CN106736081A - A kind of semi-automatic frock and welder for derrick crane pull bar - Google Patents
A kind of semi-automatic frock and welder for derrick crane pull bar Download PDFInfo
- Publication number
- CN106736081A CN106736081A CN201611253976.5A CN201611253976A CN106736081A CN 106736081 A CN106736081 A CN 106736081A CN 201611253976 A CN201611253976 A CN 201611253976A CN 106736081 A CN106736081 A CN 106736081A
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- Prior art keywords
- seat
- otic placode
- pull bar
- welder
- semi
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention relates to a kind of semi-automatic frock and welder for derrick crane pull bar, it belongs to technical field of engineering machinery.The present invention includes bar body, otic placode one, otic placode two and feeding positioning welding mechanism, one end of bar body is connected with otic placode one, the other end of the bar body is connected with otic placode two, feeding positioning welding mechanism is connected with otic placode one and otic placode two, feeding positioning welding mechanism includes electrical control cubicles and digital display operating desk, scale type slides tooling platform, equidistant compensation fixed mechanism and slip positioning seat, equidistant compensation fixed mechanism and scale type slide tooling platform connection, positioning seat is slided to be movably arranged on scale type slip tooling platform, electrical control cubicles and digital display operating desk are connected with servomotor.The present invention is rational in infrastructure so that pull bar convenient welding, safe and reliable, high degree of automation when making, easy to make, stability is high, low cost, can be used for multiple times, and meets same type different size requirement frock.
Description
Technical field
The present invention relates to a kind of device, more particularly, to a kind of for the semi-automatic frock of derrick crane pull bar and welding
Device, it belongs to technical field of engineering machinery.
Background technology
Lifting equipment is widely used in modern industry, civil high-rise buildings and electric power, water conservancy and bridge construction etc.
Field, and derrick crane is wherein the most widely used one kind.With industry technology development and product renewing, tower lifting
The product category of machine is continued to develop, and each producer develops the derrick crane of different size according to own situation.
And pull bar is an important component of derrick crane, comprising lifting arm brace peace weighing apparatus arm brace, mainly by
The otic placode at bar body and two ends is constituted.The profile of the pull bar of the derrick crane of different size is all similar, only its length
Aperture with connecting hole is different so that original frock can not make new pull bar, to ensure the depth of parallelism of pull bar two ends otic placode
And centre-to-centre spacing, it is ensured that product quality and the pull bar frock of matching must be remake.
With the development of existing market, current derrick crane industry has been enter into the customer order type life of multi-varieties and small-batch
Produce rhythm, it is desirable to which we must be able to be rapidly completed pull bar frock making to meet Production requirement, and the making of arm-tie frock is needed
Regular hour and manpower and materials and financial resources are wanted, therefore universal arm-tie Fixture Design is extremely urgent.
Publication date is on March 24th, 2014, in the Chinese patent of Publication No. 201320517334.7, discloses a kind of name
It is the utility model patent of " balance arm brace frock ".This patent includes base plate, and base plate top left and right two ends are provided with movable screw
Mother, is provided with fixed die holder on traveling nut, locating module, locating module, stuck-module and activity are provided with fixed die holder
Nut is mutually fixed by bolt with top, and locating module is provided centrally with bearing pin, and bearing pin lower end is connected in traveling nut.This is specially
Although profit can improve assembling quality, the depth of parallelism and centre-to-centre spacing of pull bar two ends otic placode is effectively ensured, the program cannot expire
The arm-tie of a set of frock making different size of foot this demand, while the weld seam welding of all otic placodes cannot be completed in frock,
Repair welding after need to taking out, product is yielding, therefore it still has drawbacks described above.
