CN102720792B - Combined type draw bar bearing impact tension - Google Patents
Combined type draw bar bearing impact tension Download PDFInfo
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- CN102720792B CN102720792B CN201210156345.7A CN201210156345A CN102720792B CN 102720792 B CN102720792 B CN 102720792B CN 201210156345 A CN201210156345 A CN 201210156345A CN 102720792 B CN102720792 B CN 102720792B
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- core bar
- bar
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- steps
- draw bar
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Abstract
The invention discloses a combined type draw bar bearing impact tension. The draw bar comprises a core bar, and steps arranged at two ends of the draw bar respectively. The core bar comprises threaded sections arranged at two ends of the core bar respectively, and a gauge section arranged in the middle portion of the core bar. Internal threaded holes are arranged on the steps. The steps are connected with the core bar at the two ends of the core bar respectively through threads arranged on the two ends of the core bar, and the steps are riveted and locked with the core bar through end faces of the steps. According to the invention, machining difficulty of the draw bar can be reduced, and material utilization is improved while machining working hour is reduced.
Description
Technical field
The present invention relates to a kind of specific alloy Steel Rod product that withstands shocks and stretch, be specially the combined type pull bar that withstands shocks and stretch.
Background technique
In order to prevent impacting the destruction that protected object is produced, conventionally take certain padded coaming or mechanism, utilize its distortion, destroy or action impact-absorbing energy, thereby the impact force that makes to act on protected object significantly declines and avoids damaging.The pull bar the present invention relates to is this type of buffering energy-absorbing product.In the time that associated mechanisms is subject to impacting, by certain structure, compressive stress is converted to the tensile stress of pull bar, the plastic deformation impact-absorbing merit of recycling rod material.Pull bar cross-sectional dimension is Φ 10mm.Former processing technology adopts the round bar shape blank entirety turning of Φ 12 × 310mm to form, and not only difficulty of processing is large, and time-consuming, take a lot of work, 5-8 hour approximately consuming time of every processing.In addition, the heavily about 254g of the round bar shape blank of Φ 12 × 310mm, and only heavy 20g left and right of pull bar product, stock utilization, less than 8%, is wasted very serious.For ensureing that rod material reaches the desirable especially high plasticity of comprehensive mechanical property, must add multiple precious alloy element, must adopt special smelting equipment and process to carry out melting and casting simultaneously, and before machining, also must carry out a series of hot working, as forging, rolling and heat treatment, cost of material is very high.So low stock utilization and so low machining efficiency are produced and have been brought totally unfavorable impact to pull bar, and processing technology, to improve stock utilization, cut down finished cost be problem demanding prompt solution.
Summary of the invention
The object of the invention is to be to provide a kind of and reduce draw-bar machine difficulty of processing, reduce machining man-hour, improve the combined type pull bar that withstands shocks and stretch of stock utilization.
The technical solution used in the present invention is as follows:
The combined type pull bar that shock resistance stretches, includes core bar and step, and core bar is divided into the thread section at two ends, the gauge length section at middle part, and described step has interior threaded hole, and step is connected on the thread section of core bar one end.
Riveted locking between described step exterior edge face and core bar.
The present invention is according to the structure characteristic at the each position of pull bar, after core bar and step are processed respectively, be connected with step internal thread by the screw thread (M6 × 6mm) of core bar one end, then carry out riveting in its end real, make connecting thread locking, finally entirety is machined to pull bar global shape again.Employing the present invention design, can make blank dimension reduce to Φ 8 × 310mm by Φ 12 × 310mm, and weight is down to 32g, the heavily about 17g of core bar, and therefore stock utilization rises to 53% left and right, has improved nearly 6 times than former technique.
For obtaining optimum assembled dimension, the most easy processing method and guaranteeing that pull bar tension failure occurs in the long scope of gauge length section middle part 280mm, the pull bar of various combination section ratio has been carried out to Mechanics Performance Testing, result is as shown in Figure 4.Can find out, under tested several cross sections combination ratios, all there is not fracture or depart from combination part, proves that the combined type pull bar of the present invention's design is feasible.The root diameter (RD) of connecting thread is defined as 3.5mm the most at last.
Brief description of the drawings
Fig. 1 is ledge structure schematic diagram of the present invention.
Fig. 2 is core bar structure schematic diagram of the present invention.
Fig. 3 is combination back stay structural representation of the present invention.
Fig. 4 is tensile stress strain curve of the present invention.
Fig. 5 is the tensile stress strain curve of prior art pull bar.
