CN202038386U - Cylindrical series elastic driver - Google Patents
Cylindrical series elastic driver Download PDFInfo
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- CN202038386U CN202038386U CN2011201211571U CN201120121157U CN202038386U CN 202038386 U CN202038386 U CN 202038386U CN 2011201211571 U CN2011201211571 U CN 2011201211571U CN 201120121157 U CN201120121157 U CN 201120121157U CN 202038386 U CN202038386 U CN 202038386U
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Abstract
The utility model aims at providing a cylindrical series elastic driver, which comprises an encoder, a servo motor, a connecting cylinder, a coupling, a lead screw, thrust cylinders, a nut, springs, spring drive plates, a shell, a drive cylinder and a drive output end, wherein the encoder is installed on the servo motor, the servo motor is additionally connected with the lead screw through the coupling in the connecting cylinder, three threaded holes of which every two form an 120-dgree angle are arranged on the circumference of the nut, one thrust cylinder is installed at each threaded hole, the spring drive plates are respectively installed on the two sides of the three thrust cylinders, the springs are respectively installed on the external sides of the two spring drive plates, and the drive cylinder is connected with the drive output end. The cylindrical series elastic driver is a novel, high-efficiency, miniaturized, modularized and bionic elastic driver, provides technical basis for designing a walking robot which is highly adaptive to complex landforms, has a reliable performance, has a small volume and has a joint buffering capacity during walking at high speed, and has a very high research value and a wide application prospect.
Description
Technical field
The utility model relates to a kind of actuator that is used for robot ambulation.
Background technology
Robot is in the environmental operations of the unknown, and the robot that can adapt to the power control of external environment condition is gratifying.Current, the force control method of robot has: 1. direct force control method, decide the torque of joint of robot by the extraneous information of control algorithm and sensing, and make robot produce suitable application force to external environment condition.2. indirect force control method is exported by measuring the indirect control effortes of mode such as elastic deformation.
Actuator is as a kind of equipment or mechanical device, is with the energy of certain form or is converted into mechanical force, moment, perhaps is converted into space rate, rotative speed.At first should be in light weight as the actuator that robot is used, horsepower output is big, can provide higher force or moment, and cost is low.In addition, in the external environment condition interactive process, in the power output scope of broad, the conformability of good power output characteristic should be arranged, in order to avoid cause robot itself or the infringement of the outside plant of contact with it.At last, robot is when the environmental work of the unknown, and the impact energy that is produced is delivered in the actuator by the robot architecture, must improve actuator resistance to shock loads ability, avoids its damage.
Present stage, force control device mainly contains direct drive unit, gear device, wire drive etc.These device propers have conflicting character.For example: gear reduction is converted to the needed slow speed of revolution of robot, high torque (HT) with high rotating speed, the low torque of electrical motor.But because non-linear factors such as the friction of gear mechanism self, gear clearance, and increased load rotating inertia, make the accuracy rate of actuator power output reduce the resistance to shock loads ability drop.Therefore, it is big to develop power-mass ratio, and adapt to the power of high bandwidth variation and keep its stable actuator more and more to come into one's own, be one of field of Robotics primary study.
Traditional series connection elastic driver, its constructional feature are to have adopted four groups of springs in parallel, and each is organized the middle guide rod of spring in parallel and all will guarantee absolute parallel like this, and this has increased great difficulty for processing and manufacturing of this quasi-driver.
Summary of the invention
The purpose of this utility model is to provide the very large drum type brake series connection of the variation bandwidth with biosome muscle property, adaptive faculty elastic driver.
