CN104608111B - The controlled mobile manipulator mechanical arm of four-degree-of-freedom nine connecting rod that a kind of Tape movement is secondary - Google Patents
The controlled mobile manipulator mechanical arm of four-degree-of-freedom nine connecting rod that a kind of Tape movement is secondary Download PDFInfo
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Abstract
一种带移动副的四自由度九连杆可控移动操作机械臂，该机械臂的第一摆动连杆下端连接在回转平台上上端与三角连接板的第一端连接；第二摆动连杆下端连接在小车上上端与三角连接板的第二端连接；第二抬升连杆一端与三角连接板第三端连接另一端与抓手连接板连接；第一抬升连杆一端连接在三角连接板中心另一端与抓手连接板连接；第一主动杆下端连接在回转平台上上端与第一连杆一端连接另一端连接在第一摆动杆上；第二主动杆下端连接在回转平台上上端与第二连杆一端连接，第二连杆另一端连接在滑动套筒上，第三连杆一端连接在滑动套筒上另一端连接在第一抬升连杆上。本发明克服了刚性差惯量大、关节误差容易积累、反应不灵敏等缺点，工作效率和稳定性高。
A four-degree-of-freedom nine-link controllable mobile operation mechanical arm with a moving pair, the lower end of the first swing link of the mechanical arm is connected to the upper end of the rotary platform and the first end of the triangular connecting plate; the second swing link The lower end is connected to the trolley and the upper end is connected to the second end of the triangular connecting plate; one end of the second lifting link is connected to the third end of the triangular connecting plate and the other end is connected to the gripper connecting plate; one end of the first lifting connecting rod is connected to the triangular connecting plate The other end of the center is connected to the gripper connecting plate; the lower end of the first active rod is connected to the upper end of the slewing platform; the upper end is connected to one end of the first connecting rod and the other end is connected to the first swinging rod; One end of the second connecting rod is connected, the other end of the second connecting rod is connected on the sliding sleeve, and one end of the third connecting rod is connected on the sliding sleeve and the other end is connected on the first lifting connecting rod. The invention overcomes the disadvantages of poor rigidity, large inertia, easy accumulation of joint errors, insensitive response, etc., and has high working efficiency and stability.
Description
技术领域technical field
本发明属于移动操作机械臂领域，特别是一种带移动副的四自由度九连杆可控移动操作机械臂。The invention belongs to the field of mobile operation manipulators, in particular to a four-degree-of-freedom nine-link controllable mobile operation manipulator with a moving pair.
背景技术Background technique
自上世纪60年代以来，机械臂开始广泛用于加工物流行业，不仅减轻了人们的工作强度，并且极大的提升了加工生产效率。但这些机械臂绝大部分是固定在基座上，随着工业和科技的发展，这种安装在固定基座的机械臂的工作空间极其有限，不能满足实际任务需要。针对这种情况，自上世纪80年末期代以来，国内外许多研究机构开展了对移动机械臂的研究。移动机械臂主要由行走装置、机械臂和抓取装置构成，在继承了传统机械臂优点的基础上，又扩大了机械臂的工作空间，使其应用范围更广，能满足更多实际工作的需要。如今，为移动平台安装机械臂或者说为机械臂提供移动基座是机械臂发展的必然趋势和重要发展方向。Since the 1960s, robotic arms have been widely used in the processing and logistics industry, which not only reduces the work intensity of people, but also greatly improves the processing and production efficiency. However, most of these mechanical arms are fixed on the base. With the development of industry and technology, the working space of this mechanical arm installed on the fixed base is extremely limited, which cannot meet the needs of actual tasks. In response to this situation, since the late 1980s, many research institutions at home and abroad have carried out research on mobile manipulators. The mobile manipulator is mainly composed of a walking device, a manipulator and a grabbing device. On the basis of inheriting the advantages of the traditional manipulator, the working space of the manipulator is expanded, so that its application range is wider and it can meet the needs of more practical work. need. Nowadays, installing a robotic arm for a mobile platform or providing a mobile base for a robotic arm is an inevitable trend and an important development direction for the development of a robotic arm.
现有的移动操作机械臂是将电机安装在机械臂的各个关节上，这种机械臂的缺点有：刚性差、转动量大，反应不灵敏，易产生残余振动，而且关节误差容易积累，而本发明中的移动操作机械臂采用就连杆传动，可将全部电机安装在小车上，并且用三个电机相互配合就可以实现对机械臂进行控制，克服了现有的移动机械臂的缺点，而且具有操作方便灵活，结构简单，成本低廉等优点。The existing mobile operation manipulator is to install the motor on each joint of the manipulator. The disadvantages of this manipulator are: poor rigidity, large amount of rotation, insensitive response, easy to generate residual vibration, and easy accumulation of joint errors, while The mobile operation manipulator in the present invention adopts connecting rod transmission, all the motors can be installed on the trolley, and the three motors cooperate with each other to realize the control of the manipulator, which overcomes the shortcomings of the existing mobile manipulator, Moreover, it has the advantages of convenient and flexible operation, simple structure, low cost and the like.
