阅读说明：本技术 一种多运动模式的步行装置 (Walking device with multiple movement modes ) 是由 秦建军 杨芳 高磊 郑皓冉 张昊 于 2020-04-02 设计创作，主要内容包括：本发明公开了一种多运动模式的步行装置,包括机架和四组多杆步行机构,多杆步行机构包括安装板、电机、动力臂、液压连杆、摆动臂、以及三角着地杆,四组安装板均与机架连接,且四组安装板分别位于机架前部和后部的两侧,电机能驱动液压连杆摆动,使三角着地杆在摆动臂限制下跟随液压连杆摆动而摆动,再通过四个三角着地杆之间的相互配合,使步行装置能完成行走动作。通过设置可伸缩的液压连杆,步行装置在前进时通过调节液压连杆的长度对步行装置的步态模式进行调整,使得步行装置能实现正常步态模式与抬腿步态模式的转变,增强地形适应性,增强不同工况下的适应能力,提高步行装置移动过程中的稳定性。(The invention discloses a multi-motion-mode walking device which comprises a rack and four groups of multi-rod walking mechanisms, wherein each multi-rod walking mechanism comprises a mounting plate, a motor, a power arm, a hydraulic connecting rod, a swinging arm and triangular landing rods, the four groups of mounting plates are connected with the rack, the four groups of mounting plates are respectively positioned on two sides of the front part and the rear part of the rack, the motors can drive the hydraulic connecting rods to swing, the triangular landing rods swing along with the swing of the hydraulic connecting rods under the limitation of the swinging arms, and the walking device can finish walking action through mutual matching of the four triangular landing rods. By arranging the telescopic hydraulic connecting rod, the gait mode of the walking device is adjusted by adjusting the length of the hydraulic connecting rod when the walking device moves forwards, so that the walking device can realize the conversion between a normal gait mode and a leg lifting gait mode, the terrain adaptability is enhanced, the adaptability under different working conditions is enhanced, and the stability of the walking device in the moving process is improved.)

1. A walking device with multiple movement modes is characterized by comprising a frame (2) and four groups of multi-rod walking mechanisms (1),

the multi-rod walking mechanism (1) comprises mounting plates (11), a motor (12), a power arm (13), a hydraulic connecting rod (14), a swing arm (17) and a triangular landing rod (15), wherein four groups of the mounting plates (11) are connected with a rack (2), the four groups of the mounting plates are respectively positioned at two sides of the front part and the rear part of the rack (2),

wherein the triangular landing rod (15) is provided with a first upper vertex angle part and a second upper vertex angle part, the first upper vertex angle part is hinged with the lower end of the swing arm (17), the second upper vertex angle part is hinged with the lower end of the hydraulic connecting rod (14), the upper end of the swing arm (17) is hinged with the mounting plate (11), the upper end of the hydraulic connecting rod (14) is hinged with the movable end of the power arm (13), and the power arm (13) is in transmission connection with the motor (12) arranged on the mounting plate (11) through a coupler,

the motor (12) can drive the hydraulic connecting rod (14) to swing, so that the triangular landing rods (15) move along with the swing of the hydraulic connecting rod (14) under the limitation of the swing arm (17), and four triangular landing rods (15) of the four groups of multi-rod walking mechanisms are mutually matched to finish the walking action.

2. The walking device with multiple movement modes according to claim 1, wherein a stabilizing link (16) is provided between the hydraulic link (14) and the swing arm (17), and both ends of the stabilizing link (16) are hinged to the hydraulic link (14) and the swing arm (17), respectively.

3. The walking device of claim 2, wherein the stabilizer link (16) is crescent shaped for avoiding the first upper vertex in the triangular landing leg (15).

4. The walking device of multiple exercise modes according to claim 1, wherein the width of the front part of the frame (2) is different from the width of the rear part of the frame (2), and the two mounting plates (11) mounted on the same side of the frame (2) are arranged to be offset from each other in the width direction of the frame (2).

5. The walking device of claim 1, wherein the triangular landing post (15) further comprises a foot (151) connected to a lower top corner, wherein the foot (151) is integrally connected to the lower top corner.

6. The walking device with multiple movement modes as claimed in claim 1, wherein a fixing rod (18) is provided between two mounting plates (11) disposed opposite to each other at the front and/or rear of the frame (2), and both ends of the fixing rod (18) are respectively connected to the two mounting plates (11).