Embodiment
Referring to accompanying drawing, the combined type pull bar that shock resistance stretches, includes the screw thread 2 at core bar 1 and two ends, core bar 1 is divided into the thread section 3 at two ends, the gauge length section 4 at middle part, step has interior threaded hole 5, and step 2 is screwed together in respectively on the thread section at two ends of core bar, riveted locking between the end face of step and core bar.
Claims (1)
1. the combined type pull bar stretching that withstands shocks, is characterized in that: include core bar and step, core bar is divided into the thread section at two ends and the gauge length section at middle part, and described step has interior threaded hole, being threaded and riveting reality of step and core bar one end; Between described step end face and core bar, lock by riveting is real; After core bar and step are processed respectively, be connected with step internal thread by the screw thread of core bar one end, then carry out riveting in its end real, make connecting thread locking, finally entirety is machined to pull bar global shape again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156345.7A CN102720792B (en) | 2012-05-18 | 2012-05-18 | Combined type draw bar bearing impact tension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210156345.7A CN102720792B (en) | 2012-05-18 | 2012-05-18 | Combined type draw bar bearing impact tension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720792A CN102720792A (en) | 2012-10-10 |
| CN102720792B true CN102720792B (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210156345.7A Active CN102720792B (en) | 2012-05-18 | 2012-05-18 | Combined type draw bar bearing impact tension |
Country Status (1)
| Country | Link |
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| CN (1) | CN102720792B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4302878A1 (en) * | 1992-02-15 | 1993-08-19 | Volkswagen Ag | Motor vehicle frame member - has hollow support which can also act as additional deformation element |
| JP2006130936A (en) * | 2004-11-02 | 2006-05-25 | Minoru Kasei Kk | Impact absorber |
| CN201866054U (en) * | 2010-09-02 | 2011-06-15 | 徐工集团工程机械股份有限公司科技分公司 | Novel shaft end locking structure |
| CN201926586U (en) * | 2010-12-29 | 2011-08-10 | 海盐管件制造有限公司 | Pipe joint pull-out force testing machine |
| CN201973156U (en) * | 2011-04-01 | 2011-09-14 | 许姜德 | Damper with metal shell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000081085A (en) * | 1998-09-04 | 2000-03-21 | Mitsubishi Heavy Ind Ltd | Structural member with hysteresis damper |
| CN201621166U (en) * | 2010-03-10 | 2010-11-03 | 苏州工业园区新凯精密五金有限公司 | Riveting nut |
-
2012
- 2012-05-18 CN CN201210156345.7A patent/CN102720792B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4302878A1 (en) * | 1992-02-15 | 1993-08-19 | Volkswagen Ag | Motor vehicle frame member - has hollow support which can also act as additional deformation element |
| JP2006130936A (en) * | 2004-11-02 | 2006-05-25 | Minoru Kasei Kk | Impact absorber |
| CN201866054U (en) * | 2010-09-02 | 2011-06-15 | 徐工集团工程机械股份有限公司科技分公司 | Novel shaft end locking structure |
| CN201926586U (en) * | 2010-12-29 | 2011-08-10 | 海盐管件制造有限公司 | Pipe joint pull-out force testing machine |
| CN201973156U (en) * | 2011-04-01 | 2011-09-14 | 许姜德 | Damper with metal shell |
Non-Patent Citations (1)
| Title |
|---|
| 吸能拉杆动态拉伸冲击试验技术研究;刘黎 等;《直升机技术》;20111231(第4期);第54-57页 * |
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| Publication number | Publication date |
|---|---|
| CN102720792A (en) | 2012-10-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING INSTITUTE OF SPACECRAFT SYSTEM ENGINEERING Effective date: 20131111 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Fusheng Inventor after: Wang Xinfu Inventor after: Wang Xingfu Inventor after: Yang Jianzhong Inventor after: Zeng Fuming Inventor after: Man Jianfeng Inventor after: Zhu Wang Inventor before: Han Fusheng Inventor before: Wang Xinfu Inventor before: Wang Xingfu |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HAN FUSHENG WANG XINFU WANG XINGFU TO: HAN FUSHENG WANG XINFU WANG XINGFU YANG JIANZHONG CENG FUMING MAN JIANFENG ZHU WANG |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20131111 Address after: 230031 Shushan Lake Road, Anhui, China, No. 350, No. Applicant after: Hefei Inst. of Matter Sciences, Chinese Academy of Sciences Applicant after: Beijing Institute of Spacecraft System Engineering Address before: 230031 Shushan Lake Road, Anhui, China, No. 350, No. Applicant before: Hefei Inst. of Matter Sciences, Chinese Academy of Sciences |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |