CN111379779A - Afterbody fixed assembly type bolt and special torque device - Google Patents
Afterbody fixed assembly type bolt and special torque device Download PDFInfo
- Publication number
- CN111379779A CN111379779A CN202010376403.1A CN202010376403A CN111379779A CN 111379779 A CN111379779 A CN 111379779A CN 202010376403 A CN202010376403 A CN 202010376403A CN 111379779 A CN111379779 A CN 111379779A
- Authority
- CN
- China
- Prior art keywords
- bolt
- torque device
- sleeve
- torque
- fixing part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
-
- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a tail fixing assembly type bolt and a special torque device, which comprise a bolt body, wherein the tail end of the bolt body is coaxially provided with a fixing part, and the fixing part is used for connecting a working end of the torque device; the torque device consists of a torque device body, an inner sleeve and an outer sleeve; when the torque device is used, the outer layer sleeve of the torque device body fixes a nut, the inner layer sleeve tightens a bolt, and the torque device body automatically stops once a set torque value is reached through a tool friction clutch, so that the assembly is completed; the novel bolt assembly mode reduces noise and vibration, reduces labor intensity and better meets the requirements of modern factories.
Description
Technical Field
The invention relates to the field of bolts and torque devices, in particular to a bolt with a fixedly assembled tail part and a special torque device.
Background
With the development of the automobile industry, customers have made higher demands on the safety and reliability of the threaded connection of the fastener. The traditional threaded connection has the following assembling mode: the electric or manual or pneumatic assembling tool screws the nut or the bolt, and manually clamps the bolt or the nut by using the wrench, and the defects of high labor intensity of operators, low efficiency and poor reliability guarantee are caused.
Disclosure of Invention
Aiming at the technical problems, the invention provides the bolt with the fixed and assembled tail part and the special torque device, so that the labor intensity of operators is reduced, and the assembling performance and efficiency are improved.
The utility model provides a afterbody fixed mounting type bolt, includes the bolt body, its characterized in that: the tail end of the bolt body is coaxially provided with a fixing part which is used for connecting the working end of the torque device.
In a further limitation of the above technical means, the bolt-fixing portion may have a dodecagonal cross-section, and the bolt-fixing portion may have a spline shaft shape.
The utility model provides a special torque force ware of afterbody fixed mounting type bolt, includes the torque force ware body, its characterized in that: the torsion device is characterized by further comprising an inner sleeve and an outer sleeve, one end of the inner sleeve is connected with the torsion end of the torsion device body, the other end of the inner sleeve is used for connecting a fixing portion of a bolt, one end of the outer sleeve is connected with the torsion device body, and the outer sleeve is used for tightly pushing a nut.
The technical scheme is further limited, and the inner hole of the inner-layer sleeve is an inner dodecagonal hole.
The invention has the beneficial effects that: 1) when the torque device is used, the outer layer sleeve of the torque device body fixes a nut, the inner layer sleeve tightens a bolt, and the torque device body automatically stops once a set torque value is reached through a tool friction clutch, so that the assembly is completed; the invention improves the assembly precision, the assembly moment reaches more than 95% of the rated moment, 3) the invention promotes the assembly efficiency, compare with ordinary pneumatic assembly tool, the efficiency is promoted more than 30%; 4) the novel bolt assembly mode reduces noise and vibration, reduces labor intensity and better meets the requirements of modern factories.
Drawings
FIG. 1 is a schematic view of the bolt body structure of the present invention.
FIG. 2 is a schematic cross-sectional view of a fixing portion of the present invention.
FIG. 3 is a schematic structural diagram and a state diagram of the torque converter according to the present invention.