7. The walking device with multiple exercise modes according to claim 1, wherein the rotational phase angles of the power arms (13) in two adjacent sets of the walking mechanisms (1) with multiple exercises are different by 180 °, and the rotational phase angles of the power arms (13) in two sets of the walking mechanisms (1) with multiple exercises with diagonal exercises are the same.

Technical Field

The invention relates to the field of mobile devices, in particular to a walking device with multiple movement modes.

Background

A mobile Robot (Robot) is a machine device that automatically performs work. It can accept human command, run the program programmed in advance, and also can operate according to the principle outline action made by artificial intelligence technology. The task of which is to assist or replace human work, such as production, construction, or dangerous work.

According to the moving mode, the method can be divided into: wheel-type mobile robots, walking mobile robots (single-legged, double-legged, and multi-legged), crawler-type mobile robots, crawling robots, peristaltic robots, and mobile robots; according to the working environment, the method can be divided into the following steps: an indoor mobile robot and an outdoor mobile robot; the robot is divided into a functional (horizontal type) structure robot, a behavioral (vertical type) structure robot and a hybrid robot according to the structure of a control system; according to functions and purposes, the method can be divided into: medical robots, military robots, handicapped robots, cleaning robots, and the like.

The four-legged walking robot currently on the market has various mechanisms, although the walking mechanism has a wide variety of styles. Although the obstacle crossing performance and stability of part of walking robots are high, the structure is too complex, and the design cost and the assembly requirement are high; however, the walking robot with a simple structure has low obstacle crossing performance and stability, and cannot meet the use requirements. Therefore, it is necessary to design a walking device with relatively simple structure and high obstacle crossing performance and stability.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a walking device with multiple movement modes so as to meet the requirements of a walking mechanism on obstacle crossing performance and stability.

The walking device comprises a frame and four groups of multi-rod walking mechanisms, wherein each group of multi-rod walking mechanisms comprises a mounting plate, a motor, a power arm, a hydraulic connecting rod, a swing arm and a triangular landing rod, the four groups of mounting plates are all connected with the frame, and the four groups of mounting plates are respectively positioned on two sides of the front part and the rear part of the frame.

The triangular landing rod is provided with a first upper vertex angle part and a second upper vertex angle part, the first upper vertex angle part is hinged with the lower end of the swing arm, the second upper vertex angle part is hinged with the lower end of the hydraulic connecting rod, the upper end of the swing arm is hinged with the mounting plate, the upper end of the hydraulic connecting rod is hinged with the movable end of the power arm, and the power arm is in transmission connection with the motor arranged on the mounting plate through a coupler.

The motor can drive the hydraulic connecting rod to swing, so that the triangular landing rods move along with the swing of the hydraulic connecting rod under the limitation of the swing arm, and the four triangular landing rods of the four groups of multi-rod walking mechanisms are mutually matched to finish walking action.

Furthermore, a stabilizing connecting rod is arranged between the hydraulic connecting rod and the swing arm, and two ends of the stabilizing connecting rod are respectively hinged with the hydraulic connecting rod and the swing arm.

Furthermore, the shape of the stabilizing connecting rod is crescent and is used for avoiding the first upper vertex angle part in the triangular ground landing rod.

Furthermore, the width of the front part of the rack is different from the width of the rear part of the rack, and the two mounting plates which are arranged on the same side of the rack are arranged in a staggered manner in the width direction of the rack.

Further, the triangular landing post further comprises a support leg connected with a lower top corner, wherein the support leg and the lower top corner are connected into a whole.

Furthermore, a fixed rod is arranged between the two mounting plates which are oppositely arranged at the front part and/or the rear part of the rack, and two ends of the fixed rod are respectively connected with the two mounting plates.

Furthermore, the rotation phase angles of the power arms in the two groups of the multi-bar walking mechanisms which are adjacently arranged are different by 180 degrees, and the rotation phase angles of the power arms in the two groups of the multi-bar walking mechanisms which are diagonally arranged are the same.

