CN204686889U - One is three-freedom mechanical arm under water - Google Patents

One is three-freedom mechanical arm under water Download PDF

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Publication number
CN204686889U
CN204686889U CN201520344420.1U CN201520344420U CN204686889U CN 204686889 U CN204686889 U CN 204686889U CN 201520344420 U CN201520344420 U CN 201520344420U CN 204686889 U CN204686889 U CN 204686889U
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CN
China
Prior art keywords
arm
housing
wrist
screw
reductor
Prior art date
Application number
CN201520344420.1U
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Chinese (zh)
Inventor
庄昀
邓华伟
王艳
李祥辉
吴俊强
肖勇
贾庆伟
Original Assignee
宁波韦尔德斯凯勒智能科技有限公司
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Priority to CN201520344420.1U priority Critical patent/CN204686889U/en
Application granted granted Critical
Publication of CN204686889U publication Critical patent/CN204686889U/en

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Abstract

The utility model relates to underwater robot technical field, in particular to one three-freedom mechanical arm under water, comprise large arm housing, little arm housing, wrist housing, for connect large arm housing and little arm housing pitch control device, for being connected the rotation control device of little arm housing and wrist housing, the paw be installed on folding control device for the folding control device and rotary type that are connected little arm housing and wrist housing; Described large arm housing, little arm housing and wrist housing are cylindrical shell, in the utility model, the housing of each joint arm all adopts columniform profile, enclosure interior space is fully utilized, alleviates integrally-built weight, parts space connection and reasonable arrangement, compact conformation; The convert rotational motion of reducing motor is the rectilinear motion of screw mandrel slide block by screw rod transmission mode, can the accuracy of safety action, and screw rod transmission exports motion to reductor has carried out further deceleration, reduces the requirement to epicyclic gearbox and motor.

