CN203843783U - Pretightening device - Google Patents
Pretightening device Download PDFInfo
- Publication number
- CN203843783U CN203843783U CN201420199555.9U CN201420199555U CN203843783U CN 203843783 U CN203843783 U CN 203843783U CN 201420199555 U CN201420199555 U CN 201420199555U CN 203843783 U CN203843783 U CN 203843783U
- Authority
- CN
- China
- Prior art keywords
- nut
- disc
- disk
- core rod
- pretightening
- 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.)
- Expired - Fee Related
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model discloses a pretightening device which comprises a disc, a core rod, a press plate and a driving device. The top end of the core rod is connected with the driving device. The pretightening device is characterized in that an external thread is arranged at the bottom end of the core rod, each of the disc and the press plate is provided with a central hole, the bottom end of the core rod sequentially penetrates the central holes of the disc and the press plate to be locked through a nut A, a retaining plate is arranged on the core rod and disposed at the top end of the disc, and an antiskid layer is arranged on the side wall of the disc. By arranging the disc to pretighten a nut, the nut can be quickly pretightened, and proper pretightening force can be provided. The pretightening device is simple in structure, low in labor intensity, high in working efficiency and high in universality, using amount of special equipment can be reduced remarkably, and the defects in a manual nut pretightening method are overcome effectively.
Description
Technical field
The utility model relates to a kind of pre-tightening apparatus, particularly a kind of device of nut pretension.
Background technology
In the process of dynamo-electric, mechanical assembling, maintenance and combination, often can relate to locking or the pretension of various model nuts.The main instrument using is common wrench, pneumatic impact spanner or the electric wrench of different model at present, one by one locking or pretension.And because the model of nut is different, spanner does not possess again certain versatility, the model that makes spanner also often change, the pretightning force of each nut is inconsistent, labour intensity greatly, inefficiency.Don't you retrieve documents? if have or advise explaining in background technology.
Utility model content
For overcoming nut pretension in prior art, exist the pretightning force of each nut inconsistent, ineffective deficiency, the utility model provides a kind of pre-tightening apparatus, this pre-tightening apparatus is simple in structure, labour intensity is little, operating efficiency is high, universal performance is good.
The utility model is achieved by following technical solution.
A kind of pre-tightening apparatus, comprise disk, core bar, pressing plate and drive unit, the top of core bar is connected with drive unit, it is characterized in that: described core bar bottom is provided with external screw thread, described disk and pressing plate all have centre bore, and lock by nut A after the centre bore through disk and pressing plate successively core bar bottom, is also provided with baffle plate on core bar, this baffle plate is placed in disk top, and disk sidewall is provided with skid resistant course.
It also comprises a positioning fixture, and this positioning fixture is placed in described disk below and top has for clamping the work nest of workpiece.
Described skid resistant course is rubber layer or layer of silica gel.
Described drive unit is motor.
From architectural feature of the present utility model, can find out, the utility model has the advantage of: this pre-tightening apparatus is given a plurality of nut pretensions by disk is set simultaneously, pre-load nut fast, and suitable pretightning force can be provided.Simple in structure, labour intensity is little, operating efficiency is high, universal performance is good, can reduce significantly the use amount of special equipment, effectively overcomes the deficiency existing in the method for manual pre-load nut.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the three-dimensional structure diagram of positioning fixture in the utility model;
In figure: 1-core bar, 2-baffle plate, 3-disk, 4-pressing plate, 5-nut A, 6-positioning fixture, 7-workpiece, 8-packing ring, 9-double-screw bolt, 10-nut B, 11-drive unit, 12-work nest.
The specific embodiment
Below in conjunction with accompanying drawing, further describe the technical solution of the utility model, but described in claimed scope is not limited to.
As shown in Figures 1 to 3, a kind of pre-tightening apparatus that the utility model provides, comprise disk 3, core 1 bar, pressing plate 4 and drive unit 11, the top of core bar 1 is connected with drive unit 11, it is characterized in that: described core bar 1 bottom is provided with external screw thread, and described disk 3 and pressing plate 4 all have centre bore, lock by nut A5 after the centre bore through disk 3 and pressing plate 4 successively core bar 1 bottom, on core bar 1, be also provided with baffle plate 2, this baffle plate 2 is placed in the top of disk 3, and disk 3 sidewalls are provided with skid resistant course.
It also comprises a positioning fixture 6, and this positioning fixture 6 is placed in described disk 3 belows and top has for clamping the work nest 12 of workpiece 7.
Described skid resistant course is rubber layer or layer of silica gel.
Drive unit 11 can be motor, drilling machine or other equipment, and this pre-tightening apparatus directly clamping, on the main shaft of rotation, rotarily drives its rotation by main shaft; Also can be connected with the main shaft of motor, drilling machine or other equipment by belt transmission, gear drive or other transmission mechanisms, by main shaft, by transmission mechanism, drive pre-tightening apparatus to rotate.
