CN110977842A - Be applied to interlock formula fastener of server subassembly and press from both sides tight frock - Google Patents
Be applied to interlock formula fastener of server subassembly and press from both sides tight frock Download PDFInfo
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- CN110977842A CN110977842A CN201911360448.3A CN201911360448A CN110977842A CN 110977842 A CN110977842 A CN 110977842A CN 201911360448 A CN201911360448 A CN 201911360448A CN 110977842 A CN110977842 A CN 110977842A
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- torsion bar
- adjusting rod
- fastener
- server
- adjusting
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- 230000033228 biological regulation Effects 0.000 claims description 13
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 12
- 238000011900 installation process Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 101150071434 BAR1 gene Proteins 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses an occlusion type fastener clamping tool applied to a server assembly, which comprises a torsion bar, a first adjusting rod, a second adjusting rod and a clamping plate, wherein the torsion bar is tightly propped against the end head of a fastener, the first adjusting rod is slidably sleeved on the outer wall of the torsion bar, the second adjusting rod is slidably arranged on the first adjusting rod, the clamping plate is arranged at the tail end of the second adjusting rod and is used for supporting the bottom surface of the server assembly, and the sliding direction of the second adjusting rod is the axial direction of the torsion bar. According to the clamping tool for the snap-in fastener applied to the server assembly, the end of the fastener is pressed through the torsion bar, and then the mounting positions of the first adjusting rod and the second adjusting rod are adjusted, so that the fastener and the server assembly can be conveniently and stably kept in a pressing alignment in the mounting operation process.
Description
Technical Field
The invention relates to the technical field of servers, in particular to a clamping tool for an occlusion type fastener applied to a server assembly.
Background
With the development of the electronic technology in China, more and more electronic devices have been widely used.
Servers are important components in electronic devices, and are devices that provide computing services. Since the server needs to respond to and process the service request, the server generally has the capability of assuming and securing the service. The server is divided into a file server, a database server, an application server, a WEB server and the like according to different service types provided by the server. The main components of the server include a processor, a hard disk, a memory, a system bus, etc., and are similar to a general-purpose computer architecture, but the server is required to have high processing capability, stability, reliability, security, expandability, manageability, etc., because it needs to provide highly reliable services.
In the big data era, a large number of IT devices are centrally located in a data center. These data centers include various types of servers, storage, switches, and a large number of cabinets and other infrastructure. Each type of IT equipment is composed of various hardware boards, such as a computing module, a memory module, a chassis, a fan module, and the like. The operation of the module generates heat, which requires the use of a heat sink to dissipate the heat.
In various server components, components such as a CPU and a graphics card module, which are mainly used for processing large-scale data, need to be additionally provided with a heat sink on the server chassis (mainly a fan module) for heat dissipation. In the case of a graphics card module, a spring-loaded fastener (screw locking device) is attached to the heat sink itself, and in this case, if the heat sink is to be mounted on the graphics card module, a large amount of force is required to press the heat sink and the graphics card module and keep the mounting holes of the heat sink and the graphics card module aligned with each other, and then the fastener is screwed to complete the mounting. Such an operation has a high requirement on the operation stability of an operator, and the manpower of the operator alone is likely to cause component shaking and deviation of the installation position in the installation process, which results in damage to the server component, injury to the operator, and the like.
Therefore, how to conveniently and stably keep the fastening member and the server assembly in a pressing alignment in the installation process, prevent the installation position deviation, and reduce the physical burden of the operator is a technical problem faced by the skilled in the art.
Disclosure of Invention
The invention aims to provide a clamping tool for an occlusion type fastener applied to a server assembly, which can conveniently and stably keep the fastener and the server assembly in a pressing alignment in the installation operation process, prevent the installation position deviation and reduce the physical burden of operators.
In order to solve the above technical problems, the present invention provides an engagement type fastener clamping tool applied to a server assembly, including a torsion bar for tightly abutting against an end of a fastener, a first adjusting rod slidably sleeved on an outer wall of the torsion bar, a second adjusting rod slidably disposed on the first adjusting rod, and a clamping plate disposed at a distal end of the second adjusting rod for supporting a bottom surface of the server assembly, wherein a sliding direction of the second adjusting rod is an axial direction of the torsion bar.
Preferably, the top end of the torsion bar is provided with a handle post for facilitating gripping and applying force to screw.
Preferably, the outer wall surface of the handle column is provided with a plurality of convex edges along the axial direction for enhancing friction.
