CN205111752U - C70 type open car overhauls special drift - Google Patents
C70 type open car overhauls special drift Download PDFInfo
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- CN205111752U CN205111752U CN201520806402.0U CN201520806402U CN205111752U CN 205111752 U CN205111752 U CN 205111752U CN 201520806402 U CN201520806402 U CN 201520806402U CN 205111752 U CN205111752 U CN 205111752U
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Abstract
The utility model discloses a C70 type open car overhauls special drift relates to repair tools technical field, include the connecting portion and the application of force portion that link to each other with air tool, application of force portion is the cone, the tapering of cone is alpha, application of force portion passes through the changeover portion and links to each other with connecting portion, the changeover portion is by the curved surface solid of revolution of one section circular arc as generating line formation. Utilize application of force portion to apply external force to the bolt root of corrosion, convenient linking to each other with air tool of connecting portion is operated, and the application of force portion of cone more is favorable to getting into the bolt hole at bolt withdrawal in -process, and connecting portion link to each other with the changeover portion that application of force portion passes through the curved surface solid of revolution, can avoid stress concentration to produce. The utility model has the advantages of simple structure, convenient operation, can realize the purpose of disposable withdrawal C70 type open car hasp seat bolt, improve the life of drift, reduce the instrument cost, improve C70 type open car hasp seat bolt withdrawal's operating efficiency.
Description
Technical field
The utility model relates to maintenance tool technical field, particularly relates to a kind of C70 type open-top car maintenance special punch.
Background technology
When maintenance shop overhauls open wagon body, tear turner district open to need to disassemble car body, wherein rivet, bolt due to corrosion serious, punching technique is adopted when decomposing, namely be that exposed parts is cut, adopt drift to eject with car body mating part, complete to move back and unload operation, drift used is in the process exactly a kind of running stores.At present, company maintenance C70 type open-top car quantity account for sum more than 30% and on the rise, C70 type open-top car hasp seat diameter of bolt hole φ 17, hole depth 70mm, workshop is not suitable for C70 type open-top car specific purpose tool at present, employee utilizes common drift to need to complete moving back of bolt several times and unloads operation, and repeat to change drift, waste time and energy; Employee needs to utilize abrasive machine to carry out trimming punch voluntarily simultaneously, not only affect the normal production order, and the drift of self reliant rebuilding easily ruptures, causes the waste of cost.
Utility model content
Technical problem to be solved in the utility model is to provide simple, the easy to operate C70 type open-top car maintenance special punch of a kind of structure, can realize disposablely moving back the object of unloading bolt.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of C70 type open-top car maintenance special punch, comprise the connecting portion and force section that are connected with pneumatic tools, described force section is cone, and the tapering of described cone is α, described force section is connected with connecting portion by changeover portion, and described changeover portion is the revolution solid of curved surface formed as bus by one section of circular arc.
Preferably, described connecting portion root is provided with annular boss and is connected with changeover portion, described connecting portion and annular boss junction arc transition, and knuckle radius is r; Described force section and changeover portion arc transition, knuckle radius is R; Described connecting portion end-beveling.
Preferably, the tapering α of described force section is 1 °, and the length L of described connecting portion and force section is 80mm, described force section outside diameter d1 is 16mm, connecting portion diameter d 2 is 31mm, and the outside diameter d3 of described changeover portion is 30mm, and the diameter D of connecting portion root annular boss is 40mm; Knuckle radius r is 4.5mm, R is 10mm.
Preferably, the material of described drift adopts T8A, and punch head surface hardness is HRC48-52.
The beneficial effect adopting technique scheme to produce is: utilize force section to apply external force to the bolt root of corrosion, be connected with pneumatic tools by connecting portion, handled easily human users, the force section of cone is unloaded in process at Bolt-withdrawing device and is more conducive to entering bolt hole, connecting portion and annular boss, force section and changeover portion are the application of arc transition and surface blending section, can avoid the generation that stress is concentrated.The utility model has simple, the easy to operate advantage of structure, can realize disposablely moving back the object of unloading C70 type open-top car hasp seat bolt, improves the service life of drift, reduces instrument cost, improves the operating efficiency that C70 type open-top car hasp seat Bolt-withdrawing device unloads.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
In figure: 1-connecting portion, 2-force section, 3-changeover portion, 4-boss.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of C70 type open-top car maintenance special punch as shown in Figure 1, comprise the connecting portion 1 and force section 2 that are connected with pneumatic tools, described force section 2 is cone, the tapering of described cone is α, described force section 2 is connected with connecting portion 1 by changeover portion 3, the revolution solid of curved surface that described changeover portion 3 is formed as bus by one section of circular arc.Described connecting portion 1 root is provided with annular boss 4 and is connected with changeover portion 3, described connecting portion 1 and annular boss 4 junction arc transition, and knuckle radius is r; Described force section 2 and tapering transition section 3 arc transition, knuckle radius is R; Described connecting portion 1 end-beveling.Changeover portion 3 is revolution solid of curved surface, the cone afterbody of force section 2 and changeover portion 3 and connecting portion 1 all adopt arc transition with annular boss 4 junction, stress can be avoided to concentrate and produce; The large footpath that is designed and sized to of force section 2 cone is slightly less than bolt large diameter, and length is greater than bolt hole length, meets force section 2 and can penetrate bolt hole as the site of action of drift, realize moving back of bolt and unload.
