CN212351855U - Bearing extracting tool with split type step cover - Google Patents

Abstract

The utility model relates to a bearing extracting tool with split type step cover, including split type step cover and ejector pin, be equipped with assorted screw thread step cover screw thread and ejector pin screw thread on split type step cover and ejector pin respectively, be equipped with flat, second step, location portion and first step on split type step cover, be equipped with the handle on the ejector pin. When the split type step sleeve is used, the split type step sleeve penetrates through an inner hole of the bearing, the first step clamps the end face of the bearing, the wrench clamps the flat part, and the bearing can be ejected out by rotating the ejector rod. The utility model discloses simple structure, it is with low costs, convenient operation can tear the bearing out fast, and difficult damage bearing.

Description

Bearing extracting tool with split type step cover

Technical Field

The utility model relates to a mechanical extracting tool especially relates to a bearing extracting tool with split type step cover, belongs to mechanical assembly technical field.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The problem that the precision of the bearing is lost easily due to improper installation or long-time use is solved, and the bearing needs to be disassembled and replaced by a new bearing.

The bearing in the blind hole is usually disassembled by adopting a method of sliding hammer impact or puller pulling. When the sliding hammer impacts, the lower part of the sliding hammer is generally connected with an expansion sleeve, the bearing is pulled out by a sliding hammer impacting method after being tensioned, the operation is complex, the bearing can be pulled out only by impacting for many times, the operation is laborious, and the bearing is easy to damage. The puller pulling-out is a better method, but the puller on the market is mostly universal, and is mostly suitable for a bearing with a larger inner hole due to the structural limitation of the puller, the puller of a small hole bearing is few, and in addition, the puller on the market mostly has the problems of more parts, complex structure and higher cost.

Disclosure of Invention

The to-be-solved technical problem of the utility model is not enough to above-mentioned current bearing extracting tool technique, provides a bearing extracting tool with split type step cover, not only simple structure, with low costs, convenient operation, difficult damage bearing moreover.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is:

the utility model provides a bearing extracting tool with split type step cover, includes split type step cover and ejector pin, its characterized in that: the split type step sleeve is provided with a first step, and the split type step sleeve and the ejector rod are respectively provided with a thread of the thread step sleeve and a thread of the ejector rod which are matched.

Preferably, the split type step sleeve is further provided with a second step.

Preferably, the split step sleeve is provided with a flat.

Preferably, the split step sleeve is provided with a positioning part, and the positioning part is matched with the diameter of an inner hole of the bearing.

Preferably, the first step of the split type step sleeve is provided with a cutting edge.

Preferably, the ejector rod is an inner hexagonal screw or an outer hexagonal screw.

Preferably, a handle is further arranged on the ejector rod.

The beneficial effects of the utility model reside in that: the utility model discloses a split type step cover and ejector pin only have two parts, and the structure is very simple, with low costs also. Split type step sheathe in and be equipped with ejector pin assorted screw thread, sheathe in at split type step still is provided with first step, flat, location portion and second step, earlier in the bearing hole is gone into with split type step cover card during the use, then with the ejector pin screw in split type step cover in the screw thread, can use the spanner to block flat when necessary, prevent that split type step cover from rotating along with the bearing inner circle together, then rotatory ejector pin drives split type step cover and bearing and removes together, tears out the bearing, convenient operation, difficult damage bearing.

Drawings

Fig. 1 is a schematic view of the overall structure of a bearing dismounting tool with a split step sleeve according to the present invention;

fig. 2 is a bottom view of the bearing disassembling tool with a split step sleeve of the present invention;

FIG. 3 is a schematic view of a tooth-shaped edge cut of the bearing disassembling tool with a split step sleeve according to the present invention;

FIG. 4 is a first embodiment of the present invention showing a bearing removal tool with a split step sleeve;

FIG. 5 is a second embodiment of the present invention showing a bearing removal tool with a split step sleeve;

in the figure: 1. a split type step sleeve; 1-0 flat; 1-1 step sleeve thread; 1-2 second steps; 1-3 a positioning section; 1-4 first steps; 1-5, trimming; 1-6 tooth-shaped trimming; 2. a top rod; 2-1, a mandril thread; 2-2, a handle; 3. a bearing; 4. and a bearing seat.

Detailed Description

The structure and operation of the present invention will be described with reference to fig. 1-5.