发明内容Contents of the invention
本发明的目的在于提供一种带移动副的四自由度九连杆可控移动操作机械臂，本发明将对现有的移动操作机械臂进行了改进，将电机安装在小车上，并且采用了多连杆设计，克服了现有的移动操作机械臂性差、转动量大，反应不灵敏，易产生残余振动，而且关节误差容易积累等缺点。本发明还加入了滑动副，通过连杆传动，只需用一台伺服电机即可实现单独对机械手进行升降控制，保证了升降过程的稳定性，提高了工作效率。The purpose of the present invention is to provide a four-degree-of-freedom nine-link controllable mobile operation mechanical arm with a moving pair. The present invention will improve the existing mobile operation mechanical arm, install the motor on the trolley, and adopt The multi-link design overcomes the shortcomings of the existing mobile operation manipulators, such as poor performance, large amount of rotation, insensitive response, easy generation of residual vibration, and easy accumulation of joint errors. The invention also adds a sliding pair, through the transmission of the connecting rod, only one servo motor can be used to realize the lifting control of the manipulator alone, which ensures the stability of the lifting process and improves the working efficiency.
本发明通过以下技术方案实现以上功能：The present invention realizes the above functions through the following technical solutions:
一种带移动副的四自由度九连杆可控移动操作机械臂，包括第一摆动连杆、回转平台、三角连接板、第二摆动连杆、第二抬升连杆、抓手连接板、第一抬升连杆、机械抓手、第一主动杆、第一连杆、第二主动杆、第二连杆、滑动套筒、第三连杆以及小车；A four-degree-of-freedom nine-link controllable mobile operation manipulator with a moving pair, including a first swing link, a rotary platform, a triangular connection plate, a second swing link, a second lift link, a gripper connection plate, The first lifting link, the mechanical gripper, the first driving rod, the first connecting rod, the second driving rod, the second connecting rod, the sliding sleeve, the third connecting rod and the trolley;
所述第一摆动连杆下端通过第三转动副连接在回转平台上，第一摆动连杆上端通过第十转动副与三角连接板的第一端连接；所述第二摆动连杆下端通过第四转动副连接在小车上，第二摆动连杆上端通过第九转动副与三角连接板的第二端连接；所述第二抬升连杆一端通过第十二转动副与三角连接板第三端连接，第二抬升连杆另一端通过第十四转动副与抓手连接板连接；所述第一抬升连杆一端通过第十一转动副连接在三角连接板中心，第一抬升连杆另一端通过第十三转动副与抓手连接板连接；所述机械抓手通过插销连接安装在抓手连接板上；The lower end of the first swing connecting rod is connected to the slewing platform through the third rotating pair, the upper end of the first swing connecting rod is connected with the first end of the triangular connecting plate through the tenth rotating pair; the lower end of the second swing connecting rod is connected through the first The four rotating pairs are connected to the trolley, the upper end of the second swing link is connected to the second end of the triangular connecting plate through the ninth rotating pair; one end of the second lifting connecting rod is connected to the third end of the triangular connecting plate through the twelfth rotating pair The other end of the second lifting link is connected to the gripper connecting plate through the fourteenth turning pair; one end of the first lifting connecting rod is connected to the center of the triangular connecting plate through the eleventh turning pair, and the other end of the first lifting connecting rod The thirteenth revolving pair is connected to the gripper connecting plate; the mechanical gripper is installed on the gripper connecting plate through a bolt connection;
所述第一主动杆下端通过第一转动副连接在回转平台上，第一主动杆上端通过第五转动副与第一连杆一端连接，第一连杆另一端通过第六转动副连接在第一摆动杆上；The lower end of the first active rod is connected to the slewing platform through the first rotating pair, the upper end of the first active rod is connected to one end of the first connecting rod through the fifth rotating pair, and the other end of the first connecting rod is connected to the second end through the sixth rotating pair. on a swing bar;
所述第二主动杆下端通过第二转动副连接在回转平台上，第二主动杆上端通过第七转动副与第二连杆一端连接，第二连杆另一端通过第八转动副连接在滑动套筒上，所述滑动套筒通过移动副套装在第二连杆上，所述第三连杆一端通过第十五转动副连接在滑动套筒上，第三连杆另一端通过第十六转动副连接在第一抬升连杆上；The lower end of the second active rod is connected to the slewing platform through the second rotating pair, the upper end of the second active rod is connected to one end of the second connecting rod through the seventh rotating pair, and the other end of the second connecting rod is connected to the sliding platform through the eighth rotating pair. On the sleeve, the sliding sleeve is set on the second connecting rod through the moving pair, one end of the third connecting rod is connected to the sliding sleeve through the fifteenth rotating pair, and the other end of the third connecting rod is connected through the sixteenth rotating pair. The rotary pair is connected to the first lifting link;
所述回转平台通过第二十转动副安装在小车上。The slewing platform is installed on the trolley through the twentieth revolving pair.