In order to match with the size of C70 type open-top car hasp seat bolt hole, the tapering α of described force section 2 is 1 °, the length L of described connecting portion 1 and force section 2 is 80mm, described force section 2 outside diameter d1 is 16mm, connecting portion 1 diameter d 2 is 31mm, the outside diameter d3 of described tapering transition section 3 is 30mm, and the diameter D of connecting portion 1 root annular boss 4 is 40mm; Knuckle radius r is 4.5mm, R is 10mm.
In order to improve the mechanical performance of drift, the material of described drift adopts T8A, and the case hardness of drift is HRC48-52.Heat treatment adopts quenching and high tempering, and after making punch head surface heat treatment, hardness controls at HRC48-52, is the toughness in order to improve drift, reduces the spoilage of drift, and conventional punch demand fulfillment company standard HRC50-55.
In sum, the utility model has simple, the easy to operate advantage of structure, force section is utilized to apply external force to the bolt root of corrosion, connecting portion is connected with pneumatic tools, the hand-held pneumatic tools operation of handled easily personnel, to force section force, the force section of cone is unloaded in process at Bolt-withdrawing device and is more conducive to entering bolt hole, connecting portion and annular boss and force section and tapering transition section are arc transition, can avoid the generation that stress is concentrated.Utilize the utility model can realize disposablely moving back the object of unloading C70 type open-top car hasp seat bolt, improve the service life of drift, reduce instrument cost, improve the operating efficiency that C70 type open-top car hasp seat Bolt-withdrawing device unloads.
Claims (4)
1. a C70 type open-top car maintenance special punch, it is characterized in that: comprise the connecting portion (1) and force section (2) that are connected with pneumatic tools, described force section (2) is cone, the tapering of described cone is α, described force section (2) is connected with connecting portion (1) by changeover portion (3), and described changeover portion (3) is the revolution solid of curved surface formed as bus by one section of circular arc.
2. C70 type open-top car maintenance special punch according to claim 1, it is characterized in that: described connecting portion (1) root is provided with annular boss (4) and is connected with changeover portion (3), described connecting portion (1) and annular boss (4) junction arc transition, knuckle radius is r; Described force section (2) and changeover portion (3) arc transition, knuckle radius is R; Described connecting portion (1) end-beveling.
3. C70 type open-top car maintenance special punch according to claim 2, it is characterized in that: the tapering α of described force section (2) is 1 °, the length L of described connecting portion (1) and force section (2) is 80mm, described force section (2) outside diameter d1 is 16mm, connecting portion (1) diameter d 2 is 31mm, the outside diameter d3 of described changeover portion (3) is 30mm, and the diameter D of connecting portion (1) root annular boss (4) is 40mm; Knuckle radius r is 4.5mm, R is 10mm.
4. C70 type open-top car maintenance special punch according to claim 1, is characterized in that: the material of described drift adopts T8A, and punch head surface hardness is HRC48-52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520806402.0U CN205111752U (en) | 2015-10-19 | 2015-10-19 | C70 type open car overhauls special drift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520806402.0U CN205111752U (en) | 2015-10-19 | 2015-10-19 | C70 type open car overhauls special drift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205111752U true CN205111752U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520806402.0U Active CN205111752U (en) | 2015-10-19 | 2015-10-19 | C70 type open car overhauls special drift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205111752U (en) |
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2015
- 2015-10-19 CN CN201520806402.0U patent/CN205111752U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 051430 Shijiazhuang Province, Luancheng City, Shijiazhuang province equipment Industrial Park, Yu Xiang street, No. 168 Patentee after: CRRC SHIJIAZHUANG CO., LTD. Address before: 050000 No. 168 Yu Xiang street, Luancheng District, Hebei, Shijiazhuang Patentee before: CSR SHIJIAZHUANG ROLLING STOCK WORKS |