Compared with the prior art, the invention has the beneficial effects that:

according to the walking device with multiple movement modes, the telescopic hydraulic connecting rod is arranged, and the gait mode of the walking device is adjusted by adjusting the length of the hydraulic connecting rod when the walking device moves forwards, so that the walking device can realize the conversion between a normal gait mode and a leg lifting gait mode, the terrain adaptability is enhanced, and the adaptability under different working conditions is enhanced; when an obstacle is encountered, the control part on the device controls the hydraulic connecting rod and the motor to be matched with each other, so that the purpose of crossing the obstacle is achieved, and the stability of the walking device in the moving process is improved.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the walking device with multiple exercise modes according to the present invention;

FIG. 2 is a schematic view showing the construction of a multi-rod walking mechanism in the multi-exercise mode walking device of the present invention;

3-9 are schematic views showing the change of gait of the walking device when the hydraulic connecting rod is short in length according to the invention; and

fig. 10-16 are schematic views showing the gait changes of the walking device of the invention when the hydraulic connecting rod is long.

Description of the reference numerals

1. A multi-bar walking mechanism; 2. a frame; 11. mounting a plate; 12. a motor; 13. a power arm; 14. a hydraulic link; 15. a ground striking rod is triangular; 16. a stabilizing link; 17. a swing arm; 18. fixing the rod; 151. and (3) a support leg.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1-16 illustrate some embodiments according to the invention.

As shown in fig. 1 to 2, a walking device with multiple movement modes comprises a frame 2 and four groups of walking mechanisms 1 with multiple rods, wherein the walking mechanisms 1 with four groups of multiple rods are respectively arranged at two sides of the front part and the rear part of the frame 2; the walking device can move forwards through the cooperation of the four groups of multi-rod walking mechanisms 1.

Specifically, as shown in fig. 2, the multi-bar walking mechanism 1 includes a mounting plate 11, a motor 12, a power arm 13, a hydraulic link 14, a triangular ground bar 15, and a swing arm 17. The mounting plates 11 are connected to the frame 2 by countersunk screws, and four sets of mounting plates 11 are respectively mounted on the front and rear sides of the frame 2, so that the multi-bar walking mechanism 1 can be fixedly mounted on the frame 2.

The motor 12 is fixed on the inner side of the mounting plate 11 through a mechanical screw, the power arm 13 is arranged on the outer side of the mounting plate 11, and one end of the power arm 13 is in transmission connection with the motor 12 through a coupler, so that the power arm 13 can rotate along with the motor 12. Wherein, the movable end of the power arm 13 is hinged with one end of the hydraulic connecting rod 14, and the other end of the hydraulic connecting rod 14 is hinged with the triangular landing rod 15.

As shown in fig. 2, the triangular landing bar 15 includes a triangular link having a lower vertex, a first upper vertex, and a second upper vertex, and a leg 151, the leg 151 is integrally connected to the lower vertex of the lower portion of the triangular link, the first upper vertex of the triangular link is hinged to the lower end of the swing arm 17, the second upper vertex of the triangular link is hinged to the lower end of the hydraulic link 14, the upper end of the swing arm 17 is hinged to the mounting plate 11 by a machine screw, and the swing of the triangular landing bar 15 is restricted by the swing arm 17 and the hydraulic link 14.

Wherein, the first end of hydraulic pressure connecting rod is equipped with first connection handle piece, and the second end is equipped with the second and connects the handle piece, and first connection handle piece is articulated with power arm 13, and the second is connected the handle piece and is triangular ground pole 15 and articulate.

When the motor 12 drives the power arm 13 to rotate, the hydraulic connecting rod 14 swings along with the rotation of the power arm 13, the triangular landing rod 15 swings along with the swinging of the hydraulic connecting rod 14 under the limitation of the swinging arm 17, so that the support legs of the triangular landing rod 15 swing back and forth, and the walking device can finish walking action through the mutual matching of the four triangular landing rods 15.

Specifically, as shown in fig. 1, during the movement of the walking device, the rotating phase angles of the power arms 13 in the two sets of the multi-bar walking mechanisms 1 arranged diagonally are equal; the walking actions of the two groups of multi-rod walking mechanisms 1 arranged diagonally are consistent; the rotation phase angles of the power arms 13 in the two adjacent groups of the multi-bar walking mechanisms 1 are different by 180 degrees. When the walking device walks, two feet at opposite corners of the frame simultaneously land on the ground, the other two feet are simultaneously lifted, and the four feet alternately land on the ground and are lifted, so that the walking action can be completed. The walking stability of the whole walking device can be improved by the mode that two feet arranged on the opposite angles of the rack work simultaneously.