本发明突出优点在于：The outstanding advantages of the present invention are:
1、本发明将电机安装在小车上，克服了现有的移动操作机械臂将电机安装在关节上，所产生的刚性差、转动量大，反应不灵敏，易产生残余振动，关节误差容易积累等缺点，而且具有操作方便灵活，结构简单，成本低廉等优点。1. The present invention installs the motor on the trolley, which overcomes the problem of poor rigidity, large amount of rotation, insensitive response, easy generation of residual vibration, and easy accumulation of joint errors when the motor is installed on the joints of the existing mobile operation manipulator And other disadvantages, but also has the advantages of convenient and flexible operation, simple structure, low cost and so on.
2、本发明采用了滑动套筒，通过连杆传动，只需用一台伺服电机即可实现单独对机械手进行升降控制，保证了升降过程的稳定性，提高了工作效率。2. The present invention adopts the sliding sleeve, and through the transmission of the connecting rod, only one servo motor can be used to realize the lifting control of the manipulator alone, which ensures the stability of the lifting process and improves the work efficiency.
附图说明Description of drawings
图1为本发明所述带移动副四自由度九连杆可控移动操作机械臂作机械臂的连杆示意图。Fig. 1 is a schematic diagram of the connecting rod of the controllable mobile operation mechanical arm with four degrees of freedom and nine connecting rods in the present invention as a mechanical arm.
图2为本发明所述带移动副四自由度九连杆可控移动操作机械臂作机械臂的转动副示意图。Fig. 2 is a schematic diagram of the revolving pair of the manipulator with a four-degree-of-freedom nine-link controllable mobile operation manipulator as a manipulator according to the present invention.
图3为本发明所述带移动副四自由度九连杆可控移动操作机械臂作机械臂的工作示意图。Fig. 3 is a working schematic diagram of the controllable mobile operation manipulator with four degrees of freedom and nine linkages with a moving pair as a manipulator in the present invention.
具体实施方式detailed description
以下通过附图和实施例对本发明的技术方案作进一步说明。The technical solutions of the present invention will be further described below through the accompanying drawings and embodiments.
一种带移动副的四自由度九连杆可控移动操作机械臂，包括第一摆动连杆6、回转平台34、三角连接板10、第二摆动连杆7、第二抬升连杆11、抓手连接板13、第一抬升连杆12、机械抓手14、第一主动杆2、第一连杆3、第二主动杆4、第二连杆5、滑动套筒8、第三连杆9以及小车1；A four-degree-of-freedom nine-link controllable mobile operation manipulator with a moving pair, including a first swing link 6, a rotary platform 34, a triangular connection plate 10, a second swing link 7, a second lift link 11, Gripper connecting plate 13, first lifting connecting rod 12, mechanical gripper 14, first driving rod 2, first connecting rod 3, second driving rod 4, second connecting rod 5, sliding sleeve 8, third connecting rod rod 9 and trolley 1;
所述第一摆动连杆6下端通过第三转动副19连接在回转平台2上，第一摆动连杆6上端通过第十转动副24与三角连接板10的第一端连接；所述第二摆动连杆7下端通过第四转动副15连接在小车上1，第二摆动连杆7上端通过第九转动副27与三角连接板10的第二端连接；所述第二抬升连杆11一端通过第十二转动副26与三角连接板10第三端连接，第二抬升连杆11另一端通过第十四转动副30与抓手连接板13连接；所述第一抬升连杆12一端通过第十一转动副25连接在三角连接板10中心，第一抬升连杆12另一端通过第十三转动副29与抓手连接板13连接；所述机械抓手14通过插销32连接安装在抓手连接板13上；The lower end of the first swing connecting rod 6 is connected to the slewing platform 2 through the third rotating pair 19, and the upper end of the first swing connecting rod 6 is connected to the first end of the triangular connecting plate 10 through the tenth rotating pair 24; The lower end of the swing connecting rod 7 is connected to the trolley 1 through the fourth rotating pair 15, and the upper end of the second swing connecting rod 7 is connected to the second end of the triangular connecting plate 10 through the ninth rotating pair 27; one end of the second lifting connecting rod 11 The third end of the triangular connecting plate 10 is connected through the twelfth rotating pair 26, and the other end of the second lifting connecting rod 11 is connected with the handle connecting plate 13 through the fourteenth rotating pair 30; one end of the first lifting connecting rod 12 passes through The eleventh rotating pair 25 is connected to the center of the triangular connecting plate 10, and the other end of the first lifting link 12 is connected to the handle connecting plate 13 through the thirteenth rotating pair 29; On the hand connecting plate 13;