Preferably, the bottom end of the torsion bar is provided with a cutter head which is matched with the cutter groove at the end part of the fastener.
Preferably, an elastic hoop is arranged at the head end of the first adjusting rod, the elastic hoop is sleeved on the rod body of the torsion bar, and a first adjusting bolt for adjusting the clamping diameter of the elastic hoop is arranged on the elastic hoop.
Preferably, the rod body of the first adjusting rod is perpendicular to the rod body of the torsion bar, and the rod body of the second adjusting rod is vertically slidably inserted into the rod body of the first adjusting rod.
Preferably, the tail end of the first adjusting rod is hollow, and the inner wall of the first adjusting rod is provided with an internal thread; the rod body of the second adjusting rod vertically penetrates through the tail end of the first adjusting rod, and a second adjusting bolt is connected to the tail end of the first adjusting rod in a threaded mode so as to pass through the tail end of the second adjusting bolt in an abutting mode and clamp the rod body of the second adjusting rod.
The invention provides an occlusion type fastener clamping tool applied to a server assembly. The torsion bar can be screwed by an operator and is mainly used for tightly abutting against the end head part of the fastener to keep the fastener compact. The first adjusting rod is sleeved on the outer wall of the torsion bar and can slide along the axial direction of the torsion bar so as to adjust the specific installation position of the first adjusting rod on the torsion bar in the sliding process. The second adjusting rod is arranged on the rod body of the first adjusting rod and can slide on the first adjusting rod, and the sliding direction of the second adjusting rod is the axial direction (and is also the pressing force direction) of the torsion rod. The clamping plate is arranged at the tail end of the second adjusting rod and is mainly used for supporting the bottom surface of the server assembly. Therefore, when the tool is used for installing the server component through the fastener, an operator can firstly greatly adjust the installation position of the first adjusting rod on the torsion bar, so that a larger gap is kept between the clamping plate and the tail end of the torsion bar, and the server component is clamped between the clamping plate and the torsion bar; then, the first adjusting rod can be slid on the torsion bar to enable the clamping plate to be close to the bottom surface of the server assembly, and then the second adjusting rod can be slid to enable the clamping plate to be gradually attached to the bottom surface of the server assembly; and then the second adjusting rod is continuously slid, so that the surface of the clamping plate is abutted against the bottom surface of the server assembly, the server assembly is driven to move to be close to the tail end of the torsion bar, and finally the server assembly is clamped between the tail end of the torsion bar and the clamping plate. The torsion bar is tightly pressed on the end head part of the fastener, and after the server assembly is tightly clamped, the torsion bar can be screwed to complete the assembly and disassembly of the fastener on the server assembly. In summary, the bite-type fastener clamping tool applied to the server assembly provided by the invention can conveniently and stably keep the fastening piece and the server assembly in a pressing alignment in the installation process by pressing the end of the fastening piece through the torsion bar and adjusting the installation positions of the first adjusting rod and the second adjusting rod.
Drawings
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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Wherein, fig. 1:
the device comprises a torsion bar-1, a first adjusting rod-2, a second adjusting rod-3, a clamping plate-4, an elastic hoop-5, a first adjusting bolt-6 and a second adjusting bolt-7;
handle post-101, protruding edge-102, tool bit-103.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In an embodiment of the invention, the clamping tool for the snap-in fastener applied to the server assembly mainly comprises a torsion bar 1, a first adjusting bar 2, a second adjusting bar 3 and a clamping plate 4.
The torsion bar 1 can be screwed by an operator, and is mainly used for tightly abutting against the end head of a fastener to keep the fastener compact. The first adjusting rod 2 is sleeved on the outer wall of the torsion bar 1 and can slide along the axial direction of the torsion bar 1, so as to adjust the specific installation position of the first adjusting rod 2 on the torsion bar 1 in the sliding process.
The second adjustment lever 3 is provided on the lever body of the first adjustment lever 2 and is slidable on the first adjustment lever 2 in the axial direction of the torsion beam 1 (and also in the pressing force direction). The clamping plate 4 is arranged at the tail end position of the second adjusting rod 3 and is mainly used for supporting the bottom surface of the server assembly.
