CN213562321U

CN213562321U - Bearing withdrawing tool

Info

Publication number: CN213562321U
Application number: CN202021886473.3U
Authority: CN
Inventors: 向奕然; 何万青; 段顺星
Original assignee: Zhejiang Hongyun Industrial Co ltd
Current assignee: Zhejiang Hongyun Industrial Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-06-29
Anticipated expiration: 2030-09-02

Abstract

The utility model relates to a maintenance tool, and discloses a bearing withdrawing tool, wherein the outer wall of a traction rod is provided with a traction external thread, a traction hole penetrates through the rod body of a positioning rod, the inner wall of the traction hole is provided with a traction internal thread, and the traction external thread is in threaded fit with the traction internal thread; a holding piece is arranged at one end of the traction rod, and a plurality of elastic sheets are circumferentially arranged at the other end of the traction rod; one end of the elastic sheet far away from the traction rod is provided with a clamping hook extending outwards; be provided with actuating mechanism on the traction lever and outwards open with the drive shell fragment, the utility model discloses a move back the bearing frock, open through actuating mechanism control shell fragment to make pothook joint to the lower terminal surface of end cover bearing inner circle. The locating rods can form support points above the end cap bearings. After the positioning rod is supported, the traction rod is driven to rotate in the circumferential direction by means of the holding piece, and due to the matching between the traction external threads and the traction internal threads, the traction rod can perform axial linear motion on the rod body of the positioning rod, so that the end cover bearing is pulled out of the end cover.

Description

Bearing withdrawing tool

Technical Field

The utility model relates to a repair tools especially relates to move back bearing frock.

Background

In the production or repair process, for the end cover with the closed front end, a maintenance worker cannot reversely extrude the end cover bearing out of the end cover body. If the end cover needs to be taken out forcibly, the original material is easy to damage, so that the end cover is damaged, and therefore a bearing withdrawing tool is needed urgently, and the installed end cover bearing can be withdrawn on the premise of not damaging the end cover.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's shortcoming, provide a move back bearing frock, can withdraw from the end cover bearing of having installed under the condition of not destroying the end cover.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a bearing withdrawing tool comprises a traction rod and a positioning rod, wherein the outer wall of the traction rod is provided with a traction external thread, a rod body of the positioning rod penetrates through a traction hole, the inner wall of the traction hole is provided with a traction internal thread, and the traction external thread is in threaded fit with the traction internal thread; a holding piece is arranged at one end of the traction rod, a plurality of elastic sheets are circumferentially arranged at the other end of the traction rod, and the elastic sheets are long-strip-shaped and arranged along the length direction of the traction rod; one end of the elastic sheet far away from the traction rod is provided with a clamping hook extending outwards; the traction rod is provided with a driving mechanism for driving the elastic sheet to open outwards.

Preferably, the driving mechanism comprises a driving groove penetrating along the length direction of the traction rod, a driving rod penetrates through the driving groove in a sliding manner, a driving block located in a space surrounded by the elastic sheet is arranged at one end, close to the elastic sheet, of the driving rod, a conical surface is arranged on the outer wall of the driving block, and the outer diameter of the end face, close to the clamping hook, of the driving block is larger than that of the end face, far away from the clamping hook, of the driving block; the driving rod is also provided with a driving assembly for driving the driving rod to perform reciprocating linear motion in the driving groove.

Preferably, the driving assembly comprises a threaded rod, the threaded rod is integrally arranged at one end, far away from the driving block, of the driving rod and exceeds a port of the driving groove, a driving lever is arranged on the threaded rod, and a threaded hole is formed in the rod body of the driving lever in a penetrating mode so that threads of the threaded rod can penetrate through the threaded hole.

Preferably, the end surface of the driving block close to the driving rod extends to form a screw, and the end surface of the driving rod close to the driving block is provided with a screw hole for screwing the screw.

Preferably, the holding piece is in a long rod shape, a square hole penetrates through the rod body of the holding piece, and the draw bar is provided with a square outer wall close to the end part of the draw bar so as to be sleeved with the square hole.

Preferably, a cutting gap is arranged between the adjacent elastic sheets, and a round hole is formed in the end part of the cutting gap.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: when the elastic sheet is in a closed state, the outer diameter formed by surrounding the elastic sheet is smaller, and the elastic sheet can extend into the inner ring of the installed end cover bearing. Because a gap is reserved between the end cover bearing and the bottom of the mounting groove, the clamping hook on the elastic sheet can just extend into the gap. And then the elastic sheet is controlled to be opened through the driving mechanism so that the clamping hook is clamped to the lower end face of the inner ring of the end cover bearing, and therefore the axial locking between the elastic sheet and the end cover bearing is completed. The positioning rod can form a suspension supporting point above the end cover bearing. After the positioning rod is supported, the traction rod is driven to rotate in the circumferential direction by means of the holding piece, and due to the fact that the traction external threads are matched with the traction internal threads in the threaded mode, the traction rod can move linearly in the axial direction on the rod body of the positioning rod, so that the end cover bearing is pulled out of the end cover, and the end cover structure cannot be damaged.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a sectional view of the present embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

fig. 5 is an exploded view of the present embodiment.

