CN1481975A - Machine for tighten multi-rod screw - Google Patents
Machine for tighten multi-rod screw Download PDFInfo
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- CN1481975A CN1481975A CNA021329249A CN02132924A CN1481975A CN 1481975 A CN1481975 A CN 1481975A CN A021329249 A CNA021329249 A CN A021329249A CN 02132924 A CN02132924 A CN 02132924A CN 1481975 A CN1481975 A CN 1481975A
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- pawl
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Abstract
The multiple-shaft screw fastening machine has several screw fastening heads and motor, the pedestal is mounted on the support disc via small gear shaft with small gear on it, and the fastening motor is mounted in the center of the pedestal and connected to the large gear meshed with the small gear via the fastening main shaft. The reference circle regulating motor with an angle sensor is mounted on the support disc and connected via the rotating shaft with the star claw and on the rotating shaft, there is one brake clutch. On each small gear shaft, there are link rod-sliding block mechanism, sync belt pulley mechanism, screw fastening head and clutch. The screw fastening machine has one driver to drive the fastening heads and alter their positions, and has several functions of rotation in right direction, rotation in reverse direction, moment regulation, speed regulation, etc. and thus wide application, such as in screwing in for various vehicle wheels.
Description
Technical field
The present invention relates to a kind of multiaxis rotary tool, specifically is a kind of machine for setting multi-rod screw.
Background technology
Spiral marking connection is one of most common form of combination between the element part, have the precision height, convenient for assembly, be easy to safeguard, the standardization level advantages of higher, so be one of most economical, most widely used manufacturing means in the modern machines manufacturing.But the inefficacy of spiral marking connection also is machine one of the property sent out fault often, so connecting the research of mechanism, failure cause, the equal double thread in countries in the world pays close attention, constantly develop screw thread on this basis and tighten technology and control method, the microelectric technique of application of advanced and computer technology have produced numerical control bolt screwing machine of new generation.
The bolt screwing machine tool of using in the industrial production still for pneumatic, is electronic secondly mostly at present, and minority is a fro hydraulic driving machinery.Along with microelectric technique and development of computer over nearly two, 30 years, electronic bolt screwing machine and numerical control screwing machine also arise at the historic moment, and progressively move to maturity.Because electric tool control is convenient, noise is little, Torque Control precision height, advantage such as easy to adjust and be subjected to people's favor gradually, and has become fresh combatants in the tightening tool.Single shaft electric tightening machinery is popularized in production assembling and various maintenance department.Comparatively speaking, the technical difficulty of the electronic screwing machine of development multiaxis is bigger, has only a few countries to develop this type of machine at present in the world, and is applied in the assembly process of industries such as automobile, light industry, compressor.All developed electronic machine for setting multi-rod screw, and in automobile industry, be applied as U.S.'s Ingersoll-rand (Ingersoll-Rand) company, German DGD company, Sweden Atlas Copco assembly automation Co., Ltd.But the machine for setting multi-rod screw of above-mentioned use can only be used on a kind of same model spiral shell rifle of position distribution and use, for different model or/and the different many groups bolt in spiral shell rifle position can not carry out operation simultaneously.U.S. Pat 4542576 discloses a kind ofly rotates the tightening machine that changes distribution diameter around a fixed axis respectively by tappet head, the elastic tappet head that is proposed can change the bolt quantity that can tighten, it doesn't matter with the circle distribution that changes tappet head, sees it is to realize two kinds with one group of tappet head radially to switch effect on the whole; Because of the mechanism principle that is subjected to rotate around a fixed axis respectively limits, its tappet head distribution diameter has only conversion within the specific limits, promptly can only be tightened in the bolt in certain distribution diameter scope, be distributed in the distribution angle relative fixed of the bolt on the different circumference, promptly tighten the distribution relation of mechanism and flexible device and fix, elastic tappet head can not change distribution.
Chinese patent (patent No. ZL97115734.0) discloses a kind of machine for setting multi-rod screw, be that two groups of many wrench shafts are set on the pedestal of tightening machine, and on one group of multiaxis wrench shaft, set up a switching device shifter, change the length that wrench shaft stretches out by the operation switching device shifter, make two groups of many wrench shafts carry out operation respectively, can tighten operation the bolt of two kinds of differences (or identical) type and/or the bolt of different distributions.Though this have the bolt screwing machine operation simultaneously of handoff functionality in the different model bolt, solved a tractor serves several purposes problem, improved efficiency of assembling, but owing to structurally be that per two different circumference tappet heads are equipped with a motor, a reductor, a torque sensor, structure more complicated; The reference diameter of tappet head is fixed in addition, thereby makes its application be subjected to certain restriction.
Summary of the invention
In order to overcome above-mentioned deficiency, the purpose of this invention is to provide a kind of machine for setting multi-rod screw that drives and can change the tappet head distributing position by power set.
To achieve these goals, technical scheme of the present invention is: have a plurality of bolt tappet heads, motor, also comprise gear wheel, support, pinion, clutch, synchronous pulley mechanism, connecting rod slider mechanism, angular transducer, brake coupling, gyroaxis, star pawl, support disk, wherein: support is installed together by pinion shaft and support disk, on the described pinion shaft pinion is arranged, tighten motor and be installed in the support center, link to each other described gear wheel and each pinion with gear wheel by being used to drive the main shaft of tightening that tappet head rotates; Reference circle is adjusted motor and is installed on the support disk, link to each other with star-like pawl by gyroaxis, installation one is used to lock the brake coupling of star-like pawl on the gyroaxis, installing connecting rods slide block mechanism and one overlaps synchronous pulley mechanism respectively on described each pinion shaft, the end of connecting rod slider mechanism and synchronous pulley mechanism is the bolt tappet head, one clutch that is used to lock pinion and synchronous pulley mechanism also is installed on the axle of each pinion, and reference circle is adjusted on the motor and also is provided with angular transducer;
Described gyroaxis with tighten spindle axis and overlap; Described connecting rod slider mechanism is made up of connecting rod, slide block, star-like pawl, and two connecting rods are installed between the arm of each pinion shaft and bolt tappet head, and synchronous pulley mechanism is between two connecting rods, and the slide block on connecting rod is fixed on the end of star pawl; Described bolt tappet head quantity equates that with the pinion shaft number pawl number of star-like pawl is corresponding with the number of bolt tappet head, can be at least 2.
Compared with prior art, the present invention has following beneficial effect:
1. simple in structure, easy to use.Because bolt screwing machine of the present invention is driven by power set, and a motor that is used to tighten is promptly only arranged, structure is simple relatively, easily processing; And it is output as a plurality of axles of tightening capable of being combined that are distributed on the circumference, can form 2,3,4,5 or 6 or more, has increased the flexibility of operation, multiple functions such as the present invention just has in addition changes, counter-rotating, moment, speed adjusting.
2. applicability is strong.The present invention adopts connecting rod slider mechanism, installing connecting rods slide block mechanism and one overlaps synchronous pulley mechanism respectively on the axle of described each pinion 5, the end of connecting rod slider mechanism and synchronous pulley mechanism is the bolt tappet head, this structure is compared with tightening machine in the prior art, make the present invention can change the distributing position of tappet head, the reference diameter that is its tappet head can be regulated and set, and regulate and in allowed band, to change continuously, so the present invention has wide range of applications, tighten as the bolt that can apply to different tonnage wheels.Because end-of-arm tooling of the present invention is replaceable, when loading onto screw tap or drill bit at output, also can be used for carrying out operations such as tapping or boring.
Description of drawings
Fig. 1 is a structural front view of the present invention.
