CN203526931U - Device for automatically screwing up double-end stud and nuts - Google Patents
Device for automatically screwing up double-end stud and nuts Download PDFInfo
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- CN203526931U CN203526931U CN201320642283.0U CN201320642283U CN203526931U CN 203526931 U CN203526931 U CN 203526931U CN 201320642283 U CN201320642283 U CN 201320642283U CN 203526931 U CN203526931 U CN 203526931U
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Abstract
The utility model discloses a device for automatically screwing up double-end studs and nuts. The device comprises an arch-shaped support, a screw rod, a transverse guide rail, a motor, a longitudinal guide rail, a screwing-up cylinder, a lifting device and a supporting claw, wherein the screw rod and the transverse guide rail are installed on the upper portion of the support, the motor is connected with the screw rod, the longitudinal guide rail is perpendicular to the transverse guide rail, the screwing-up cylinder, the lifting device and the supporting claw are located on the upper portion of the longitudinal guide rail. The device for automatically screwing up the double-end studs and the nuts is used for automatically screwing up a large number of double-end studs and nuts, wherein the double-end studs and the nuts are regularly distributed on a long and thin workpiece; not only are the reliability, accuracy and interference rejection of a screwing-up system guaranteed, but also screwing-up consistency and screwing-up efficiency can be improved.
Description
Technical field
The utility model belongs to for tightening the device of double-screw bolt and nut, is specifically related to a kind of automatic screwing device of stud bolt an nut.
Background technology
Studs refers to all threaded cylindrical securing members of two ends, is widely used in electric power, chemical industry, oil refining, valve, railway, bridge, steel structure, vapour rub accessory, machinery, boiler steel structure, tower crane, large-span steel and heavy construction etc.Stud connecting is that one of studs is screwed into the screw that is coupled one of part, and other end is coupled part through hole through another, then overlaps upper gasket, fastening nut.The assembling of studs, need to just can complete by special instrument, conventionally the double-ended adopting is to rely on external force rotary threaded sleeve, the tail end of studs is screwed in to swivel nut, the pressure producing by the top thick stick in swivel nut and studs end contact again screws in its head end in matrix, finally by reverse rotation power, swivel nut is screwed off from studs.
It is a kind of fixing instrument of using that nut is called again nut, and its center is porose, and there is screw thread the inner side in hole.Nut is often used in conjunction with the bolt that size is harmonious, to fix relevant joint part, in order to transmit the machine components of motion or power.Nut is hexagon more, is secondly square.When carrying out mechanical device assembling, it is a kind of general connected mode that nuts and bolt connects, therefore the electric hand drill of tightening for nut is an important hand-operated tools, for express delivery, efficiently by nut screwing clamping, at the existing electric hand drill of tightening for nut, all that impact wrench and electric hand drill are directly linked together, but in rundown process, tighten between sleeve and nut and can produce lateral pressure, add the friction between top nut and bolt, side force can cause additional moment, this additional moment can play a reverse effect to respectively tightening the work moment of axle, belong to a kind of harmful moment.Isoparametric different according to bolt reference diameter and the diameter of bolt, additional moment can reach the 3%-6% that target is reversed, and can form uncertain impact in 3%-6% scope to the screw-down torque of nut.
For single slender piece, there are equally distributed batch studs or nut to tighten, traditional studs or nut screwing clamping method are for electricity consumption or pneumatic impact spanner are tightened artificially, its shortcoming is that large, the consuming time length of workload, efficiency are low, and tighten degree varies, the size of moment of torsion is difficult to control quantitatively and show.
Summary of the invention
The utility model proposes in order to overcome the art shortcoming existing in prior art, its objective is the automatic screwing device that a kind of stud bolt an nut is provided.