As shown in figure 1, the utility model relates to a bearing extracting tool with split type step cover includes split type step cover 1 and ejector pin 2. The split type step sleeve 1 is provided with a flat 1-0, a step sleeve thread 1-1, a second step 1-2, a positioning part 1-3 and a first step 1-4. The ejector rod 2 is provided with an ejector rod thread 2-1 which is matched with the step sleeve thread 1-1.

With reference to fig. 1 and 4, the split type step sleeve 1 is provided with first steps 1 to 4, and after the two split bodies of the split type step sleeve 1 respectively pass through the inner holes of the bearing 3, the first steps 1 to 4 can clamp the end face of the bearing 3, and then the bearing 3 is ejected out by the first steps.

With reference to fig. 1 and 4, the split-type step sleeve 1 is further provided with second steps 1-2, and after the split-type step sleeve 1 penetrates through the bearing 3, the split-type step sleeve 1 can be axially positioned by the second steps 1-2, so that the threads on the two split bodies of the split-type step sleeve are axially aligned after the split-type step sleeve 1 penetrates through the bearing 3. The axial distance between the first step 1-4 and the second step 1-2 is equal to or slightly larger than the thickness of the bearing.

With reference to fig. 1 and 4, the diameter of the positioning portion 1-3 is matched with the inner hole of the bearing 3, and is equal to or slightly smaller than the diameter of the inner hole of the bearing 3, after the split-type step sleeve 1 passes through the inner hole of the bearing 3, the positioning portion 1-3 is matched with the inner hole of the bearing 3, so that the split-type step sleeve 1 is prevented from being skewed when the ejector rod 2 is used for ejecting the bearing 3. When the ejector rod 2 is rotated, the situation that the split type step sleeve 1 rotates along with the inner ring of the bearing 3 is possible, the split type step sleeve 1 is prevented from rotating along with the inner ring of the bearing 3 by clamping the flat 1-0 with a wrench, and therefore the split type step sleeve 1 is ensured to reliably eject the bearing 3.

With reference to fig. 1, 2 and 4, the width of the slit between the two separated bodies of the split-type step sleeve 1 is greater than the difference between the diameter of the first step 1-4 and the diameter of the positioning part 1-3. When the width of a cutting seam between two split bodies of the split type step sleeve 1 is larger than the difference value between the diameter of the first step 1-4 and the diameter of the positioning part 1-3, the maximum size of the first step 1-4 after the two split bodies are combined is smaller than the diameter of the positioning part 1-3, namely smaller than the inner hole of the bearing 3, so that the two split bodies can be smoothly penetrated into the bearing 3, and the bearing 3 can be detached.

As shown in fig. 2, which is a bottom view of fig. 1, the first step 1-4 is provided with a cut edge 1-5, and the cut edge 1-5 is linear. Because the diameter of the step at the lower end of the split type step sleeve 1 is larger than the diameter of the positioning parts 1-3, and the diameters of the positioning parts 1-3 are matched with the inner hole of the bearing 3, under the condition that the width of the cutting seam between the two split bodies is insufficient, the condition that the first step 1-4 cannot penetrate through the inner hole of the bearing can possibly occur, and the split type step sleeve 1 can conveniently penetrate through the inner hole of the bearing 3 by adding the trimming 1-5 at the moment, so that the operation is more convenient.

As shown in fig. 3, which is a bottom view of fig. 1, the first steps 1-4 are further provided with tooth-shaped cut edges 1-6. With reference to fig. 4, the bearing 3 in fig. 4 is a needle bearing, and because the wall thickness is generally thin, if the first steps 1-4 still adopt a circular ring structure, because the diameter of the first step 4 is limited by the positioning step of the bearing 3, the diameter of the first step 4 can only be reduced correspondingly, the contact area between the first step 4 and the bearing 3 is also reduced, the strength is also affected, and the drawing effect is further affected. The tooth-shaped cutting edges 1-6 are arranged on the first steps 1-4, so that the contact area between the first steps 1-4 and the bearing 3 can be increased, the strength is improved, the bearing 3 can be reliably pulled out, and meanwhile, enough positioning steps are reserved for the bearing 3. When the first steps 1-4 are provided with the tooth-shaped cut edges 1-6, the bearing seat 4 is required to be provided with a tooth-shaped cavity matched with the tooth-shaped steps, so that the tooth-shaped cut edges 1-6 can be clamped into the tooth-shaped cavity of the bearing seat 4.

