CN105800481A - Forged type pull plate and manufacturing method thereof - Google Patents
Forged type pull plate and manufacturing method thereof Download PDFInfo
- Publication number
- CN105800481A CN105800481A CN201610287823.6A CN201610287823A CN105800481A CN 105800481 A CN105800481 A CN 105800481A CN 201610287823 A CN201610287823 A CN 201610287823A CN 105800481 A CN105800481 A CN 105800481A
- Authority
- CN
- China
- Prior art keywords
- arm
- tie
- pull plate
- round steel
- forging
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forged type pull plate. The forged type pull plate comprises a round steel body; the two ends of the round steel body are each provided with a pull plate connector in a forged manner; and connector holes are formed in the pull plate connectors. The invention further discloses a manufacturing method of the forged type pull plate. Round steel serves as raw materials, and blanking is performed till the needed size is achieved; molds are adopted at the two ends of the round steel for forging so that the pull plate connectors can be formed; and the connector holes are formed in the two pull plate connectors in a machined manner. By means of the forged type pull plate and the manufacturing method of the forged type pull plate, the rolled steel utilizing rate of the pull plate can be remarkably increased, the anti-fatigue performance of the pull plate is enhanced, good corrosion resistant performance is achieved through attachment of oil paint, the pull plate is applied to a truss arm type crane, and the safety performance of the truss arm type crane can be obviously improved.
Description
Technical field
The present invention relates to a kind of forging formula arm-tie, further relate to a kind of manufacture method forging formula arm-tie.
Background technology
Truss-arm type crane is a kind of crane adopting space extremity truss structure, according to different lifting tasks, selects corresponding jib operating mode.In at present, large-tonnage truss-arm type main arm of crane epimerite arm is connected with the commonly used arm-tie of setting-up mast top.
Truss-arm type crane pulling plate is generally obtained by cutting stock mode by high strength steel plate, there is following technical problem:
1) because of configuration design reason, utilization rate of raw materials is relatively low, easily collides with in handling process.
2) after arm-tie blanking shapes and is cooled to room temperature, because of effect of expanding with heat and contract with cold, arm-tie physical length is shorter than theoretical length, there is side bending deformation and not easily shaping, impact assembling and overall performance simultaneously.
3) in cutting stock process, heat input is relatively big, and near slot place, metal grain is thick, and structure property is poor, and defect is easily formed on surface, therefore, under the effect of alternate load, it is easy to crack and crackle can quickly extend until rupturing.
4) arm-tie is generally thicker, because there is the error of perpendicularity in equipment cutting process, inconsistent near cutting torch layback plate width and back side width so that cross section unbalance stress.
5) truss-arm type crane is in lifting operation process, it is necessary to cantilever lifting and the arm that falls frequently, now widely used arm-tie, its joint stress state anti-fatigue performance is general.
6) common arm-tie cross section is rectangle, and four edge PASSs of arm-tie are poor, and this position paint is easy to fall off so that the metal exposed loses paint film and protects and corrosion.
7) common arm-tie can form one layer of hardened layer after thermal cutting blanking at facet place, under the effect of tensile load, cracks because of hardened layer plasticity difference, affects the security performance of equipment.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of forging formula arm-tie, solve in prior art arm-tie obtained by cutting stock mode by high strength steel plate cause that utilization rate of raw materials is low, anti-fatigue performance is not high, the not easily technical problem such as shaping.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of forging formula arm-tie, including round steel main body, arm-tie joint is forged at the two ends of described round steel main body respectively, and arm-tie joint offers nipple orifice.
The cross-sectional diameter of described round steel main body is not less than 30mm.