The technical solution of the utility model is:
An automatic screwing device for stud bolt an nut, comprises bearing, leading screw, motor, cross slide way, longitudinal rail, tightens cylinder, uplifting device, support claw, and described bearing is arc, arc top, arc bottom and platform, consists of; Arc top is provided with two cross slide waies and the leading screw being parallel to each other, and leading screw is between two cross slide waies, and one end of leading screw connects motor, and travelling nut one side is fixedly connected with the longitudinal rail back side; Arc lower bottom end forms platform to bearing opening one side extension, and two uplifting device cylinders are installed on respectively on platform, and two uplifting device guide rails assemblings are in the position corresponding with uplifting device, arc bottom; Described support claw is fixed on uplifting device, the width fit in gap on the width of support claw and conveyer belt; Installation of sensors is on conveyer belt; Longitudinal rail and cross slide way vertical distribution, longitudinal rail back is provided with two transverse shifting slide blocks, transverse shifting slide block and longitudinal rail back form C type, transverse shifting slide block opening part spiral-lock is in the groove of cross slide way, the upper end of longitudinal rail is provided with tightens cylinder, and the cylinder axis of tightening cylinder is connected with tightening mechanism by connector; Tightening mechanism back is provided with two and vertically moves slide block, vertically move slide block identical with the combination of cross slide way and transverse shifting slide block with the combination of longitudinal rail, the drive rod of tightening mechanism is connected with tappet head, control system respectively with motor, sensor, tighten motor and be connected with the signal of torque sensor control box, it is controlled.
Described tightening mechanism comprises that bottom surface has the casing of two through holes that match with drive rod size, box house is provided with that two covers connect respectively successively tightens motor, power transmission shaft, speed regulator and drive rod, be installed on the torque sensor on drive rod, and the torque sensor control box being connected with the torque sensor other end, the moment of torsion data of set-up of control system are transferred to torque sensor by torque sensor control box, further control the torque of drive rod.
Described tappet head is double end stud screwing head, double end stud screwing head comprises upper bush, studs lower sleeve, top thick stick, coupling sleeve, steel ball and needle roller, in described upper bush, be formed centrally through hole, the diameter of the pore size of through hole and top thick stick matches, the inwall of upper bush is formed with tilting stopper slot, and the lower end edge of upper bush is evenly distributed in screw; The cross section of described studs lower sleeve is convex, the aperture of boss portion external diameter and through hole matches, in be formed centrally different diameter hole, epimere is unthreaded hole, the diameter of aperture and steel ball matches, and be less than the aperture of through hole, the different diameter hole hypomere of studs lower sleeve is screwed hole, and mate with the diameter of studs in screwed hole aperture, and the lower end edge of studs lower sleeve is evenly distributed in lower screw, lower screw is through hole, and position and upper screw match; Described steel ball is placed in the unthreaded hole of lower sleeve; Needle roller is arranged in the needle roller hole on the outer wall of thick stick lower end, top, and size matches with stopper slot; The upper end of described top thick stick is formed with lower fixed pin holes, and the lower end of top thick stick is stretched in the through hole of upper bush, and upper end is stretched in the shoulder hole of coupling sleeve, by lower steady pin and coupling sleeve, fixes; In described coupling sleeve, be formed centrally shoulder hole, shoulder hole is divided into upper and lower two sections, and the diameter of epimere pore size and drive rod matches, and the diameter of the pore size of hypomere and top thick stick matches; The upper end of coupling sleeve is formed with fixed pin holes, and lower end is formed with lower fixed pin holes, and both pore sizes match with upper steady pin and lower steady pin size respectively.
Described tappet head is nut screwing clamping head, and the structure of the structure of nut screwing clamping head and double end stud screwing head is basic identical, and only the different diameter hole hypomere at nut lower sleeve is inner hexagonal hole, and mate with the external hexagonal shape of nut in inner hexagonal hole aperture.
Described control system is INTEL single-chip microcomputer.
The automatic screwing device of a kind of stud bolt an nut of the utility model carries out tightening of studs, nut by multiple control modes, can not only realize functions such as automatically recognizing cap, automatic deloading, automatic tightening, can also effectively improve and tighten efficiency, be particularly suitable for the automatic tightening of equally distributed studs in enormous quantities on parts.Meanwhile, this device is also applicable to the batch double end stud screwing of other regular distributions.
Accompanying drawing explanation
Fig. 1 is the front view of the automatic screwing device of a kind of stud bolt an nut of the utility model;
Fig. 2 is the left view of the automatic screwing device of a kind of stud bolt an nut of the utility model;
Fig. 3 is the top view of the automatic screwing device of a kind of stud bolt an nut of the utility model;
Fig. 4 is the structural representation of the tightening mechanism in the utility model;
Fig. 5 is the partial enlarged drawing of A part in Fig. 1;
Fig. 6 is the partial enlarged drawing of B part in Fig. 2;
Fig. 7 is the assembly structure schematic diagram of double end stud screwing head in the utility model;
Fig. 8 is the assembly structure schematic diagram of nut screwing clamping head in the utility model;
Fig. 9 is the structural representation of the upper bush of tappet head in the utility model;
Figure 10 is the structural representation of the studs lower sleeve of tappet head in the utility model;
Figure 11 is the structural representation of the nut lower sleeve of tappet head in the utility model;
Figure 12 is the upward view of the nut lower sleeve of tappet head in the utility model;
Figure 13 is the structural representation of the top thick stick of tappet head in the utility model;
Figure 14 is the structural representation of the coupling sleeve of tappet head in the utility model.