Thus, when the tool is used for installing the server component through the fastener, an operator can firstly greatly adjust the installation position of the first adjusting rod 2 on the torsion bar 1, so that a larger gap is kept between the clamping plate 4 and the tail end of the torsion bar 1, and the server component is clamped between the clamping plate and the torsion bar 1; then, the first adjusting lever 2 may be slid on the torsion bar 1 such that the clamping plate 4 approaches the bottom surface of the server assembly, and then the second adjusting lever 3 may be slid such that the clamping plate 4 gradually abuts against the bottom surface of the server assembly; then, the second adjustment lever 3 is slid further so that the surface of the clamping plate 4 abuts against the bottom surface of the server assembly, and the server assembly is driven to move so as to be close to the end of the torsion bar 1, and finally, the server assembly is clamped between the end of the torsion bar 1 and the clamping plate 4. The torsion bar 1 is tightly pressed on the end part of the fastener, and after the server component is tightly clamped, the torsion bar 1 can be screwed to complete the assembly and disassembly of the fastener on the server component.
In summary, the bite-type fastener clamping tool applied to the server assembly provided by the embodiment can conveniently and stably keep the fastening piece and the server assembly in a pressing alignment in the installation process by pressing the end of the fastening piece through the torsion bar 1 and then adjusting the installation positions of the first adjusting rod 2 and the second adjusting rod 3.
In a preferred embodiment concerning the torsion beam 1, the top end of the torsion beam 1 is provided with a handle post 101. Specifically, the handle post 101 may be cylindrical, and has a diameter significantly larger than that of the torsion beam 1, and is mainly used for an operator to grip and apply force to screw the torsion beam 1.
Further, in order to improve the stability of the twisting operation of the operating worker on the handle post 101 and prevent slipping caused by the influence of sweat, oil stain and the like, the present embodiment further provides a plurality of convex edges 102 on the outer wall surface of the handle post 101 along the axial direction, so that the friction force is improved by the friction between each convex edge 102 and the palm and finger surface of the operating worker.
Further, considering that the fastening members used in the server assembly are generally standard members such as bolts, screws, etc., the present embodiment adds a bit 103 to the bottom end of the torsion beam 1. The cutting head 103 may be adapted to cooperate with the configuration of the head of the fastener, for example, where the head of the fastener is a cross-recess, the cutting head 103 may be a cross-projection.
To facilitate the sliding and mounting position adjustment of the first adjustment lever 2 on the torsion beam 1, the present embodiment is provided with an elastic hoop 5 on the head end of the first adjustment lever 2. Specifically, the elastic hoop 5 is in a shape of a broken ring, has elasticity, and is surrounded and sleeved on the rod body of the torsion bar 1. The elastic hoop 5 is further provided with first adjusting bolts 6, the first adjusting bolts 6 are inserted into both ends of the notch of the elastic hoop 5, and the elastic hoop 5 can be adjusted to contract or expand by the threaded connection and matching of the first adjusting bolts 6 and both ends of the notch, so that the clamping diameter of the elastic hoop 5 is adjusted to be equal to the diameter of the torsion bar 1. With the arrangement, when the installation position of the first adjusting rod 2 on the torsion bar 1 needs to be adjusted, the first adjusting bolt 6 can be firstly screwed, so that the elastic hoop 5 loosens the torsion bar 1, and then the sliding adjustment can be smoothly carried out; after the adjustment of the sliding position of the first adjustment lever 2 is completed, the first adjustment bolt 6 may be continuously screwed, so that the elastic hoop 5 clasps the torsion bar 1, thereby fixing the first adjustment lever 2 to the torsion bar 1.
In a preferred embodiment, the bottom end (distal end) of the torsion bar 1 is held in vertical abutment against the head of the fastener, i.e., the central axis of the torsion bar 1 is collinear with the central axis of the fastener. And the rod body of the first adjusting rod 2 can be perpendicular to the axial direction of the torsion bar 1, i.e. the first adjusting rod 2 is kept horizontal. Accordingly, the rod body of the second adjusting rod 3 can be perpendicular to the axial direction of the first adjusting rod 2, i.e. vertically distributed and vertically sliding.