Publication date is on 08 10th, 2016, in the Chinese patent of Publication No. 205437596U, discloses a kind of title
It is the utility model patent of " jib for tower crane pull bar welding tooling ".The patent includes base, is connected with base and connect
First I, joint II, joint III and V-type seat；The crown center of joint I is raised, and joint II and the both sides of joint III are raised, middle concave
Fall into.Although the patent is equipped with each size joint, reasonable structural arrangement cannot complete the weld seam weldering of all otic placodes in frock
Connect, repair welding after need to taking out, product is yielding, unstable, therefore it still has drawbacks described above.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and a kind of reasonable in design is provided,
Pull bar convenient welding, safe and reliable, high degree of automation when making can be made, easy to make, stability is high, and low cost can
To be used for multiple times, meet same type different size requirement frock for the semi-automatic frock of derrick crane pull bar and welding
Device.
The present invention the used technical scheme that solves the above problems is：This is used for the semi-automatic frock of derrick crane pull bar
And welder, including bar body, otic placode one and otic placode two, one end of the bar body is connected with otic placode one, the pull bar
The other end of body is connected with otic placode two, it is characterised in that：Also include feeding positioning welding mechanism, the feeding positioning welding
Structure is connected with otic placode one and otic placode two, and feeding positioning welding mechanism includes that electrical control cubicles and digital display operating desk, scale type slide work
Assembling platform, equidistant compensation fixed mechanism and slip positioning seat, electrical control cubicles and digital display operating desk are arranged on equidistant compensation fixed mechanism
Side, this equidistantly compensates fixed mechanism and scale type and slides tooling platform connection, slides positioning seat and is movably arranged on scale type
Slide on tooling platform；Sliding positioning seat includes sliding table, activity orientation seat, steel bushing, fixed stop, servomotor and tune
Section bolt, activity orientation seat is connected with sliding table, and on sliding table, the upper end of activity orientation seat sets fixed stop
Steel bushing is equipped with, the lower end of activity orientation seat is connected by regulating bolt with fixed stop, servomotor is arranged on and slides work
On platform；Equidistant compensation fixed mechanism includes equidistant compensation fixed seat, stationary positioned seat and two-way use steel bushing, and stationary positioned seat is installed
In equidistant compensation fixed seat, the upper end of stationary positioned seat is provided with two-way uses steel bushing；Electrical control cubicles and digital display operating desk with watch
Take motor connection；Simple and reasonable, stability is high, high working efficiency, device strong adaptability, can be according to different product size more
Change different steel bushings to complete to make corresponding qualified pull bar, meet same type different size requirement frock, automaticity
It is high.
Preferably, the upper plane of sliding table of the present invention is provided with male dovetail groove, under activity orientation seat
Plane is provided with gynetype dovetail groove, and the sliding table is matched with activity orientation seat by male dovetail groove and gynetype dovetail groove.
Preferably, slip positioning seat of the present invention also includes alignment pin, activity orientation seat is two, two work
Dynamic positioning seat is connected by steel bushing with alignment pin；Allow that otic placode two ensures that its is parallel between two activity orientation seats
Degree and perpendicularity.
Preferably, servomotor of the present invention is provided with travelling gear, scale type slides tooling platform and is provided with biography
Carry-over bar, the travelling gear and driving rack match；Positioning seat will be slided when enabling servomotor rotating overall at quarter
Degree type is slided tooling platform and is moved left and right along axis, to meet the length requirement of different bar bodies.
Preferably, slip positioning seat of the present invention slides left and right on tooling platform by servomotor in scale type moving
It is dynamic.
Preferably, equidistant compensation fixed mechanism of the present invention and scale type slide tooling platform by connecting articulation spiral shell
Stud shaft is to connection.
Preferably, what the two-way centre-height and activity orientation with steel bushing that stationary positioned seat of the present invention sets set
Steel bushing it is highly consistent；Ensure that the length of bar body is correct.
Preferably, electrical control cubicles of the present invention and digital display operating desk are by the servo in controlling cable and slip positioning seat
Motor connection.
Preferably, scale type of the present invention slides tooling platform is provided with mechanical scale；So that size is very clear,
Its scale precision meets the design requirement of bar body.