Wherein:
1 bearing 2 leading screws
3 motor 4 cross slide waies
5 longitudinal rails 6 are tightened cylinder
7 tightening mechanism 8 tappet heads
8 ' double end stud screwing head 8 " nut screwing clamping head
9 uplifting device 10 support claws
11 sensor 12 control systems
13 conveyer belt 14 slender pieces
101 arc bottom, arc tops 102
103 platform 201 travelling nuts
401 groove 402 transverse shifting slide blocks
501 vertically move slide block 601 cylinder axis
602 connector 701 casings
702 tighten motor 703 power transmission shafts
704 speed regulator 705 torque sensors
706 torque sensor control box 707 drive rods
801 upper bush 802 studs lower sleeves
802 ' nut lower sleeve 803 top thick sticks
804 coupling sleeve 806 steel balls
Steady pin on 807 needle rollers 808
809 times steady pin 810 hexagon socket head cap screws
811 through hole 812 stopper slots
Screw 814 boss portion on 813
815 unthreaded hole 816 screwed holes
816 ' inner hexagonal hole 817 times screw
818 times fixed pin holes 819 needle roller holes
Fixed pin holes on 820 shoulder holes 821
822 studs 822 ' nuts
901 uplifting device cylinder 902 uplifting device guide rails.
The specific embodiment
Below, with reference to drawings and Examples, the automatic screwing device of a kind of stud bolt an nut of the utility model is elaborated:
As shown in Fig. 1 ~ 3, a kind of automatic screwing device of stud bolt an nut, comprises bearing 1, and described bearing 1 is arc, comprises arc top 101, arc bottom 102 and platform 103.
Arc top 101 is provided with two cross slide waies 4 and the leading screw 2 being parallel to each other, leading screw 2 is between two cross slide waies 4, one end of leading screw 2 connects motor 3, travelling nut 201 1 sides are fixedly connected with longitudinal rail 5 back sides, travelling nut 201 and leading screw 2 engagements, when leading screw 2 rotates, travelling nut 201 drives longitudinal rail 5 to move left and right along cross slide way 4;
102 bottoms, arc bottom form platform 103 to bearing 1 opening one side extension, two uplifting device cylinders 901 are installed on respectively on platform 103, article two, uplifting device guide rail 902 is arranged on the position corresponding with uplifting device 9, arc bottom 102, and uplifting device 9 moves up and down along uplifting device guide rail 902 under the effect of uplifting device cylinder 901.
Described support claw 10 is fixed on uplifting device 9, the width fit in gap on the width of support claw 10 and conveyer belt 13, and semi-circular recesses is formed at the top of support claw 10.
As shown in Figure 5,6, longitudinal rail 5 and cross slide way 4 vertical distribution, longitudinal rail 5 backs are provided with two transverse shifting slide blocks 402, transverse shifting slide block 402 forms C type with longitudinal rail 5 backs, transverse shifting slide block 402 opening part spiral-locks are in the groove 401 of cross slide way 4, the upper end of longitudinal rail 5 is provided with tightens cylinder 6, and the cylinder axis 601 of tightening cylinder 6 is connected with tightening mechanism 7 by connector 602.
As shown in Figure 4, tightening mechanism 7 backs are provided with two and vertically move slide block 501, vertically move slide block 501 identical with the combination of cross slide way 4 and transverse shifting slide block 402 with the combination of longitudinal rail 5, tightening mechanism 7 under the drive of cylinder axis 601 of tightening cylinder 6 longitudinally guide rail 5 move up and down, the drive rod 707 of tightening mechanism 7 is connected with tappet head 8.