During use, after needing the nut B10 of pretension and packing ring 8 to be enclosed within on double-screw bolt 9, nut B10 is put in position, the side of nut B10 is contacted with the skid resistant course of disk 3 sides, between skid resistant course and nut B10, there is certain frictional force, utilize the effect of this frictional force that nut B10 is screwed rapidly.
In the course of the work, on disk 3 excircles, can place a plurality of nut B10 simultaneously and lock, obviously improve the efficiency of nut B10 pretension.
Above-mentioned pre-tension method in use, because the rotary speed of disk 3 is very fast, frictional force between it and nut B10 is also larger, by hand, take the mode of workpiece to process more dangerous, and the bad control of the adhesive force between nut B10 and skid resistant course, if the too small meeting of adhesive force causes the pretightning force of nut B10 not enough.Therefore increased workpiece positioning clamp 6, positioning fixture 6 is provided with the work nest 12 that clamps workpiece.
Positioning fixture 6 is placed on rational position, and itself and work top are fixed together.Add man-hour, the work nest 12 that the workpiece 7 of needs processing is put on positioning fixture 6 can be processed, and does not need operating personnel to arrest processed workpiece 7 always; And utilize this positioning fixture 6, as long as clamp after workpiece 7 is put into position, the pretightning force of nut B10 just can obtain reasonable control.The work nest 12 of positioning fixture 6 can be processed into different shapes according to the shape of workpiece to be machined, to facilitate workpiece to install.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations.In every case be not depart from technical solutions of the utility model content, according to technical spirit of the present utility model, to any simple modification made for any of the above embodiments, equivalent variations or modification, all belong in the scope of technical solutions of the utility model.
Claims (4)
1. a pre-tightening apparatus, comprise disk (3), core bar (1), pressing plate (4) and drive unit (11), the top of core bar (1) is connected with drive unit (11), it is characterized in that: described core bar (1) bottom is provided with external screw thread, described disk (3) and pressing plate (4) all have centre bore, core bar (1) bottom is successively through locking by nut A (5) after the centre bore of disk (3) and pressing plate (4), on core bar (1), be also provided with baffle plate (2), this baffle plate (2) is placed in disk (3) top, and disk (3) sidewall is provided with skid resistant course.
2. pre-tightening apparatus according to claim 1, it is characterized in that: it also comprises a positioning fixture (6), this positioning fixture (6) is placed in described disk (3) below and top has the work nest (12) for clamping workpiece (7).
3. pre-tightening apparatus according to claim 1, is characterized in that: described skid resistant course is rubber layer or layer of silica gel.
4. pre-tightening apparatus according to claim 1, is characterized in that: described drive unit (11) is motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199555.9U CN203843783U (en) | 2014-04-23 | 2014-04-23 | Pretightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199555.9U CN203843783U (en) | 2014-04-23 | 2014-04-23 | Pretightening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203843783U true CN203843783U (en) | 2014-09-24 |
Family
ID=51556841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199555.9U Expired - Fee Related CN203843783U (en) | 2014-04-23 | 2014-04-23 | Pretightening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203843783U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405681A (en) * | 2019-07-26 | 2019-11-05 | 安徽安凯汽车股份有限公司 | An electric pretensioning device for a triangular arm of a passenger car |
| CN110822038A (en) * | 2019-11-19 | 2020-02-21 | 常州脉康仪医疗机器人有限公司 | Pre-tightening device for wheel transmission |
-
2014
- 2014-04-23 CN CN201420199555.9U patent/CN203843783U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405681A (en) * | 2019-07-26 | 2019-11-05 | 安徽安凯汽车股份有限公司 | An electric pretensioning device for a triangular arm of a passenger car |
| CN110822038A (en) * | 2019-11-19 | 2020-02-21 | 常州脉康仪医疗机器人有限公司 | Pre-tightening device for wheel transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 563000 Guizhou city of Zunyi Province Sui Yang Lu Tianyi factory Co-patentee after: GUIZHOU TIANYI TECHNOLOGY Co.,Ltd. Patentee after: GUIZHOU TIANYI ELECTRICAL Co.,Ltd. Address before: 563000 Guizhou city of Zunyi Province Sui Yang Lu Tianyi factory Co-patentee before: GUIZHOU TIANYI AUTO ELECTRICAL Co.,Ltd. Patentee before: GUIZHOU TIANYI ELECTRICAL Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180330 Address after: 563002 Guizhou city of Zunyi province Huichuan District Sui Yang Road, No. 33 Patentee after: GUIZHOU TIANYI TECHNOLOGY Co.,Ltd. Address before: 563000 Guizhou city of Zunyi Province Sui Yang Lu Tianyi factory Co-patentee before: GUIZHOU TIANYI TECHNOLOGY Co.,Ltd. Patentee before: GUIZHOU TIANYI ELECTRICAL Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20200423 |