The purpose of this utility model is achieved in that
The utility model drum type brake series connection elastic driver, it is characterized in that: comprise coder, servomotor, connecting cylinder, coupler, leading screw, thrust cylindrical, nut, spring, the spring drive plate, shell, drive tube and drive output, coder is installed on the servomotor, servomotor also links to each other with leading screw by the coupler in the connecting cylinder, connecting cylinder links to each other with shell, thrust cylindrical, nut, spring, the spring drive plate is installed in the shell, have three on the nut circumference and become 120 ° of tapped bore, each tapped bore place is the installed thrust cylinder respectively, the both sides of three thrust cylindrical are the mounting spring drive plate respectively, the outside of two spring drive plates is mounting spring respectively, connect spring stop near the spring outside the spring drive plate of connecting cylinder one side, spring away from the spring drive plate of the connecting cylinder one side outside connects the flange that drives tube, drives tube and also links to each other with drive output.
The utility model can also comprise:
1, the motor mounted panel is installed between described servomotor and the connecting cylinder.
Advantage of the present utility model is: the elastic driver that the utility model is a kind of new high efficiency, miniaturization, modularization, have bionical feature, provide technical foundation for designing a kind of walking robot small and exquisite to the adaptation of complex-terrain height, dependable performance, volume, that when walking at a high speed, have the joint buffer capacity, have very high researching value and wide application prospect.
Description of drawings
Fig. 1 is a cutaway drawing of the present utility model;
Fig. 2 is a front view of the present utility model;
Fig. 3 is a left view of the present utility model;
Fig. 4 is a block diagram of the present utility model;
Fig. 5 is a controlling party block diagram of the present utility model.
The specific embodiment
For example the utility model is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～5, the utility model is a kind of motor-driven elastic driver, the end of servomotor 2 and coder 1 are connected, servomotor 2 other ends are connected by four screws and motor mounted panel 3, motor mounted panel 3 is connected with connecting cylinder 4, connecting cylinder 4 is connected with bearing seat 6, bearing seat 6 is connected with shell 17, shell 17 other ends and end cap 18 are connected, and what servomotor 2 output shafts were installed from inside to outside is respectively coupler 4, deep groove ball bearing 7, leading screw 8, back-up block 16, nut 11, thrust cylindrical 12.The both sides of the thrust cylindrical 12 that links to each other with nut 11 are two spring drive plates 13, the both sides of spring drive plate 13 are respectively two living compressed springs 14 that are subjected to identical predetermincd tension, the other end bonded assembly of front springs 14 is to link to each other with the flange that drives tube 19 itself, have two tapped bore and guide cylinder on the flange and be connected 15, guide cylinder 15 moves along the guide groove of shell 17, guide groove becomes 180 ° of arrangements inside the shell, the other end bonded assembly of rear end spring 14 is spring baffle rings 10, the other end of spring baffle ring 10 links to each other with baffle ring captive nut 9, drives tube 19 outer ends and links to each other with drive output 20.
Its power transmission process is: propulsion source is a servomotor 2, and the output shaft of servomotor 2 is connected as a single entity by coupler 5 and leading screw 8.Like this, the rotating speed of servomotor 2 and torque have been passed to leading screw 8 by coupler 5.With on leading screw 8 nut engaged 11 three thrust cylindrical 12 are housed, nut 11 and three thrust cylindrical 12 can only axially move around along driving tube 19 like this, at this moment be delivered to the torque of leading screw 8 and rotating speed be converted to feed screw nut and three thrust cylindrical 12 along the moving velocity on leading screw 8 axial directions with to the pressure on the spring drive plate 13, spring drive plate 13 suffered pressure pass to coupled spring 14 again, the other end of the compression spring 14 of front end acts directly on power and drives on tube 19 flanges, the other end of the compression spring 14 of rear end is used in masterpiece on the spring baffle ring 10, acting on through baffle ring 10 captive nuts on the driving tube 19, driving tube 19 at last and export by drive output 20.
In conjunction with Fig. 5, two groups of springs 14 place between actuator 2 and the external loading 21, make the antagonistic force of its thrust of bearing actuator and load 21, and the amount of compression of spring 14 is represented the size of actuator to load 21 power outputs.Force gauge 23 produces a power measurement signal by the application force that measurement acts on load 21.Controller 24 compares power measurement signal and the given signal of accepting 22 and handle.Based on the control rule, controller produces the control signal of control current of electric amount, makes motor output expectation torque with compression spring.
