Self-propelled soft robot body

1. A self-propelled soft robot body, adapted for automatically moving in a tract, comprising a tube which is internally and axially provided with

a tube cavity,

at least one propelling structure, comprising a first driving unit, a second driving unit and a third driving unit, which are embedded within a peripheral wall of the tube cavity, relative to an axis thereof, and along the axis of the tube; and

at least two support structures, with each two adjacent support structures having the at least one propelling structure arranged therebetween;

wherein,

the first driving unit, the second driving unit and the third driving unit are respectively telescopic along the axis of the tube; and

the support structures are fixedly connected with the propelling structure and arranged about the peripheral wall of the tube cavity, for fixing at least one end of the self-propelled soft robot body on the tract, and providing support for the self-propelled soft robot body in the tract during movement.

2. The self-propelled soft robot body in accordance with claim 1 , wherein,

the first driving unit, the second driving unit and the third driving unit are respectively internally provided with a first fluid accommodation cavity suitable for accommodating a fluid; and

the first fluid accommodation cavity is communicated with a fluid supply-drainage device through a first fluid supply-drainage pipe, and under an action of the fluid supply-drainage device, able to extend when pressurized or contract when depressurized along the axis.

3. The self-propelled soft robot body in accordance with claim 2 , the first fluid accommodation cavity is formed in the peripheral wall of the tube, with one end connected with the first fluid supply-drainage pipe.

4. The self-propelled soft robot body in accordance with claim 2 , wherein, the propelling structure further comprises a first restraint layer, which circumferentially surrounds an exterior of the tube, for restricting the extension or contraction of the first driving unit, the second driving unit and the third driving unit along the axis of the tube.

5. The self-propelled soft robot body in accordance with claim 2 , wherein, the support structure comprises:

a positioning and expansion unit, fixedly arranged on the peripheral wall of the tube, adapted for expanding or contracting in an radial direction of the tube, and able to be fixed to the tract when expanding, and separated from the tract when contracting; and

a second restraint layer, surrounding the exterior of the positioning and expansion unit along an circumference of the tube, for restricting the expansion or contraction of the positioning and expansion unit in an radial direction of the tube.

6. The self-propelled soft robot body in accordance with claim 2 , further comprising an outer cover which covers exteriors of the propelling structure and the support structure, and the outer cover is made of flexible material.

7. The self-propelled soft robot body in accordance with claim 2 , further comprising a detection device which further comprises:

a pressure sensor, circumferentially and evenly arranged on an outer side of the support structure, adapted for detecting a pressure imposed on the tract by the support structure; and

a tension sensor, circumferentially and evenly arranged on an outer side of the propelling structure, adapted for detecting a protraction or contraction state of the propelling structure.

8. The self-propelled soft robot body in accordance with claim 1 , wherein, the propelling structure further comprises a first restraint layer, which circumferentially surrounds an exterior of the tube, for restricting the extension or contraction of the first driving unit, the second driving unit and the third driving unit along the axis of the tube.

9. The self-propelled soft robot body in accordance with claim 1 , wherein, the support structure comprises:

a positioning and expansion unit, fixedly arranged on the peripheral wall of the tube, adapted for expanding or contracting in n radial direction of the tube, and able to be fixed to the tract when expanding, and separated from the tract when contracting; and

a second restraint layer, surrounding the exterior of the positioning and expansion unit along an circumference of the tube, for restricting the expansion or contraction of the positioning and expansion unit in an radial direction of the tube.

10. The self-propelled soft robot body in accordance with claim 9 , wherein, the positioning and expansion unit is provided with a second fluid accommodation cavity which is suitable for accommodating a fluid and is communicated with the fluid supply-drainage device through a second fluid supply-drainage pipe; the second fluid accommodation cavity is annular.

11. The self-propelled soft robot body in accordance with claim 9 , wherein, the support structure further comprises a negative-pressure positioning device which is arranged on the tube and adapted for enabling the self-propelled soft robot body to be adsorbed on the tract via negative pressure, the negative-pressure positioning device comprises:

negative-pressure holes, evenly arranged on the peripheral wall of the tube and communicated with the tract; and

a negative pressure conduit, connecting the negative-pressure holes with the fluid supply-drainage device, so as to connect negative-pressured branches.

12. The self-propelled soft robot body in accordance with claim 1 , further comprising an outer cover which covers exteriors of the propelling structure and the support structure, and the outer cover is made of flexible material.

13. The self-propelled soft robot body in accordance with claim 1 , further comprising a detection device which further comprises:

a pressure sensor, circumferentially and evenly arranged on an outer side of the support structure, adapted for detecting a pressure imposed on the tract by the support structure; and

a tension sensor, circumferentially and evenly arranged on an outer side of the propelling structure, adapted for detecting a protraction or contraction state of the propelling structure.