Description

One is three-freedom mechanical arm under water
Technical field
The utility model relates to underwater robot technical field, particularly one three-freedom mechanical arm under water.
Background technology
Three-freedom mechanical arm is the power tool of underwater robot when carrying out underwater operation, whole mechanical arm has the elevating movement of forearm, the gyration of wrist and the open and close movement of claw totally 3 frees degree, under water the mechanical arm of multiaxis, greatly mainly with hydraulic system as its power source, mechanical arm system under a kind of seven function water disclosed in China Patent No. 104084947A, comprise paw, wrist, the first joint, second joint, the 3rd joint, the 4th joint, the 5th joint, first joint comprises base, the first hydraulic cylinder, second joint comprises first connecting rod, the second hydraulic cylinder, 3rd joint comprises second connecting rod, the 3rd hydraulic cylinder, 4th joint comprises third connecting rod, the 4th hydraulic cylinder, and the 5th joint comprises double leval jib, the 5th hydraulic cylinder, first hydraulic cylinder is arranged on base, single rod piston of the first hydraulic cylinder is connected with head rod, second hydraulic cylinder is arranged on head rod, single rod piston of the second hydraulic cylinder is connected with the second connecting rod, 3rd hydraulic cylinder is arranged on second connecting rod, 3rd hydraulic cylinder list rod piston is connected with the 3rd connecting rod, 4th hydraulic cylinder is arranged on third connecting rod, single rod piston of the 4th hydraulic cylinder is connected with the 4th connecting rod, 5th hydraulic cylinder is arranged on double leval jib, wrist comprises connector, rotation motor, 5th connecting rod, rotation motor is fixed on the 5th connecting rod, connector is connected with the output of rotation motor, single rod piston of the 5th hydraulic cylinder is connected with the 5th connecting rod, the face that paw is positioned opposite all arranges broached-tooth design.
But hydraulic system is bulky, weight is comparatively large, is difficult to match with middle-size and small-size underwater robot; In addition, numerous as the three-freedom mechanical arm of power source part of having a surplus using hydraulic system, part processing is comparatively complicated, mechanical arm is processed and the cost of maintenance higher.
Utility model content
For the deficiencies in the prior art, the utility model provides one three-freedom mechanical arm under water, and compared to the hydraulic system that submarine mechanical arm is conventional, this mechanical arm adopts leptosomatic DC speed-reducing as power source, each parts are carried out modularized design, convenient for assembly and maintenance; The housing of each joint arm all adopts columniform profile, enclosure interior space is fully utilized, alleviates integrally-built weight, parts space connection and reasonable arrangement, compact conformation; The arrangement of the pitch drive unit be connected with pitch control mechanism can select motor and joint output shaft to be arranged in parallel or motor and joint output shaft are arranged vertically, whole joint outside dimension can be made when being arranged in parallel to become large, increase whole mechanical arm weight, and the water resistance be subject to during manipulator motion can be made to increase; Worm and gear and bevel gear two kinds of kinds of drive can be considered when being arranged vertically, but the moment of torsion exported due to reducing motor is larger, require higher to transmission mechanism, and gear-box relates to sealing problem when being applied under water, this two all kind of drive is also improper, therefore adopt the mode bar of screw rod transmission to be the rectilinear motion of nut by motor convert rotational motion in the utility model, utilize connecting rod to realize the pitching motion of forearm; This kind of kind of drive carries spacing and auto-lock function, can the accuracy of safety action, and screw rod transmission exports motion to reductor has carried out further deceleration, reduces the requirement to epicyclic gearbox and motor.
For solving the problem, the utility model provides following technical scheme:
One is three-freedom mechanical arm under water, comprise large arm housing, little arm housing, wrist housing, for connect large arm housing and little arm housing pitch control device, for being connected the rotation control device of little arm housing and wrist housing, the paw be installed on folding control device for the folding control device and rotary type that are connected little arm housing and wrist housing; Described large arm housing, little arm housing and wrist housing are cylindrical shell.
