CN210060975U - Dismounting tool for countersunk head positioning pin without internal and external threads - Google Patents
Dismounting tool for countersunk head positioning pin without internal and external threads Download PDFInfo
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- CN210060975U CN210060975U CN201920859585.0U CN201920859585U CN210060975U CN 210060975 U CN210060975 U CN 210060975U CN 201920859585 U CN201920859585 U CN 201920859585U CN 210060975 U CN210060975 U CN 210060975U
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- countersunk head
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- sliding rod
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Abstract
The utility model discloses a extracting tool for no internal and external screw thread countersunk head locating pin, in an preferred embodiment, including inflation head, slide bar, regulation pole and slider. The expansion head is substantially in a cone-shaped structure, one end of a cone tip of the expansion head is provided with a plurality of slots which are uniformly distributed along the circumferential direction, the cone tip is divided into petal structures by the slots, barbs are arranged on the petal structures, and the petal structures are used for penetrating into the hollow part of the countersunk head positioning pin; the expansion head is arranged at one end of the sliding rod, the other end of the sliding rod is provided with a boss, and the sliding rod comprises an inner hole arranged along the axis of the sliding rod; the adjusting rod penetrates through the inner hole and can move along the axis of the inner hole, and the petal structures can be controlled to expand or close by the movement of the adjusting rod; the slider cover is established on the excircle of slide bar to can remove about the excircle of slide bar, can strike the boss when the slider removes left. The utility model discloses a extracting tool can demolish the countersunk head locating pin of no internal and external screw smoothly, does not harm locating pin and part moreover.
Description
Technical Field
The utility model relates to a mechanical maintenance field especially relates to a extracting tool that is used for no interior external screw thread countersunk head locating pin.
Background
The design of the positioning pin is common in mechanical design, and the pin plays a good positioning role in the assembly process of parts, so that the parts can be accurately matched. In order to facilitate the disassembly of the pin in the maintenance of mechanical equipment, the pin is usually provided with an internal thread, an external thread or even an external nut and the like, the maintenance of parts is convenient to disassemble, and the pin puller which is commonly used in the mechanical field is also designed and used based on the fact that the pin is provided with a thread (comprising the internal thread and the external thread). However, inside some mechanical equipment, because the needs of space and cooperation precision, generally need use the countersunk head pin, because the pin is less thinner, can not process the internal thread, tight force fit between pin and the spare part, for example the locating pin of multistage pump body middle section and stator locate fit, no internal thread, countersunk head, tight force fit, pin puller commonly used can not dismantle. The general traditional method in mechanical overhaul is as follows: the destructive cutting pin is detached, or the pin is pried out by tools such as a screwdriver and the like in a destructive manner, so that the scheme is long in detaching time and risks of damaging parts; or the pin is supercooled by cooling with liquid nitrogen and then the pin is hammered out. The scheme is complex in construction and high in cost.
Therefore, a novel tool is needed to be designed, the positioning pin without the internal thread and the countersunk head is disassembled, the operation is simple and convenient, and the parts of the equipment are not damaged.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a extracting tool for no interior external screw thread's countersunk head locating pin, its can be swiftly convenient will not have interior external screw thread's countersunk head locating pin and take out, and do not cause the damage to complex spare part.
In order to achieve the above object, the present invention provides a disassembling tool for a countersunk head positioning pin without internal and external threads, which comprises an expansion head, a sliding rod, an adjusting rod and a sliding block. The expansion head is substantially in a cone-shaped structure, one end of a cone tip of the expansion head is provided with a plurality of slots which are uniformly distributed along the circumferential direction, the cone tip is divided into petal structures by the slots, barbs are arranged on the petal structures, and the petal structures are used for penetrating into the hollow part of the countersunk head positioning pin; the expansion head is arranged at one end of the sliding rod, the other end of the sliding rod is provided with a boss, and the sliding rod comprises an inner hole arranged along the axis of the sliding rod; the adjusting rod penetrates through the inner hole and can move along the axis of the inner hole, and the petal structures can be controlled to expand or close by the movement of the adjusting rod; the slider cover is established on the excircle of slide bar to can remove about the excircle of slide bar, can strike the boss when the slider removes left.
In a preferred embodiment, the conical tail end of the expansion head is provided with an external thread extending backwards along the axis of the expansion head, and the external thread is provided with a through hole coaxial with the expansion head.