Fig. 4 shows a first embodiment of the bearing dismounting tool with a split type step sleeve according to the present invention, wherein a handle 2-2 is further disposed on the top rod 2, and the handle 2-2 can directly eject the bearing 3 by manually rotating the top rod 2, without the aid of a tool, so that the operation is more convenient.

The use process comprises the following steps:

the following describes a method for using the bearing dismounting tool with a split step sleeve according to the present invention with reference to fig. 4. When the split type step sleeve is used, one split body of the split type step sleeve 1 penetrates through an inner hole of the bearing 3, the first step 1-4 faces downwards, the upper end face of the first step 1-4 is clamped on the lower end face of the bearing 3 after penetrating through the bearing 3, the positioning portion 1-3 is attached to the inner hole of the bearing 3, the other split body of the split type step sleeve 1 is installed in the same method, then the handle 2-2 of the ejector rod 2 is rotated by hand, the split type step sleeve 1 is propped open by the ejector rod 2 along with the screwing of the ejector rod 2, the positioning portion 1-3 is attached to the inner hole of the bearing 3, and the split type step sleeve 1 is guaranteed not to be inclined when. After the ejector rod 2 contacts the bottom surface of the bearing seat 4, the handle 2-2 is rotated continuously, the situation that the split type step sleeve 1 rotates along with the inner ring of the bearing 3 possibly occurs at the moment, the flat ring 1-0 is clamped by using a wrench, the split type step sleeve 1 can be prevented from rotating along with the inner ring of the bearing 3, and the split type step sleeve 1 and the bearing 3 can be driven to move outwards together by continuously rotating the ejector rod 2 until the bearing 3 is ejected out.

Fig. 5 shows a second embodiment of the bearing dismounting tool with a split step sleeve according to the present invention, and the method for assembling the split step sleeve 1 is the same as that shown in fig. 4. The difference lies in that the ejector rod 2 of fig. 5 is an inner hexagon screw, but the ejector rod 2 can also be an outer hexagon bolt, and the operation needs to be performed by an inner hexagon wrench, a solid wrench, an adjustable wrench and the like, and an electric or pneumatic tool can be used to match the inner hexagon wrench, a sleeve and the like, so that the operation is more convenient and labor-saving. In addition, the bearing 3 shown in fig. 5 is a deep groove ball bearing, when the ejector rod 2 is operated to eject the bearing 3, the situation that the split type step sleeve 1 rotates along with the inner ring of the bearing 3 may occur at this time, and the split type step sleeve 1 can be prevented from rotating along with the inner ring of the bearing 3 by clamping the flat 1-0 with a wrench, so that the bearing 3 is ejected reliably.

After the technical scheme is adopted, the utility model discloses a set up split type step cover 1 and ejector pin 2, set up the assorted screw thread on split type step cover 1 and ejector pin 2, during the use with split type step cover 1 hole that passes bearing 3, first step 1-4 blocks bearing 3 terminal surface, the spanner blocks flat 1-0, can ejecting bearing 3 through rotatory ejector pin 2, simple structure, with low costs, convenient operation can tear bearing 3 out fast, and difficult damage bearing 3.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a bearing extracting tool with split type step cover, includes split type step cover (1) and ejector pin (2), its characterized in that: the split type step sleeve (1) is provided with a first step (1-4), and the split type step sleeve (1) and the ejector rod (2) are respectively provided with a thread step sleeve thread (1-1) and an ejector rod thread (2-1) which are matched.

2. The bearing dismounting tool with the split-type step sleeve is characterized in that the split-type step sleeve (1) is further provided with a second step (1-2).

3. The bearing dismounting tool with the split-type step sleeve is characterized in that the split-type step sleeve (1) is provided with a flat (1-0).

4. The bearing dismounting tool with the split-type step sleeve is characterized in that the split-type step sleeve (1) is provided with a positioning part (1-3), and the positioning part (1-3) is matched with the diameter of an inner hole of the bearing (3).

5. The bearing dismounting tool with the split-type step sleeve is characterized in that the first step (1-4) of the split-type step sleeve (1) is provided with a cutting edge (1-5).

6. The bearing dismounting tool with the split type step sleeve is characterized in that the ejector rod (2) is an inner hexagonal screw or an outer hexagonal screw.

7. The bearing disassembling tool with the split type step sleeve is characterized in that a handle (2-2) is further arranged on the ejector rod (2).

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