Fig. 2 is the right view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment
As Fig. 1, shown in 2, the present invention has a plurality of bolt tappet heads 7, tighten motor 4 for one, also comprise gear wheel 1, support 2, pinion 5, clutch 6, synchronous pulley mechanism 8, connecting rod slider mechanism, angular transducer 13, brake coupling 14, gyroaxis 15, star pawl 16, support disk 17, wherein: support 2 is installed together by pinion shaft 11 and support disk 17, on the described pinion shaft 11 pinion 5 is arranged, tighten motor 4 and be installed in support 2 centers, link to each other with gear wheel 1 by being used to drive the main shaft 3 of tightening that tappet head 7 rotates, described gear wheel 1 meshes with each pinion 5; Reference circle is adjusted motor 12 and is installed on the support disk 17, link to each other with star-like pawl 16 by gyroaxis 15, installation one is used to lock the brake coupling 14 of star-like pawl 16 on the gyroaxis 15, installing connecting rods slide block mechanism and one overlaps synchronous pulley mechanism 8 respectively on described each pinion shaft 11, the end of connecting rod slider mechanism and synchronous pulley mechanism 8 is a bolt tappet head 7, at the axle of each pinion 5 clutch 6 that is used to lock pinion 5 and synchronous pulley mechanism 8 also is installed on 11, clutch 6 can be controlled the screw-down torque output of tightening motor 4 or stop to output on the tappet head 7; Reference circle is adjusted on the motor 12 and also is provided with angular transducer 13;
Described connecting rod slider mechanism is made up of connecting rod 9, slide block 10, star-like pawl 16, two connecting rods 9 are installed between the arm of each pinion shaft 11 and bolt tappet head 7, synchronous pulley mechanism 8 is between two connecting rods 9, and the slide block 10 on connecting rod 9 is fixed on the end of star pawl 16;
Described gyroaxis 15 with tighten main shaft 3 axis coincidings; Be used for the drive motors that a plurality of bolts tighten simultaneously and have only one, promptly tighten motor 4; Described bolt tappet head 7 quantity equate that with pinion shaft 11 numbers the pawl number of star-like pawl 16 is corresponding with the number of bolt tappet head 7, can be at least 2.
The course of work of the present invention and principle are as follows:
6 pinions 5 are installed on support disk 17, and (quantity of pinion 5 is decided according to the quantity of bolt tappet head 7, as can being 2,3,4 or 5, present embodiment is 6), these pinions 5 rotate with gear wheel 1 engagement respectively, a difference installing connecting rods slide block mechanism and a cover synchronous pulley mechanism 8 on each pinion shaft 11, slide block 10 slides along connecting rod 9, and the end of connecting rod slider mechanism is a bolt tappet head 7; Tighten the driving of motor 4 output torques and tighten main shaft 3 and gear wheel 1 rotation, drive the synchronous band rotation that pinion 5 drives synchronous pulley mechanism 8, drive bolt tappet head 7 at last and tight a bolt, realized that a plurality of bolt tappet heads 7 tighten motor 4 by one and drive and finish the requirement that a plurality of bolts are tightened.
At the opposite side of support disk 17 gyroaxis 15 is installed, this gyroaxis 15 with tighten main shaft 3 axis coincidings.A star-like pawl 16 is installed on gyroaxis 15, and a brake coupling 14 that is used to lock star-like pawl 16, star-like pawl 16 wraparound rotating shafts 15 are rotated; The end of star-like pawl 16 is connected with slide block 10 on the respective link 9 respectively; The pawl number of star-like pawl 16 is corresponding with the number of bolt tappet head 7, and present embodiment is 6 pawls (also can be 2,3,4 or 5 pawls or more, as long as distribution occasion allows).On support disk 17, install one and can drive the adjustment motor 12 that star-like pawl 16 rotates, and the angular transducer 13 that can measure star-like pawl 16 rotational angles; The clutch of on each pinion shaft 11, being installed 6 that is used to lock pinion 5 and synchronous pulley mechanism 8, when clutch 6 unclamps, 8 idle running of synchronous pulley mechanism; Rotate and adjust angle of star-like pawl 16 rotations of motor 12 adjustings, star-like pawl 16 drives slide block 10 and slides along connecting rod 9,9 swings of slide block 10 drivening rods, the result of connecting rod 9 swings has changed the position of connecting rod 9 distal points (being bolt tappet head 7 centers), and the result of motion has changed the size of bolt tappet head 7 reference diameters; After adjusting to desired diameter, use brake coupling 14 with its locking, thereby realized the requirement that same tightening machine can be tightened the tire bolt of different-diameter size.