The present invention compared with prior art, with advantages below and effect：1st, it is simple and reasonable, high degree of automation,
Easy to make, stability is high, high working efficiency, it is adaptable to common production and streamline batch pull bar；2nd, device strong adaptability, can
Different steel bushings are changed according to different product size to complete to make corresponding qualified pull bar, meet same type different size
It is required that frock；3rd, high degree of automation, can transform that degree is high, will subsequently slide the pin on positioning seat and equidistant compensation fixed mechanism
Axle controls stroke using numerical control, and full-automatic processing is capable of achieving along with mechanical welding catcher becomes.
Brief description of the drawings
Fig. 1 is the positive structure diagram of bar body in the embodiment of the present invention
Fig. 2 is the main structure diagram of inventive embodiments of the present invention.
Fig. 3 is the overlooking the structure diagram of the embodiment of the present invention.
Fig. 4 is the side structure schematic view of the equidistant compensation fixed mechanism of the embodiment of the present invention.
Fig. 5 is the side structure schematic view that the present invention slides positioning seat.
In figure：Feeding positioning welding mechanism 1, otic placode 1, bar body 3, otic placode 24 connect articulation bolt 5, control line
Cable 6, electrical control cubicles and digital display operating desk 11, equidistant compensation fixed mechanism 12, slide positioning seat 13, and scale type slides tooling platform
14, sliding table 130, activity orientation seat 131, steel bushing 132, fixed stop 133, servomotor 134, regulating bolt 135 is passed
Moving gear 136, briquetting 137, clamping screw 138, alignment pin 139, nut 1, equidistant compensation fixed seat 120 is fixed fixed
Position seat 121, two-way use steel bushing 122, back-up ring 123, alignment pin bolt 124, nut 2 125, driving rack 141, mechanical scale
142。
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Embodiment.
Referring to Fig. 1 to Fig. 5, the semi-automatic frock and welder that the present embodiment is used for derrick crane pull bar include pull bar
Body 3, otic placode 1, otic placode 24 and feeding positioning welding mechanism 1, one end of bar body 3 are connected with otic placode 1, the pull bar
The other end of body 3 is connected with otic placode 24, and feeding positioning welding mechanism 1 is connected with otic placode 1 and otic placode 24.
Feeding positioning welding mechanism 1 in the present embodiment includes that electrical control cubicles and digital display operating desk 11, scale type slide frock
It is solid that platform 14, equidistant compensation fixed mechanism 12 and slip positioning seat 13, electrical control cubicles and digital display operating desk 11 are arranged on equidistant compensation
Determine the side of mechanism 12, this equidistantly compensates fixed mechanism 12 and scale type slides tooling platform 14 and connects, and slides positioning seat 13 and lives
The dynamic scale type that is arranged on is slided on tooling platform 14.
Slip positioning seat 13 in the present embodiment includes sliding table 130, activity orientation seat 131, steel bushing 132, fixes
Block 133, servomotor 134, regulating bolt 135, travelling gear 136, briquetting 137, clamping screw 138, the and of alignment pin 139
Nut 1, activity orientation seat 131 is connected with sliding table 130, and fixed stop 133 is living on sliding table 130
The upper end of dynamic positioning seat 131 is provided with steel bushing, and the lower end of activity orientation seat 131 is by regulating bolt 135 and fixed stop 133
Connection, a grade size is opened to adjust two activity orientations seats 131 with respect to center.
Sliding table 130 in the present embodiment is provided with a servomotor 134, and the servomotor 134 is provided with one
The driving rack 141 that is provided with that travelling gear 316 and scale type are slided on tooling platform 14 matches so that servomotor 134 is just
The entirety of positioning seat 13 can be slided during reversion to be moved left and right along axis in scale type slip tooling platform 14, to meet different pull bars
The length requirement of body 3.
The upper plane of the sliding table 130 in the present embodiment is provided with two male dovetail grooves, at the same with beneath setting
The two activity orientations seat 131 for having gynetype dovetail groove is connected, and the sliding table 130 passes through male swallow with activity orientation seat 131
Stern notch and gynetype dovetail groove are matched.
