CN114905265A - Assembly device and method for large and small-head pins - Google Patents
Assembly device and method for large and small-head pins Download PDFInfo
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- CN114905265A CN114905265A CN202210613425.4A CN202210613425A CN114905265A CN 114905265 A CN114905265 A CN 114905265A CN 202210613425 A CN202210613425 A CN 202210613425A CN 114905265 A CN114905265 A CN 114905265A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 229920001342 Bakelite® Polymers 0.000 description 5
- 239000004637 bakelite Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
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Abstract
The invention discloses an assembly component of a large-small head pin, wherein the large-small head pin comprises a large head part and a small head part, and the outer diameter of the large head part is larger than that of the small head part; the assembly component comprises a guide rod, and a sliding hammer capable of sliding along the guide rod is arranged at the upper part of the guide rod; the sliding hammer is characterized in that a limiting block is arranged below the sliding hammer, an assembling groove matched with the large head pin and the small head pin is arranged below the limiting block, the assembling groove comprises a small groove for accommodating the small head and a large groove for accommodating the large head, and the large groove is located below the small groove. The assembling component device and the assembling method for the large and small-head pins can apply the mounting and dismounting action to the large head part of the large and small-head pins, ensure that the mounting and dismounting process is carried out stably, and cannot influence the normal use of the large and small-head pins.
Description
Technical Field
The invention relates to the field of assembly of large and small head pins, in particular to an assembly device and method for the large and small head pins.
Background
A large number of numerical control forming machines are needed in the PCB industry, the PCB forming machines are mainly used for dividing the size of a large jointed board (pnl) into a delivery Size (SET) and forming inner grooves of each unit of the PCB, pins are needed to align each SET and a machine table in the forming process, and the minimum pin used in the limit is 1.0 mm.
The maximum copper-free hole in the existing electronic screen plate is 0.85mm, and the manufacturing process limit is exceeded, so that a special large-small-head pin needs to be designed, and the small-head part is sleeved with a plate hole with the diameter of 0.825mm for positioning; the board mesa bakelite board is nailed in to major-head diameter 3mm, and the bending resistance prevents that the pin is disconnected:
aiming at the disassembly and assembly of big and small head pins, the general method in the industry is as follows: when the pin is installed, a hammer is used for knocking in a pre-drilled hole, the method is suitable for large pins, and the pin tip is easy to be knocked, deformed and even broken for thin pins. And the verticality between the nailed pin and the table top cannot be ensured; when the pin is dismounted, the pin is clamped and pried by using specially-processed steel bar shears (the cutting edges are ground and the shearing edges are bent into an arc shape), the method is suitable for large pins, but the small pins are clamped and easily deformed, the pried thin pins are easily bent or even broken, a hammer and the steel bar shears used when the pin is dismounted are heavy and inconvenient to operate, and when the two pins are too close, one of the two pins is knocked, and the other pin is easily knocked.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the problems in the related art. Therefore, the invention aims to provide an assembly device and an assembly method for a large-small-head pin, which can apply the mounting and dismounting action force to the large-head part of the large-small-head pin, ensure that the mounting and dismounting process is carried out stably, and cannot influence the normal use of the large-small-head pin.
In order to achieve the purpose, the following technical scheme is adopted in the application: the assembling component of the large and small head pin comprises a large head part and a small head part, wherein the outer diameter of the large head part is larger than that of the small head part;
the assembly component comprises a guide rod, and a sliding hammer capable of sliding along the guide rod is arranged at the upper part of the guide rod; the sliding hammer is characterized in that a limiting block is arranged below the sliding hammer, an assembling groove matched with the large head pin and the small head pin is arranged below the limiting block, the assembling groove comprises a small groove for accommodating the small head and a large groove for accommodating the large head, and the large groove is located below the small groove.
Furthermore, the assembly groove comprises a side notch, and the axis of the side notch coincides with the axis of the assembly groove.
Further, the cross-sectional area of the side notch on a plane perpendicular to the axis thereof is smaller than the cross-sectional area of the fitting groove on a plane perpendicular to the axis thereof.
Furthermore, one side of the guide rod, which is far away from the side notch, is provided with a pin box.