Claims (4)
1. machine for setting multi-rod screw, have a plurality of bolt tappet heads (7), motor, it is characterized in that: also comprise gear wheel (1), support (2), pinion (5), clutch (6), synchronous pulley mechanism (8), connecting rod slider mechanism, angular transducer (13), brake coupling (14), gyroaxis (15), star pawl (16), support disk (17), wherein: support (2) is installed together by pinion shaft (11) and support disk (17), pinion (5) is arranged on the described pinion shaft (11), tighten motor (4) and be installed in support (2) center, link to each other with gear wheel (1) by being used to drive the main shaft (3) of tightening that tappet head (7) rotates, described gear wheel (1) and each pinion (5) mesh; Reference circle is adjusted motor (12) and is installed on the support disk (17), link to each other with star-like pawl (16) by gyroaxis (15), gyroaxis (15) is gone up the brake coupling (14) that installation one is used to lock star-like pawl (16), go up an installing connecting rods slide block mechanism and a cover synchronous pulley mechanism (8) respectively at described each pinion shaft (11), the end of connecting rod slider mechanism and synchronous pulley mechanism (8) is bolt tappet head (7), at the axle of each pinion (5) clutch (6) that is used to lock pinion (5) and synchronous pulley mechanism (8) also is installed on (11), also is provided with angular transducer (13) on the reference circle adjustment motor (12).
2. according to the described machine for setting multi-rod screw of claim 1, it is characterized in that: described gyroaxis (15) with tighten main shaft (3) axis coinciding.
3. according to the described machine for setting multi-rod screw of claim 1, it is characterized in that: described connecting rod slider mechanism is made up of connecting rod (9), slide block (10), star-like pawl (16), two connecting rods (9) are installed between the arm of each pinion shaft (11) and bolt tappet head (7), synchronous pulley mechanism (8) is positioned between two connecting rods (9), and the slide block (10) on the connecting rod (9) is fixed on the end of star pawl (16).
4. according to the described machine for setting multi-rod screw of claim 1, it is characterized in that: described bolt tappet head (7) quantity equates that with pinion shaft (11) number the pawl number of star-like pawl (16) is corresponding with the number of bolt tappet head (7), can be at least 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02132924 CN1232384C (en) | 2002-09-13 | 2002-09-13 | Machine for tighten multi-rod screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02132924 CN1232384C (en) | 2002-09-13 | 2002-09-13 | Machine for tighten multi-rod screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1481975A true CN1481975A (en) | 2004-03-17 |
| CN1232384C CN1232384C (en) | 2005-12-21 |
Family
ID=34145374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02132924 Expired - Fee Related CN1232384C (en) | 2002-09-13 | 2002-09-13 | Machine for tighten multi-rod screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1232384C (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360275C (en) * | 2004-12-14 | 2008-01-09 | 合肥工业大学 | Diameter regulating mechanism for tightening shaft distribution circle of multiple-shaft tightening machine |
| CN100360282C (en) * | 2005-05-26 | 2008-01-09 | 合肥工业大学 | Automatic aligning mechanism of screw thread tightening machine and aligning method thereof |
| CN101982293A (en) * | 2010-10-21 | 2011-03-02 | 富美科技有限公司 | Automatic removing equipment for screws on Se drum end cover |