As shown in fig. 1-2, the power arm 13, the hydraulic link 14, the triangular landing bar 15, and the swing arm 17 of the multi-bar walking mechanism 1 are all flat bars, and the bars are connected by being arranged in a staggered manner in the width direction of the frame 2, and the mounting plate 11 is provided with a staggered mounting portion, so that the bars of the multi-bar walking mechanism 1 are not interfered after being hinged.

The hydraulic connecting rod and the connecting handle blocks at the two ends of the hydraulic connecting rod are positioned on a first thickness layer, the power arm 13 and the triangular ground rod 15 are positioned on a second thickness layer, and the swing arm 17 is positioned on a third thickness layer. In the invention, the connecting rods of the four groups of multi-rod walking mechanisms are arranged in a layered mode, so that the problem of mechanism motion interference is solved.

In one embodiment, in order to shorten the length of the rack 2 and ensure that the two groups of multi-bar walking mechanisms 1 on the same side of the rack 2 do not interfere with each other, the width of the front part of the rack 2 is different from the width of the rear part of the rack 2, that is, the distance between two mounting plates 11 installed on the front part of the rack 2 is different from the distance between two mounting plates 11 installed on the rear part of the rack 2, and the two mounting plates 11 installed on the same side of the rack 2 are arranged in a staggered manner along the width direction of the rack 2; when the walking device moves, the two sets of multi-rod walking mechanisms 1 on the same side do not interfere.

In one embodiment, as shown in fig. 1, a fixing rod 18 is disposed between two opposite mounting plates 11 at the front and the rear of the frame 2, two ends of the fixing rod 18 are fixedly connected with the mounting plates 11 through countersunk screws, and the fixing rod 18 has a lateral supporting effect on the mounting plates 11, so that the stability of the mounting plates 11 and the whole multi-bar walking mechanism can be increased.

In one embodiment, as shown in fig. 1, a stabilizing link 16 is provided between the hydraulic link 14 and the swing arm 17, two ends of the stabilizing link 16 are hinged to the lower ends of the hydraulic link 14 and the swing arm 17, respectively, and the arrangement of the stabilizing link 16 can limit the swing amplitude of the triangular landing bar 15, thereby further improving the stability of the movement of the walking device.

In one embodiment, as shown in fig. 2, the position of the stabilizing link 16 is consistent with that of the triangular landing bar 15 in the width direction of the frame 2, and the stabilizing link 16 is located at the same thickness layer, so as to avoid interference with the stabilizing link 16 during the movement of the triangular landing bar 15, the stabilizing link 16 is arranged in a crescent shape, and the stabilizing link 16 can avoid an upper vertex angle portion one in the triangular landing bar 15.

In one embodiment, as shown in fig. 1 and 2, the supporting legs 151 are integrally connected with the lower top corner of the lower part of the triangular connecting rod, when the first top corner and the second top corner are at the same height, i.e. when the triangular landing bar 15 is in an upright state, the supporting legs 151 and the advancing direction of the walking device form an included angle of 60 to 80 degrees, and through the arrangement similar to that of the bent legs, the triangular landing bar 15 is more stable during the working process of the multi-bar walking mechanism, and the walking stability of the whole walking device is increased.

The multi-exercise mode walking device of the present invention works as follows:

firstly, all parts of the walking device are assembled, and the controller controls the motor to rotate, so as to adjust the initial positions of the power arms 13 in the four multi-rod walking mechanisms 1, and ensure that the rotation phase angles of the power arms 13 in two groups of the multi-rod walking mechanisms 1 which are adjacently arranged are different by 180 degrees, and the rotation phase angles of the power arms 13 in two groups of the multi-rod walking mechanisms 1 which are diagonally arranged are equal;

then, the controller controls the motor 12 to work, the motor 12 drives the power arm 13 to rotate, the hydraulic connecting rod 14 swings along with the rotation of the power arm 13, and the triangular landing rod 15 swings along with the hydraulic connecting rod 14 under the limitation of the swinging arm 17 and the stabilizing connecting rod 16, so that the support legs of the triangular landing rod 15 swing back and forth;

finally, the four triangular landing rods 15 are matched with each other, so that the walking device can finish walking action.

The gait change process of the walking device with multiple movement modes of the invention is as follows:

as shown in fig. 3-9, the hydraulic link is shorter in length, and the walking device has a first walking position.