Furthermore, the pin box is detachably connected with the guide rod through a dovetail groove, and the pin box can slide along the axial lead direction of the guide rod.
Furthermore, a magnet is arranged on the side wall of the small groove.
Furthermore, an annular clamping groove is formed in the large head, and the central line of the annular clamping groove is overlapped with the axial line of the pin.
Furthermore, a lantern ring matched with the annular clamping groove is arranged inside the large groove, and the lantern ring is detachably mounted on the inner wall of the guide rod.
A method of installing reducer pins using a fitting assembly as described above, comprising: placing the guide rod on the surface of a workpiece, wherein the assembling groove is opposite to the pin hole on the surface of the workpiece; embedding a large head pin and a small head pin into the assembly groove, wherein the small head part is positioned in the small groove, and the large head part is positioned in the large groove; the acting force of the sliding hammer is transmitted to the plane of the big head part connected with the small head part through the limiting block and the guide rod and is used for pressing the big head part into the pin hole on the surface of the workpiece.
A method of disassembling a reducer pin using a fitting assembly as described above, comprising:
the lantern ring is fixed in the side wall of the big groove, the lantern ring is fixed in the annular clamping groove in the large-head pin and the small-head pin, and the lower-head pin is driven by the guide rod to be pulled out of the pin hole.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the assembling of the large and small-head pins is realized by means of the guide rod, the gravity of the downward sliding of the sliding hammer in the guide rod provides power for installing the pins, the sliding hammer acts on the limiting block, and the limiting block transmits the acting force of the sliding hammer to the assembling groove along the guide rod; the big and small head pins are positioned in the assembly grooves, the assembly grooves are provided with a big groove and a small groove, when the acting force of the guide rod is transmitted, the acting force acts on the joint of the big groove and the small groove, namely the shoulder of the big and small head pins, and the shoulder refers to a plane where the big head part is connected with the small head part; ensure that the installation effect is used in the major part, prevent to cause the influence to little head, ensure big and small head pin and install smoothly.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
In the drawings:
FIG. 1 is a perspective view of an assembly device of the present application;
FIG. 2 is a schematic front view of the present application of an assembly device for insertion of large and small headed pins;
FIG. 3 is a schematic cross-sectional view taken along the line A-A in FIG. 2;
FIG. 4 is an enlarged view of the guide rod of FIG. 3 with the assembly groove in place;
FIG. 5 is a schematic structural diagram of a reducer pin;
reference numerals: 1. a guide bar; 11. a slide hammer; 12. a limiting block; 13. a large groove; 14. a small groove; 15. a collar; 16. a dovetail groove; 17. a pin magazine; 2. a big head pin and a small head pin; 21. a large head; 22. a small head; 23. an annular slot.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", and the like are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the referred mechanism or element must have a specific direction, and thus, are not to be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
Referring to fig. 1-5, the present application provides an assembly component for a large-small head pin, where the large-small head pin includes a large head 21 and a small head 22, and an outer diameter of the large head 21 is greater than an outer diameter of the small head 22;
the assembly component comprises a guide rod 1, and a sliding hammer 11 capable of sliding along the guide rod 1 is arranged at the upper part of the guide rod 1; a limiting block 12 is arranged below the sliding hammer 11, an assembling groove matched with the large head pin 2 and the small head pin 2 is arranged below the limiting block 12, the assembling groove comprises a small groove 14 for accommodating the small head and a large groove 13 for accommodating the large head, and the large groove 13 is located below the small groove 14.
The assembly of the large and small-head pin is realized by means of the guide rod 1, the gravity of the downward sliding of the sliding hammer 11 in the guide rod 1 provides power for installing the pin, the sliding hammer 11 acts on the limiting block 12, and the limiting block 12 transmits the acting force of the sliding hammer 11 to the assembly groove along the guide rod 1; the big-small head pin 2 is positioned in the assembly groove, the assembly groove is provided with a big groove 13 and a small groove 14, and when the acting force of the guide rod 1 is transmitted, the acting force acts on the joint of the big groove 13 and the small groove 14, namely the shoulder of the big-small head pin 2, wherein the shoulder refers to the plane of the big head 21 connected with the small head 22; ensure that the installation effect is used in the major part, prevent to cause the influence to little head, ensure big and small head pin and install smoothly.