Further, described pitch control device comprises and is located at pitch drive unit in large arm housing and is located at anterior and the first lead screw transmission mechanism be in transmission connection with pitch drive unit of large arm housing; The front portion of described large arm housing is provided with large arm sealing flange and large arm reductor flange by screw; Described pitch drive unit is by screw and large arm reductor Flange joint; Described first lead screw transmission mechanism is connected with large arm sealing flange by screw.
Further, described pitch drive unit comprises the large arm reductor be provided with in large arm housing, large arm motor and large arm encoder; Described large arm reductor is fixed on large arm reductor flange by screw; The output shaft of described large arm reductor is provided with large arm speed reducer coupling, and large arm speed reducer coupling extends to large arm hull outside through large arm reductor flange and large arm sealing flange successively; Between described large arm sealing flange and big retarding machine shaft coupling, sealing ring is installed.
Further, described first lead screw transmission mechanism comprise be connected with large arm sealing flange by screw the first framework, to be fixed on by screw the first end block group in the first framework, the first screw mandrel be installed in the first end block group, the first screw mandrel slide block be sheathed on the first screw mandrel, rotary type the anchor ear being installed on the first frame front and connect the first connecting rod of the first screw mandrel slide block and anchor ear; The input of described first screw mandrel is connected with large arm speed reducer coupling; Described anchor ear is fixedly connected with little arm housing.
Further, described rotation control device comprises the revolution driver element be located in little arm housing; Described revolution driver element comprises the forearm reductor be provided with in little arm housing, forearm motor and forearm encoder; The front portion of described little arm housing is provided with forearm sealing flange, forearm reductor flange and forearm sleeve by screw; The rear portion of described little arm housing is provided with water-tight electrical connector; Described forearm reductor is fixed on forearm reductor flange by screw; The end of described forearm sleeve is provided with baffle plate; Described forearm sleeve internal clearance is combined with sliding bearing; The rear gap of described wrist housing is matched with in sliding bearing; The rearward end of described wrist housing is one-body molded shaft coupling portion, and baffle plate is run through in shaft coupling portion successively, forearm sealing flange is connected with the output shaft of forearm reductor with forearm reductor flange; Be provided with between described forearm sealing flange and shaft coupling portion and sealing ring is installed.
Further, described folding control device comprises and is provided with folding driver element in wrist housing and is provided with anterior and the second lead screw transmission mechanism be in transmission connection with controller for opening/closing of wrist housing; The front portion of described wrist housing is fixed with wrist sealing flange and wrist reductor flange by screw; Described folding driver element is by screw and wrist reductor Flange joint; Described second lead screw transmission mechanism is connected with wrist sealing flange by screw.
Further, described folding driver element comprises the wrist reductor be located in wrist housing, wrist motor and wrist encoder; Described wrist reductor is fixed on wrist reductor flange by screw; The output shaft of described wrist reductor is provided with wrist speed reducer coupling, and wrist speed reducer coupling extends to wrist hull outside through wrist reductor flange and wrist sealing flange successively; Between described wrist sealing flange and wrist speed reducer coupling, sealing ring is installed.
Further, described second lead screw transmission mechanism comprise be connected with wrist sealing flange by screw the second framework, to be fixed on the second end block group in the second framework, the second screw mandrel be installed in the second end block group by screw, to be sheathed on the second screw mandrel slide block on the second screw mandrel and to connect the second connecting rod of the second screw mandrel slide block and paw.
Beneficial effect: the housing that a kind of three-freedom mechanical arm under water of the present utility model respectively saves arm all adopts columniform profile, enclosure interior space is fully utilized, alleviates integrally-built weight, parts space connection and reasonable arrangement, compact conformation; The convert rotational motion of reducing motor is the rectilinear motion of screw mandrel slide block by screw rod transmission mode, the opening and closing movement utilizing connecting rod to realize the pitching motion of forearm, the revolution action of wrist and hand to grab; This kind of kind of drive carries spacing and auto-lock function, can the accuracy of safety action, and screw rod transmission exports motion to reductor has carried out further deceleration, reduces the requirement to epicyclic gearbox and motor.
