CN106736081B - A kind of semi-automatic tooling for derrick crane pull rod - Google Patents
A kind of semi-automatic tooling for derrick crane pull rod Download PDFInfo
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- CN106736081B CN106736081B CN201611253976.5A CN201611253976A CN106736081B CN 106736081 B CN106736081 B CN 106736081B CN 201611253976 A CN201611253976 A CN 201611253976A CN 106736081 B CN106736081 B CN 106736081B
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- seat
- pull rod
- sliding
- otic placode
- tooling
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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 toolings for derrick crane pull rod, it belongs to technical field of engineering machinery.Pull rod of 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 power control cabinet and digital display station, scale type slides tooling platform, equidistant compensation fixed mechanism and sliding positioning seat, equidistant compensation fixed mechanism is connected with scale type sliding tooling platform, sliding positioning seat is movably arranged on scale type sliding tooling platform, power control cabinet and digital display station are connected to servo motor.Structure of the invention is reasonable, so that pull rod convenient welding in production, securely and reliably, high degree of automation is easy to make, and stability is high, at low cost, can be used for multiple times, meet same type different specifications tooling.
Description
Technical field
The present invention relates to a kind of devices, and more particularly, to a kind of semi-automatic tooling for derrick crane pull rod, it belongs to
In technical field of engineering machinery.
Background technique
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 continues to develop, and each producer develops the derrick crane of different size according to own situation.
And pull rod is an important component of derrick crane, include lifting arm brace peace weighing apparatus arm brace, mainly by
Bar body and the otic placode at both ends are constituted.The shape of the pull rod of the derrick crane of different size is all similar, only its length
It is different with the aperture of connecting hole, prevent original tooling is from making new pull rod, for the depth of parallelism for guaranteeing pull rod both ends otic placode
And center must remake matched pull rod tooling away from, it is ensured that product quality.
With the development of existing market, derrick crane industry has entered the customer order type life of multi-varieties and small-batch at present
Produce rhythm, it is desirable that we must be able to be rapidly completed pull rod frock making to meet production requirement, and the production of pulling plate tooling needs
Regular hour and manpower and material resources and financial resources are wanted, therefore universal pulling plate 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
For the utility model patent of " balance arm brace tooling ".This patent includes bottom plate, and left and right ends are provided with movable screw at the top of bottom plate
Mother is provided with fixed die holder on traveling nut, is provided with locating module, locating module, fixed module and activity on fixed die holder
Nut is mutually fixed by bolt with top, and locating module is provided centrally with pin shaft, and pin shaft lower end is connected in traveling nut.This is specially
Although assembling quality can be improved in benefit, the depth of parallelism that pull rod both ends otic placode is effectively ensured and center are away from the program can not expire
This demand of the pulling plate of a set of frock making different size of foot, while the weld seam welding of all otic placodes can not be completed in tooling,
Repair welding after need to taking out, product is easily-deformable, 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
For the utility model patent of " jib for tower crane pull rod welding tooling ".The patent includes pedestal, is connected with and connects on pedestal
First I, connector II, connector III and V-type seat；I top center of connector protrusion, connector II and III two sides of connector protrusion, middle concave
It falls into.Although the patent is equipped with each size connector, reasonable structural arrangement can not complete the weld seam weldering of all otic placodes in tooling
It connecing, repair welding after need to taking out, product is easily-deformable, and it is unstable, therefore still there is drawbacks described above in it.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide it is a kind of reasonable in design,
It can make pull rod convenient welding in production, securely and reliably, high degree of automation is easy to make, and stability is high, and it is at low cost, it can
To be used for multiple times, meet the semi-automatic tooling for derrick crane pull rod of same type different specifications tooling.