As shown in Fig. 7 ~ 14, tappet head 8 has two kinds of structures, the double end stud screwing head 8 ' that the first is used when studs is installed, it two is the nut screwing clamping heads 8 that use when mounting nuts ".Wherein double end stud screwing head 8 ' comprises upper bush 801, studs lower sleeve 802, top thick stick 803, coupling sleeve 804, steel ball 806 and needle roller 807, in described upper bush 801, be formed centrally through hole 811, the diameter of the pore size of through hole 811 and top thick stick 803 matches, the inwall of upper bush 801 is formed with tilting stopper slot 812, and the lower end edge of upper bush 801 is evenly distributed in screw 813;
The cross section of described studs lower sleeve 802 is convex, the aperture of boss portion 814 external diameters and through hole 811 matches, in be formed centrally different diameter hole, epimere is unthreaded hole 815, the diameter of aperture and steel ball 806 matches, and be less than the aperture of through hole 811, the different diameter hole hypomere of studs lower sleeve 802 is screwed hole 816, mate with the diameter of studs 822 in screwed hole 816 apertures, the lower end edge of studs lower sleeve 802 is evenly distributed in lower screw 817, lower screw 817 is through hole, and position and upper screw 813 match;
Described steel ball 806 is placed in the unthreaded hole 815 of lower sleeve 802;
As shown in Fig. 8,11,12, wherein nut screwing clamping head 8 " structure and the structure of double end stud screwing head 8 ' basic identical; only the different diameter hole hypomere at nut lower sleeve 802 ' is inner hexagonal hole 816 ', and mate with the external hexagonal shape of nut 822 ' in inner hexagonal hole 816 ' aperture.
Described control system 12 is INTEL single-chip microcomputer.
Using method of the present utility model:
II. conveyer belt 13 is transported to slender piece 14 before the automatic screwing device of stud bolt an nut, the sensor 11 that is positioned at conveyer belt 13 sends position signalling to control system 12, control system 12 is controlled conveyer belt 13 and is stopped carrying, slender piece 14 stops, and now slender piece 14 positions are located;
III. control system 12 console lifting device cylinder 901 motions, uplifting device 9 is raised up to specified altitude assignment by the slender piece on support claw 10 14 under it drives to be stopped;
IV. control system 12 transmitted signals, motor 3 drives leading screw 2 to rotate, and the travelling nut 201 drive longitudinal rails 5 of leading screw 2 move to initial position on cross slide way 4 to be stopped, and tightening mechanism 7 positions on longitudinal rail 5 are located;
V. control system 12 transmitted signals, tighten cylinder 9 and drive tightening mechanism 7 to move on longitudinal rail 5, tightening mechanism 7 decline designated displacements, the tappet head 8 that now tightening mechanism 7 lower ends connect drops on the studs 822 or nut 822 ' of slender piece 14;
VI. control system 12 transmitted signals, the motor 701 of tightening in tightening mechanism 7 starts, by drive rod 707, drive tappet head 8 to rotate, the studs lower sleeve 802 of tappet head 8 or nut lower sleeve 802 ' coordinate with studs 822 or nut 822 ' on slender piece 14, tighten movement cylinder simultaneously and drive tightening mechanism with the tightening and move down of studs 822 or nut 822 ', studs 822 or nut 822 ' on slender piece 14 are tightened;
VII. when tightening to, studs 822 or nut 822 ' specify after moment of torsion, torque sensor 705 is accepted torque signal and is fed back to control system 12, control system 12 by signal feedback to speed regulator 704, tighten speed governing, when studs 822 or nut 822 ' tighten to required torque, control system 12 controls are tightened motor 702 and are stopped operating, and tighten end;
VIII. after studs 822 or nut 822 ' are tightened, tighten cylinder 6 and drive tightening mechanisms 7 original position that rises back;
Ix. motor 3 drives leading screw 2 rotations, and leading screw 2 drives the tightening mechanism 7 on longitudinal rail 5 to move distance to a declared goal along cross track 4, and this spacing apart from the studs 822 with on slender piece 14 or nut 822 ' is consistent;
X. the action of repeating step V ~ VIII, until tightened last group studs 822 or nut 822 ';
Xi. after studs 822 or nut 822 ' are all tightened, uplifting device 9 falls, and slender piece 14 is fallen on conveyer belt 13, and rundown process finishes.