Compared with prior art, forging formula arm-tie provided by the present invention reaches to provide the benefit that: forge, by round steel Forging Technology, the arm-tie that the new-type arm-tie of two ends belt lacing replaces current steel plate air cutting blanking to obtain, utilization rate of raw materials can greatly be improved, utilization rate of raw materials reaches more than 95%, is conducive to enterprise's cost efficiency；The main part of arm-tie is round steel, and the deformation that heat treatment produces is readily obtained shaping；Round steel body outer surface does not have corner angle, not only contributes to paint attachment, improves antiseptic property, and can substantially reduce, in handling process, risk of colliding with, be applied on truss-arm type crane, it is possible to truss-arm type crane safety performance is obtained and significantly improves.
The invention also discloses a kind of manufacture method forging formula arm-tie, comprise the steps:
Step one: with round steel for raw material, blanking is to required size；
Step 2: adopt mould forging to form arm-tie joint at the two ends of round steel；
Step 3: integral quenching, temper；
Step 4: be respectively adopted mach mode on two arm-tie joints and offer nipple orifice.
Specifically comprising the following steps that of step 2
Step (201): adopt clamping device to be clamped fixing to the two ends of round steel respectively；
Step (202): adopt induction coil by arm-tie joint area round steel heating to 900 DEG C ~ 1300 DEG C and rapid jumping-up；
Step (203): adopt mould forging to form two ends arm-tie joint；
Step (204): remove burr.
Compared with prior art, the manufacture method of forging formula arm-tie provided by the invention reachesBeneficial effectIt is: because two ends arm-tie joint adopts Forging Technology technology, forging effect makes to exist around arm-tie joint bigger compressive stress, improves the anti-fatigue performance of arm-tie；Adopt round steel as raw material, it is not necessary to thermal cutting, arm-tie surface is absent from hardened layer, is favorably improved the service life of arm-tie, and is absent from bigger heat input in the arm-tie course of processing, and arm-tie overall dimensions is readily obtained guarantee；Avoid heat input huge in conventional arm-tie blanking thermal cutting process and cause the appearance of the thick phenomenon of slot surrounding grains, decrease the probability that facet defect produces, through Forging Technology effect, nipple orifice surrounding metal crystal grain is refined, and mechanical property obtains and promotes.
Accompanying drawing explanation
Fig. 1 is the structural representation of forging formula arm-tie provided by the invention.
Fig. 2 is the A direction view of Fig. 1.
In figure: 1, round steel main body；2, arm-tie joint；3, nipple orifice.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
As shown in Figure 1 and Figure 2, forging formula arm-tie, including round steel main body 1, the cross-sectional diameter of round steel main body 1 is not less than 30mm.Arm-tie joint 2 is forged at the two ends of round steel main body 1 respectively.Arm-tie joint 2 offers nipple orifice 3.Can be connected by bearing pin between arm-tie.
The invention also discloses a kind of manufacture method forging formula arm-tie, this manufacture method is applicable to above-mentioned forging formula arm-tie, specifically includes following steps:
Step one: with round steel for raw material, blanking is to required size；
Step 2: adopt mould forging to form arm-tie joint 2 at the two ends of round steel, particularly as follows:
Step (201): adopt clamping device to be clamped fixing to the two ends of round steel respectively；
Step (202): adopt induction coil to heat arm-tie joint 2 position round steel to 900 DEG C ~ 1300 DEG C, it is preferable that 1150 DEG C, and rapid jumping-up；
Step (203): adopt mould forging to form two ends arm-tie joint 2；
Step (204): remove burr.
Step 3: integral quenching, temper；
Step 4: be respectively adopted mach mode on two arm-tie joints 2 and offer nipple orifice 3.
Except arm-tie manufacture method disclosed above, arm-tie can also: select round steel as main body, then the mode welding arm-tie joint 2 at round steel two ends obtain.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (4)
1. a forging formula arm-tie, it is characterised in that including round steel main body, arm-tie joint is forged at the two ends of described round steel main body respectively, and arm-tie joint offers nipple orifice.
2. forging formula arm-tie according to claim 1, it is characterised in that the cross-sectional diameter of described round steel main body is not less than 30mm.