Example 1
With reference to fig. 1 to 5, in the assembly of the large and small-head pin according to the present embodiment, the large and small-head pin 2 includes a large head 21 and a small head 22, and an outer diameter of the large head 21 is larger than an outer diameter of the small head 22; as shown in fig. 5.
The assembly component comprises a guide rod 1, and a sliding hammer 11 capable of sliding along the guide rod 1 is arranged at the upper part of the guide rod 1; a limiting block 12 is arranged below the sliding hammer 11, an assembling groove matched with the large head pin and the small head pin is arranged below the limiting block 12, the assembling groove comprises a small groove 14 for accommodating the small head and a large groove 13 for accommodating the large head, and the large groove 13 is located below the small groove 14.
Magnets (not shown in the figure) are arranged on the side walls of the small grooves 14; when big end pin 2 was placed in the assembly recess, the magnet that is located on little recess 14 lateral wall can adsorb big end pin 2, plays the fixed action to it.
This application is provided with the side breach in the assembly recess, and the axial lead of side breach and the axial lead coincidence of assembly recess. For example, when the bottom of guide arm 1 is cylindric, cylindric guide arm 1 bottom is provided with big recess 13 and little recess 14, and big recess 13 and little recess 14 are the cavity chamber that matches with big warpout 2 shape, and the side breach is at cylindric guide arm 1 side opening promptly for one of them part in big recess 13 and the little recess 14 exposes, and the side breach that this application set up has following advantage:
firstly, when the assembly groove at the bottom of the guide rod 1 is aligned with the pin hole on the workpiece, the large and small head pins 2 can be embedded into the assembly groove through the side gaps, and specifically, the large and small head pins 2 only need to be held by hands, the large head 21 of the large and small head pins faces downwards, and after the position is righted, the large and small head pins are plugged into the assembly groove from the side gaps.
Secondly, in the installation process of the large and small head pins 2, the large and small head pins 2 can be held by hands through the side notches, and the position of the large and small head pins 2 is kept fixed in the whole assembly process.
Thirdly, set up the volume that the breach can save the assembly recess, even when the pin hole distance is nearer, with the help of the side breach, also can realize the accurate location installation of concentric reducer pin.
Finally, the side notches are arranged, so that the positions of the pin holes can be checked when the assembling grooves are aligned with the pin holes, and the assembling grooves and the pin holes are ensured to be better aligned.
In order to ensure that the assembly groove can be better fixed big and small head pins, the radian of the assembly groove needs to be ensured to be greater than that of a semicircle, so that the radian of the side notch is smaller than that of the semicircle, and the two can be combined to form a complete cylindrical structure. That is, on the same horizontal plane, the sectional area of the side notch on a plane perpendicular to the axis thereof is smaller than the sectional area of the fitting groove on a plane perpendicular to the axis thereof.
One side of the guide rod 1, which is far away from the side gap, is provided with a pin box 17. The pin box 17 is detachably connected with the guide rod 1 through the dovetail groove 16, and the pin box 17 can slide along the axial lead direction of the guide rod 1.
When the big and small head pins are installed, the pin box 17 is installed in the dovetail groove 16, and the pin box 17 can slide up and down along the dovetail groove 16, so that when the installation is started, the pin box 17 slides to the position below the big and small head pins 2, the bottom surface of the pin box 17 is perpendicular to the guide rod 1, and the big and small head pins 2 can be ensured to be perpendicular to the surface of a workpiece by means of the pin box 17. And the pin box 17 can be used for storing large and small head pins 2, tools for dismounting are integrated together through the combination of the designed sliding hammer 11, the guide rod 1 and the pin box 17, too many tools are not needed, and the portable type pin box is light. When the big and small head pins are close, the pin box 17 can be detached, and the installation can be suitable for the conditions of smaller installation distance and densely distributed pins.
When the big and small head pins are disassembled, the pin box 17 can be disassembled, so that the disassembly is convenient.