In a preferred embodiment, the slide bar further comprises a threaded counterbore and a threaded bore. The thread counter bore is arranged at one end of the sliding rod and is used for being in threaded connection with the external thread of the expansion head; the threaded hole is arranged at the other end of the sliding rod.
In a preferred embodiment, the threaded bore, the inner bore and the through bore are coaxial and in communication with each other.
In a preferred embodiment, one end of the adjustment rod has a conical head portion and the other end has a threaded portion, the diameter of the threaded portion being greater than the diameter of the adjustment rod.
In a preferred embodiment, the conical head penetrates through the threaded bore, the inner bore and the through-hole into the interior of the expansion head.
In a preferred embodiment, the threaded portion is adapted to be threadedly coupled with a threaded bore of the slide rod.
In a preferred embodiment, the diameter of the inner bore is greater than the diameter of the threaded section and the diameter of the through bore is greater than the diameter of the adjustment rod.
In a preferred embodiment, the adjusting rod further comprises a rod cap which is in an external hexagonal shape, and the rod cap is used for adjusting the adjusting rod to move left and right on the sliding block and the expansion head through a wrench so as to control the expansion or the closing of the petal structures.
In a preferred embodiment, the hardness of the barbs is greater than the hardness of the hollow interior wall of the countersunk head locating pin.
Compared with the prior art, the utility model discloses a extracting tool for no inside and outside screw thread countersunk head locating pin has following beneficial effect: the problem of difficulty when the countersunk head locating pin without the internal and external threads is disassembled in the prior art is successfully solved, the disassembling tool cannot damage parts and pins, can be operated by a single person, brings convenience for disassembling the countersunk head locating pin without the internal and external threads, protects field equipment, and shortens the overhaul period.
Drawings
Fig. 1 is a schematic structural diagram of a disassembling tool according to an embodiment of the present invention.
Fig. 2 is a front cross-sectional view of an expansion head of a removal tool according to an embodiment of the present invention.
Fig. 3 is a side view schematic of an expansion head of a removal tool according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a slide bar of a removal tool according to an embodiment of the present invention.
Fig. 5 is a schematic side view of an adjustment lever of a removal tool according to an embodiment of the present invention.
Fig. 6 is a schematic view of an application of a removal tool according to an embodiment of the present invention.
Description of the main reference numerals:
1-expansion head, 101-barb, 102-slotting, 103-petal structure, 104-external thread, 105-through hole, 2-sliding rod, 201-thread counter bore, 202-internal hole, 203-threaded hole, 204-boss, 3-sliding block, 4-adjusting rod, 5-rod cap, 6-counter head positioning pin and 7-component.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a disassembling tool according to an embodiment of the present invention. According to the utility model discloses a extracting tool that is used for no countersunk head locating pin of internal and external screw thread of preferred embodiment, in a preferred embodiment, including inflation head 1, slide bar 2, regulation pole 3 and slider 4.
As shown in fig. 2 to 3, fig. 2 is a front sectional view of an expansion head 1 of a removal tool according to an embodiment of the present invention. Fig. 3 is a schematic side view of an expansion head 1 of a removal tool according to an embodiment of the invention. In some embodiments, the expansion head 1 is substantially in a cone-shaped structure, one end of the cone tip of the expansion head 1 is provided with a plurality of slots 102 uniformly distributed along the circumferential direction, the plurality of slots 102 divide the cone tip into petal structures 103, only 4 petal structures 103 are illustrated in the present embodiment, and each petal is close to a quarter circle, but the number and the shape of the petal structures 103 are not limited by the illustration in the present embodiment. The petal structures 103 are provided with barbs 101, and the petal structures 103 are used for penetrating into the hollow parts of the countersunk head positioning pins 6; the cone tail end of the expansion head 1 is provided with an external thread 104 extending backwards along the axis of the expansion head, and the external thread 104 is provided with a through hole 105 coaxial with the expansion head 1. The cone tip end of the expansion head 1 and the external thread 104 part can be connected together after being processed respectively, and the connection mode can adopt welding or threaded connection, etc., and the utility model discloses not use this as the limit. The barb 101 of the expansion head 1 is preferably quenched, because the hardness of the barb 101 must be greater than that of the hollow inner wall of the countersunk head positioning pin 6, so that the expansion head 1 can be firmly expanded in the hollow inner part of the countersunk head positioning pin 6, and the service life of the expansion head 1 can be prolonged.