Activity orientation seat 131 in the present embodiment is two, and two activity orientation seats 131 pass through steel bushing and alignment pin
Axle is connected；So that otic placode 24 ensures its depth of parallelism and perpendicularity between two activity orientation seats 131.
Sliding table 130 in the present embodiment is provided with three briquettings 137, by three clamping screws 138 and nut one
140, itself and scale type can be slided into tooling platform 14 and reach mechanical caging when sliding table 130 moves to accurate location,
Ensure the size of bar body 3.
Equidistant compensation fixed mechanism 12 in the present embodiment includes equidistant compensation fixed seat 120, stationary positioned seat 121, double
To with steel bushing 122, back-up ring 123 and alignment pin bolt 124.
Stationary positioned seat 121 in the present embodiment is arranged in equidistant compensation fixed seat 120,121 upper ends of stationary positioned seat
A two-way use steel bushing 122 is provided with, and two-way steel bushing 122 is fixed on stationary positioned seat 121 with back-up ring 123, it is two-way
With alignment pin bolt 124 and nut 2 125 that matching is provided with steel bushing 122.The two-way type and quantity with steel bushing 122 can be
Numerous, its external diameter matches with hole on stationary positioned seat 121, its endoporus and general thickness according to different bar bodies 3 come
Set, alignment pin bolt 124 is consistent according to the two-way quantity of use steel bushing 122 with the quantity of nut 2 125, meets different pull bar sheets
The making demand in the otic placode aperture of body 3.
Male dovetail groove is provided with the equidistant upper center of compensation fixed mechanism 12 in the present embodiment, while being set with beneath
The equidistant compensation fixed mechanism 12 for being equipped with gynetype dovetail groove is connected.
What the stationary positioned seat 121 in the present embodiment set two-way is set with steel bushing 122 centre-height and activity orientation seat 131
Steel bushing is highly consistent, it is ensured that the length of bar body 3 is correct.
After alignment pin bolt 124 and otic placode 1 in the present embodiment are connected, after nut 2 125 is locked, it is ensured that
The depth of parallelism and perpendicularity of otic placode.
Equidistant compensation fixed mechanism 12 and scale type in the present embodiment slide tooling platform by six connection articulation spiral shells
The axially connection of bolt 5.
The left side that scale type in the present embodiment slides tooling platform is provided with what is be connected with equidistantly compensation fixed mechanism 12
Six groups of hole positions, it is ensured that upper level is consistent after being connected with equidistant compensation fixed seat 120 mechanism.
When the present embodiment is used to for two ends otic placode to be soldered to the bar body 3 of derrick crane, respectively to otic placode 1 and ear
Plate 24 carries out rapid material-feeding and quick positioning, to complete welding.
Slip positioning seat 13 in the present embodiment is arranged on scale type and slides on tooling platform 14, by servomotor 134
Control it to be slided in scale type to be moved left and right on tooling platform 14, to meet the demand of the otic placode centre-to-centre spacing of different bar bodies 3.
It is direct that electrical control cubicles and the set location of digital display operating desk 11 discord scale type in the present embodiment slides tooling platform 14
It is connected, the electrical control cubicles and digital display operating desk 11 are connected by controlling cable 6 with the servomotor 134 slided on positioning seat 13, its
The electric device such as component and controller needed for internal meets necessary requirement.
Work is slided from platform and scale type in stationary positioned 121 centers of seat set on equidistant compensation fixed mechanism in the present embodiment
Activity orientation 131 centers of seat set in the size of the contact surface of assembling platform 14, with sliding table 130 are one with a distance from work edge of table
Cause, it is ensured that scale type slides the high scale of tooling platform 14 and shows correctly.