所述第一主动杆2下端通过第一转动副16连接在回转平台2上，第一主动杆2上端通过第五转动副17与第一连杆3一端连接，第一连杆3另一端通过第六转动副18连接在第一摆动杆6上；The lower end of the first active rod 2 is connected to the rotary platform 2 through the first rotating pair 16, the upper end of the first active rod 2 is connected to one end of the first connecting rod 3 through the fifth rotating pair 17, and the other end of the first connecting rod 3 is passed through The sixth rotary pair 18 is connected to the first swing rod 6;
所述第二主动杆4下端通过第二转动副20连接在回转平台2上，第二主动杆4上端通过第七转动副21与第二连杆5一端连接，第二连杆5另一端通过第八转动副22连接在滑动套筒8上，所述滑动套筒8通过移动副31套装在第二连杆5上，所述第三连杆9一端通过第十五转动副23连接在滑动套筒8上，第三连杆9另一端通过第十六转动副28连接在第一抬升连杆12上；The lower end of the second active rod 4 is connected to the rotary platform 2 through the second rotating pair 20, the upper end of the second active rod 4 is connected to one end of the second connecting rod 5 through the seventh rotating pair 21, and the other end of the second connecting rod 5 is passed through The eighth rotating pair 22 is connected to the sliding sleeve 8, and the sliding sleeve 8 is set on the second connecting rod 5 through the moving pair 31, and one end of the third connecting rod 9 is connected to the sliding sleeve 8 through the fifteenth rotating pair 23. On the sleeve 8, the other end of the third connecting rod 9 is connected to the first lifting connecting rod 12 through the sixteenth rotating pair 28;
所述回转平台34通过第二十转动副33安装在小车1上。The rotary platform 34 is installed on the trolley 1 through the twentieth rotating pair 33 .
工作原理及过程：Working principle and process:
所述回转平台34有一台伺服电机驱动，所述第一主动杆2和第二主动杆4各有一台由伺服电机驱动。小车1移动到目标物体前，三个伺服电机同时工作，控制回转平台34旋转，以及第一主动杆2和第二主动杆4实现机械手升降，让机械抓手14接近并抓取目标物体，机械抓手14抓取物料后，一台伺服电机工作控制第二主动杆4转动，另两台伺服电机停止工作，控制机械手升降，小车移动到目的地之后，三台伺服电机电机同时工作，控制回转平台34旋转，以及第一主动杆2和第二主动杆4转动，让机械抓手14接近并达到目的地，机械抓手14松开目标物体，完成一次完整的作业。The rotary platform 34 is driven by a servo motor, and each of the first active rod 2 and the second active rod 4 is driven by a servo motor. The trolley 1 moves to the front of the target object, and the three servo motors work at the same time to control the rotation of the rotary platform 34, and the first active rod 2 and the second active rod 4 realize the lifting of the manipulator, so that the mechanical gripper 14 approaches and grabs the target object. After the gripper 14 grabs the material, one servo motor works to control the rotation of the second active rod 4, and the other two servo motors stop working to control the lifting of the manipulator. After the trolley moves to the destination, the three servo motors work simultaneously to control the rotation The rotation of the platform 34 and the rotation of the first active rod 2 and the second active rod 4 allow the mechanical gripper 14 to approach and reach the destination, and the mechanical gripper 14 releases the target object to complete a complete operation.
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| CN109555053A (en) * | 2017-09-27 | 2019-04-02 | 山东交通学院 | A kind of full revolute pair Three Degree Of Freedom greenbelt dust suction sweeping machine device people |
| CN110171721B (en) * | 2019-04-10 | 2020-08-11 | 中国矿业大学 | A three-degree-of-freedom heavy-duty woodworking stacking robot with redundant drives |
| CN113729560A (en) * | 2021-09-16 | 2021-12-03 | 上海景吾智能科技有限公司 | Hotel cleaning machines people |
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| CN104608111A (en) | 2015-05-13 |
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