The utility model carries out tightening of studs, nut by multiple control modes, and device has automatically to be recognized cap, automatic deloading, manual forward and tightens function simultaneously, can realize the forward or reverse of selected axle, and automatically locate, tightens function; Device for screwing up adopts the multiple control modes such as moment of torsion controls, signal feedback to carry out tightening of double-screw bolt or nut, by control, coordinate each axle control unit and realize the coordination that whole system tightens and control; It is control core that advanced INTEL single-chip microcomputer be take in main control unit and axle control unit, adopts modular construction, has guaranteed the reliability of system, the precision of system and antijamming capability, makes it easy to again maintenance and expansion; Adopt high performance servo-drive system, realize stepless speed regulation, can in range ability, arbitrarily set moment of torsion desired value and angle desired value; There is self diagnosis and warning function, can differentiate technological parameter and tighten result, and spoken, light indication; Device can show to add up to be tightened output and tightens result, online with PC, receives and tightens curve, to show and print.The utility model, for the batch studs of regular distribution on slender piece or the automatic tightening of nut, had both guaranteed reliability, precision and the antijamming capability of tightening system, can also improve the uniformity of tightening and tighten efficiency.
Claims (5)
1. the automatic screwing device of a stud bolt an nut, comprise bearing (1), leading screw (2), motor (3), cross slide way (4), longitudinal rail (5), tighten cylinder (6), uplifting device (9), support claw (10), it is characterized in that: described bearing (1) is arc, by arc top (101), arc bottom (102) and platform (103), formed; Arc top (101) is provided with two cross slide waies (4) and the leading screw (2) being parallel to each other, leading screw (2) is positioned between two cross slide waies (4), one end of leading screw (2) connects motor (3), and travelling nut (201) one sides are fixedly connected with longitudinal rail (5) back side; Bottom, arc bottom (102) forms platform (103) to bearing (1) opening one side extension, it is upper that two uplifting device cylinders (901) are installed on respectively platform (103), and two uplifting device guide rails (902) are arranged on the position corresponding with uplifting device (9), arc bottom (102); It is upper that described support claw (10) is fixed on uplifting device (9), the width fit in the upper gap of the width of support claw (10) and conveyer belt (12); Sensor (11) is installed on conveyer belt (12); Longitudinal rail (5) and cross slide way (4) vertical distribution, longitudinal rail (5) back is provided with two transverse shifting slide blocks (402), transverse shifting slide block (402) forms C type with longitudinal rail (5) back, transverse shifting slide block (402) opening part spiral-lock is in the groove (401) of cross slide way (4), the upper end of longitudinal rail (5) is provided with tightens cylinder (6), and the cylinder axis (601) of tightening cylinder (6) is connected with tightening mechanism (7) by connector (602); Tightening mechanism (7) back is provided with two and vertically moves slide block (501), vertically move slide block (501) identical with the combination of cross slide way (4) and transverse shifting slide block (402) with the combination of longitudinal rail (5), the drive rod (707) of tightening mechanism (7) is connected with tappet head (8), control system (12) respectively with motor (3), sensor (11), tighten motor (702) and be connected with the signal of torque sensor control box (706), it is controlled.
2. the automatic screwing device of a kind of stud bolt an nut according to claim 1, it is characterized in that: described tightening mechanism (7) comprises that bottom surface has the casing (701) of two through holes that match with drive rod (707) size, casing (701) inside is provided with that two covers connect respectively successively tightens motor (702), power transmission shaft (703), speed regulator (704) and drive rod (707), be installed on the torque sensor (705) on drive rod (707), and the torque sensor control box (706) being connected with torque sensor (705) other end, the moment of torsion data of set-up of control system are transferred to torque sensor (705) by torque sensor control box (706), further control the torque of drive rod (707).
3. the automatic screwing device of a kind of stud bolt an nut according to claim 1, it is characterized in that: described tappet head (8) is double end stud screwing head (8 '), double end stud screwing head (8 ') comprises upper bush (801), studs lower sleeve (802), top thick stick (803), coupling sleeve (804), steel ball (806) and needle roller (807), in described upper bush (801), be formed centrally through hole (811), the diameter of the pore size of through hole (811) and top thick stick (803) matches, the inwall of upper bush (801) is formed with tilting stopper slot (812), the lower end edge of upper bush (801) is evenly distributed in screw (813), the cross section of described studs lower sleeve (802) is convex, the aperture of boss portion (814) external diameter and through hole (811) matches, in be formed centrally different diameter hole, epimere is unthreaded hole (815), the diameter of aperture and steel ball (806) matches, and be less than the aperture of through hole (811), the different diameter hole hypomere of studs lower sleeve (802) is screwed hole (816), mate with the diameter of studs (822) in screwed hole (816) aperture, the lower end edge of studs lower sleeve (802) is evenly distributed in lower screw (817), lower screw (817) is through hole, position and upper screw (813) match, described steel ball (806) is placed in the unthreaded hole (815) of lower sleeve (802), needle roller (807) is arranged in the needle roller hole (819) on the outer wall of top thick stick (803) lower end, and size matches with stopper slot (812), the upper end of described top thick stick (803) is formed with lower fixed pin holes (818), the lower end of top thick stick (803) is stretched in the through hole (811) of upper bush (801), upper end is stretched in the shoulder hole (820) of coupling sleeve (804), fixing by lower steady pin (809) and coupling sleeve (804), in described coupling sleeve (804), be formed centrally shoulder hole (820), shoulder hole is divided into upper and lower two sections, and the diameter of epimere pore size and drive rod (707) matches, and the diameter of the pore size of hypomere and top thick stick (803) matches, the upper end of coupling sleeve (804) is formed with fixed pin holes (821), and lower end is formed with lower fixed pin holes (818), and both pore sizes match with upper steady pin (808) and lower steady pin (809) size respectively.