In order to facilitate the sliding and installation position adjustment of the second adjusting rod 3 on the first adjusting rod 2, in this embodiment, the inside of the tail end of the first adjusting rod 2 is a hollow structure, and has an inner cavity, and an internal thread is provided on the inner wall of the inner cavity. And, the body of rod of second regulation pole 3 can wear to establish in the terminal position department of first regulation pole 2 perpendicularly, wears to establish in the inner chamber of first regulation pole 2 promptly. Meanwhile, a second adjusting bolt 7 is inserted into the tail end of the first adjusting rod 2, and the second adjusting bolt 7 is mainly used for forming threaded connection with the inner cavity of the first adjusting rod 2, so that the depth (axial length) of the tail end of the second adjusting bolt 7 inserted into the inner cavity of the first adjusting rod 2 is adjusted through screwing operation of the second adjusting bolt 7. With the arrangement, when the sliding position of the second adjusting rod 3 on the first adjusting rod 2 needs to be adjusted, the second adjusting bolt 7 can be firstly screwed, so that the tail end of the second adjusting bolt 7 slides outwards and is separated from the butt joint of the second adjusting rod 3, and the sliding position of the second adjusting rod 3 can be smoothly adjusted after the second adjusting bolt is loosened; after the sliding position of the second adjusting rod 3 is adjusted, the second adjusting bolt 7 can be continuously and reversely screwed, so that the tail end of the second adjusting bolt 7 gradually penetrates into the inner cavity of the first adjusting rod 2, the tail end of the second adjusting bolt 7 is tightly abutted against the outer wall of the second adjusting rod 3 to clamp the second adjusting bolt, and the second adjusting rod 3 is fixed at the current position.
Of course, the sliding position adjustment manner of the second adjustment lever 3 on the first adjustment lever 2 is not limited to the above-mentioned manner, and the sliding position adjustment of the second adjustment lever 3 may be realized by a gear rack transmission mechanism or the like, for example.
It should be noted that after the first adjustment lever 2 and the second adjustment lever 3 are adjusted and the server assembly and the fastener are clamped to each other by the clamping plate 4 and the torsion bar 1, in order to facilitate the operation of the worker to screw the torsion bar 1 and to attach and detach the fastener to and from the server assembly, the first adjustment bolt 6 may be first appropriately screwed in the reverse direction so that the elastic hoop 5 slightly loosens the torsion bar 1, thereby ensuring that the torsion bar 1 can perform the frictional rotation and feed motion in the elastic hoop 5 on the basis of ensuring the clamping of the torsion bar 1 and the tightening of the server assembly.
In another preferred embodiment, in order to facilitate the operation worker to screw the torsion beam 1 and secure the tightening of the server assembly, a sleeve may be previously provided on the torsion beam 1 such that the torsion beam 1 is installed in the sleeve and can perform the rotation and feed motions, such as being screwed into the sleeve. Correspondingly, the first adjusting rod 2 is adjusted to be sleeved on the outer wall of the sleeve at the moment. So set up, when the operation workman twists torsion bar 1, torsion bar 1 rotates and feed motion in the sleeve, does not have the influence completely to external sleeve and first regulation pole 2.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a press from both sides tight frock of interlock formula fastener for server subassembly which characterized in that, including be used for tight torsion bar (1) of supporting the end portion at the fastener, slidable cover locate first regulation pole (2) on the outer wall of torsion bar (1), set up second regulation pole (3) on first regulation pole (2) slidable to and set up in second regulation pole (3) terminal, be used for bearing the clamp plate (4) of server subassembly bottom surface, the slip direction of second regulation pole (3) is the axial of torsion bar (1).
2. The bite-type fastener clamping tool applied to a server component according to claim 1, wherein the top end of the torsion bar (1) is provided with a handle post (101) for facilitating gripping and applying force to screw.
3. The snap-in fastener clamping tool applied to the server assembly as claimed in claim 2, wherein a plurality of convex edges (102) for enhancing friction are axially arranged on the outer wall surface of the handle post (101).
4. The snap-in fastener clamping tool applied to the server assembly as claimed in claim 3, wherein the bottom end of the torsion bar (1) is provided with a cutter head (103) which is matched with the cutter groove at the end part of the fastener.
5. The clamp of snap fastener applied to server assembly as claimed in any one of claims 1-4, wherein an elastic hoop (5) is disposed at the head end of the first adjusting rod (2), the elastic hoop (5) is sleeved on the rod body of the torsion bar (1), and a first adjusting bolt (6) for adjusting the clamping diameter of the elastic hoop (5) is disposed on the elastic hoop.
6. The snap-in fastener clamping tool applied to the server assembly as claimed in claim 5, wherein the rod body of the first adjusting rod (2) is perpendicular to the rod body of the torsion bar (1), and the rod body of the second adjusting rod (3) is vertically slidably inserted into the rod body of the first adjusting rod (2).
