CN220637761U - Tool for disassembling internal thread cylindrical pin - Google Patents
Tool for disassembling internal thread cylindrical pin Download PDFInfo
- Publication number
- CN220637761U CN220637761U CN202322228405.8U CN202322228405U CN220637761U CN 220637761 U CN220637761 U CN 220637761U CN 202322228405 U CN202322228405 U CN 202322228405U CN 220637761 U CN220637761 U CN 220637761U
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- handed
- bolt
- hole
- internal thread
- connecting screw
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- 229910000746 Structural steel Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Abstract
The utility model belongs to the technical field of disassembling tools, and provides a tool for disassembling an internal thread cylindrical pin, which comprises an internal thread supporting sleeve, a left-handed bolt, an end face bearing, a connecting screw, a retainer ring and a special spanner; the inner hole of the inner thread supporting sleeve is provided with left-handed inner threads, and a screw pair is formed by the left-handed inner threads and left-handed bolts; the left-handed bolt is provided with an axial through hole, and a sinking groove is formed in a nut of the left-handed bolt and is used for installing an end face bearing; the connecting screw rod is a cylindrical head inner hexagonal right-handed threaded bolt, when the connecting screw rod passes through the retainer ring and then passes through an axial through hole of the left-handed bolt to be screwed into an inner threaded hole at the head of the cylindrical pin to be disassembled, then the connecting screw rod is screwed by one end of the inner hexagon of the special spanner, and one end of the special spanner sleeve is used for clockwise rotating the left-handed bolt, so that the left-handed bolt is gradually separated from the inner threaded supporting sleeve, and the cylindrical pin to be disassembled is brought out. The utility model can rapidly disassemble the internal thread cylindrical pins with various specifications in a narrow space without damaging the pin hole and threads.
Description
Technical Field
The utility model belongs to the technical field of disassembly tools, and particularly relates to a tool for disassembling an internal thread cylindrical pin, which is suitable for disassembling internal thread cylindrical pins of various specifications in a narrow space.
Background
In the maintenance of mechanical equipment, various components and assemblies are often positioned and connected by internally threaded cylindrical pins, and as the use of the mechanical equipment ages, maintenance and replacement of parts and accessories becomes necessary, so it is often common to disassemble internally threaded cylindrical pins.
At present, a conventional internal thread cylindrical pin disassembling tool is characterized in that a bolt on the tool is screwed into an internal thread of a cylindrical pin, and then a sleeve sleeved on the bolt repeatedly and continuously impacts a nut of the bolt until the cylindrical pin to be disassembled is separated from a pin hole, so that the cylindrical pin is pulled out. However, when maintaining the lathe, because operating space is less, people's arm is spread and is not spread, can't borrow strength, and the cylindric lock belongs to interference fit in addition, and the cooperation is very inseparable, and at this moment conventional internal thread cylindric lock extracting tool dismantles very difficult, if operating angle is not just easily destroy pinhole, screw thread moreover, reduces surface roughness to lead to the cylindric lock that dismantles can not secondary use.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a tool for disassembling an internal thread cylindrical pin, which converts a rotation force into an axial tension force by matching a positive thread connecting screw rod and a reverse thread bolt with an internal thread supporting sleeve, and avoids the continuous impact of a sleeve, so that the internal thread cylindrical pin can be quickly disassembled in a small operation space, and the tool is suitable for cylindrical pins with different diameters.
The technical scheme provided by the utility model is as follows:
the tool for disassembling the internal thread cylindrical pin comprises an internal thread supporting sleeve, a left-handed bolt, an end face bearing, a connecting screw, a check ring and a special spanner;
the internal thread support sleeve is of a columnar structure provided with an axial through hole, a left-handed internal thread is arranged in the through hole at the upper end of the support sleeve, and the effective length of the left-handed internal thread is larger than the length of the cylindrical pin to be dismounted;
the left-handed bolt is provided with an axial through hole, and the upper end of the nut of the left-handed bolt is provided with a sinking groove; the left-handed bolt is screwed in from the upper end of the internal thread supporting sleeve and is matched with left-handed internal threads in a through hole at the upper end of the supporting sleeve, and the left-handed bolt and the left-handed internal threads form a screw pair;
the end face bearing is arranged in a sunken groove at the upper end of the left-handed bolt;
the connecting screw rod is a hexagonal right-handed threaded bolt in a cylindrical head, and penetrates through the retainer ring and then penetrates through an axial through hole of the left-handed bolt;
the special spanner is L-shaped, one end of the special spanner is an inner hexagonal spanner which is matched with the connecting screw, and the other end of the special spanner is a socket spanner which is matched with the left-handed bolt.