The utility model servomotor 2 passes to leading screw 8 to moment of torsion and rotating speed by coupler 5, changing into nut 11 again moves axially along leading screw 8, three thrust cylindrical 12 are installed on the nut 11, thrust cylindrical 12 is passed to spring 14 to power by spring drive plate 13, drive tube 19 and under the effect of spring force, do straight reciprocating motion.Spring 14 played the effect of buffering when like this, actuator contacted with load.This structure Design, can adequately protect actuator and dentition, the ability of raising resistance to shock loads.And this structure is simple relatively, makes easily, and not high to the designing requirement of actuator, weight is lighter, and good economy performance because sealing is relatively good, be difficult for into dust, so the life-span is long.In addition, robot has low output damping with actuator requirement power and adapts to the high bandwidth variation of external loading power, and spring stiffness has material impact to this two parameter.Spring rate reduces and can carry out filtering to external loading power better, and its increase can improve output bandwidth.By optimization analysis, select suitable rigid spring, to reach output damping and the output bandwidth that meets the robot manipulating task requirement to spring rate.
Claims (2)
1. drum type brake series connection elastic driver, it is characterized in that: comprise coder, servomotor, connecting cylinder, coupler, leading screw, thrust cylindrical, nut, spring, the spring drive plate, shell, drive tube and drive output, coder is installed on the servomotor, servomotor also links to each other with leading screw by the coupler in the connecting cylinder, connecting cylinder links to each other with shell, thrust cylindrical, nut, spring, the spring drive plate is installed in the shell, have three on the nut circumference and become 120 ° of tapped bore, each tapped bore place is the installed thrust cylinder respectively, the both sides of three thrust cylindrical are the mounting spring drive plate respectively, the outside of two spring drive plates is mounting spring respectively, connect spring stop near the spring outside the spring drive plate of connecting cylinder one side, spring away from the spring drive plate of the connecting cylinder one side outside connects the flange that drives tube, drives tube and also links to each other with drive output.
2. drum type brake series connection elastic driver according to claim 1 is characterized in that: the motor mounted panel is installed between described servomotor and the connecting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201211571U CN202038386U (en) | 2011-04-22 | 2011-04-22 | Cylindrical series elastic driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201211571U CN202038386U (en) | 2011-04-22 | 2011-04-22 | Cylindrical series elastic driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202038386U true CN202038386U (en) | 2011-11-16 |
Family
ID=44965844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201211571U Expired - Lifetime CN202038386U (en) | 2011-04-22 | 2011-04-22 | Cylindrical series elastic driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202038386U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211622A (en) * | 2011-04-22 | 2011-10-12 | 哈尔滨工程大学 | Cylinder series connection elastic driver |
| CN110406608A (en) * | 2019-07-29 | 2019-11-05 | 南京工程学院 | Multi-mode elastic driver towards walking robot |
| CN113799109A (en) * | 2021-09-03 | 2021-12-17 | 华中科技大学 | Single-spring series elastic driver and robot |
-
2011
- 2011-04-22 CN CN2011201211571U patent/CN202038386U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211622A (en) * | 2011-04-22 | 2011-10-12 | 哈尔滨工程大学 | Cylinder series connection elastic driver |
| CN110406608A (en) * | 2019-07-29 | 2019-11-05 | 南京工程学院 | Multi-mode elastic driver towards walking robot |
| CN110406608B (en) * | 2019-07-29 | 2021-03-30 | 南京工程学院 | Multi-mode elastic driver for walking robot |
| CN113799109A (en) * | 2021-09-03 | 2021-12-17 | 华中科技大学 | Single-spring series elastic driver and robot |
| CN113799109B (en) * | 2021-09-03 | 2022-11-11 | 华中科技大学 | Single-spring series elastic driver and robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111116 Effective date of abandoning: 20120822 |