7. The clamping tool for the snap-in fastener applied to the server assembly according to claim 6, wherein the tail end of the first adjusting rod (2) is hollow, and the inner wall of the first adjusting rod is provided with internal threads; the rod body of second regulation pole (3) is worn to establish perpendicularly the tail end of first regulation pole (2), just threaded connection has second adjusting bolt (7) on the tail end of first regulation pole (2), in order to pass through the terminal butt of second adjusting bolt (7) presss from both sides tightly the rod body of second regulation pole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360448.3A CN110977842A (en) | 2019-12-25 | 2019-12-25 | Be applied to interlock formula fastener of server subassembly and press from both sides tight frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360448.3A CN110977842A (en) | 2019-12-25 | 2019-12-25 | Be applied to interlock formula fastener of server subassembly and press from both sides tight frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110977842A true CN110977842A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911360448.3A Pending CN110977842A (en) | 2019-12-25 | 2019-12-25 | Be applied to interlock formula fastener of server subassembly and press from both sides tight frock |
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| Country | Link |
|---|---|
| CN (1) | CN110977842A (en) |
Citations (12)
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|---|---|---|---|---|
| DE3118984A1 (en) * | 1981-05-08 | 1982-11-25 | Hon-Kit Hongkong Lam | Screw-insertion arrangement |
| US4491041A (en) * | 1983-04-04 | 1985-01-01 | Eisner Jeffrey W | Tool for removing mandrel mounted disks |
| FI85234B (en) * | 1985-08-08 | 1991-12-13 | Sfs Stadler Ag | Device for adjusting screws |
| CN2162330Y (en) * | 1993-07-10 | 1994-04-20 | 王本准 | Valve spring assembly and disassembly tools |
| CN200963796Y (en) * | 2006-09-07 | 2007-10-24 | 周琪 | Flange dismounting rotation proof spanner |
| CN201792290U (en) * | 2010-08-20 | 2011-04-13 | 熊华华 | Self-unloading socket wrench |
| CN202278527U (en) * | 2011-08-23 | 2012-06-20 | 孟祥甫 | Handheld automatic screw-driving machine structure |
| CN203228163U (en) * | 2013-05-13 | 2013-10-09 | 北京汽车股份有限公司北京分公司 | Bolt and nut locking device |
| CN207206288U (en) * | 2017-09-23 | 2018-04-10 | 罗叶叶 | A kind of simple positioning drilling equipment of electric screw driver |
| CN107984418A (en) * | 2017-10-24 | 2018-05-04 | 武汉船用机械有限责任公司 | A kind of frock for being used to dismount nut |
| CN208826467U (en) * | 2018-10-08 | 2019-05-07 | 兰州工业学院 | A kind of bolt double end extracting tool |
| CN209453490U (en) * | 2019-01-28 | 2019-10-01 | 安徽中烟工业有限责任公司 | A kind of deduster mounting plate bolt disassembly tool |
-
2019
- 2019-12-25 CN CN201911360448.3A patent/CN110977842A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3118984A1 (en) * | 1981-05-08 | 1982-11-25 | Hon-Kit Hongkong Lam | Screw-insertion arrangement |
| US4491041A (en) * | 1983-04-04 | 1985-01-01 | Eisner Jeffrey W | Tool for removing mandrel mounted disks |
| FI85234B (en) * | 1985-08-08 | 1991-12-13 | Sfs Stadler Ag | Device for adjusting screws |
| CN2162330Y (en) * | 1993-07-10 | 1994-04-20 | 王本准 | Valve spring assembly and disassembly tools |
| CN200963796Y (en) * | 2006-09-07 | 2007-10-24 | 周琪 | Flange dismounting rotation proof spanner |
| CN201792290U (en) * | 2010-08-20 | 2011-04-13 | 熊华华 | Self-unloading socket wrench |
| CN202278527U (en) * | 2011-08-23 | 2012-06-20 | 孟祥甫 | Handheld automatic screw-driving machine structure |
| CN203228163U (en) * | 2013-05-13 | 2013-10-09 | 北京汽车股份有限公司北京分公司 | Bolt and nut locking device |
| CN207206288U (en) * | 2017-09-23 | 2018-04-10 | 罗叶叶 | A kind of simple positioning drilling equipment of electric screw driver |
| CN107984418A (en) * | 2017-10-24 | 2018-05-04 | 武汉船用机械有限责任公司 | A kind of frock for being used to dismount nut |
| CN208826467U (en) * | 2018-10-08 | 2019-05-07 | 兰州工业学院 | A kind of bolt double end extracting tool |
| CN209453490U (en) * | 2019-01-28 | 2019-10-01 | 安徽中烟工业有限责任公司 | A kind of deduster mounting plate bolt disassembly tool |
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Application publication date: 20200410 |
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