First, two power arms 13 arranged at the front right and the rear left of the rack are defined as a first group of power arms, and the other two power arms 13 are defined as a second group of power arms, as shown in fig. 3, when the first group of power arms rotates to about seven o 'clock direction, the second group of power arms rotates to about one o' clock direction, at this time, the support legs of the four triangular ground rods 15 of the walking device are all contacted with the ground, and the walking device is in the original position.

As shown in fig. 4, the power arms continue to rotate clockwise, during the process that the first group of power arms rotate to about nine-point half-way, the movable end of the hydraulic link 14 moves upwards, so that the triangular landing bar 15 changes from a backward tilting state to an upright state with the supporting legs as the supporting points to push the whole walking device to move forwards, and when the second group of power arms rotate to about three-point half-clock, the movable end of the hydraulic link 14 moves forwards, so that the triangular landing bar 15 lifts the feet upwards and forwards and is separated from the ground to prepare for the next movement.

As shown in fig. 5, during the process of continuing to rotate the first group of power arms 13 clockwise to eleven o 'clock direction, the movable ends of the hydraulic links 14 continue to move upward, so that the triangular landing bar 15 inclines forwards with the legs as the pivot to push the whole walking device to move forward, the second group of power arms continue to rotate clockwise to about five o' clock direction, and the movable ends of the hydraulic links 14 move forward and downward, so that the triangular landing bar 15 lifts the legs forward to prepare for the next movement.

As shown in fig. 6, when the first group of power arms 13 continue to rotate clockwise to one clock direction, the movable ends of the hydraulic links 14 continue to move forward, so that the triangular landing bar 15 continues to tilt forward with the legs as the fulcrum, pushing the whole walking device to move forward, and when the second group of power arms 13 continue to rotate clockwise to about seven clock directions, the movable ends of the hydraulic links 14 move backward, so that the legs of the triangular landing bar 15 move downward and contact with the ground.

As shown in fig. 7, during the first group of power arms 13 continuing to rotate clockwise to the third-o' clock direction, the movable end of the hydraulic link 14 continues to move forward, so that the triangular ground rod 15 lifts the foot forward and upward and is separated from the ground, and the next movement is prepared; when the second group power arm 13 continues to rotate clockwise to about nine o' clock direction, the movable end of the hydraulic link 14 moves upward, so that the triangular landing bar 15 changes from a backward inclined state to an upright state with the legs as fulcrums, and pushes the whole walking device to move forward.

As shown in fig. 8, in the process that the first group of power arms 13 continuously rotate clockwise to the five o' clock direction, the movable end of the hydraulic link 14 continuously moves forward, and the movable end of the hydraulic link 14 moves forward and downward, so that the triangular ground rod 15 lifts the foot forward to prepare for the next movement; during the clockwise rotation of the second group of power arms 13 to about eleven o' clock direction, the movable end of the hydraulic link 14 moves upward, so that the triangular landing bar 15 inclines forwards with the supporting legs as the fulcrum, and the whole walking device is pushed to move forwards.

As shown in fig. 9, in the process that the first group of power arms 13 continuously rotate clockwise to about seven o' clock direction, the movable end of the hydraulic link 14 moves backwards, so that the support leg of the triangular ground rod 15 moves downwards and contacts with the ground; during the process that the second group of power arms 13 continuously rotate clockwise to a clock direction, the movable end of the hydraulic connecting rod 14 continuously moves forwards, so that the triangular landing rod 15 continuously inclines forwards by taking the supporting legs as a fulcrum, and the whole walking device is pushed to move forwards.

The walking device operates in a cycle of movement steps as shown in fig. 3 to 9, two triangular landing bars 15 at opposite corners of the frame land simultaneously, the other two triangular landing bars 15 lift up simultaneously, and the four triangular landing bars 15 land and lift up alternately, so that the walking device can move forward smoothly.

As shown in fig. 10-16, the hydraulic link is longer, and the walking device has a second posture.

Compared to the walking device of fig. 3-9, the length of the hydraulic link of the walking device of fig. 10-16 is increased, and the movement state of the walking device is changed. In the moving process of the walking device, the hydraulic connecting rod 14 extends, so that when the triangular landing rod 15 lifts feet forwards and upwards, the lifting height of the triangular landing rod 15 is increased, the passing performance of the walking device is improved, the distance spanned forwards by the triangular landing rod 15 is increased, the distance of the multi-rod walking mechanism which moves forwards in each step is increased, and the effect of improving the moving speed is achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.