The names of the parts indicated by the numerical references in the above figures are as follows: 1. a draw bar; 2. positioning a rod; 3. drawing the external thread; 4. a drawing hole; 5. drawing the internal thread; 6. a grip; 7. a spring plate; 8. a hook; 9. a drive slot; 10. a drive rod; 11. a drive block; 12. a conical surface; 13. a threaded rod; 14. driving a deflector rod; 15. a threaded hole; 16. a screw; 17. a screw hole; 18. a square hole; 19. a square outer wall; 20. cutting the gap; 21. a circular hole; 22. an end cap bearing; 23. an end cap body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 5, the tool for removing a bearing disclosed in this embodiment includes a drawbar 1 and a positioning rod 2, wherein the drawbar 1 is perpendicular to a rod body of the positioning rod 2. The outer wall of the traction rod 1 is provided with a traction external thread 3, a traction hole 4 is formed in the rod body of the positioning rod 2 in a penetrating mode, the traction hole 4 is preferably arranged in the middle of the positioning rod 2, a traction internal thread 5 is arranged on the inner wall of the traction hole 4, and the traction external thread 3 is in threaded fit with the traction internal thread 5, so that circumferential rotation of the traction rod 1 on the positioning rod 2 can be converted into linear motion along the length direction of the traction rod 1. One end of the traction rod 1 is provided with a holding piece 6, the holding piece 6 is in a long rod shape, the rod body of the holding piece 6 is perpendicular to the rod body of the traction rod 1 and penetrates through a square hole 18, and the square hole 18 is preferably arranged in the middle of the holding piece 6. The drawbar 1 is provided with a square outer wall 19 near its end for the square hole 18 to fit over, so that the user can turn the drawbar 1 with the aid of the grip 6 with more effort. A plurality of elastic sheets 7 are circumferentially arranged at the other end of the traction rod 1, the elastic sheets 7 are preferably made of stainless steel, so that the traction rod has better elasticity and rigidity, and the elastic sheets 7 are long-strip-shaped and are arranged along the length direction of the traction rod 1. And be provided with cutting clearance 20 between the adjacent shell fragment 7, the tip of cutting clearance 20 is provided with round hole 21, avoids cutting clearance 20's tip stress concentration and leads to the fracture to the life of extension shell fragment 7. The end of the elastic sheet 7 far away from the traction rod 1 is provided with a hook 8 extending outwards, and the hook 8 is also made of stainless steel and is integrated with the elastic sheet 7.

Furthermore, the traction rod 1 is provided with a driving mechanism for driving the elastic sheet 7 to expand outwards. In this embodiment, the driving mechanism comprises a driving groove 9 penetrating along the length direction of the drawbar 1, the driving groove 9 is preferably cylindrical, a driving rod 10 is slidably arranged in the driving groove 9, and the driving rod 10 is preferably a round rod to adapt to the shape of the driving groove 9. One end of the driving rod 10 close to the elastic sheet 7 is provided with a driving block 11 positioned in a space enclosed by the elastic sheet 7, the outer wall of the driving block 11 is provided with a conical surface 12, and the outer diameter of the end surface of the driving block 11 close to the hook 8 is larger than that of the end surface of the driving block 11 far away from the hook 8. The driving rod 10 is further provided with a driving assembly for driving the driving rod 10 to perform reciprocating linear motion in the driving slot 9. In this embodiment, the driving assembly includes a threaded rod 13, the threaded rod 13 is integrally disposed at one end of the driving rod 10 away from the driving block 11 and exceeds a port of the driving groove 9, a driving rod 14 is disposed on the threaded rod 13, a threaded hole 15 is disposed through a shaft of the driving rod 14 for the threaded rod 13 to thread, and the threaded hole 15 is preferably disposed at a middle position of the driving rod 14.

Furthermore, the end surface of the driving block 11 close to the driving rod 10 is extended with a screw rod 16, and the screw rod 16 is preferably arranged at the center of the end surface of the driving block 11; the end surface of the driving rod 10 close to the driving block 11 is provided with a screw hole 17 for screwing the screw 16, and the screw hole 17 is preferably arranged at the center of the end surface of the driving rod 10. The cooperation between screw rod 16 and screw 17, simple structure can realize the quick assembly disassembly between drive block 11 and the actuating lever 10, and the drive block 11 of being convenient for is changed and is maintained, and is more humanized.