3. forge the manufacture method of formula arm-tie, it is characterised in that comprise the steps:
Step one: with round steel for raw material, blanking is to required size；
Step 2: adopt mould forging to form arm-tie joint at the two ends of round steel；
Step 3: integral quenching, temper；
Step 4: be respectively adopted mach mode on two arm-tie joints and offer nipple orifice.
4. the manufacture method of forging formula arm-tie according to claim 3, it is characterised in that specifically comprising the following steps that of step 2
Step (201): adopt clamping device to be clamped fixing to the two ends of round steel respectively；
Step (202): adopt induction coil by arm-tie joint area round steel heating to 900 DEG C ~ 1300 DEG C and rapid jumping-up；
Step (203): adopt mould forging to form two ends arm-tie joint；
Step (204): remove burr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287823.6A CN105800481A (en) | 2016-05-04 | 2016-05-04 | Forged type pull plate and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287823.6A CN105800481A (en) | 2016-05-04 | 2016-05-04 | Forged type pull plate and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105800481A true CN105800481A (en) | 2016-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610287823.6A Pending CN105800481A (en) | 2016-05-04 | 2016-05-04 | Forged type pull plate and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105800481A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177414A (en) * | 1982-04-12 | 1983-10-18 | Mitsubishi Heavy Ind Ltd | Heat treating device |
| CN1536095A (en) * | 2003-04-04 | 2004-10-13 | 巨力集团有限公司 | High-strength steel pipe pull-rod |
| CN101564751A (en) * | 2009-04-28 | 2009-10-28 | 巨力索具股份有限公司 | Technique for forging electric upsetting steel tie rod cap |
| CN202045311U (en) * | 2011-01-25 | 2011-11-23 | 南京中盛铁路车辆配件有限公司 | Continuous heading device for long bar stock of brake pull bar of railway freight car |
| CN202320376U (en) * | 2011-11-29 | 2012-07-11 | 太原轨道交通装备有限责任公司 | Integrally-forged hand brake pull rod jaw |
| CN202557553U (en) * | 2012-04-01 | 2012-11-28 | 包头北方创业股份有限公司 | One-piece forging hand brake pull rod |
| CN203402206U (en) * | 2013-08-02 | 2014-01-22 | 天津铁科铁路信号有限公司 | Connecting rod for railway turnout switching device |
| CN205653085U (en) * | 2016-05-04 | 2016-10-19 | 徐工集团工程机械股份有限公司 | Forging formula arm -tie |
-
2016
- 2016-05-04 CN CN201610287823.6A patent/CN105800481A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177414A (en) * | 1982-04-12 | 1983-10-18 | Mitsubishi Heavy Ind Ltd | Heat treating device |
| CN1536095A (en) * | 2003-04-04 | 2004-10-13 | 巨力集团有限公司 | High-strength steel pipe pull-rod |
| CN101564751A (en) * | 2009-04-28 | 2009-10-28 | 巨力索具股份有限公司 | Technique for forging electric upsetting steel tie rod cap |
| CN202045311U (en) * | 2011-01-25 | 2011-11-23 | 南京中盛铁路车辆配件有限公司 | Continuous heading device for long bar stock of brake pull bar of railway freight car |
| CN202320376U (en) * | 2011-11-29 | 2012-07-11 | 太原轨道交通装备有限责任公司 | Integrally-forged hand brake pull rod jaw |
| CN202557553U (en) * | 2012-04-01 | 2012-11-28 | 包头北方创业股份有限公司 | One-piece forging hand brake pull rod |
| CN203402206U (en) * | 2013-08-02 | 2014-01-22 | 天津铁科铁路信号有限公司 | Connecting rod for railway turnout switching device |
| CN205653085U (en) * | 2016-05-04 | 2016-10-19 | 徐工集团工程机械股份有限公司 | Forging formula arm -tie |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |
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| RJ01 | Rejection of invention patent application after publication |