Detailed Description
As shown in fig. 1 and 2, a tail fixing assembly type bolt comprises a bolt body 1, wherein a fixing part 2 is arranged at the tail end of the bolt body, the fixing part and the bolt body are of an integral structure and are coaxial, the fixing part is used for connecting a torque converter, and the outer diameter of the fixing part is smaller than that of a rod part of the bolt body; the cross section of the bolt fixing part is dodecagonal, and the structure of the fixing part can be replaced by a spline shaft; the fixing parts with other cross-sectional shapes are easy to break, so that the problem of breakage of the twelve-angle fixing part can be effectively avoided;
as shown in fig. 1 and 3, a special torque device for a bolt with a fixed assembly type tail part comprises a torque device body 3, an inner sleeve 4 and an outer sleeve 5, wherein the torque device is a wind cannon, one end of the inner sleeve is connected with a torque end of the torque device body in a welding mode, the other end of the inner sleeve is used for connecting a fixed part of the bolt and applying torque, one end of the outer sleeve is connected with a shell of the torque device body in a welding mode, and the outer sleeve is used for tightly pressing a nut; the inner hole of the inner layer sleeve is an inner dodecagonal hole which is just matched with the bolt fixing part, and the purpose of quick installation can be achieved.
The working principle of the invention is as follows: as shown in fig. 3, the shank of the bolt body is inserted into the through hole of the fastening member 6, the nut 7 is engaged with the shank of the bolt body, and the nut is rotated so that the flange surface of the nut is brought into abutment with the surface of the fastening member. The fixing part of the bolt body is inserted into the working end of the inner-layer sleeve, and the inner hole shape of the inner-layer sleeve is matched with the cross section shape of the fixing part, so that quick connection can be realized. The nut is a hexagonal flange nut, and the inner hole of the outer sleeve is a hexagon socket hole, so that the rotation and radial deviation of the nut can be limited; the flange portion of the nut is pressed against the surface of the tightened piece by the end of the outer sleeve, so as to limit the axial displacement of the nut. Starting the torque device body, fixing the inner sleeve on the torque end to drive the bolt body to rotate through the fixing part, and fastening the fastened piece through the bolt body and the nut.
Through the research on the commercial vehicle, the following results are found: hexagonal flange face bolts with twelve-angle tails can be used in a frame and a suspension system, stable axial force is obtained, assembly performance is improved, and labor intensity is reduced; the same kind of bolts can be developed by the company and applied to various heavy trucks of commercial vehicles. The requirements of customers are met, the market share is improved, and the bolt and the assembling tool are developed.
Where not described in detail herein, the structures are clearly shown in the drawings or are known in the art.
Claims (4)
1. The utility model provides a afterbody fixed mounting type bolt, includes the bolt body, its characterized in that: the tail end of the bolt body is coaxially provided with a fixing part which is used for connecting the working end of the torque device.
2. The tail fixing assembly type bolt according to claim 1, wherein: the bolt fixing part is a dodecagonal cross section.
3. The utility model provides a special torque force ware of afterbody fixed mounting type bolt, includes the torque force ware body, its characterized in that: the torsion device is characterized by further comprising an inner sleeve and an outer sleeve, one end of the inner sleeve is connected with the torsion end of the torsion device body, the other end of the inner sleeve is used for connecting a fixing portion of a bolt, one end of the outer sleeve is connected with the torsion device body, and the outer sleeve is used for tightly pushing a nut.
4. The special torque device for the tail fixing and assembling type bolt as claimed in claim 3, wherein: the inner hole of the inner-layer sleeve is an inner dodecagonal hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376403.1A CN111379779A (en) | 2020-05-07 | 2020-05-07 | Afterbody fixed assembly type bolt and special torque device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376403.1A CN111379779A (en) | 2020-05-07 | 2020-05-07 | Afterbody fixed assembly type bolt and special torque device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111379779A true CN111379779A (en) | 2020-07-07 |
Family
ID=71217706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010376403.1A Pending CN111379779A (en) | 2020-05-07 | 2020-05-07 | Afterbody fixed assembly type bolt and special torque device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111379779A (en) |
-
2020
- 2020-05-07 CN CN202010376403.1A patent/CN111379779A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230904 Address after: No. 2 Checheng Road, Zhangwan District, Shiyan City, Hubei Province, 442001 Applicant after: DONGFENG TRUCKS Co.,Ltd. Address before: No.40 Daling Road, Zhangwan District, Shiyan City, Hubei Province 442000 Applicant before: DONGFENG MOTOR FASTENER Co.,Ltd. |
|
| TA01 | Transfer of patent application right |