Scale type in the present embodiment slides the left side of tooling platform 14 and is provided with what is be connected with equidistant compensation fixed mechanism 12
Six groups of hole positions, it is ensured that upper level is consistent after being connected with equidistant compensation fixed mechanism 12.Meanwhile, scale type slides tooling platform
Plane is from left to right provided with mechanical scale 142 on 14, and its scale precision meets the design requirement of bar body 3, and its overall length also surpasses
Cross the overall length of current all of bar body 3.Scale type slides the length direction side of tooling platform 14 and is provided with driving rack 141,
The specification and length of driving rack 141 meet demand.
The present embodiment controls servomotor 134 to operate by digital control system, slip positioning seat 13 is reached respective distance, leads to
The positioning steel bushing for changing different size is crossed, while after using mechanical locking, all kinds different size just can be completed different
The derrick crane pull bar of length makes and welds, including lifting arm brace peace weighing apparatus arm brace.
By above-mentioned elaboration, those skilled in the art can implement.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Claiming etc. can be with difference, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to
The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims
Scope defined in book, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of semi-automatic frock and welder for derrick crane pull bar, including bar body, otic placode one and otic placode
Two, one end of the bar body is connected with otic placode one, and the other end of the bar body is connected with otic placode two, it is characterised in that：
Also include feeding positioning welding mechanism, the feeding positioning welding mechanism is connected with otic placode one and otic placode two, feeding tack welding
Connection mechanism includes that electrical control cubicles and digital display operating desk, scale type slide tooling platform, equidistant compensation fixed mechanism and slide positioning seat,
Electrical control cubicles and digital display operating desk are arranged on the side of equidistant compensation fixed mechanism, and this equidistantly compensates fixed mechanism and scale type is slided
Tooling platform is connected, and is slided positioning seat and is movably arranged on scale type slip tooling platform；Sliding positioning seat includes sliding work
Platform, activity orientation seat, steel bushing, fixed stop, servomotor and regulating bolt, activity orientation seat are connected with sliding table, Gu
Block is determined on sliding table, the upper end of activity orientation seat is provided with steel bushing, the lower end of activity orientation seat is by regulation
Bolt is connected with fixed stop, and servomotor is arranged on sliding table；Equidistant compensation fixed mechanism includes that equidistant compensation is solid
Reservation, stationary positioned seat and two-way use steel bushing, stationary positioned seat are arranged in equidistant compensation fixed seat, stationary positioned seat it is upper
End is provided with two-way uses steel bushing；Electrical control cubicles and digital display operating desk are connected with servomotor.
2. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
The upper plane of the sliding table is provided with male dovetail groove, and the lower plane of activity orientation seat is provided with gynetype dovetail groove, should
Sliding table is matched with activity orientation seat by male dovetail groove and gynetype dovetail groove.
3. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
Described to slide positioning seat also including alignment pin, activity orientation seat is two, and two activity orientations seats pass through steel bushing and determine
Position bearing pin is connected.
4. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
The servomotor is provided with travelling gear, and scale type slides tooling platform and is provided with driving rack, the travelling gear and transmission
Tooth bar matches.
5. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
The slip positioning seat is slided in scale type by servomotor and moved left and right on tooling platform.
6. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
The equidistant compensation fixed mechanism and scale type slide tooling platform by connecting articulation bolt axle to connection.
7. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
The two-way steel bushing set with centre-height and the activity orientation seat of steel bushing that stationary positioned seat sets it is highly consistent.
8. the semi-automatic frock and welder for derrick crane pull bar according to claim 1, it is characterised in that：
The electrical control cubicles and digital display operating desk are connected by controlling cable with the servomotor slided on positioning seat.