4. according to the automatic screwing device of a kind of stud bolt an nut described in claim 1 or 3, it is characterized in that: described tappet head (8) is nut screwing clamping head (8 "); the structure of nut screwing clamping head (8 ") and the structure of double end stud screwing head (8 ') are basic identical, only the different diameter hole hypomere at nut lower sleeve (802 ') is inner hexagonal hole (816 '), and mate with the external hexagonal shape of nut (822 ') in inner hexagonal hole (816 ') aperture.
5. according to the automatic screwing device of a kind of stud bolt an nut described in claim 1 or 3, it is characterized in that: described control system (12) is INTEL single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642283.0U CN203526931U (en) | 2013-10-18 | 2013-10-18 | Device for automatically screwing up double-end stud and nuts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642283.0U CN203526931U (en) | 2013-10-18 | 2013-10-18 | Device for automatically screwing up double-end stud and nuts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203526931U true CN203526931U (en) | 2014-04-09 |
Family
ID=50413193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642283.0U Withdrawn - After Issue CN203526931U (en) | 2013-10-18 | 2013-10-18 | Device for automatically screwing up double-end stud and nuts |
Country Status (1)
| Country | Link |
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| CN (1) | CN203526931U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495860A (en) * | 2013-10-18 | 2014-01-08 | 中核（天津）机械有限公司 | Automatic tightening device for double-end studs and nuts |
| CN104625716A (en) * | 2015-03-06 | 2015-05-20 | 翰桥（湖州）五金制品有限公司 | Equipment for tightly tightening complex automobile parts |
| CN108466359A (en) * | 2018-05-31 | 2018-08-31 | 周兆弟 | One kind tearing nut equipment open |
| CN112692553A (en) * | 2020-12-17 | 2021-04-23 | 内蒙古第一机械集团股份有限公司 | Control system for steel wire thread insert mounting technological parameters |
| CN116833729A (en) * | 2023-08-07 | 2023-10-03 | 江阴市恒润环锻有限公司 | Device and method for quickly screwing fixed-length stud for wind power variable pitch bearing |
-
2013
- 2013-10-18 CN CN201320642283.0U patent/CN203526931U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495860A (en) * | 2013-10-18 | 2014-01-08 | 中核（天津）机械有限公司 | Automatic tightening device for double-end studs and nuts |
| CN103495860B (en) * | 2013-10-18 | 2016-06-08 | 中核（天津）机械有限公司 | The automatic screwing device of double end stud and nut |
| CN104625716A (en) * | 2015-03-06 | 2015-05-20 | 翰桥（湖州）五金制品有限公司 | Equipment for tightly tightening complex automobile parts |
| CN108466359A (en) * | 2018-05-31 | 2018-08-31 | 周兆弟 | One kind tearing nut equipment open |
| CN108466359B (en) * | 2018-05-31 | 2024-04-12 | 周兆弟 | Nut disassembling equipment |
| CN112692553A (en) * | 2020-12-17 | 2021-04-23 | 内蒙古第一机械集团股份有限公司 | Control system for steel wire thread insert mounting technological parameters |
| CN116833729A (en) * | 2023-08-07 | 2023-10-03 | 江阴市恒润环锻有限公司 | Device and method for quickly screwing fixed-length stud for wind power variable pitch bearing |
| CN116833729B (en) * | 2023-08-07 | 2023-11-28 | 江阴市恒润环锻有限公司 | Device and method for quickly screwing fixed-length stud for wind power variable pitch bearing |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20160608 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |