CN213731535U - Combined puller - Google Patents

Abstract

The utility model discloses a combined puller, which comprises a split pulling sleeve, a nut, a fixed sleeve and a bolt; the combined puller of the utility model has the advantages of convenient operation, time and labor saving, and can realize the disassembly of the bearing in a narrow space, greatly improve the working efficiency and eliminate the hidden trouble of accidental damage of parts of the bearing in the disassembly process; the device has simple structure and manufacture, low manufacture cost and good applicability.

Description

Combined puller

Technical Field

The utility model relates to the technical field of machinery, especially, relate to a combined puller.

Background

The puller is a disassembling tool for separating the bearing from the shaft and mainly comprises a rotating handle, a screw rod and a pulling claw. The bearing has two claws and three claws, and the main sizes are the length of the pulling claw, the distance between the pulling claws and the length of the screw rod so as to adapt to bearings with different diameters and different axial installation depths. The screw rod center is positioned in a shaft end center hole, the position of the pull claw is adjusted to enable the pull claw to be hooked on the outer ring of the bearing, and the pull claw drives the bearing to move outwards along the axial direction to be dismounted by rotating the rotary handle. At present, the puller disclosed by the prior art is large in size and has certain requirements on the field space when in use. Therefore, when the existing puller is used for disassembling fixed parts such as pins or bearings in a limited space, the use is inconvenient, and parts are easy to damage; even because the restriction in place makes current puller unable normal use, leads to dismantling the failure.

Therefore, the technical personnel in the field are dedicated to develop a combined puller, and the combined puller aims to solve the problem that the puller in the prior art has the defects of inconvenient use and even incapability of being normal due to small space in the use process.

SUMMERY OF THE UTILITY MODEL

In view of the above defects of the prior art, the technical problem to be solved by the utility model is that the puller in the prior art is inconvenient to use in a small space and is easy to cause damage to parts; even the disassembly fails, and the labor intensity of operators is high.

In order to achieve the purpose, the utility model provides a combined puller, which comprises a split pulling sleeve, a nut, a fixed sleeve and a bolt;

the split drawing sleeve comprises two U-shaped columns; the U-shaped openings of the two U-shaped columns are opposite and are arranged outside the nut and the bolt; one end of each U-shaped column clamps the bearing to be taken out, and the other end clamps the outer side of the nut;

the fixed sleeve is cylindrical, one end of the fixed sleeve is closed, and the other end of the fixed sleeve is open; the center of the closed end of the fixed sleeve comprises a round hole;

the fixing sleeve is sleeved outside the split drawing sleeve, and the bolt extends out of a circular hole at the closed end of the fixing sleeve;

the nut and the bolt comprise threads used in a matched mode;

the length of the bolt is greater than that of the fixing sleeve;

the length of the fixed sleeve is the same as that of the split drawing sleeve;

further, the length ratio of the bolt to the fixing sleeve is 1.5: 1-2: 1;

in a preferred embodiment of the present invention, the length ratio of the bolt to the fixing sleeve is 1.5: 1;

scheme more than adopting, the utility model discloses a combined horse that draws has following technological effect:

1. the combined puller of the utility model has the advantages that the two U-shaped columns of the split pulling sleeve are relatively clamped outside the bearing and the nut, the fixing sleeve is sleeved outside the split pulling sleeve, the bolt extends out of the round hole at the closed end of the fixing sleeve, the bolt is screwed, and the bearing is slowly pulled out of the shaft; the labor intensity is greatly reduced when the fixing parts such as the pin or the bearing and the like are disassembled in the limited space, the working efficiency of maintenance is improved, the labor consumption is reduced, and the accidental damage of parts is effectively avoided;

2. the utility model discloses a combined puller, simple structure, light in weight, easy operation, the cost of manufacture is low, and later maintenance takes lowly, applicable in the dismantlement of various types of bearings, and the application is good.

In conclusion, the combined puller of the utility model has the advantages of convenient operation, time and labor saving, and can realize the disassembly of the bearing in a narrow space, thereby greatly improving the working efficiency and eliminating the hidden trouble of accidental damage of parts in the disassembly process of the bearing; the device has simple structure and manufacture, low manufacture cost and good applicability.

The conception, specific structure and technical effects of the present invention will be further described with reference to the accompanying drawings and specific embodiments, so as to fully understand the objects, features and effects of the present invention.