The large head part 21 of the large head pin 2 and the small head pin 2 is provided with the annular clamping groove 23, and the central line of the annular clamping groove 23 coincides with the axial lead of the large head pin 2 and the small head pin. The inside of the big groove 13 is provided with a lantern ring 15 matched with the annular clamping groove 23, and the lantern ring 15 is detachably arranged on the inner wall of the guide rod 1.
Example 2
The application provides a method for installing large and small head pins, which comprises the following steps:
controlling a machine tool to drill corresponding pin holes on the bakelite plate;
placing the prepared large and small head pins 2 into a pin box 17, and fixing the pin box 17 in a dovetail groove 16 on the side wall of the guide rod 1;
the guide rod 1 is placed on the bakelite plate, and the assembling groove is opposite to the pin hole;
taking out a large and small head pin 2 from the pin box 17, and embedding the large and small head pin 2 into the assembly groove from the side gap, wherein the small head part 22 is positioned in the small groove 14, and the large head part 21 is positioned in the large groove 13; and the magnet in the small groove 14 adsorbs the big and small head pins 2; the left hand is used for assisting in assembling the big-small-head pin 2 in the groove and covering the top of the pin box 17, so that the big-small-head pin is prevented from being shaken out during knocking;
the two hands are matched to enable the bottom end of the big end part 21 of the big-end pin to enter the pin hole, the pin box 17 slides along the direction of the guide rod 1, so that the bottom of the pin box 17 is in contact with the bakelite plate, and the guide rod 1 is ensured to be vertical to the surface of the bakelite plate; if the pin spacing is short, the pin box 17 can be lifted out, so that the situation of small spacing is met;
the acting force of the sliding hammer 11 is transmitted to the plane of the big head part and the small head part through the limiting block 12 and the guide rod 1, and the big head part is pressed into the pin hole on the surface of the workpiece.
Example 3
The application provides a method for disassembling big and small head pins, which comprises the following steps:
the pin box 17 is detached from the guide rod 1, and the lantern ring 15 is fixed in the side wall of the large groove 13;
fixing the lantern ring 15 in an annular clamping groove 23 in the pin with the big head and the small head;
the lower head pin is driven by the guide rod 1 to be pulled out of the pin hole.
Annular clamping groove and lantern ring 15 cooperate in this application, can realize demolising of concentric reducer pin, when demolising, assemble lantern ring 15 earlier in the assembly recess, annular clamping groove 23 in the fixed concentric reducer pin of reuse lantern ring 15, extract concentric reducer pin with the help of the effort of guide arm 1 at last. Annular clamping groove 23 is arranged in big head portion 21 of big-end pin and small-end pin, as shown in fig. 5, so that in the disassembling process, the acting force of guide rod 1 completely acts on the big head portion, no influence is caused on small head portion 22, small head portion 22 is not stressed in the disassembling process, and damage to small head portion 22 is avoided.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The assembling component of the large and small head pin is characterized in that the large and small head pin comprises a large head part and a small head part, and the outer diameter of the large head part is larger than that of the small head part;
the assembly component comprises a guide rod, and a sliding hammer capable of sliding along the guide rod is arranged at the upper part of the guide rod; the sliding hammer is characterized in that a limiting block is arranged below the sliding hammer, an assembling groove matched with the large head pin and the small head pin is arranged below the limiting block, the assembling groove comprises a small groove for accommodating the small head and a large groove for accommodating the large head, and the large groove is located below the small groove.
2. The assembly of claim 1, wherein the assembly groove comprises a side notch, and an axis of the side notch coincides with an axis of the assembly groove.
3. The assembly of claim 2, wherein the cross-sectional area of the side notch in a plane perpendicular to the axis of the side notch is smaller than the cross-sectional area of the assembly groove in a plane perpendicular to the axis of the side notch.
4. The assembly for assembling a reducer pin according to claim 2, wherein a pin box is arranged on one side of the guide rod away from the side notch.
5. The assembly of claim 4, wherein the pin box is detachably connected with the guide rod through a dovetail groove, and the pin box can slide along the axis direction of the guide rod.
