CN212146227U - Special device for dismounting intermediate shaft bearing of gearbox - Google Patents
Special device for dismounting intermediate shaft bearing of gearbox Download PDFInfo
- Publication number
- CN212146227U CN212146227U CN202020254525.9U CN202020254525U CN212146227U CN 212146227 U CN212146227 U CN 212146227U CN 202020254525 U CN202020254525 U CN 202020254525U CN 212146227 U CN212146227 U CN 212146227U
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- sleeve
- pull
- gearbox
- pull rod
- bearing
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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses a special device for dismounting a middle shaft bearing of a gearbox, which belongs to the technical field of manufacturing and processing of automobile gearboxes and aims to solve the problem that the bearing inner ring and the middle shaft outer diameter in a middle shaft assembly cannot be dismounted due to transition fit; the ring sleeve is sleeved outside the pull sleeve and used for splicing and fixing the two semicircular pipe parts; the nut is installed on the right side inside the pull sleeve and abuts against the right end face of the pull sleeve, an inner hole of the nut is in threaded connection with the pull rod, the pull rod horizontally penetrates through the right end face of the pull sleeve, and the left end face of the pull rod abuts against the right end face of the intermediate shaft of the gearbox. The device can easily realize the dismantlement of bearing, makes the jackshaft assembly retrieval and utilization after dismantling, saves more than 500 ten thousand yuan of manufacturing cost annually.
Description
Technical Field
The utility model belongs to the technical field of the motor transmission manufacturing and processing, concretely relates to manufacturing and designing is used for dismantling heavy gearbox owner case isolated plant for jackshaft bearing.
Background
At present, because the double-intermediate-shaft structure gearbox has the characteristics of strong bearing capacity, long service life, short axial dimension and suitability for the whole arrangement of a heavy truck, the gearbox with the structure is popular with users, 23 thousands of gearboxes of the model are produced every year in our factory, a bench test needs to be carried out after the gearboxes are assembled, noise detection is carried out, the gearboxes need to be disassembled if the gearboxes are knocked, the disassembling repair rate of the gearboxes in our factory is about 2% (the gearboxes are in a better level in the industry), the disassembled gearbox intermediate shaft assembly needs to be replaced with a gear of a certain gear, and the gear can be disassembled after a bearing at the end part of the intermediate shaft assembly is disassembled, so that the problem intermediate shaft can be reused. Because of being limited by the design structure, bearing inner race and jackshaft external diameter adopt transition fit, and the difficulty is disassembled to the bearing on the jackshaft assembly, adopt omnipotent axle puller unable to disassemble the bearing, lead to whole jackshaft assembly to scrap, and the jackshaft assembly waste product that leads to because the gearbox rings reaches 4600 every year, and the cost of every assembly is 1200 yuan, and the economic loss who leads to from this reaches 550 ten thousand yuan every year, therefore this problem is the problem that needs to solve at present badly.
Disclosure of Invention
In order to solve the unable problem of dismantling that the bearing inner race caused with the jackshaft external diameter adoption transition fit in the jackshaft assembly, the utility model provides a dismantle special device for gearbox jackshaft bearing can be used for dismantling the tip bearing on the jackshaft assembly.
The utility model discloses a following technical scheme realizes:
a kind of special device for disassembling the bearing of intermediate shaft of change-speed gear box, the device is made up of pulling the cover 3, ring cover 4, nut 5 and tie rod 6, wherein, pull the cover 3 and is pieced together by two semicircular pipe parts, pull the end of right side of cover 3 to have round holes to use for cooperating with tie rod 6, pull the end of left side of cover 3 to use for cooperating with interval between intermediate shaft of change-speed gear box and bearing inner race 2; the ring sleeve 4 is sleeved outside the pull sleeve 3 and used for splicing and fixing the two semicircular pipe parts;
the nut 5 is installed on the right side inside the pull sleeve 3 and abuts against the end face of the right side of the pull sleeve 3, an inner hole of the nut 5 is in threaded connection with the pull rod 6, the pull rod 6 horizontally penetrates through the end face of the right side of the pull sleeve 3, and the end face of the left side of the pull rod 6 abuts against the end face of the right side of the intermediate shaft of the gearbox.
Furthermore, the pull sleeve 3 and the ring sleeve 4 are matched with each other by adopting a small gap, so that the fixing firmness is improved; the pull sleeve 3 and the nut 5 are in clearance fit.
The right end of the pull rod 6 is designed into a standard square structure, and can be connected with a standard pneumatic trigger, so that the bearing can be conveniently detached.