Drawings

FIG. 1 is a schematic view of a half cross-sectional view of the combined puller structure of the present invention;

fig. 2 is a schematic view of the split structure of the combined puller of the present invention;

fig. 3 is a schematic view of an assembly structure of the combined puller of the present invention;

FIG. 4 is a schematic view of a sectional structure of the split drawing sleeve of the combined puller of the present invention;

fig. 5 is a schematic cross-sectional view of the fixing sleeve of the combined puller of the present invention;

in the figure, 1, a split drawing sleeve; 2. a nut; 3. fixing the sleeve; 4, bolts; 5. a shaft; 6. a bearing; 7. a circular hole.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for clarity and understanding of the technical contents. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

As shown in fig. 1-5, the combined puller of the present invention comprises a split pulling sleeve 1, a nut 2, a fixing sleeve 3 and a bolt 4; the split drawing sleeve 1 comprises two U-shaped columns with opposite U-shaped openings; the split drawing sleeve 1 is positioned outside the nut 2 and the bolt 4; the fixed sleeve 3 is cylindrical, one end of the fixed sleeve is closed, and the other end of the fixed sleeve is opened; the center of the closed end of the fixed sleeve 3 comprises a round hole 7; the fixed sleeve 3 is sleeved outside the split drawing sleeve 1, and the bolt 4 extends out of a round hole 7 at the closed end of the fixed sleeve 3; the nut 2 and the bolt 4 comprise threads used in a matching way; the length of the bolt 4 is greater than that of the fixing sleeve 3; the length of the fixed sleeve 3 is the same as that of the split drawing sleeve 1;

in the present embodiment, the length ratio of the bolt 4 to the fixing sleeve 3 is 1.5: 1;

when in use, the utility model is used for cleaning the inner wall of the tank,

firstly, screwing a nut 2 on a bolt 4, positioning the tip of the bolt at the tip hole of the end of a shaft 5, and installing a split drawing sleeve 1 on the outer sides of the nut and the bolt, so that one end of each of two U-shaped columns of the split drawing sleeve 1 is clamped on a bearing 6 to be taken out, and the other end of each of the two U-shaped columns is clamped on the outer side of the nut 2; then the fixing sleeve 3 is sleeved outside the split drawing sleeve 1, the bolt 4 extends out of a round hole 7 at the closed end of the fixing sleeve 3, the bolt 4 is screwed, the nut 2 on the bolt 4 moves towards the closed end of the fixing sleeve 3, the bearing 6 is pulled to move rightwards through the two U-shaped columns of the split drawing sleeve 1, the bearing 6 is separated from the shaft 5, and the drawing and dismounting of the bearing 6 on the shaft 5 are achieved.

Through the in-service use, the utility model discloses when combined horse drawing carries out the dismantlement of bearing, still can very smooth and easy completion bearing's dismantlement in the confined space, do not cause unexpected damage to spare part, practiced thrift and dismantled maintenance duration, improved work efficiency, whole process can accomplish the operation by alone, convenient operation, labour saving and time saving.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (3)

1. The combined puller is characterized by comprising a split pulling sleeve (1), a nut (2), a fixing sleeve (3) and a bolt (4);

the split drawing sleeve (1) comprises two U-shaped columns; the U-shaped openings of the two U-shaped columns are opposite and are arranged outside the nut (2) and the bolt (4); one end of each U-shaped column clamps the bearing (6) to be taken out, and the other end clamps the outer side of the nut (2);

the fixed sleeve (3) is cylindrical, one end of the fixed sleeve is closed, and the other end of the fixed sleeve is open; the center of the closed end of the fixed sleeve (3) comprises a round hole (7);

the fixing sleeve (3) is sleeved outside the split drawing sleeve (1), and the bolt (4) extends out of a circular hole (7) at the closed end of the fixing sleeve (3);

the nut (2) and the bolt (4) comprise threads which are matched for use;

the length of the bolt (4) is greater than that of the fixing sleeve (3);

the length of the fixed sleeve (3) is the same as that of the split drawing sleeve (1).

2. The combination puller of claim 1,

the length ratio of the bolt (4) to the fixing sleeve (3) is 1.5: 1-2: 1.

3. The combination puller of claim 1,

the length ratio of the bolt (4) to the fixing sleeve (3) is 1.5: 1.

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