Technical solution used by the present invention solves the above problems is: this is used for the semi-automatic work of derrick crane pull rod
Dress, the pull rod includes bar body, otic placode one and otic placode two, and one end of bar body is connected with otic placode one, the bar body
The other end be connected with otic placode two, it is characterised in that: further include feeding positioning welding mechanism, the feeding positioning welding mechanism is equal
It is connected with otic placode one and otic placode two, feeding positioning welding mechanism includes that power control cabinet and digital display station, scale type sliding tooling are flat
The one of equidistant compensation fixed mechanism is arranged in platform, equidistant compensation fixed mechanism and sliding positioning seat, power control cabinet and digital display station
Side, this equidistantly compensates fixed mechanism and connects with scale type sliding tooling platform, and sliding positioning seat is movably arranged on scale type sliding
On tooling platform；Sliding positioning seat includes sliding table, activity orientation seat, steel bushing, fixed stop, servo motor and adjusts spiral shell
Bolt, activity orientation seat are connected with sliding table, and on sliding table, the upper end of activity orientation seat is provided with fixed stop
Steel bushing, the lower end of the activity orientation seat are connect by adjusting bolt with fixed stop, and servo motor is mounted on sliding table；
Equidistantly compensation fixed mechanism includes that equidistant compensation fixing seat, stationary positioned seat and two-way steel bushing, stationary positioned seat are mounted on
Away from compensation fixing seat, the upper end of the stationary positioned seat, which is provided with, two-way uses steel bushing；Power control cabinet and digital display station and servo electricity
Machine connection；Simple and reasonable, stability is high, and work efficiency is high, and device is adaptable, can be replaced not according to different product size
Same steel bushing meets same type different specifications tooling, high degree of automation to complete the production the pull rod of corresponding qualification.
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, which is matched with activity orientation seat by male dovetail groove and gynetype dovetail groove.
Preferably, sliding positioning seat of the present invention further includes alignment pin, activity orientation seat is two, two work
Dynamic positioning seat passes through steel bushing and is connected with alignment pin；Otic placode two is allowed to guarantee that it is parallel between two activity orientation seats
Degree and verticality.
Preferably, servo motor of the present invention is equipped with transmission gear, scale type slides tooling platform and is equipped with biography
Carry-over bar, the transmission gear and driving rack match；Enable and is integrally carving sliding positioning seat when servo motor positive and negative rotation
Degree type sliding tooling platform is moved left and right along axis, to meet the length requirement of different bar bodies.
It is moved preferably, sliding positioning seat of the present invention slides left and right on tooling platform in scale type by servo motor
It is dynamic.
Preferably, equidistant compensation fixed mechanism of the present invention and scale type sliding tooling platform pass through connection articulation spiral shell
Stud shaft is to connection.
Preferably, two-way being set with the centre-height of steel bushing and activity orientation seat of setting of stationary positioned seat of the present invention
The height of steel bushing is consistent；Ensure that the length of bar body is correct.
Preferably, power control cabinet of the present invention and digital display station by controlling cable and slide the servo on positioning seat
Motor connection.
Preferably, scale type sliding tooling platform of the present invention is equipped with mechanical scale；So that size is very clear,
Its scale precision meets the design requirement of bar body.
Compared with prior art, the present invention having the following advantages that and effect: 1, simple and reasonable, high degree of automation,
Easy to make, stability is high, and work efficiency is high, is suitable for common production and assembly line batch pull rod；2, device is adaptable, can
Different steel bushings is replaced according to different product size, to complete the production the pull rod of corresponding qualification, meets same type different size
It is required that tooling；3, degree height can be transformed in high degree of automation, subsequent to slide the pin on positioning seat and equidistant compensation fixed mechanism
Axis controls stroke using numerical control, and full-automatic processing can be achieved along with mechanical welding catcher becomes.
Detailed description of the invention
Fig. 1 is the positive structure diagram of bar body in the embodiment of the present invention
Fig. 2 is the schematic view of the front view of inventive embodiments of the present invention.
Fig. 3 is the overlooking 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 of present invention sliding 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, power control cabinet and digital display station 11, it is equidistant to compensate fixed mechanism 12, positioning seat 13 is slided, scale type slides tooling platform
14, sliding table 130, activity orientation seat 131, steel bushing 132, fixed stop 133, servo motor 134, adjusting bolt 135, biography
Moving gear 136, briquetting 137, clamping screw 138, alignment pin 139, nut 1 is equidistant to compensate fixing seat 120, and it is fixed to fix
Position seat 121, it is two-way to use steel bushing 122, retaining 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 with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1 to Fig. 5, semi-automatic tooling of the present embodiment for derrick crane pull rod includes bar body 3, otic placode
One 2, one end of otic placode 24 and feeding positioning welding mechanism 1, bar body 3 is connected with otic placode 1, the bar body 3 it is another
End 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 power control cabinet and digital display station 11, scale type slide tooling
Platform 14, equidistant compensation fixed mechanism 12 and sliding positioning seat 13, power control cabinet and the setting of digital display station 11 are solid in equidistant compensation
Determine the side of mechanism 12, this equidistantly compensates fixed mechanism 12 and scale type sliding tooling platform 14 connects, and sliding positioning seat 13 is living
Dynamic setting is on scale type sliding tooling platform 14.