Further, the end face bearing is arranged in the sunken groove at the upper end of the left-handed bolt, and the end face of the bearing is higher than the end face of the nut of the left-handed bolt, so that the retainer ring is in rotary contact with the end face bearing, and the connecting screw is ensured to be capable of rotating smoothly in the axial through hole of the left-handed bolt.
Furthermore, the connecting screw and the retainer ring have different specifications, and are selected and combined according to the specifications of the cylindrical pin to be disassembled.
Furthermore, the left-handed bolts and the connecting screw are made of alloy structural steel, and the rest parts are made of carbon structural steel.
When the special wrench is used, the internal thread support sleeve and the left-handed bolt form a screw pair to prop against the position of the cylindrical pin to be disassembled, the connecting screw rod passes through the retainer ring and then passes through the axial through hole of the left-handed bolt, the connecting screw rod is screwed into the internal threaded hole at the head part of the cylindrical pin to be disassembled, then the connecting screw rod is screwed up by the inner hexagonal end of the special wrench, the left-handed bolt is rotated clockwise by the end of the special wrench sleeve, and the left-handed bolt is gradually separated from the internal thread support sleeve due to the fact that the left-handed bolt is left-handed thread, so that the cylindrical pin to be disassembled is taken out.
The utility model has the advantages that the rotating force is converted into the axial pulling force through the matching of the positive threaded connecting screw rod and the reverse threaded bolt with the internal threaded supporting sleeve, the continuous impact of the sleeve is avoided, and the internal threaded cylindrical pin can be rapidly disassembled in a smaller operation space; through introducing the terminal surface bearing, the rotatory power of applying to on the connecting screw rod when clockwise rotation left-hand bolt is unloaded by the rotation of terminal surface bearing, does not transmit for the cylindric lock of waiting to tear open, and the cylindric lock only receives simple axial force this moment, no longer receives rotatory power, the influence of hang down force, and it is more smooth and easy not only to dismantle the cylindric lock like this, and the locating hole or the connecting hole to the cylindric lock destroy minimumly moreover, do not influence the accuracy of relocation or connection again, and applicable cylindric lock of different diameter sizes.
Drawings
FIG. 1 is an isometric view of a tool that may be used to disassemble an internally threaded cylindrical pin in accordance with the utility model;
FIG. 2 is a schematic view of the structure of the internally threaded support sleeve of the present utility model;
FIG. 3 is a schematic view of the structure of the left-handed bolt of the present utility model;
fig. 4 is a schematic view showing the use state of a tool for disassembling an internally threaded cylindrical pin according to the present utility model.
In the figure: 1-an internal thread support sleeve; 2-left-handed bolts; 3-end face bearings; 4-connecting a screw; 5-a retainer ring; 6-a special spanner; 7-internal thread cylindric lock.
Detailed Description
The present utility model is described in further detail below with reference to the attached drawings and specific examples, which are illustrative, intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
As shown in fig. 1, an embodiment of a tool for disassembling an internally threaded cylindrical pin comprises an internally threaded support sleeve 1, a left-hand bolt 2, an end face bearing 3, a connecting screw 4, a retainer ring 5 and a special wrench 6;
as shown in fig. 2, the internal thread support sleeve 1 has a columnar structure with an axial through hole, a left-handed internal thread 11 is arranged in the through hole at the upper end of the support sleeve, and the effective length of the left-handed internal thread 11 is greater than the length of the cylindrical pin 7 required to be disassembled;
as shown in fig. 3, the left-handed bolt 2 is provided with an axial through hole 21, and the upper end of the nut is provided with a sinking groove 22; the left-handed bolt 2 is screwed in from the upper end of the internal thread supporting sleeve 1 and is matched with left-handed internal threads 11 in a through hole at the upper end of the supporting sleeve, and the left-handed bolt and the left-handed internal threads 11 form a screw pair;
the end face bearing 3 is arranged in a sunken groove 22 at the upper end of the left-handed bolt 2;
the connecting screw 4 is a hexagonal right-handed threaded bolt in a cylindrical head, and the connecting screw 4 passes through the retainer ring 5 and then passes through an axial through hole 21 of the left-handed bolt 2;
the special spanner 5 is L-shaped, one end of the special spanner is an inner hexagonal spanner which is matched with the connecting screw 4, and the other end of the special spanner is a socket spanner which is matched with the left-handed bolt 2.