Accompanying drawing explanation
Fig. 1 is contour structures schematic diagram of the present utility model;
Fig. 2 is the sectional structure schematic diagram of pitch control device in the utility model;
Fig. 3 is the sectional structure schematic diagram of rotation control device in the utility model;
Fig. 4 is the sectional structure schematic diagram of folding control device in the utility model;
Description of reference numerals: large arm housing 1, large arm sealing flange 11, large arm reductor flange 12, little arm housing 2, forearm sealing flange 21, forearm reductor flange 22, forearm sleeve 23, watertight is electrically connected machine 24, baffle plate 25, sliding bearing 26, wrist housing 3, shaft coupling portion 31, wrist sealing flange 32, wrist reductor flange 33, paw 4, pitch control device 5, large arm reductor 51a, large arm motor 51b, large arm encoder 51c, large arm speed reducer coupling 51d, first framework 52a, first end block group 52b, first screw mandrel 52c, first screw mandrel slide block 52d, first connecting rod 52e, anchor ear 52f, rotation control device 6, forearm reductor 61a, forearm motor 61b, forearm encoder 61c, folding control device 7, wrist reductor 71a, wrist motor 71b, wrist encoder 71c, wrist speed reducer coupling 71d, second framework 72a, second end block group 72b, second screw mandrel 72c, second screw mandrel slide block 72d, second connecting rod 72e.
Specific embodiment
Below in conjunction with Figure of description and embodiment, specific embodiment of the utility model is described in further detail:
With reference to the one shown in Fig. 1 three-freedom mechanical arm under water, comprise large arm housing 1, little arm housing 2, wrist housing 3, for connect large arm housing 1 and little arm housing 2 pitch control device 5, for being connected the rotation control device 6 of little arm housing 2 and wrist housing 3, the paw 4 be installed on folding control device 7 for the folding control device 7 and rotary type that are connected little arm housing 2 and wrist housing 3; Described large arm housing 1, little arm housing 2 and wrist housing 3 are cylindrical shell.
With reference to shown in Fig. 2, described pitch control device 5 comprises the pitch drive unit be located in large arm housing 1 and is located at anterior and the first lead screw transmission mechanism be in transmission connection with pitch drive unit of large arm housing 1; The front portion of described large arm housing 1 is provided with large arm sealing flange 11 and large arm reductor flange 12 by screw; Described pitch drive unit is connected with large arm reductor flange 12 by screw; Described first lead screw transmission mechanism is connected with large arm sealing flange 11 by screw.
Described pitch drive unit comprises and is provided with large arm reductor 51a, large arm motor 51b in large arm housing 1 and large arm encoder 51c; Described large arm reductor 51a is fixed on large arm reductor flange 12 by screw; The output shaft of described large arm reductor 51a is provided with large arm speed reducer coupling 51d, and it is outside that large arm speed reducer coupling 51d extends to large arm housing 1 through large arm reductor flange 12 and large arm sealing flange 11 successively; Between described large arm sealing flange 11 and big retarding machine shaft coupling, sealing ring is installed.
Described first lead screw transmission mechanism comprise be connected with large arm sealing flange 11 by screw the first framework 52a, to be fixed on the first end block group 52b in the first framework 52a, the first screw mandrel 52c be installed on the first end block group 52b, the first screw mandrel slide block 52d be sheathed on the first screw mandrel 52c, being installed on the anchor ear 52f of the first framework 52a front portion and connecting the first connecting rod 52e of the first screw mandrel slide block 52d and anchor ear 52f of rotary type by screw; The input of described first screw mandrel 52c is connected with large arm speed reducer coupling 51d; Described anchor ear 52f is fixedly connected with little arm housing 2.
Wherein, first framework 52a is connected by screw on large arm housing 1, the moment of torsion large arm speed reducer coupling 51d of large arm reductor 51a output shaft passes to the first screw mandrel 52c, change the axial force of the first screw mandrel 52c into, the active force that first screw mandrel slide block 52d overcomes first connecting rod 52e thereupon moves, and promotes anchor ear 52f carry out elevating movement by hinged first connecting rod 52e; First lead screw transmission mechanism is equivalent to carry out further deceleration to the output of large arm reductor 51a, reduces the torque demand of epicyclic gearbox.