Sliding positioning seat 13 in the present embodiment includes sliding table 130, activity orientation seat 131, steel bushing 132, fixes
Block 133, adjusts bolt 135, transmission gear 136, briquetting 137, clamping screw 138,139 and of alignment pin at servo motor 134
Nut 1, activity orientation seat 131 are 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 the activity orientation seat 131 is by adjusting bolt 135 and fixed stop 133
Connection opens a grade size to adjust two activity orientation seats 131 with respect to center.
Sliding table 130 in the present embodiment is equipped with a servo motor 134, which is equipped with one
The driving rack 141 that is equipped on transmission gear 316 and scale type sliding tooling platform 14 matches, so that servo motor 134 is just
13 entirety of sliding positioning seat can be moved left and right in scale type sliding tooling platform 14 along axis when reversion, to meet different pull rods
The length requirement of ontology 3.
The upper plane of sliding table 130 in the present embodiment is provided with two male dovetail grooves, at the same with beneath setting
There are two activity orientation seats 131 of gynetype dovetail groove to be connected, the sliding table 130 and activity orientation seat 131 pass through male swallow
Stern notch and the matching of gynetype dovetail groove.
Activity orientation seat 131 in the present embodiment is two, which passes through steel bushing and positioning pin
Axis is connected；So that otic placode 24 guarantees its depth of parallelism and verticality between two activity orientation seats 131.
Sliding table 130 in the present embodiment is set there are three briquetting 137, passes through three clamping screws 138 and nut one
140, it can be reached into mechanical caging with scale type sliding tooling platform 14 when sliding table 130 is moved to accurate location,
Ensure 3 size of bar body.
Equidistant compensation fixed mechanism 12 in the present embodiment includes equidistant compensation fixing seat 120, stationary positioned seat 121, double
To with steel bushing 122, retaining ring 123 and alignment pin bolt 124.
Stationary positioned seat 121 in the present embodiment is mounted in equidistant compensation fixing seat 120,121 upper end of stationary positioned seat
It is provided with a two-way steel bushing 122, and two-way steel bushing 122 is fixed on stationary positioned seat 121 with retaining ring 123, it is two-way
With in steel bushing 122 be equipped with matched alignment pin bolt 124 and nut 2 125.The two-way type and quantity with steel bushing 122 can be
Numerous, outer diameter matches with hole on stationary positioned seat 121, inner hole and general thickness according to different bar bodies 3 come
Setting, alignment pin bolt 124 and the quantity of nut 2 125 use 122 quantity of steel bushing consistent according to two-way, meet different pull rod sheets
The production demand in 3 otic placode aperture of body.
It is provided with male dovetail groove at equidistant 12 upper center of compensation fixed mechanism 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 was set two-way is set with 122 centre-height of steel bushing and activity orientation seat 131
Steel bushing height is 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 connect, after being locked by nut 2 125, it is ensured that
The depth of parallelism and verticality of otic placode.
Equidistant compensation fixed mechanism 12 and scale type sliding tooling platform in the present embodiment pass through six connection articulation spiral shells
The axial connection of bolt 5.
The left side of scale type sliding tooling platform in the present embodiment, which is equipped with, compensates what fixed mechanism 12 was connected with equidistant
Six groups of hole locations, it is ensured that upper level is consistent after being connected with equidistant compensation 120 mechanism of fixing seat.
When the present embodiment is used to both ends otic placode being soldered to the bar body 3 of derrick crane, respectively to otic placode 1 and ear
Plate 24 carries out rapid material-feeding and quickly positioning, to complete to weld.
The setting of sliding positioning seat 13 in the present embodiment passes through servo motor 134 on scale type sliding tooling platform 14
Control its scale type sliding tooling platform 14 on move left and right, with meet different 3 otic placode centers of bar body away from the needs of.
Power control cabinet and digital display station 11 in the present embodiment are arranged position and get along well scale type sliding tooling platform 14 directly
It is connected, the power control cabinet and digital display station 11 are connect by controlling cable 6 with the servo motor 134 slided on positioning seat 13,
The electric devices such as component and controller needed for inside meet necessary requirement.