In this embodiment, the end face bearing 3 is mounted in a recessed groove 22 at the upper end of the left-handed bolt 2, and the end face of the bearing is higher than the end face of the nut of the left-handed bolt 2, so that the retainer ring 5 is in rotary contact with the end face bearing 3, and the connecting screw 4 is ensured to be capable of rotating smoothly in an axial through hole 21 of the left-handed bolt 2.
In this embodiment, the connecting screw 4 and the retainer ring 5 have different specifications, and are selectively combined according to the specifications of the cylindrical pin 7 to be disassembled.
In this embodiment, the left-handed bolt 2 and the connecting screw 4 are made of alloy structural steel, and the rest parts are made of carbon structural steel.
When the screw pair is used, as shown in fig. 4, the internal thread support sleeve 1 and the left-handed bolt 2 are formed into a screw pair to be abutted against the position of the cylindrical pin 7, the connecting screw 4 is screwed into the internal thread hole at the head of the cylindrical pin 7 to be disassembled after passing through the retainer ring 5 and then passing through the axial through hole 21 of the left-handed bolt 2, then the connecting screw 4 is screwed up by using one end of the inner hexagon of the special spanner 6, and then the left-handed bolt 2 is rotated clockwise by using one end of the sleeve of the special spanner 6, and as the left-handed bolt 2 is in a left-handed thread, the left-handed bolt 2 is gradually separated from the internal thread support sleeve 1 by clockwise rotation, so that the cylindrical pin 7 to be disassembled is brought out.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made without departing from the spirit and scope of the utility model.
Claims (4)
1. A tool for removing an internally threaded cylindrical pin, characterized by: the device comprises an internal thread supporting sleeve, a left-handed bolt, an end face bearing, a connecting screw, a check ring and a special spanner;
the internal thread support sleeve is of a columnar structure provided with an axial through hole, a left-handed internal thread is arranged in the through hole at the upper end of the support sleeve, and the effective length of the left-handed internal thread is larger than the length of the cylindrical pin to be dismounted;
the left-handed bolt is provided with an axial through hole, and the upper end of the nut of the left-handed bolt is provided with a sinking groove; the left-handed bolt is screwed in from the upper end of the internal thread supporting sleeve and is matched with left-handed internal threads in a through hole at the upper end of the supporting sleeve, and the left-handed bolt and the left-handed internal threads form a screw pair;
the end face bearing is arranged in a sunken groove at the upper end of the left-handed bolt;
the connecting screw rod is a hexagonal right-handed threaded bolt in a cylindrical head, and penetrates through the retainer ring and then penetrates through an axial through hole of the left-handed bolt;
the special spanner is L-shaped, one end of the special spanner is an inner hexagonal spanner which is matched with the connecting screw, and the other end of the special spanner is a socket spanner which is matched with the left-handed bolt.
2. A tool for removing internally threaded cylindrical pins as defined in claim 1, wherein: the end face bearing is arranged in a sunken groove at the upper end of the left-handed bolt, and the end face of the bearing is higher than the end face of a nut of the left-handed bolt, so that the retainer ring is in rotary contact with the end face bearing, and the connecting screw is ensured to be capable of rotating smoothly in an axial through hole of the left-handed bolt.
3. A tool for removing internally threaded cylindrical pins as defined in claim 1, wherein: the connecting screw and the retainer ring have different specifications, and are selected and combined according to the specifications of the cylindrical pin to be disassembled.
4. A tool for removing internally threaded cylindrical pins as defined in claim 1, wherein: the left-handed bolts and the connecting screw are made of alloy structural steel, and the rest parts are made of carbon structural steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322228405.8U CN220637761U (en) | 2023-08-18 | 2023-08-18 | Tool for disassembling internal thread cylindrical pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322228405.8U CN220637761U (en) | 2023-08-18 | 2023-08-18 | Tool for disassembling internal thread cylindrical pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220637761U true CN220637761U (en) | 2024-03-22 |
Family
ID=90287949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322228405.8U Active CN220637761U (en) | 2023-08-18 | 2023-08-18 | Tool for disassembling internal thread cylindrical pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220637761U (en) |
-
2023
- 2023-08-18 CN CN202322228405.8U patent/CN220637761U/en active Active
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