As shown in fig. 4, fig. 4 is a sectional view of a slide bar of a disassembling tool according to an embodiment of the present invention. In some embodiments, the other end of the slide bar 2 has a boss 204, the slide bar 2 includes an inner bore 202 disposed along its axis; the slide bar 2 further comprises a threaded counter bore 201 and a threaded bore 203. The threaded counter bore 201 is arranged at one end of the sliding rod 2, and the threaded counter bore 201 is used for being in threaded connection with the external thread 104 of the expansion head 1; a threaded hole 203 is provided at the other end of the slide rod 2.
In some embodiments, the adjustment rod 3 is disposed through the inner bore 202 and is movable along the axis of the inner bore 202, and movement of the adjustment rod 3 can control the expansion or closure of the petal structures 103. One end of the adjusting rod 3 is provided with a conical head part, and the other end is provided with a threaded part which is used for being in threaded connection with a threaded hole 203 of the sliding rod 2. The threaded hole 203, the inner hole 202, and the through hole 105 are coaxial and communicate with each other. The diameter of the threaded portion is larger than the diameter of the adjustment rod 3. The diameter of the inner bore 202 is larger than the diameter of the threaded section and the diameter of the through bore 105 is larger than the diameter of the adjustment rod 3. This ensures that the conical head can penetrate through the threaded bore 203, the inner bore 202 and the through-bore 105 into the interior of the expansion head 1.
Fig. 5 is a schematic side view of an adjusting lever of a disassembly tool according to an embodiment of the present invention, as shown in fig. 5. In some embodiments, the adjusting rod 3 further comprises a rod cap 5 which is shaped like an outer hexagon, the rod cap 5 is used for adjusting the adjusting rod 3 to move left and right between the sliding block 4 and the expansion head 1 through a wrench, so that the petal structures 103 are controlled to expand or close by the fact that the conical head portions of the adjusting rod 3 abut against the insides of the petal structures 103, and when the petal structures 103 expand, the barb 101 portions can firmly expand in the hollow of the countersunk head positioning pin 6.
In some embodiments, the sliding block 4 is sleeved on the outer circle of the sliding rod 2 and can move left and right along the outer circle of the sliding rod 2, the sliding block 4 can impact the boss 204 when moving left, and knurling is arranged on the outer circle of the sliding block 4 for preventing slipping.
As shown in fig. 6, fig. 6 is an application schematic diagram of a disassembling tool according to an embodiment of the present invention. The actual disassembly process of this extracting tool is as follows:
firstly, the sliding block 4 is sleeved on the outer circle of the sliding rod 2, then the expansion head 1 is connected with the sliding rod 2, the conical head part of the adjusting rod 3 is transmitted into the inner hole 202 of the sliding rod 2 from the threaded hole 203 of the sliding rod 2, the threaded part of the adjusting rod 3 is screwed into the threaded hole 203 of the sliding rod 2, and the conical head part is inserted into the expansion head 1. The total length of the adjusting rod 3 is slightly longer than the sum of the lengths of the sliding rod 2 and the expansion head 1. The petal structures 103 in the closed state are deeply inserted into the hollow interior of the countersunk head positioning pin 6, and the rod cap 5 of the adjusting rod 3 is rotated by a spanner until the barb 101 parts of the petal structures 103 are firmly expanded in the hollow interior of the countersunk head positioning pin 6. The slider 4 is slid to the left and back, the slider 4 is continuously struck against the boss 204 portion of the slide bar 2, and the countersunk head positioning pin 6 is slowly pulled out of the member 7 by the force of the slider 4 striking against the boss 204. And after the countersunk head positioning pin 6 is completely pulled out, reversely rotating the rod cap 5 to restore the petal structures 103 to a closed state, pulling the petal structures 103 out of the hollow interior of the countersunk head positioning pin 6, and finishing the disassembly work.