With reference to shown in Fig. 3, described rotation control device 6 comprises the revolution driver element be located in little arm housing 2; Described revolution driver element comprises and is provided with forearm reductor 61a, forearm motor 61b in little arm housing 2 and forearm encoder 61c; The front portion of described little arm housing 2 is provided with forearm sealing flange 21, forearm reductor flange 22 and forearm sleeve 23 by screw; The rear portion of described little arm housing 2 is provided with water-tight electrical connector; Described forearm reductor 61a is fixed on forearm reductor flange 22 by screw; The end of described forearm sleeve 23 is provided with baffle plate 25; Described forearm sleeve 23 internal clearance is combined with sliding bearing 26; The rear gap of described wrist housing 3 is matched with in sliding bearing 26; The rearward end of described wrist housing 3 is one-body molded shaft coupling portion 31, and baffle plate 25 is run through in shaft coupling portion 31 successively, forearm sealing flange 21 is connected with the output shaft of forearm reductor flange 22 with forearm reductor 61a; Be provided with between described forearm sealing flange 21 and shaft coupling portion 31 and sealing ring is installed.
Wherein, sliding bearing 26 and forearm sleeve 23 are matched in clearance, the shaft coupling portion 31 at wrist housing 3 rear portion is through sliding bearing 26 endoporus, until the shaft shoulder in shaft coupling portion 31 is close to the end face of flange of sliding bearing 26, baffle plate 25 is with being bolted on wrist housing 3, again forearm sleeve 23 is connected by screw on little arm housing 2, so just limits the axially-movable of wrist housing 3, and bear the moment of flexure of wrist and the generation of claw weight by forearm sleeve 23.
With reference to shown in Fig. 4, described folding control device 7 comprises the folding driver element that is provided with in wrist housing 3 and is provided with anterior and the second lead screw transmission mechanism be in transmission connection with controller for opening/closing of wrist housing 3; The front portion of described wrist housing 3 is fixed with wrist sealing flange 32 and wrist reductor flange 33 by screw; Described folding driver element is connected with wrist reductor flange 33 by screw; Described second screw mandrel 72c transmission mechanism is connected with wrist sealing flange 32 by screw.
Described folding driver element comprises is located at wrist reductor 71a, wrist motor 71b in wrist housing 3 and wrist encoder 71c; Described wrist reductor 71a is fixed on wrist reductor flange 33 by screw; The output shaft of described wrist reductor 71a is provided with wrist speed reducer coupling 71d, and it is outside that wrist speed reducer coupling 71d extends to wrist housing 3 through wrist reductor flange 33 and wrist sealing flange 32 successively; Between described wrist sealing flange 32 and wrist speed reducer coupling 71d, sealing ring is installed.
Described second lead screw transmission mechanism comprise be connected with wrist sealing flange 32 by screw the second framework 72a, to be fixed on the second end block group 72b in the second framework 72a, the second screw mandrel 72c be installed on the second end block group 72b by screw, to be sheathed on the second screw mandrel slide block 72d on the second screw mandrel 72c and to connect the second connecting rod 72e of the second screw mandrel slide block 72d and paw 4.
It is emphasized that described folding control device 7 is identical with the operation principle of pitch control device 5, is all the rectilinear motions of the top shoe by lead screw transmission mechanism, the gyration of speed reducer output shaft being changed into screw mandrel and then realizes corresponding actions by connecting rod.
One shown in complex chart 1 ~ Fig. 4 under water three-freedom mechanical arm utilizes planetary reducing motor as power source, and compact conformation is reliable, and mounting or dismounting are convenient, and action start and stop are level and smooth, are applicable to middle-size and small-size underwater robot; Screw slider mechanism is adopted to replace conventional cone toothing, as the driving member in pitching joint and folding joint, be equivalent to carry out further deceleration to motor, reduce the torque demand of gear-box, and eliminate the gearbox seals problem adopting cone toothing to bring; Rotary joint adopts the mode of sleeve and sliding bearing 26 to support wrist housing 3, reliable and stable when this joint is run.
The above, it is only preferred embodiment of the present utility model, not any restriction is made to technical scope of the present utility model, therefore every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalent variations and modification, all still belong in the scope of the technical solution of the utility model.