6. The assembly of claim 1, wherein the side wall of the small groove is provided with a magnet.
7. The assembly of claim 1, wherein the big end portion is provided with an annular groove, and a center line of the annular groove coincides with an axis of the pin.
8. The assembly of claim 7, wherein a collar adapted to the annular slot is disposed inside the large groove, and the collar is detachably mounted on an inner wall of the guide rod.
9. A method of installing a large and small head pin using the fitting assembly of any of claims 1-7, comprising: placing the guide rod on the surface of a workpiece, wherein the assembling groove is opposite to the pin hole on the surface of the workpiece; embedding a large head pin and a small head pin into the assembly groove, wherein the small head part is positioned in the small groove, and the large head part is positioned in the large groove; the acting force of the sliding hammer is transmitted to the plane of the big head part connected with the small head part through the limiting block and the guide rod and is used for pressing the big head part into the pin hole on the surface of the workpiece.
10. A method of disassembling a reducer pin using the assembly of claim 8, comprising:
the lantern ring is fixed in the side wall of the big groove, the lantern ring is fixed in the annular clamping groove in the large-head pin and the small-head pin, and the lower-head pin is driven by the guide rod to be pulled out of the pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210613425.4A CN114905265B (en) | 2022-05-31 | 2022-05-31 | Assembly component device and method for large-small-head pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210613425.4A CN114905265B (en) | 2022-05-31 | 2022-05-31 | Assembly component device and method for large-small-head pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114905265A true CN114905265A (en) | 2022-08-16 |
| CN114905265B CN114905265B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210613425.4A Active CN114905265B (en) | 2022-05-31 | 2022-05-31 | Assembly component device and method for large-small-head pin |
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| CN (1) | CN114905265B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202498505U (en) * | 2012-03-14 | 2012-10-24 | 重庆康明斯发动机有限公司 | Device for mounting pin |
| CN109421023A (en) * | 2017-08-25 | 2019-03-05 | 成都美吉房地产营销策划有限公司 | One kind Multifunction pin puller used in house maintenance |
| CN109531492A (en) * | 2017-09-21 | 2019-03-29 | 航天科工惯性技术有限公司 | Dismounting tooling for sealing element |
| CN210232877U (en) * | 2019-07-15 | 2020-04-03 | 烟台合创自动化科技有限公司 | Pin removing device |
| CN210550847U (en) * | 2019-07-05 | 2020-05-19 | 中国葛洲坝集团机电建设有限公司 | Key pin pulling and extending tool |
| CN111702719A (en) * | 2020-06-29 | 2020-09-25 | 江苏核电有限公司 | Multifunctional pin taking-out method and device |
| CN216265760U (en) * | 2021-04-29 | 2022-04-12 | 中煤平朔集团有限公司 | Integral special tool for quickly disassembling and installing cutting teeth of coal mining machine |
-
2022
- 2022-05-31 CN CN202210613425.4A patent/CN114905265B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202498505U (en) * | 2012-03-14 | 2012-10-24 | 重庆康明斯发动机有限公司 | Device for mounting pin |
| CN109421023A (en) * | 2017-08-25 | 2019-03-05 | 成都美吉房地产营销策划有限公司 | One kind Multifunction pin puller used in house maintenance |
| CN109531492A (en) * | 2017-09-21 | 2019-03-29 | 航天科工惯性技术有限公司 | Dismounting tooling for sealing element |
| CN210550847U (en) * | 2019-07-05 | 2020-05-19 | 中国葛洲坝集团机电建设有限公司 | Key pin pulling and extending tool |
| CN210232877U (en) * | 2019-07-15 | 2020-04-03 | 烟台合创自动化科技有限公司 | Pin removing device |
| CN111702719A (en) * | 2020-06-29 | 2020-09-25 | 江苏核电有限公司 | Multifunctional pin taking-out method and device |
| CN216265760U (en) * | 2021-04-29 | 2022-04-12 | 中煤平朔集团有限公司 | Integral special tool for quickly disassembling and installing cutting teeth of coal mining machine |
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| Publication number | Publication date |
|---|---|
| CN114905265B (en) | 2024-01-26 |
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