The utility model has the advantages that:
the device can easily realize the dismantlement of bearing, makes the jackshaft assembly retrieval and utilization after dismantling, saves more than 500 ten thousand yuan of manufacturing cost annually.
Drawings
Fig. 1 special device for dismounting intermediate shaft
Detailed Description
The technical solution of the present invention will be further explained and illustrated in the following embodiments.
As shown in fig. 1, the special device for dismounting the bearing of the intermediate shaft of the gearbox comprises a pull sleeve 3, a ring sleeve 4, a nut 5 and a pull rod 6, wherein the pull sleeve 3 is formed by splicing two semicircular pipe parts, a round hole is formed in the end face of the right side of the pull sleeve 3 and used for being matched with the pull rod 6, and the end face of the left side of the pull sleeve 3 and the clearance fit between the intermediate shaft of the gearbox and the bearing inner ring 2 are used for being matched; the ring sleeve 4 is sleeved outside the pull sleeve 3 and used for splicing and fixing the two semicircular pipe parts;
the nut 5 is installed on the right side inside the pull sleeve 3 and abuts against the end face of the right side of the pull sleeve 3, an inner hole of the nut 5 is in threaded connection with the pull rod 6, the pull rod 6 horizontally penetrates through the end face of the right side of the pull sleeve 3, and the end face of the left side of the pull rod 6 abuts against the end face of the right side of the intermediate shaft of the gearbox.
In the embodiment, the pull sleeve 3 and the ring sleeve 4 are in clearance fit, so that the fixing firmness is improved; the pull sleeve 3 and the nut 5 are fixed by adopting a clearance fit mode between the pull sleeve 3 and the nut 5.
The right end of the pull rod 6 is designed into a standard square structure, and can be connected with a standard pneumatic trigger, so that the bearing can be conveniently detached.
The disassembly method specifically comprises the following steps:
lay the intermediate shaft assembly 1 waiting to be dismantled on a platform, install nut 5 in drawing set 3 first, will draw the left end of set 3 to install in the annular between intermediate shaft assembly 1 and bearing inner race 2, guarantee to draw set 3 and bearing inner race 2's left end face contact, install ring cover 4 in drawing set 3 department, and fix nut 5 through drawing set 3, prevent it rotatory when atress, screw in pull rod 6 gradually in nut 5 through the aperture on drawing set 3 right side, and rotate all the time, until pull rod 6 pushes up the right side terminal surface of intermediate shaft assembly 1, install standard pneumatic trigger on pull rod 6's right side, under the effect of bolt tightening force, pull out bearing inner race 2 from intermediate shaft assembly 1 gradually, thereby accomplish whole process.
Claims (4)
1. A special device for dismounting a bearing of a middle shaft of a gearbox is characterized by comprising a pull sleeve (3), a ring sleeve (4), a nut (5) and a pull rod (6), wherein the pull sleeve (3) is formed by splicing two semicircular pipe parts, a round hole is formed in the end face of the right side of the pull sleeve (3) and used for being matched with the pull rod (6), and the end face of the left side of the pull sleeve (3) is used for being matched with a gap between the middle shaft of the gearbox and an inner ring (2) of the bearing; the ring sleeve (4) is sleeved outside the pull sleeve (3) and used for splicing and fixing the two semicircular pipe parts;
nut (5) are installed on the inside right side of drawing set (3) to support and lean on drawing set (3) right side terminal surface, the hole and pull rod (6) threaded connection of nut (5), pull rod (6) are followed and are drawn set (3) right side terminal surface level and are penetrated, pull rod (6) left side terminal surface top is on the right side terminal surface of gearbox jackshaft.
2. The special device for disassembling the intermediate shaft bearing of the gearbox is characterized in that a small clearance fit is adopted between the pulling sleeve (3) and the ring sleeve (4).
3. The special device for dismounting the intermediate shaft bearing of the gearbox is characterized in that a clearance fit is adopted between the pulling sleeve (3) and the nut (5).
4. The special device for dismounting the intermediate shaft bearing of the gearbox is characterized in that the right end of the pull rod (6) is designed into a standard square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020254525.9U CN212146227U (en) | 2020-03-04 | 2020-03-04 | Special device for dismounting intermediate shaft bearing of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020254525.9U CN212146227U (en) | 2020-03-04 | 2020-03-04 | Special device for dismounting intermediate shaft bearing of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212146227U true CN212146227U (en) | 2020-12-15 |
Family
ID=73712320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020254525.9U Active CN212146227U (en) | 2020-03-04 | 2020-03-04 | Special device for dismounting intermediate shaft bearing of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212146227U (en) |
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2020
- 2020-03-04 CN CN202020254525.9U patent/CN212146227U/en active Active
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