The specific using process is as follows:

taking the end cover body 23 with a certain depth as an example, the end cover bearing 22 is installed in the bottom installation groove of the end cover body 23, and a gap is reserved between the bottom of the installation groove and the end surface of the end cover bearing 22. When the bearing is withdrawn, one end of the traction rod 1 with the elastic sheet 7 extends into the end cover body 23, and two ends of the positioning rod 2 can abut against two sides of the port of the end cover body 23. At this time, since the elastic sheet 7 is in the closed state, the outer diameter formed by the elastic sheet 7 around the inner ring is small, and the elastic sheet can be inserted into the inner ring of the end cover bearing 22, so that the hook 8 at the end of the elastic sheet 7 is positioned below the end cover bearing 22. The driver 14 is then tightened and the driver rod 10 can be lifted with the circumferential rotation of the driver 14 by engaging the threaded bore 15 with the threaded rod 13, thereby lifting the driver block 11. The elastic sheet 7 can be expanded outwards under the guidance of the conical surface 12 of the driving block 11, so that the hook 8 is clamped on the lower end surface of the end cover bearing 22, and the axial locking between the elastic sheet 7 and the end cover bearing 22 is completed. Subsequently, the traction rod 1 is rotated circumferentially by means of the grip 6, and the traction rod 1 can be lifted by the engagement of the traction male thread 3 with the traction female thread 5, so that the end cap bearing 22 is pulled out of the end cap body 23. In the process, the inner ring of the end cover bearing 22 can synchronously rotate circumferentially along with the traction rod 1, so that the elastic sheet 7 and the hook 8 cannot move relative to the inner ring of the end cover bearing 22.

When the end cover bearing 22 is taken out, the driving lever 14 is unscrewed reversely, so that the driving rod 10 can slide reversely in the driving groove 9, the driving block 11 is reset, the elastic sheet 7 is restored, and the hook 8 is separated from the inner ring of the end cover bearing 22. At this point, the user can remove the end cap bearing 22 from the resilient tab 7.

Claims

1. The utility model provides a move back bearing frock which characterized in that: the traction rod comprises a traction rod (1) and a positioning rod (2), wherein a traction external thread (3) is arranged on the outer wall of the traction rod (1), a traction hole (4) penetrates through the rod body of the positioning rod (2), a traction internal thread (5) is arranged on the inner wall of the traction hole (4), and the traction external thread (3) is in threaded fit with the traction internal thread (5); a holding piece (6) is arranged at one end of the traction rod (1), a plurality of elastic sheets (7) are circumferentially arranged at the other end of the traction rod (1), and the elastic sheets (7) are long-strip-shaped and are arranged along the length direction of the traction rod (1); one end of the elastic sheet (7) far away from the traction rod (1) is provided with a clamping hook (8) extending outwards; the traction rod (1) is provided with a driving mechanism to drive the elastic sheet (7) to open outwards.

2. The bearing withdrawing tool as claimed in claim 1, wherein: the driving mechanism comprises a driving groove (9) penetrating along the length direction of the traction rod (1), a driving rod (10) penetrates through the driving groove (9) in a sliding mode, a driving block (11) located in a space enclosed by the elastic sheet (7) is arranged at one end, close to the elastic sheet (7), of the driving rod (10), a conical surface (12) is arranged on the outer wall of the driving block (11), and the outer diameter of the end face, close to the clamping hook (8), of the driving block (11) is larger than that of the end face, far away from the clamping hook (8), of the driving block (11); the driving rod (10) is also provided with a driving component for driving the driving rod (10) to do reciprocating linear motion in the driving groove (9).

3. The bearing withdrawing tool as claimed in claim 2, wherein: the driving assembly comprises a threaded rod (13), the threaded rod (13) is integrally arranged at one end, far away from the driving block (11), of the driving rod (10) and exceeds a port of the driving groove (9), a driving rod (14) is arranged on the threaded rod (13), and a rod body of the driving rod (14) penetrates through a threaded hole (15) to enable the threaded rod (13) to be threaded.

4. The bearing withdrawing tool as claimed in claim 2, wherein: the end face of the driving block (11) close to the driving rod (10) extends to form a screw rod (16), and the end face of the driving rod (10) close to the driving block (11) is provided with a screw hole (17) for the screw rod (16) to be screwed.

5. The bearing withdrawing tool as claimed in claim 1, wherein: the holding piece (6) is in a long rod shape, a square hole (18) penetrates through the rod body of the holding piece, and a square outer wall (19) is arranged at the position, close to the end part of the draw bar (1), so that the square hole (18) can be sleeved with the draw bar.

6. The bearing withdrawing tool as claimed in claim 1, wherein: a cutting gap (20) is arranged between the adjacent elastic sheets (7), and a round hole (21) is arranged at the end part of the cutting gap (20).