| CN101786228B (en) * | 2010-01-29 | 2011-08-10 | 奇瑞汽车股份有限公司 | Adjustable iso-torque wheel-fastening device and control method thereof |
| CN101722417B (en) * | 2010-02-23 | 2011-11-30 | 三一电气有限责任公司 | Bolt screwing machine |
| CN101745802B (en) * | 2008-12-10 | 2012-02-15 | 中国科学院沈阳自动化研究所 | Torque-control multishaft bolt tightening machine |
| CN101628403B (en) * | 2009-08-13 | 2012-03-28 | 中船重工(重庆)海装风电设备有限公司 | Synchronous tightening tool of expanded coupling sleeve |
| CN102451994A (en) * | 2010-10-25 | 2012-05-16 | 大连德新机电技术工程有限公司 | Twin-shaft pitch electric bolt screwing machine |
| CN102513818A (en) * | 2011-12-08 | 2012-06-27 | 中国人民解放军空军工程大学 | Adjustable multishaft screwing mechanism |
| CN101898299B (en) * | 2009-05-27 | 2012-07-04 | 李圣用 | Synchronous screwing device of connecting bolt of expanded ring of spindle and installation method thereof |
| CN103662149A (en) * | 2012-08-31 | 2014-03-26 | 昆山市佰奥自动化设备科技有限公司 | Air cylinder adjusting structure of clamping jaw device for wire binding machine |
| CN103846669A (en) * | 2012-12-07 | 2014-06-11 | 哈尔滨恒誉名翔科技有限公司 | Device for tightening and assembling circular nut on output shaft of planetary gearbox and testing torque |
| CN104493785A (en) * | 2014-11-28 | 2015-04-08 | 常熟理工学院 | Synchronous quick dismantling tool for bolts |
| CN104924063A (en) * | 2015-07-03 | 2015-09-23 | 西南石油大学 | Rapid flange connector |
| CN105345713A (en) * | 2015-12-12 | 2016-02-24 | 国网山东夏津县供电公司 | Electric meter box input circuit nut fixator |
| CN105729101A (en) * | 2016-04-23 | 2016-07-06 | 广州嘉能自动化设备有限公司 | Device and method for automatically debugging plate type brake of tractor, and mounting unit |
| CN107350792A (en) * | 2017-09-20 | 2017-11-17 | 四川长虹智能制造技术有限公司 | A kind of Full-automatic screw locking machine of easily switched suction |
| CN108555584A (en) * | 2018-05-14 | 2018-09-21 | 沈阳工业大学 | A kind of circumferential movement tightens bolt robot |
| CN108858059A (en) * | 2018-08-31 | 2018-11-23 | 苏州托克斯冲压设备有限公司 | Transmission shaft flange clamp device |
| CN109807613A (en) * | 2019-03-13 | 2019-05-28 | 中国铁建重工集团有限公司 | A kind of mobile positioning tightening device |
| CN110509043A (en) * | 2019-09-03 | 2019-11-29 | 上海发那科机器人有限公司 | A kind of robot is servo-actuated the installation tightening system and method for automobile main tire |
| CN112171256A (en) * | 2020-10-19 | 2021-01-05 | 上海核工程研究设计院有限公司 | Multi-working-head synchronous bolt insertion machine for reactor pressure vessel |
| CN113059220A (en) * | 2021-05-19 | 2021-07-02 | 李淑杰 | Intelligent industrial manufacturing system |
| CN115008171A (en) * | 2022-04-21 | 2022-09-06 | 国网湖南省电力有限公司 | Self-adaptive bolt tightening tool |
| CN115026560A (en) * | 2022-06-28 | 2022-09-09 | 新疆农业大学 | Tire screw tightening machine suitable for multi-vehicle-type production and using method thereof |
-
2002
- 2002-09-13 CN CN 02132924 patent/CN1232384C/en not_active Expired - Fee Related
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360275C (en) * | 2004-12-14 | 2008-01-09 | 合肥工业大学 | Diameter regulating mechanism for tightening shaft distribution circle of multiple-shaft tightening machine |
| CN100360282C (en) * | 2005-05-26 | 2008-01-09 | 合肥工业大学 | Automatic aligning mechanism of screw thread tightening machine and aligning method thereof |
| CN101745802B (en) * | 2008-12-10 | 2012-02-15 | 中国科学院沈阳自动化研究所 | Torque-control multishaft bolt tightening machine |
| CN101898299B (en) * | 2009-05-27 | 2012-07-04 | 李圣用 | Synchronous screwing device of connecting bolt of expanded ring of spindle and installation method thereof |
| CN101628403B (en) * | 2009-08-13 | 2012-03-28 | 中船重工(重庆)海装风电设备有限公司 | Synchronous tightening tool of expanded coupling sleeve |
