person familiar with the art can make some changes or modifications to equivalent embodiments with equivalent changes within the technical scope of the present invention, but all the technical matters of the present invention do not depart from the technical scope of the present invention.

Claims

1. The utility model provides a close-fitting multi-bearing dismantles auxiliary fixtures which characterized in that includes:

the ejector rod penetrates through the fixing support to be in threaded connection with the central through matching hole, and the abutting end of the ejector rod can abut against the dismounting shaft to match with the at least two stretching force arm groups to pull the bearings away from the dismounting shaft in a threaded rotation state of the ejector rod;

2. The close-fitting multi-bearing disassembly auxiliary tool of claim 1, wherein each tensile force arm comprises:

a body;

3. The close-fitting multi-bearing disassembly auxiliary tool of claim 2, wherein an included angle between the body and the second horizontal section is 107 °.

4. The close-fitting multi-shaft bearing dismounting auxiliary tool according to claim 3, wherein the body, the first horizontal section and the second horizontal section are integrally formed.

5. The close-fitting multi-bearing disassembly auxiliary tool of claim 2, wherein a fixing hole is further formed in the wall surface of the first horizontal section so that a fixing piece can be inserted to lock the mounting arm with the first horizontal section.

6. The close-fitting multi-bearing disassembly auxiliary tool of claim 5, further comprising a top cap detachably connected to the abutting end to increase the contact area between the top cap and the disassembly shaft.

7. The close-fitting multi-bearing disassembly auxiliary tool of claim 6, wherein the length of the thread on the outer wall surface of the ejector rod is not less than 250 mm.

8. The close-fitting multi-bearing disassembly auxiliary tool of claim 6, wherein,

the free end of the ejector rod is detachably connected with a handle so as to rotate the ejector rod; or

The ejector rod is a square screw rod.

9. The close-fitting multi-bearing disassembly auxiliary tool according to claim 6, wherein at least two stretching force arms in the stretching force arm group are uniformly distributed along the circumferential direction of the central through matching hole, and each stretching force arm in the stretching force arm group is arranged corresponding to one installation arm.

10. The close-fitting multi-bearing disassembly auxiliary tool according to any one of claims 1 to 9, wherein the number of the tensile force arm groups is two, each tensile force arm group comprises two tensile force arms, the number of the installation arms is two, and the two installation arms are symmetrically arranged on two sides of the center through matching hole.