Claims (8)

1. a three-freedom mechanical arm under water, is characterized in that: comprise large arm housing (1), little arm housing (2), wrist housing (3), for connect large arm housing (1) and little arm housing (2) pitch control device (5), for being connected the rotation control device (6) of little arm housing (2) and wrist housing (3), the paw (4) be installed on folding control device (7) for the folding control device (7) and rotary type that are connected wrist housing (3) and paw (4); Described large arm housing (1), little arm housing (2) and wrist housing (3) are cylindrical shell.
2. one according to claim 1 three-freedom mechanical arm under water, is characterized in that: described pitch control device (5) comprises to be located at pitch drive unit in large arm housing (1) and to be located at anterior and the first lead screw transmission mechanism be in transmission connection with pitch drive unit of large arm housing (1); The front portion of described large arm housing (1) is provided with large arm sealing flange (11) and large arm reductor flange (12) by screw; Described pitch drive unit is connected with large arm reductor flange (12) by screw; Described first lead screw transmission mechanism is connected with large arm sealing flange (11) by screw.
3. one according to claim 2 three-freedom mechanical arm under water, is characterized in that: described pitch drive unit comprises the large arm reductor (51a) be provided with in large arm housing (1), large arm motor (51b) and large arm encoder (51c); Described large arm reductor (51a) is fixed on large arm reductor flange (12) by screw; The output shaft of described large arm reductor (51a) is provided with large arm speed reducer coupling (51d), and it is outside that large arm speed reducer coupling (51d) extends to large arm housing (1) through large arm reductor flange (12) and large arm sealing flange (11) successively; Between described large arm sealing flange (11) and large arm speed reducer coupling (51d), sealing ring is installed.
4. the three-freedom mechanical arm under water of the one according to Claims 2 or 3, it is characterized in that: described first lead screw transmission mechanism comprises the first framework (52a) be connected with large arm sealing flange (11) by screw, the first end block group (52b) in the first framework (52a) is fixed on by screw, be installed on the first screw mandrel (52c) in the first end block group (52b), be sheathed on the first screw mandrel slide block (52d) on the first screw mandrel (52c), the anchor ear (52f) being installed on the first framework (52a) front portion of rotary type and the first connecting rod (52e) being connected the first screw mandrel slide block (52d) and anchor ear (52f), the input of described first screw mandrel (52c) is connected with large arm speed reducer coupling (51d), described anchor ear (52f) is fixedly connected with little arm housing (2).
5. one according to claim 1 three-freedom mechanical arm under water, is characterized in that: described rotation control device (6) comprises the revolution driver element be located in little arm housing (2); Described revolution driver element comprises the forearm reductor (61a) be provided with in little arm housing (2), forearm motor (61b) and forearm encoder (61c); The front portion of described little arm housing (2) is provided with forearm sealing flange (21), forearm reductor flange (22) and forearm sleeve (23) by screw; The rear portion of described little arm housing (2) is provided with water-tight electrical connector; Described forearm reductor (61a) is fixed on forearm reductor flange (22) by screw; The end of described forearm sleeve (23) is provided with baffle plate (25); Described forearm sleeve (23) internal clearance is combined with sliding bearing (26); The rear gap of described wrist housing (3) is matched with in sliding bearing (26); The rearward end of described wrist housing (3) is one-body molded shaft coupling portion (31), and shaft coupling portion (31) run through baffle plate (25) successively, forearm sealing flange (21) is connected with the output shaft of forearm reductor flange (22) with forearm reductor (61a); Be provided with between described forearm sealing flange (21) and shaft coupling portion (31) and sealing ring is installed.
6. one according to claim 1 three-freedom mechanical arm under water, is characterized in that: described folding control device (7) comprises and is provided with folding driver element in wrist housing (3) and is provided with anterior and the second lead screw transmission mechanism be in transmission connection with controller for opening/closing of wrist housing (3); The front portion of described wrist housing (3) is fixed with wrist sealing flange (32) and wrist reductor flange (33) by screw; Described folding driver element is connected with wrist reductor flange (33) by screw; Described second screw mandrel (72c) transmission mechanism is connected with wrist sealing flange (32) by screw.
7. one according to claim 6 three-freedom mechanical arm under water, is characterized in that: described folding driver element comprises the wrist reductor (71a) be located in wrist housing (3), wrist motor (71b) and wrist encoder (71c); Described wrist reductor (71a) is fixed on wrist reductor flange (33) by screw; The output shaft of described wrist reductor (71a) is provided with wrist speed reducer coupling (71d), and it is outside that wrist speed reducer coupling (71d) extends to wrist housing (3) through wrist reductor flange (33) and wrist sealing flange (32) successively; Between described wrist sealing flange (32) and wrist speed reducer coupling (71d), sealing ring is installed.
8. the three-freedom mechanical arm under water of the one according to claim 6 or 7, it is characterized in that: described second lead screw transmission mechanism comprises the second framework (72a) be connected with wrist sealing flange (32) by screw, the second end block group (72b) in the second framework (72a) is fixed on by screw, be installed on the second screw mandrel (72c) in the second end block group (72b), be sheathed on the second screw mandrel slide block (72d) on the second screw mandrel (72c) and the second connecting rod (72e) being connected the second screw mandrel slide block (72d) and paw (4).
CN201520344420.1U 2015-05-26 2015-05-26 One is three-freedom mechanical arm under water CN204686889U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858891A (en) * 2015-05-26 2015-08-26 宁波韦尔德斯凯勒智能科技有限公司 Underwater three-degree-of-freedom mechanical arm
CN107414796A (en) * 2017-08-17 2017-12-01 柳州福能机器人开发有限公司 Industrial machine arm
CN107433583A (en) * 2017-08-17 2017-12-05 柳州福能机器人开发有限公司 Pinpoint mechanical arm
CN107443361A (en) * 2017-08-17 2017-12-08 柳州福能机器人开发有限公司 Multivariant mechanical arm

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858891A (en) * 2015-05-26 2015-08-26 宁波韦尔德斯凯勒智能科技有限公司 Underwater three-degree-of-freedom mechanical arm
CN104858891B (en) * 2015-05-26 2016-08-24 宁波韦尔德斯凯勒智能科技有限公司 One three-freedom mechanical arm under water
CN107414796A (en) * 2017-08-17 2017-12-01 柳州福能机器人开发有限公司 Industrial machine arm
CN107433583A (en) * 2017-08-17 2017-12-05 柳州福能机器人开发有限公司 Pinpoint mechanical arm
CN107443361A (en) * 2017-08-17 2017-12-08 柳州福能机器人开发有限公司 Multivariant mechanical arm

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Granted publication date: 20151007

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