121 center of stationary positioned seat set on fixed mechanism is equidistantly compensated in the present embodiment from platform and scale type sliding work
The size of 14 contact surface of assembling platform, 131 center of activity orientation seat set on sliding table 130 is one with a distance from work edge of table
It causes, it is ensured that scale type sliding 14 high scale of tooling platform is shown correctly.
Scale type sliding 14 left side of tooling platform in the present embodiment, which is equipped with, compensates what fixed mechanism 12 was connected with equidistant
Six groups of hole locations, 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 equipped with mechanical scale 142 on 14, and scale precision meets the design requirement of bar body 3, and overall length also surpasses
Cross the overall length of bar bodies 3 all at present.Scale type slides 14 length direction side of tooling platform and is equipped with driving rack 141,
The specification and length meet demand of driving rack 141.
The present embodiment controls servo motor 134 by digital control system and operates, and makes to slide the arrival respective distance of positioning seat 13, lead to
The positioning steel bushing of replacement different size is crossed, while using after mechanical locking, it is different that various types different size can be completed
The derrick crane pull rod of length makes and welding, including lifting arm brace peace weighing apparatus arm brace.
By above-mentioned elaboration, those skilled in the art can implement.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to
According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair
In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (9)
1. a kind of semi-automatic tooling for derrick crane pull rod, the pull rod includes bar body, otic placode one and otic placode two,
One end of 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: on further including
Expect that positioning welding mechanism, the feeding positioning welding mechanism are connected with otic placode one and otic placode two, feeding positioning welding mechanism packet
Include power control cabinet and digital display station, scale type sliding tooling platform, equidistant compensation fixed mechanism and sliding positioning seat, power control cabinet and
The side of equidistant compensation fixed mechanism is arranged in digital display station, this equidistantly compensates fixed mechanism and scale type sliding tooling platform
Connection, sliding positioning seat are movably arranged on scale type sliding tooling platform；Sliding positioning seat includes that sliding table, activity are fixed
Position seat, steel bushing, fixed stop, servo motor and adjusting bolt, activity orientation seat are connected with sliding table, and fixed stop is mounted in
On sliding table, the upper end of activity orientation seat is provided with steel bushing, and the lower end of the activity orientation seat is by adjusting bolt and fixation
Block connection, servo motor are mounted on sliding table；Fixed mechanism is equidistantly compensated to include equidistant compensation fixing seat, fix and determine
Position seat and two-way steel bushing, stationary positioned seat are mounted in equidistant compensation fixing seat, and the upper end of the stationary positioned seat is provided with double
To with steel bushing；Power control cabinet and digital display station are connected to servo motor.
2. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the sliding work
The upper plane for making platform is provided with male dovetail groove, and the lower plane of activity orientation seat is provided with gynetype dovetail groove, the sliding table
It is matched with activity orientation seat by male dovetail groove and gynetype dovetail groove.
3. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the sliding is fixed
Position seat further includes alignment pin, and activity orientation seat is two, which passes through steel bushing and be connected with alignment pin.
4. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the servo electricity
Machine is equipped with transmission gear, and scale type slides tooling platform and is equipped with driving rack, and the transmission gear and driving rack match.
5. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the sliding is fixed
Position seat is slided in scale type by servo motor and is moved left and right on tooling platform.
6. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the equidistant benefit
Fixed mechanism and scale type sliding tooling platform are repaid by connecting articulation bolt axle to connection.
7. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the fixation is fixed
Position seat sets two-way consistent with the height for the steel bushing that activity orientation seat is set with the centre-height of steel bushing.
8. the semi-automatic tooling according to claim 1 for derrick crane pull rod, it is characterised in that: the power control cabinet
And digital display station is connect by controlling cable with the servo motor slided on positioning seat.
9. the semi-automatic tooling for derrick crane pull rod according to claim 1 or 6, it is characterised in that: the quarter
Degree type slides tooling platform and is equipped 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 |
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| Publication Number | Publication Date |
|---|---|
| CN106736081A CN106736081A (en) | 2017-05-31 |
| CN106736081B true CN106736081B (en) | 2019-02-19 |
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ID=58953219
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| 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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| 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 |
|---|---|
| CN106736081A (en) | 2017-05-31 |
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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. |
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