| CN101786228B (en) * | 2010-01-29 | 2011-08-10 | 奇瑞汽车股份有限公司 | Adjustable iso-torque wheel-fastening device and control method thereof |
| CN101722417B (en) * | 2010-02-23 | 2011-11-30 | 三一电气有限责任公司 | Bolt screwing machine |
| CN101982293A (en) * | 2010-10-21 | 2011-03-02 | 富美科技有限公司 | Automatic removing equipment for screws on Se drum end cover |
| CN102451994B (en) * | 2010-10-25 | 2013-08-14 | 大连德新机电技术工程有限公司 | Twin-shaft pitch electric bolt screwing machine |
| CN102451994A (en) * | 2010-10-25 | 2012-05-16 | 大连德新机电技术工程有限公司 | Twin-shaft pitch electric bolt screwing machine |
| CN102513818A (en) * | 2011-12-08 | 2012-06-27 | 中国人民解放军空军工程大学 | Adjustable multishaft screwing mechanism |
| CN103662149A (en) * | 2012-08-31 | 2014-03-26 | 昆山市佰奥自动化设备科技有限公司 | Air cylinder adjusting structure of clamping jaw device for wire binding machine |
| CN103846669A (en) * | 2012-12-07 | 2014-06-11 | 哈尔滨恒誉名翔科技有限公司 | Device for tightening and assembling circular nut on output shaft of planetary gearbox and testing torque |
| CN103846669B (en) * | 2012-12-07 | 2017-09-26 | 哈尔滨恒誉名翔科技有限公司 | A kind of epicyclic gearbox output shaft round nut tightens assembling and moment measuring device |
| CN104493785A (en) * | 2014-11-28 | 2015-04-08 | 常熟理工学院 | Synchronous quick dismantling tool for bolts |
| CN104493785B (en) * | 2014-11-28 | 2016-02-17 | 常熟理工学院 | Bolt synchronous Quick disassembling tool |
| CN104924063A (en) * | 2015-07-03 | 2015-09-23 | 西南石油大学 | Rapid flange connector |
| CN105345713A (en) * | 2015-12-12 | 2016-02-24 | 国网山东夏津县供电公司 | Electric meter box input circuit nut fixator |
| CN105729101B (en) * | 2016-04-23 | 2018-02-06 | 广州嘉能自动化设备有限公司 | The automatic debugging device and adjustment method and installation unit of the board-like brake of traction machine |
| CN105729101A (en) * | 2016-04-23 | 2016-07-06 | 广州嘉能自动化设备有限公司 | Device and method for automatically debugging plate type brake of tractor, and mounting unit |
| CN107350792A (en) * | 2017-09-20 | 2017-11-17 | 四川长虹智能制造技术有限公司 | A kind of Full-automatic screw locking machine of easily switched suction |
| CN108555584B (en) * | 2018-05-14 | 2023-09-26 | 沈阳工业大学 | Circumferential movement screw bolt tightening robot |
| CN108555584A (en) * | 2018-05-14 | 2018-09-21 | 沈阳工业大学 | A kind of circumferential movement tightens bolt robot |
| CN108858059A (en) * | 2018-08-31 | 2018-11-23 | 苏州托克斯冲压设备有限公司 | Transmission shaft flange clamp device |
| CN108858059B (en) * | 2018-08-31 | 2023-12-26 | 苏州托克斯冲压设备有限公司 | Transmission shaft flange fastening device |
| CN109807613A (en) * | 2019-03-13 | 2019-05-28 | 中国铁建重工集团有限公司 | A kind of mobile positioning tightening device |
| CN110509043A (en) * | 2019-09-03 | 2019-11-29 | 上海发那科机器人有限公司 | A kind of robot is servo-actuated the installation tightening system and method for automobile main tire |
| CN112171256A (en) * | 2020-10-19 | 2021-01-05 | 上海核工程研究设计院有限公司 | Multi-working-head synchronous bolt insertion machine for reactor pressure vessel |
| CN113059220B (en) * | 2021-05-19 | 2022-05-24 | 潍坊恩源信息科技有限公司 | Intelligent industrial manufacturing system |
| CN113059220A (en) * | 2021-05-19 | 2021-07-02 | 李淑杰 | Intelligent industrial manufacturing system |
| CN115008171A (en) * | 2022-04-21 | 2022-09-06 | 国网湖南省电力有限公司 | Self-adaptive bolt tightening tool |
| CN115008171B (en) * | 2022-04-21 | 2023-09-15 | 国网湖南省电力有限公司 | Self-adaptive bolt tightening tool |
| CN115026560A (en) * | 2022-06-28 | 2022-09-09 | 新疆农业大学 | Tire screw tightening machine suitable for multi-vehicle-type production and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1232384C (en) | 2005-12-21 |
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