To sum up, the utility model discloses a extracting tool for no inside and outside screw thread countersunk head locating pin has following advantage: the problem of difficulty when the countersunk head locating pin without the internal and external threads is disassembled in the prior art is successfully solved, the disassembling tool cannot damage parts and pins, can be operated by a single person, brings convenience for disassembling the countersunk head locating pin without the internal and external threads, protects field equipment, and shortens the overhaul period.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A removal tool for a countersunk head locating pin without internal and external threads, comprising:
the expansion head is of a substantially conical barrel structure, one end of a conical tip of the expansion head is provided with a plurality of slots which are uniformly distributed along the circumferential direction, the conical tip is divided into petal structures by the slots, the petal structures are provided with barbs, and the petal structures are used for penetrating into the hollow parts of the countersunk head positioning pins;
the expansion head is arranged at one end of the sliding rod, the other end of the sliding rod is provided with a boss, and the sliding rod comprises an inner hole arranged along the axis of the sliding rod;
the adjusting rod penetrates through the inner hole and can move along the axis of the inner hole, and the petal structure can be controlled to expand or close by the movement of the adjusting rod; and
the sliding block is sleeved on the excircle of the sliding rod and can move left and right along the excircle of the sliding rod, and the sliding block can impact the boss when moving left.
2. A removal tool for a internally and externally unthreaded countersunk head locating pin as claimed in claim 1, in which the tapered end of the expansion head has an external thread extending rearwardly along its axis, the external thread having a through hole coaxial with the expansion head.
3. The removal tool for a countersunk head dowel pin without internal and external threads as claimed in claim 2, wherein the slide bar further comprises:
the threaded counter bore is arranged at one end of the sliding rod and is used for being in threaded connection with the external thread of the expansion head; and
and the threaded hole is formed in the other end of the sliding rod.
4. A removal tool for a internally and externally unthreaded countersunk head locating pin as claimed in claim 3, in which the threaded bore, the internal bore and the through-bore are coaxial and in communication with one another.
5. A removal tool for a countersunk head dowel without internal and external threads as claimed in claim 3, wherein the adjustment rod has a tapered head portion at one end and a threaded portion at the other end, and the diameter of the threaded portion is greater than the diameter of the adjustment rod.
6. A removal tool for a internally and externally unthreaded countersunk head locating pin as claimed in claim 5, in which the countersunk head portion extends through the threaded bore, the internal bore and the through bore to the interior of the expansion head.
7. The removal tool for a countersunk head dowel without internal and external threads as claimed in claim 5, wherein the threaded portion is used for threaded connection with the threaded hole of the slide bar.
8. The removal tool for a countersunk head dowel without internal and external threads as claimed in claim 5, wherein the diameter of the inner bore is greater than the diameter of the threaded portion, and the diameter of the through hole is greater than the diameter of the adjustment rod.
9. The removal tool for a countersunk head positioning pin without internal and external threads as claimed in claim 5, wherein the adjusting rod further comprises a rod cap having an external hexagonal shape, and the rod cap is used for adjusting the adjusting rod to move left and right on the sliding block and the expansion head through a wrench so as to control the expansion or the closure of the petal structures.
10. The removal tool for a countersunk head dowel without internal and external threads as claimed in claim 1, wherein the hardness of the barb is greater than the hardness of the hollow inner wall of the countersunk head dowel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920859585.0U CN210060975U (en) | 2019-06-10 | 2019-06-10 | Dismounting tool for countersunk head positioning pin without internal and external threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920859585.0U CN210060975U (en) | 2019-06-10 | 2019-06-10 | Dismounting tool for countersunk head positioning pin without internal and external threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210060975U true CN210060975U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920859585.0U Active CN210060975U (en) | 2019-06-10 | 2019-06-10 | Dismounting tool for countersunk head positioning pin without internal and external threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210060975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012658A (en) * | 2021-10-29 | 2022-02-08 | 华能山东石岛湾核电有限公司 | Sealing washer remove device |
| CN114714294A (en) * | 2022-04-18 | 2022-07-08 | 南京工艺装备制造有限公司 | Tool for mounting counter bore gland on guide rail |
-
2019
- 2019-06-10 CN CN201920859585.0U patent/CN210060975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012658A (en) * | 2021-10-29 | 2022-02-08 | 华能山东石岛湾核电有限公司 | Sealing washer remove device |
| CN114714294A (en) * | 2022-04-18 | 2022-07-08 | 南京工艺装备制造有限公司 | Tool for mounting counter bore gland on guide rail |
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