9. the semi-automatic frock and welder for derrick crane pull bar according to claim 1 or 6, its feature exists
In：The scale type slides tooling platform and is provided with mechanical scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253976.5A CN106736081B (en) | 2016-12-30 | 2016-12-30 | A kind of semi-automatic tooling for derrick crane pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253976.5A CN106736081B (en) | 2016-12-30 | 2016-12-30 | A kind of semi-automatic tooling for derrick crane pull rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106736081A true CN106736081A (en) | 2017-05-31 |
| CN106736081B CN106736081B (en) | 2019-02-19 |
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ID=58953219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611253976.5A Active CN106736081B (en) | 2016-12-30 | 2016-12-30 | A kind of semi-automatic tooling for derrick crane pull rod |
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| Country | Link |
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| CN (1) | CN106736081B (en) |
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| JPH0813415B2 (en) * | 1993-04-07 | 1996-02-14 | 光司 坂田 | Internal welding equipment for long rectangular tube materials |
| JP2000343280A (en) * | 1999-06-07 | 2000-12-12 | Komatsu Ltd | Method and device for controlling welding positioner |
| JP2003117693A (en) * | 2001-10-10 | 2003-04-23 | Sumitomo Heavy Industries Construction Crane Co Ltd | Device and method for welding pipe yoke |
| CN101502924A (en) * | 2009-03-17 | 2009-08-12 | 山东丰汇设备技术有限公司 | Fixture for assembling and welding universal crane arm standard knot |
| CN203495799U (en) * | 2013-08-23 | 2014-03-26 | 江苏顺发重工科技有限公司 | Pull rod tool for balance arm |
| CN204565512U (en) * | 2015-04-28 | 2015-08-19 | 中国石油天然气第一建设公司 | A kind of pull bar assembly tool |
| CN205218364U (en) * | 2015-10-27 | 2016-05-11 | 徐州建机工程机械有限公司 | Big tower balance arm welding frock during tower crane uses |
| CN205437596U (en) * | 2015-12-29 | 2016-08-10 | 徐州建机工程机械有限公司 | Tower crane jib loading boom pull rod welding frock |
| CN206425721U (en) * | 2016-12-30 | 2017-08-22 | 浙江省建设机械集团有限公司 | Semi-automatic frock and welder for derrick crane pull bar |
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2016
- 2016-12-30 CN CN201611253976.5A patent/CN106736081B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0813415B2 (en) * | 1993-04-07 | 1996-02-14 | 光司 坂田 | Internal welding equipment for long rectangular tube materials |
| JP2000343280A (en) * | 1999-06-07 | 2000-12-12 | Komatsu Ltd | Method and device for controlling welding positioner |
| JP2003117693A (en) * | 2001-10-10 | 2003-04-23 | Sumitomo Heavy Industries Construction Crane Co Ltd | Device and method for welding pipe yoke |
| CN101502924A (en) * | 2009-03-17 | 2009-08-12 | 山东丰汇设备技术有限公司 | Fixture for assembling and welding universal crane arm standard knot |
| CN203495799U (en) * | 2013-08-23 | 2014-03-26 | 江苏顺发重工科技有限公司 | Pull rod tool for balance arm |
| CN204565512U (en) * | 2015-04-28 | 2015-08-19 | 中国石油天然气第一建设公司 | A kind of pull bar assembly tool |
| CN205218364U (en) * | 2015-10-27 | 2016-05-11 | 徐州建机工程机械有限公司 | Big tower balance arm welding frock during tower crane uses |
| CN205437596U (en) * | 2015-12-29 | 2016-08-10 | 徐州建机工程机械有限公司 | Tower crane jib loading boom pull rod welding frock |
| CN206425721U (en) * | 2016-12-30 | 2017-08-22 | 浙江省建设机械集团有限公司 | Semi-automatic frock and welder for derrick crane pull bar |
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| Publication number | Publication date |
|---|---|
| CN106736081B (en) | 2019-02-19 |
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Address after: The city of Hangzhou city of Zhejiang province Zhaohui road 310014 No. 175 under Lian Jin building block A Patentee after: Zhejiang Construction Engineering Machinery Group Co.,Ltd. Address before: The city of Hangzhou city of Zhejiang province Zhaohui road 310014 No. 175 under Lian Jin building block A Patentee before: ZHEJIANG CONSTRUCTION MACHINERY GROUP Co.,Ltd. |